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Literatura académica sobre el tema "Ultrasound Navigation"

Autor: Grafiati

Publicado: 12 de abril de 2025

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Artículos de revistas sobre el tema "Ultrasound Navigation"

Paczesny, Łukasz, Matthias Lorkowski, Tomasz Pielak, Rafał Wójcicki, Gazi Huri y Jan Zabrzyński. "The Role of Ultrasound Guidance in Mini-Invasive Musculoskeletal Surgery—A Pictorial Essay". Applied Sciences 13, n.º 19 (30 de septiembre de 2023): 10900. http://dx.doi.org/10.3390/app131910900.

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In this article, the authors review the role of ultrasound guidance in MSK mini-invasive surgery. Ultrasound imaging has become an important tool in the field of musculoskeletal examination and has advantages over the X-ray guidance traditionally used by orthopaedic surgeons. Ultrasound provides the 3D localization of the area where the instruments are being used, does not require X-ray’s certified personnel, and poses less of a health risk to the patient and the medical staff. This article explores the development and application of ultrasound navigation in mini-invasive surgery, including the use of ultrasound during different stages of arthroscopic procedures or for the entire operation. Ultrasounds can assist in setting access points around the joint, localize the pathology and assure its complete resection, identify vessels and nerves, establish access to and constant control of difficult operating areas with a high potential for neurovascular complications. In this paper, the authors also acknowledge that there are some disadvantages, including the need for additional equipment and personnel, a long learning curve, and the potential elongation of the procedure. To identify all of the essential studies that report relevant information and data concerning the ultrasounds navigation in mini-invasive MSK surgery, an extensive search of the major and significant electronic databases was performed by two authors. An investigation was conducted in January 2023 using the following key terms: ultrasounds navigation, ultrasounds in arthroscopy, ultrasounds in MSK, with no limits regarding the year of publication. The authors focused both on the advantages and disadvantages of ultrasound navigation in MSK mini-invasive surgery, and also on particular techniques in mini-invasive and arthroscopic surgeries. The described techniques are the application of ultrasound in arthroscopy (knee, hip, and shoulder), hallux rigidus surgery, mini-invasive Achilles tendon surgery, gastrocnemius recession, carpal tunnel release, and hematoma evacuation.

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Onogi, Shinya, Kohji Masuda y Makoto Hashizume. "Freehand 3D Ultrasound Technique for Ultrasound Navigation". Journal of Japan Society of Computer Aided Surgery 21, n.º 2 (2019): 75–80. http://dx.doi.org/10.5759/jscas.21.75.

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Bopp, Miriam, Benjamin Saß, Mirza Pojskic, Alexander Grote y Christopher Nimsky. "Intraoperative navigated ultrasound in posterior fossa surgery". Current Directions in Biomedical Engineering 10, n.º 2 (14 de septiembre de 2024): 115–17. http://dx.doi.org/10.1515/cdbme-2024-1081.

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Abstract High navigation accuracy is a prerequisite for tailored and safe tumor resections. However, in posterior fossa surgery, especially in the semi-sitting position, navigation is often considered to be non-useful due to limited accuracy caused by gravitational effects and brain-shift. To enable navigation in these surgical approaches intraoperative evaluation of accuracy and navigation update strategies are required. Navigated intraoperative ultrasound (iUS) might serve as valuable tool to quantify navigation accuracy and even update navigation to gain higher accuracy. Data of 23 patients (28 lesions) undergoing navigation supported surgery in the posterior fossa with application of navigated iUS including acquisition of a 3D iUS data set were evaluated retrospectively based on intraoperative ratings on accuracy and tumor segmentation based on preoperative magnetic resonance imaging (MRI) and iUS data. In nine cases (eleven lesions) navigation was rated “insufficient” leading to a navigation update by manually outlining the tumor volumes within the iUS data set, whereas in all other cases navigation accuracy was rated “sufficient” with no need for further updates. Tumor volume was comparable between MRIand iUS-based segmentation. IUS was successfully applied in navigation-supported surgery in the posterior fossa in the semisitting position enabling continuous navigation-support throughout surgery by evaluation of navigation accuracy and navigation updates, supporting safe maximum tumor resection.

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Marinho, Alexandre M. N., Manali Barua, John Haller y Timothy C. Ryken. "Enhanced Anatomic Visualization with Ultrasound-Assisted Intracranial Image-Guidance in Neurosurgery". Technology in Cancer Research & Treatment 1, n.º 3 (junio de 2002): 181–85. http://dx.doi.org/10.1177/153303460200100303.

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Anatomical comparisons between ultrasound images and magnetic resonance imaging (MRI)/computed tomography (CT) preoperative images were performed in four ultrasound-assisted image-guided intracranial surgeries. An ultrasound scanner connected to a surgical navigation system allowed the neurosurgeon to acquire useful views from that integration, offering an improved method for visualization. This surgical navigation device and associated ultrasound provides real-time brain shift correction. The accuracy of navigation depends on the identification of the anatomic structures. Despite some limitations of the ultrasound images, the ability to compare preoperative MRI and intraoperative ultrasound proved useful to the surgeon.

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Snyder, Laura A., Cameron G. McDougall, Robert F. Spetzler y Joseph M. Zabramski. "Neck Tumor Dissection Improved With 3-Dimensional Ultrasound Image Guidance: Technical Case Report". Operative Neurosurgery 10, n.º 1 (1 de marzo de 2014): E183—E189. http://dx.doi.org/10.1227/neu.0000000000000248.

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Abstract BACKGROUND AND IMPORTANCE: Three-dimensional ultrasound navigation has been performed to assist in resection of cranial and spinal tumors, but to the best of our knowledge, no one has described the use of real-time 3-dimensional ultrasound navigation in the resection of neck tumors beyond biopsy. CLINICAL PRESENTATION: This case report describes the use of 3-dimensional ultrasonic navigation in assisting with resection of a large neck paraganglioma. The 3-dimensional ultrasonic navigation improved real-time visualization of the carotid arteries, the trachea, and other vital structures. CONCLUSION: The use of 3-dimensional ultrasound navigation should be considered in aiding resection of large neck tumors because it can allow more efficient and safer tumor resection.

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Kim, Deborah. "Fusion Navigation". Canadian Journal of Medical Sonography 9, n.º 3 (1 de diciembre de 2018): 26–37. http://dx.doi.org/10.3138/cjms.v9i3.26.

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Multimodality image registration and fusion plays a vital role in clinical practice for routine diagnosis, follow up, and treatment. The acceptance that one imaging modality will complement another is further indicated through the uptake of dual modality imaging technologies. This article will discuss fusion imaging within the context of ultrasound while covering some clinical and technical considerations, and case examples.

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Tirakotai, Wuttipong, Dorothea Miller, Stefan Heinze, Ludwig Benes, Helmut Bertalanffy y Ulrich Sure. "A Novel Platform for Image-guided Ultrasound". Neurosurgery 58, n.º 4 (1 de abril de 2006): 710–18. http://dx.doi.org/10.1227/01.neu.0000204454.52414.7a.

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Abstract OBJECTIVE: The combination of classic neuronavigation and intraoperative ultrasound is a recent innovation in image guidance technology. However, this technique requires two hardware components (neuronavigation and an ultrasound system). It was the aim of the study to describe a new simplified technology of a so-called one-platform navigation system developed by our institution in collaboration with the industry and to demonstrate its range of various applications. METHODS: An ultrasound device (IGSonic; BrainLAB, Munich, Germany) is integrated into the VectorVision2 navigation system (BrainLAB, Munich, Germany). The IGSonic Probe 10V5 is connected to the VectorVision Navigation station via an IGSonic Device Box. Once the ultrasound probe is calibrated, the navigated ultrasound displays the sonographic image of the intracranial anatomy on the navigation screen in a composed overlay fashion. It might depict vascular structures within the ultrasound plane by a duplex mode. Ultrasound can also be operated independently from navigation. RESULTS: The VectorVision2 system combines intraoperative ultrasound data sets with preoperatively acquired neuronavigation data sets in plug and play fashion. The system provides a cost-effective intraoperative imaging modality that offers a good anatomic orientation by various composite images, including the display of the amount of brain shift. In our institution, the comprehensible interface led to a routine use of the technology by several neurosurgeons who had not been familiar with the ultrasound technology before. CONCLUSION: The integration of an ultrasound device into an existing navigation system has been successfully developed. The system offers a friendly user interface and cost-effective intraoperative imaging feedback. Although brain shift can be visualized by an image overlay technology as demonstrated by the present system, future developments should aim at fusion techniques of both intra- and preoperative image data sets.

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Katirji, Linda y Angelo Cruz. "The Utility of a Hospital System-Specific Emergency Medicine Residency Orientation". Prehospital and Disaster Medicine 38, S1 (mayo de 2023): s126—s127. http://dx.doi.org/10.1017/s1049023x23003345.

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Introduction:The transition to residency is a challenging time in the medical trainee’s career. In addition to learning and implementing knowledge specific to emergency medicine, logistics and system nuances can initially impede a learner’s ability to begin the process of mastering their profession. In an attempt to ameliorate this transition to residency an orientation was created to introduce concepts of local ultrasound documentation, resuscitation protocols, EMR navigation, and procedural kits.Method:Interns were given a pre-workshop survey on comfort level (1-5 Likert) of ultrasound documentation, resuscitation protocols, EMR navigation, and procedural kits. They rotated through four workshop stations in small groups. The first was an ultrasound workshop showcasing our commonly used ultrasound and how we capture images and videos into our medical system for review. The next was institution specific protocols for medical and trauma resuscitation using simulation. Third was a workshop on how to navigate our electronic medical record with simple overviews of documentation and order entry. Lastly, they went through arterial and central line kits to familiarize themselves with the contents. A post-workshop survey was given.Results:Comfort with ultrasound documentation pre-workshop mean was 4.0 with a post-workshop mean of 4.45 (p=0.068). Comfort with resuscitation pre-workshop mean of 2.91 increased to 3.91 (p=0.008). Electronic medical record documentation comfort rose from a mean of 3.5 to 4.27 (p=0.007). Comfort navigating procedural kits increased to a mean of 4.09 from 3 (p=0.002).Conclusion:There was a statistically significant increase in comfort level with ultrasound documentation, resuscitation protocols, EMR navigation, and procedural kits after completion of the workshops. Only ultrasound documentation had a p value less than 0.05. It can be reasonably deduced that focusing on institutionally specific aspects of workflow can help interns expedite their education by familiarizing them with these nuances prior to their first shift.

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Koryachkin, V. A. "Peripheral nerve blocks and ultrasound navigation". Regional Anesthesia and Acute Pain Management 14, n.º 1 (17 de septiembre de 2020): 4–5. http://dx.doi.org/10.17816/1993-6508-2020-14-1-4-5.

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The use of ultrasound in anesthetic practice has contributed to the creation of new techniques for blocking peripheral nerves (PEC I, PEC II, TAP-block, QL-block, IPACK). At the same time, the creation of new blocks with ultrasound navigation deepens the gap between more experienced anesthesiologists and their younger colleagues who prefer to avoid the use of regional anesthesia. A way out of this situation seems to us to create and introduce into practice a list of basic methods of regional anesthesia, which can provide anesthesia during the most frequently performed surgical interventions. We believe that there is every reason to change the paradigm many blockades for the elite to several blockades for all.

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Zhang, Wei. "Navigation among multiple breast ultrasound volumes". Journal of the Acoustical Society of America 128, n.º 5 (2010): 3278. http://dx.doi.org/10.1121/1.3525355.

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Tesis sobre el tema "Ultrasound Navigation"

Schwartz, Benjamin Matthew. "Biometric Navigation with Ultrasound". Thesis, Harvard University, 2012. http://dissertations.umi.com/gsas.harvard:10431.

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We have designed and demonstrated a new class of medical navigation methods that use the fingerprint-like biometrically distinct ultrasound echo patterns produced by different locations in tissue. As an example of this new biometric navigation approach, we have constructed and tested a system that uses ultrasound data to achieve prospective motion compensation in MRI, especially for respiratory motion during interventional MRI procedures in moving organs such as the liver. The ultrasound measurements are collated with geometrical information from MRI during a training stage to form a mapping table that relates ultrasound measurements to positions. During prospective correction, the system makes frequent ultrasound measurements and uses the map to determine the corresponding position. Results in motorized linear motion phantoms and freely breathing animals indicate that the system performs well. Apparent motion is reduced by up to 97.8%, and motion artifacts are reduced or eliminated in 2D Spoiled Gradient-Echo images. The motion compensation is sufficient to permit MRI thermometry of focused ultrasound heating during respiratory-like motion, with results similar to those obtained in the absence of motion. This new technique may have applications for MRI thermometry and other dynamic imaging in the abdomen during free breathing. We have also extended this technique to situations in which external position information during training is unavailable or incomplete, by extending the concept of Simultaneous Localization and Mapping to include determining the topology of a dense motion path through a gaussian random field. In the course of these investigations, we have also developed modified forms of referenceless MRI thermometry and Kalman filtering, specially adapted to optimize accuracy under our experimental conditions.

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Langø, Thomas. "Ultrasound Guided Surgery: Image Processing and Navigation". Doctoral thesis, Norwegian University of Science and Technology, Faculty of Information Technology, Mathematics and Electrical Engineering, 2000. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-491.

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The need for spectrally efficient transmission on mobile and wireless channels is prevalent. A promising scheme for such transmission is adaptive coded modulation. In this thesis, techniques for assessing the performance of such systems are presented. One of the vulnerable points of such systems is the need for a reliable feedback channel. Channel prediction is proposed as a technique to combat the harmful effects of feedback delay.

The Nakagami distribution is often employed in a model for the fading envelope of a wireless channel; this leads to a gamma-distributed signaltonoise ratio. Nakagami (1960) provides expressions for the probability density function (PDF) of the product, sum, and ratio of two correlated gamma-distributed random variables (RVs). However, such an expression for the difference between two such RVs has not been provided by Nakagami.

A new expression for this PDF is provided in this dissertation, and it is shown that it is closely related to a distribution first described by McKay (1932). Applications of the new PDF include outage probability calculation in an environment with self-interference and assessment of the quality of certain channel estimation techniques.

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Diakov, Georgi. "Automated patient tracking for 3D-navigation with ultrasound". München AVM, 2010. http://d-nb.info/1000247910/04.

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Rafii-Tari, Hedyeh. "Panorama ultrasound for navigation and guidance of epidural anesthesia". Thesis, University of British Columbia, 2011. http://hdl.handle.net/2429/37439.

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Epidural anesthesia is a common but challenging procedure in obstetrics and surgery, especially for the obese patient, and can result in complications such as dural puncture and nerve injury. Ultrasound has the potential to significantly improve epidural needle guidance, by being able to depict the spinal anatomy and the epidural space. An ultrasound guidance system is therefore proposed, using a transducer-mounted camera to create 3D panorama images of the spine relative to markings on the skin. Guidance will include depiction of the spinal anatomy, identification of individual vertebrae, and selection of a suitable puncture site, trajectory and depth of needle insertion. The camera tracks the transducer movement using a specialized strip of markers attached to the skin surface. This enables 6-DOF absolute position estimation of the transducer with respect to the patient over the full range of the spine. The 3D panorama image can then be resliced in various parasagittal planes to show either the target epidural spaces or the laminae. The overall accuracy of the panorama reconstruction is validated by measuring inter-feature distances of a phantom of steel beads against measurements obtained from an optical tracking system (Optotrak), resulting in an average error of 0.64 mm between camera and Optotrak. The algorithm is then tested in vivo by creating panorama images from human subjects (n=20), obtaining measurements for depth of insertion to the epidural space, intervertebral spacings, and registration of interspinous gaps to the skin, and validating these against independent measurements by an experienced sonographer. The results showed an average error of 1.69 mm (4.23%) for the depth measurements, average error of 4.44 mm (15.2%) for the interspinous distance measurements, and an average error of 6.65 mm for registering the interspinous gaps to the skin (corresponding to 18.5% of the interspinous distances). Tracking of ultrasound images with respect to the marker is implemented in real time and visualized using the 3D Slicer software package.

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Sandoval, Niño Zulma. "Planning and guidance of ultrasound guided High Intensity Focused Ultrasound cardiac arrhythmia therapy". Thesis, Rennes 1, 2015. http://www.theses.fr/2015REN1S044/document.

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L'objectif des travaux présentés dans ce document est de développer de nouvelles méthodes de traitement d'images pour améliorer la planification et le guidage d'une thérapie par voie transœsophagienne de la fibrillation auriculaire à l'aide d'Ultrason Focalisé Haute Intensité. Le document est divisé en deux parties : la planification du traitement et le guidage de la thérapie. Pour la planification de la thérapie, l'idée est d'exploiter l'information acquise au stade préopératoire par un scanner X ou IRM afin de retrouver l'anatomie spécifique du patient et à y définir le futur geste thérapeutique. Plus particulièrement, nos différentes contributions ont porté sur une approche multi-atlas de segmentation de l'oreillette gauche et des veines pulmonaires ; le tracé des lignes de lésions sur le volume initial ou segmenté ; et la reconstruction d'un volume adapté à la future navigation transœsophagienne. Pour le guidage de la thérapie, nous proposons une nouvelle approche de recalage qui permet d'aligner les images échographiques peropératoires 2D et l'information 3D CT préopératoire. Dans cette approche, dans un premier temps nous avons sélectionné la mesure de similarité la plus adaptée à notre problématique à l'aide d'une évaluation systématique puis nous avons tiré profit des contraintes imposées à la sonde transœsophagienne par l'anatomie du patient pour simplifier la procédure de recalage. Toutes ces méthodes ont été évaluées sur des fantômes numériques ou physiques et sur des données cliniques
The work presented in this document aims at developing new image-processing methods to improve the planning and guidance of transesophageal HIFU atrial fibrillation therapy. This document is divided into two parts, namely therapy planning and therapy guidance. We first propose novel therapy planning methods that exploit high-resolution pre-operative CT or MRI information to extract patient-specific anatomical details and to define future therapeutic procedures. Our specific methodological contributions concern the following: an automatically-refined atlas-based segmentation approach to extract the left atrium and pulmonary veins; the delineation of the lesion lines on the original or segmented volume; and the reconstruction of a volume adapted to future intraoperative transesophageal navigation. Secondly, our proposal of a novel registration approach for use in therapy guidance aligns intraoperative 2D ultrasound with preoperative 3D CT information. This approach first carries out a systematic statistical evaluation to select the best similarity measure for our application and then takes advantage of the geometrical constraints of the transesophageal HIFU probe to simplify the registration process. Our proposed methods have been evaluated on digital and/or physical phantoms and on real clinical data

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Biscaldi, Thomas. "Ultrasons focalisés interstitiels guidés par la navigation échographique pour les thérapies conformationnelles du carcinome hépatocellulaire". Electronic Thesis or Diss., Lyon 1, 2024. http://www.theses.fr/2024LYO10304.

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Le carcinome hépatocellulaire (CHC) est le sixième cancer en termes d'incidence dans le monde et le quatrième le plus meurtrier en 2018. La transplantation hépatique est le moyen le plus efficace de traiter le CHC, permettant de traiter le cancer et la maladie hépatique sous-jacente. Cependant, en raison de la pénurie de greffons, elle n'est pratiquée que chez 3 à 4 % des patients. Les traitements d'ablation thermique administrés par voie interstitielle constituent une alternative moins invasive pour le patient et présentent l'avantage de préserver une plus grande proportion de tissu non tumoral. Toutefois, ces techniques de traitement interstitiel ne permettent pas de traiter les CHC de plus de 2,5 cm de rayon ou nécessitent l'insertion de plusieurs aiguilles de traitement, ce qui augmente la complexité de la procédure. En outre, le traitement n'est pas conformationnel : le volume d'ablation thermique ne s'adapte pas à la forme de la tumeur. Cela peut parfois empêcher le traitement d'être effectué sans risquer d'endommager des structures anatomiques critiques. Les techniques de thérapie par ultrasons focalisés de haute intensité (HIFU) sont prometteuses dans le cas du CHC car elles permettraient de réaliser des ablations conformationnelles sur un rayon étendu jusqu’à 3 cm. L'utilisation de ce type de technologie pourrait traiter des CHC actuellement non traitables tout en préservant les structures à risque, élargissant ainsi le rôle des ablations interstitielles. Des simulations d'un nouveau cathéter ultrasonore ont été réalisées pour concevoir un cahier des charges et vérifier la faisabilité du projet en termes de focalisation et d'ablation. Un cathéter ultrasonore bimodal (assurant l’imagerie B-mode et la thérapie thermique avec les mêmes éléments) de 3 mm de diamètre et de 64 éléments piézoélectriques fonctionnant à 5,5 MHz a été sous-traité en conséquence. Tout d'abord, les capacités d'imagerie échographique ont été évaluées et confirmées. Le prototype a ensuite été caractérisé électroniquement et acoustiquement. Les performances thermiques du cathéter ont été étudiées en trois dimensions sous thermométrie IRM et ont validé les outils de simulation tout en démontrant l'aspect directionnel des échauffements induits. Ces résultats ont conduit à réaliser des essais in vitro sur foie animal. Des ablations radiales centimétriques ont confirmé, pour la première fois, les capacités du cathéter à effectuer des ablations thermiques. La robustesse du prototype sur l'ensemble des essais a été étudiée. Enfin, la remise en place d'une plateforme de navigation échographique a donné lieu à la reconstruction de volumes tumoraux en 3 dimensions. L'association du cathéter avec cette plateforme robotisée a permis de générer des ablations thermiques volumiques en 3 dimensions et de traiter des volumes compatibles avec les tumeurs primaires rencontrées en pratique clinique
Hepatocellular carcinoma (HCC) is the sixth most common cancer in terms of incidence worldwide, and the fourth most deadly in 2018. Liver transplantation is the most effective way to treat HCC, enabling both the cancer and the underlying liver disease to be treated. However, due to the shortage of grafts, it is performed in only 3% to 4% of patients. Interstitial thermal ablation treatments offer a less invasive alternative for the patient, and have the advantage of preserving a greater proportion of non-tumoral tissue. However, these interstitial treatment techniques are unable to treat HCCs larger than 2.5 cm in radius, or require the insertion of multiple treatment needles, increasing the complexity of the procedure. In addition, the treatment is not conformal: the thermal ablation volume does not adapt to the shape of the tumor. This can sometimes prevent the treatment from being carried out without risking damage to critical anatomical structures. High-intensity focused ultrasound (HIFU) therapy techniques hold promise for HCC, enabling conformal ablation over an extended radius of up to 3 cm. The use of this type of technology could treat currently untreatable HCC while preserving at-risk structures, thus expanding the role of interstitial ablations. Simulations of a new ultrasound catheter were carried out to design specifications and verify the feasibility of the project in terms of focusing and ablation. A bimodal ultrasound catheter (providing B-mode imaging and thermal therapy with the same elements) with a diameter of 3 mm and 64 piezoelectric elements operating at 5.5 MHz was subcontracted accordingly. First, ultrasound imaging capabilities were assessed and confirmed. The prototype was then characterized electronically and acoustically. The thermal performance of the catheter was studied in three dimensions under MRI thermometry, validating the simulation tools and demonstrating the directional aspect of induced heating. These results led to in vitro tests on animal liver. Centimeter radial ablations confirmed, for the first time, the catheter's ability to perform thermal ablations. The prototype's robustness over the full range of tests was also studied. Finally, the re-installation of an ultrasound navigation platform led to the reconstruction of tumor volumes in 3 dimensions. Combining the catheter with this robotized platform enabled the generation of 3-D volumetric thermal ablations, and the treatment of volumes compatible with primary tumors encountered in clinical practice

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Nouhoum, Mohamed Nabhane. "Neuro-navigation automatique pour la neuro-imagerie fonctionnelle ultrasonore". Electronic Thesis or Diss., Université Paris sciences et lettres, 2021. http://www.theses.fr/2021UPSLS047.

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L’échographie ultrarapide est une nouvelle méthode d'imagerie basée sur la transmission des ondes planes et qui permet d'imager les tissus biologiques à très haute cadence et avec une excellente résolution spatiale. Lorsqu'elle est appliqué à l'imagerie Doppler, elle permet d'améliorer considérablement la détection du flux sanguin dans les vaisseaux avec une sensibilité considérablement augmentée par rapport à l'imagerie conventionnelle basée sur la transmission des ondes focalisées. Ainsi le Doppler ultrarapide a ouvert d'autres champs d'applications à l'échographie faisant d’elle une nouvelle modalité précieuse de neuro-imagerie fonctionnelle capable de reconstruire la micro-vascularisation cérébrale mais aussi de mesurer indirectement l’activité neuronale en se basant sur le couplage neuro-vasculaire. Cependant l’expansion de l’imagerie fonctionnelle ultrasonore (fUS) est limitée par la difficulté à se repérer dans le réseau vasculaire complexe du cerveau, ce qui rend complexe le positionnement de la sonde échographique et l’analyse des données. Il est donc crucial de mettre en place des outils de neuro-informatique dédiés à l’imagerie fonctionnelle ultrasonore au même titre que l’imagerie fonctionnelle par IRM qui est la modalité de référence.Les travaux de cette thèse portent donc sur le développement et la validation du GPS cérébral, un outil de neuro-navigation automatique à partir des empreintes vasculaires Doppler ultrasensible de la souris et du rat. Dans un premier temps un template anatomique vasculaire a été construit puis recalé sur des atlas familiers (Atlas Allen pour la souris et l’atlas SIGMA pour le rat) permettant ainsi la création d’un atlas vasculaire pouvant servir de référence lors des sessions d’imagerie fUS pour recaler des données expérimentales et leur fournir un contexte anatomique. La précision du recalage vasculaire a été quantifié à partir des images vasculaires super-résolues obtenues par microscopie de localisation ultrasonore.Par la suite après avoir développé la chaîne neuro-informatique intégrée à une nouvelle génération de neuro-imageurs, nous avons montré la capacité du GPS cérébral à guider le positionnement d’une sonde linéaire sur des zones fonctionnelles choisies afin d’obtenir des cartes d’activation fonctionnelle même sur des plans obliques complexes. Nous avons aussi montré que le GPS cérébral peut être utilisé pour calculer automatiquement la matrice de connectivité en fournissant un contexte anatomique et une segmentation automatique des zones fonctionnelles.Pour aller plus loin nous avons exploré le potentiel du GPS vasculaire à guider automatiquement les injections intra-cérébrales dans des structures profondes. Des résultats encourageants confirmés par des images de microscopie de fluorescence ont pu être obtenus après injection d’un traceur neuronal dans le noyau thalamique. Toujours à titre exploratoire nous nous sommes intéressés à la reconstruction des images anatomiques structurelles du cerveau en plus des images vasculaires généralement générées afin d’évaluer l’échogénicité de certaines zones cérébrales identifiées à l’aide du GPS vasculaire. Enfin nous avons conduit une étude de quantification longitudinale dans le cadre du processus de consolidation du trace mnésique chez la souris. Ces travaux permettent d’apporter des nouveaux outils de neuro-imagerie pour renforcer le potentiel de l’imagerie fonctionnelle ultrasonore et permettre aux experts et aux non-experts neuroanatomistes de réaliser des protocoles standardisés, reproductibles, avec plus de précision et impliquant des études sur de grosses cohortes
Ultrafast ultrasound imaging is a recent method based on transmission of plane waves which enables the visualization of biological media with high spatio-temporal resolution. When applied to Doppler imaging, it enables detection of blood flow with very high sensitivity compared to conventional ultrasound Doppler usually limited to high blood flow imaging in cardiology. This advances have rendered functional ultrasound (fUS) imaging a valuable neuroimaging modality capable of mapping cerebral vascular networks, but also to indirectly capture neuronal activity with high sensitivity thanks to the neurovascular coupling. However, the expansion of fUS imaging is still limited by the difficulty to identify cerebral structures during experiments based solely on the Doppler images and the shape of the vessels, which complicates the positioning of the ultrasound probe and the data analysis of the data. It is therefore crucial to set up tools dedicated to functional ultrasound imaging in the same way as functional imaging by MRI, which remains the reference modality.This thesis focuses on the development and validation of cerebral GPS, an automatic neuro-navigation tool based on ultrasensitive Doppler vascular footprint of mice and rats. Initially, a vascular anatomical template was built and then registered on familiar atlases (Allen Atlas for the mouse and the SIGMA atlas for the rat) thus allowing the creation of a vascular atlas that can serve as a reference during fUS imaging sessions to align experimental data and provide an anatomical context. The accuracy of the vascular registration was quantified from the super-resolved vascular images obtained with ultrasound localization microscopy.Secondly, the neuro-informatic pipeline has been developed and integrated into a new generation of neuroimaging devices to perform online navigation. We then demonstrated the capability of the system to position itself automatically over chosen anatomical structures and to obtain corresponding functional activation maps even in complex oblique planes. Additionally, we show that the system can be used to acquire and estimate functional connectivity matrices automatically.To go further we explored the potential of vascular GPS to automatically guide intracerebral injections into deep structures. Encouraging results confirmed by fluorescence microscopy images were obtained after injection of a neuronal tracer into the thalamic nucleus. Still on an exploratory basis, we were interested in the reconstruction of structural anatomical images of the brain in addition to the vascular images generally reconstructed in order to assess the echogenicity of a few brain areas identified using vascular GPS. Finally we carried out a longitudinal study in the framework of memory consolidation in rats.This work provides new neuroimaging tools to strengthen the potential of functional ultrasound imaging and allow neuroanatomists experts and non-expert to carry out standardized, reproducible protocols with more accuracy and involving studies on large cohorts

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Haddad, Oussama. "Suivi des structures osseuses par échographie : application à l'arthroplastie totale de la hanche". Thesis, Brest, 2017. http://www.theses.fr/2017BRES0028/document.

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L’objectif principal d’une Arthroplastie Totale de Hanche (ATH) est de réduire la douleur en reproduisant les propriétés mécaniques de l’articulation de la hanche à l'aide d'implants artificiels, qui assurent également une fonctionnalité optimale. Ce travail traite de la navigation de l’ATH, à base d’échographie, en mettant l'accent sur la navigation de l'implant fémoral. La conception d'un système de navigation pour l’ATH, basé sur l’échographie peropératoire et CT préopératoire et focalisant sur l’implant fémoral, est proposée. Il fournit un feed back visuel et quantitatif sur l'insertion de l'implant. Le pipeline de navigation proposé inclut : la calibration de la sonde, la segmentation tenant compte de la géométrie d’acquisition, et le recalage profitant de la forme quasi symétrique du fémur. La précision est évaluée en termes cliniques.Les temps d'exécution et la précision obtenus sont encourageants et rendent le pipeline proposé valable pour être évalué en utilisant des données réelles des patients. Une fois notre étude réussie le défi peropératoire, d’autres applications telles que l'arthroplastie totale de l'épaule et l'ablation du cancer osseux peuvent en profiter
The principal aim of a Total Hip Arthroplasty (THA) is to reduce pain by reproducing the hip joint mechanical properties using artificial implants. This work addresses the ultrasound based navigation of THA, with a focus on the femoral implant. Using a calibrated 3D ultrasound probe, the aim is to image and recognize the femur after implant insertion, then to provide quantitative and visual navigation instructions for optimal implant placement. US bone interfaces are estimated per line of sight, then mapped to CT model profiting from the femur symmetry. The inaccuracy of the proposed navigation system is quantified in clinical terms. The obtained runtimes and accuracies make the proposed pipeline worthy to be tested in the OR. Once the proposed pipeline succeeds the intraoperative challenge, navigated bone tumor ablation and total shoulder arthroplasty can profit from our work

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Edgcumbe, Philip. "Developing surgical navigation tools for minimally invasive surgery using ultrasound, structured light, tissue tracking and augmented reality". Thesis, University of British Columbia, 2017. http://hdl.handle.net/2429/63526.

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Daunizeau, Loïc. "Développement de la thérapie ultrasonore conformationnelle par voie interstitielle pour le traitement du carcinome hépatocellulaire". Electronic Thesis or Diss., Lyon, 2020. http://www.theses.fr/2020LYSE1326.

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Le carcinome hépatocellulaire est le principal cancer primaire du foie. Les procédures d’ablation thermique par voie interstitielle constituent un type de traitement curatif de ce cancer. Ces méthodes ne permettent pas toujours, de par leur nature physique (radio fréquence, micro-onde, laser, cryothérapie), de générer une ablation conformationnelle pour un volume tumoral donné. Dans certains cas, cela peut entraîner l’ablation d’un volume important de tissus non tumoraux. L'utilisation d'une sonde interstitielle ultrasonore disposant d’un transducteur avec de nombreux éléments indépendants, capable de générer des ultrasons focalisés de haute intensité (HIFU), permettrait théoriquement de lever cette limitation. D’autre part, le nombre élevé d’éléments permettrait également de disposer de capacités d’imagerie. Les travaux présentés dans cette thèse ont donc d’abord porté sur la conception du transducteur associé à ce type de sonde. Un design particulier a été proposé spécifiquement pour le traitement d’une tumeur de 4 cm de diamètre. S’est ensuite posé la question de la stratégie de planification du traitement à adopter pour obtenir une lésion la plus conformationnelle possible. Différentes stratégies ont été évaluées par simulations numériques. Toutes ont présentés des caractéristiques semblables tant en termes de conformation que de temps de traitement total. La focalisation ultrasonore s’est avérée en elle-même suffisante pour générer un traitement conformationnel. Finalement, une plateforme robotique a été développée pour le pilotage de prototypes de sondes ultrasonores interstitielles bimodales, aussi bien en mode imagerie qu’en mode thérapie. Cette plateforme a permis de réaliser in vitro, les planifications de traitement automatiques de plusieurs fantômes de tumeurs, en se basant sur la reconstruction ultrasonore 3D issue de l’imagerie échographique obtenue in situ par les sondes ultrasonores. En revanche, en mode thérapie les prototypes de sondes n’ont pas atteint leurs spécifications et n’ont pas réussi à générer des lésions thermiques dans des tissus hépatiques in vitro. La modularité de la plateforme robotique a rendu possible son utilisation avec un système de thérapie ultrasonore différent, à la fiabilité éprouvé. Avec ce système, la planification automatique du traitement, ainsi que l’exécution du traitement HIFU associé, ont pu être effectué in vitro avec succès par la plateforme
Hepatocellular carcinoma is the most common primary cancer of the liver. Interstitial thermal ablation procedures constitute a type of curative treatments for this cancer. Given the physical nature of the phenomenon used to modify temperature (radio frequency, micro wave, laser, cryotherapy), those methods may not be able to generate a conformal treatment for a given tumor shape. In some cases, this limitation may induce the thermal ablation of a large volume of non-tumor tissues. The use of an ultrasound interstitial probe mounted with a multi-element transducer capable of generating high intensity focused ultrasound (HIFU) may theoretically help to overcome this limitation. Also a transducer with an important number of elements may also provide in situ imaging. As a first step, the design of a transducer for interstitial ultrasound probe was studied. A specific configuration has been proposed for the treatment of tumors with a diameter of 4 cm. The question of the treatment planning method to adopt to reach an optimal conformal treatment has been then addressed by comparing numerical simulations of different strategies. All strategies were sufficiently conformal and none presented real assets compared to the others. Ultrasound focusing in itself provided the desired conformal thermal ablation. Finally, a robotic platform was developed for driving interstitial dual mode ultrasound probes, both in imaging and in therapy mode. This platform allowed the automatic treatment planning of in vitro tumor mimic phantoms, based on 3D ultrasound reconstruction from the B mode images obtained in situ by the interstitial probe. However, in therapy mode, the probes did not reach their specifications and did not manage to create thermal lesions in in vitro liver tissue sample. The modularity of the robotic platform allowed driving a different HIFU system, which was more robust. With this system, the platform managed to perform with success an automatic treatment planning and then the associated HIFU treatment in in vitro tissue sample

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Libros sobre el tema "Ultrasound Navigation"

Stoyanov, Danail, Zeike Taylor, Stephen Aylward, João Manuel R. S. Tavares, Yiming Xiao, Amber Simpson, Anne Martel et al., eds. Simulation, Image Processing, and Ultrasound Systems for Assisted Diagnosis and Navigation. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-030-01045-4.

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Aylward, Stephen, Shuo Li, Danail Stoyanov, João Manuel R.S. Tavares, Zeike Taylor, Yiming Xiao, Amber Simpson, Anne Martel y Lena Maier-Hein. Simulation, Image Processing, and Ultrasound Systems for Assisted Diagnosis and Navigation. Springer, 2018.

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Leeson, Paul, Cristiana Monteiro, Daniel Augustine y Harald Becher, eds. Echocardiography. Oxford University Press, 2020. http://dx.doi.org/10.1093/med/9780198804161.001.0001.

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Fully updated for its third edition, Echocardiography provides all of the essential information you need on echo acquisition, interpretation, and reporting in an easily readable and concise format. Featuring over 400 full colour images, this resource also comes with online access to 155 video clips to clarify complex issues, making it an invaluable guide for both the experienced and trainee cardiologist who performs echocardiography as part of their practice. Designed to align to international guidelines and help trainees undergoing accreditation or certification, including the BSE, EACVI, and ASE requirements, this handbook bridges the gap between entry-level texts and large textbooks, and is compact enough to carry around in clinical settings. It covers all echocardiography modalities, from acute echocardiography to transoesophageal and stress imaging. The third edition includes a simplified approach to the physics of ultrasound, a brand new chapter on interventional echocardiography, and a streamlined navigation between basic and advanced techniques. The sections on diastolic function, heart failure, and congenital heart disease have been expanded, and over 100 new illustrations, images, and schematic diagrams have been added to simplify images and anatomy for the reader.

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Abdelmalak, Basem. Anesthesia for Interventional Pulmonology. Oxford University Press, 2018. http://dx.doi.org/10.1093/med/9780190495756.003.0020.

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This chapter on anesthesia for interventional pulmonology (bronchoscopic) procedures addresses the anesthetic considerations and management for these procedures that are frequently performed in bronchoscopy suites outside of the operating room (OOOR). These include endobronchial ultrasound (EBUS) and electromagnetic navigational bronchoscopy (ENB) diagnostic procedures, as well as bronchoscopic therapeutic procedures. It discusses anesthesia techniques, different airway and ventilation options, anesthesia adjuvants, and helpful tips and clinical pearls aimed at ensuring patient safety while providing the best conditions to facilitate completion of the procedure. Utilizing standardized yet individualized protocols may help improve safety and clinical outcomes in these non–operating room anesthesia (NORA) service locations.

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Capítulos de libros sobre el tema "Ultrasound Navigation"

Martinie, John B. y Sharif Razzaque. "Computer-Assisted Navigation for Ultrasound “3-D Ultrasound”". En Abdominal Ultrasound for Surgeons, 243–53. New York, NY: Springer New York, 2014. http://dx.doi.org/10.1007/978-1-4614-9599-4_18.

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Mauri, Giovanni y Luigi Solbiati. "Virtual Navigation and Interventional Procedures". En Intraoperative Ultrasound (IOUS) in Neurosurgery, 123–34. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-25268-1_10.

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Paniagua, Beatriz, Dženan Zukic, Ricardo Ortiz, Stephen Aylward, Brent Golden, Tung Nguyen y Andinet Enquobahrie. "Ultrasound-Guided Navigation System for Orthognathic Surgery". En Augmented Environments for Computer-Assisted Interventions, 1–10. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-24601-7_1.

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Ellsmere, James, Jeffrey Stoll, David Rattner, David Brooks, Robert Kane, William Wells, Ron Kikinis y Kirby Vosburgh. "A Navigation System for Augmenting Laparoscopic Ultrasound". En Lecture Notes in Computer Science, 184–91. Berlin, Heidelberg: Springer Berlin Heidelberg, 2003. http://dx.doi.org/10.1007/978-3-540-39903-2_23.

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Broessner, Peter, Benjamin Hohlmann y Klaus Radermacher. "Ultrasound-based Navigation of Scaphoid Fracture Surgery". En Bildverarbeitung für die Medizin 2021, 28–33. Wiesbaden: Springer Fachmedien Wiesbaden, 2021. http://dx.doi.org/10.1007/978-3-658-33198-6_8.

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Kiefer, Hartmuth. "Ultrasound-Guided Acquisition of Bony Landmarks During Navigation". En Computer and Template Assisted Orthopedic Surgery, 129–36. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-29728-1_15.

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Amadou, Abdoul Aziz, Vivek Singh, Florin C. Ghesu, Young-Ho Kim, Laura Stanciulescu, Harshitha P. Sai, Puneet Sharma, Alistair Young, Ronak Rajani y Kawal Rhode. "Goal-Conditioned Reinforcement Learning for Ultrasound Navigation Guidance". En Lecture Notes in Computer Science, 319–29. Cham: Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-72120-5_30.

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Bao, Mingkun, Yan Wang, Xinlong Wei, Bosen Jia, Xiaolin Fan, Dong Lu, Yifan Gu et al. "Real-World Visual Navigation for Cardiac Ultrasound View Planning". En Lecture Notes in Computer Science, 317–26. Cham: Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-72378-0_30.

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Kibria, Md Golam y Hassan Rivaz. "GLUENet: Ultrasound Elastography Using Convolutional Neural Network". En Simulation, Image Processing, and Ultrasound Systems for Assisted Diagnosis and Navigation, 21–28. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-030-01045-4_3.

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Sakuma, Ichiro, Yuichi Takai, Etsuko Kobayashi, Hiroshi Inada, Katsuhiko Fujimoto y Tekehide Asano. "Navigation of High Intensity Focused Ultrasound Applicator with an Integrated Three-Dimensional Ultrasound Imaging System". En Medical Image Computing and Computer-Assisted Intervention — MICCAI 2002, 133–39. Berlin, Heidelberg: Springer Berlin Heidelberg, 2002. http://dx.doi.org/10.1007/3-540-45787-9_17.

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Actas de conferencias sobre el tema "Ultrasound Navigation"

Müller, Hanna, Victor Kartsch, Michele Magno y Luca Benini. "BatDeck: Advancing Nano-Drone Navigation with Low-Power Ultrasound-Based Obstacle Avoidance". En 2024 IEEE Sensors Applications Symposium (SAS), 1–6. IEEE, 2024. http://dx.doi.org/10.1109/sas60918.2024.10636518.

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Moreno, Patricio, Claudio Pose y Juan Giribet. "INS/Ultrasound navigation system". En 2015 Sixth Argentine Conference on Embedded Systems (CASE). IEEE, 2015. http://dx.doi.org/10.1109/sase-case.2015.7295839.

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Kasatkin, A. A., A. L. Urakov y A. R. Nigmatullina. "Venous catheterization with ultrasound navigation". En NEW OPERATIONAL TECHNOLOGIES (NEWOT’2015): Proceedings of the 5th International Scientific Conference «New Operational Technologies». AIP Publishing LLC, 2015. http://dx.doi.org/10.1063/1.4936061.

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Socorro-Marrero, Guillermo V., Carlos Luque, Csaba Pinter, Babacar Diao, Tamas Ungi, Andras Lasso, Gabor Fichtinger y Juan Ruiz-Alzola. "Affordable Medical Ultrasound Navigation Training". En 2019 IEEE Global Humanitarian Technology Conference (GHTC). IEEE, 2019. http://dx.doi.org/10.1109/ghtc46095.2019.9033036.

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Park, Sara, Jongseong Jang, Jeesu Kim, Young Soo Kim y Chulhong Kim. "Photoacoustic image-guided navigation system for surgery (Conference Presentation)". En Photons Plus Ultrasound: Imaging and Sensing 2017, editado por Alexander A. Oraevsky y Lihong V. Wang. SPIE, 2017. http://dx.doi.org/10.1117/12.2251292.

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Nascimento Jr., Cairo L., Neusa Maria Franco Oliveira y Ernani Reis. "Time of Flight Ultrasound Indoor Navigation System". En 24th ABCM International Congress of Mechanical Engineering. ABCM, 2017. http://dx.doi.org/10.26678/abcm.cobem2017.cob17-0316.

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Li, Lei, Zhiguang Wu, Yiran Yang, Peng Hu, Wei Gao y Lihong V. Wang. "Photoacoustic computed tomography guided microrobots for targeted navigation in intestines in vivo". En Photons Plus Ultrasound: Imaging and Sensing 2020, editado por Alexander A. Oraevsky y Lihong V. Wang. SPIE, 2020. http://dx.doi.org/10.1117/12.2547559.

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Langsch, Fernanda, Salvatore Virga, Javier Esteban, Rudiger Gobl y Nassir Navab. "Robotic Ultrasound for Catheter Navigation in Endovascular Procedures". En 2019 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS). IEEE, 2019. http://dx.doi.org/10.1109/iros40897.2019.8967652.

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Fischer, Carl, Kavitha Muthukrishnan, Mike Hazas y Hans Gellersen. "Ultrasound-aided pedestrian dead reckoning for indoor navigation". En the first ACM international workshop. New York, New York, USA: ACM Press, 2008. http://dx.doi.org/10.1145/1410012.1410020.

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Hase, Hannes, Mohammad Farid Azampour, Maria Tirindelli, Magdalini Paschali, Walter Simson, Emad Fatemizadeh y Nassir Navab. "Ultrasound-Guided Robotic Navigation with Deep Reinforcement Learning". En 2020 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS). IEEE, 2020. http://dx.doi.org/10.1109/iros45743.2020.9340913.

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