Littérature scientifique sur le sujet « Phantom arteries »
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Articles de revues sur le sujet "Phantom arteries"
Roldan, Maria, et Panicos A. Kyriacou. « Head Phantom for the Acquisition of Pulsatile Optical Signals for Traumatic Brain Injury Monitoring ». Photonics 10, no 5 (26 avril 2023) : 504. http://dx.doi.org/10.3390/photonics10050504.
Texte intégralYang, Ke, Peter R. Hoskins, George A. Corner, Chunming Xia et Zhihong Huang. « Wall Shear Stress Measurement in Carotid Artery Phantoms with Variation in Degree of Stenosis Using Plane Wave Vector Doppler ». Applied Sciences 13, no 1 (2 janvier 2023) : 617. http://dx.doi.org/10.3390/app13010617.
Texte intégralChamaani, Somayyeh, Jürgen Sachs, Alexandra Prokhorova, Carsten Smeenk, Tim Erich Wegner et Marko Helbig. « Microwave Angiography by Ultra-Wideband Sounding : A Preliminary Investigation ». Diagnostics 13, no 18 (14 septembre 2023) : 2950. http://dx.doi.org/10.3390/diagnostics13182950.
Texte intégralNgaile, Justin E., Peter K. Msaki, Evarist M. Kahuluda, Furaha M. Chuma, Jerome M. Mwimanzi et Ahmed M. Jusabani. « Effect of Lowering Tube Potential and Increase Iodine Concentration of Contrast Medium on Radiation Dose and Image Quality in Computed Tomography Pulmonary Angiography Procedure : A Phantom Study ». Tanzania Journal of Science 47, no 3 (15 août 2021) : 1211–24. http://dx.doi.org/10.4314/tjs.v47i3.29.
Texte intégralCooper, Benjamin Z., Jon D. Kirwin, Thomas F. Panetta, F. Michele Weinreb, Jose A. Ramirez, John G. Najjar, Seth B. Blattman, William Rodino et Mark Song. « Accuracy of Intravascular Ultrasound for Diameter Measurement of Phantom Arteries ». Journal of Surgical Research 100, no 1 (septembre 2001) : 99–105. http://dx.doi.org/10.1006/jsre.2001.6214.
Texte intégralJohnson, Jami L., Kasper van Wijk et Michelle Sabick. « Characterizing Phantom Arteries with Multi-channel Laser Ultrasonics and Photo-acoustics ». Ultrasound in Medicine & ; Biology 40, no 3 (mars 2014) : 513–20. http://dx.doi.org/10.1016/j.ultrasmedbio.2013.10.011.
Texte intégralMai, Jerome J., Fermin A. Lupotti et Michael F. Insana. « Vascular Elasticity from Regional Displacement Estimates ». Ultrasonic Imaging 25, no 3 (juillet 2003) : 171–92. http://dx.doi.org/10.1177/016173460302500305.
Texte intégralUdekwe, Charles Nnamdi, et Akinlolu Adeniran Ponnle. « Application of Cardinal Points Symmetry Landmarks Distribution Model to B-Mode Ultrasound Images of Transverse Cross-section of Thin-walled Phantom Carotid Arteries ». European Journal of Engineering Research and Science 4, no 12 (19 décembre 2019) : 96–101. http://dx.doi.org/10.24018/ejers.2019.4.12.1656.
Texte intégralUdekwe, Charles Nnamdi, et Akinlolu Adeniran Ponnle. « Application of Cardinal Points Symmetry Landmarks Distribution Model to B-Mode Ultrasound Images of Transverse Cross-section of Thin-walled Phantom Carotid Arteries ». European Journal of Engineering and Technology Research 4, no 12 (19 décembre 2019) : 96–101. http://dx.doi.org/10.24018/ejeng.2019.4.12.1656.
Texte intégralCha, Hyo-Jeong, Byung-Ju Yi et Jong Yun Won. « An assembly-type master–slave catheter and guidewire driving system for vascular intervention ». Proceedings of the Institution of Mechanical Engineers, Part H : Journal of Engineering in Medicine 231, no 1 (22 décembre 2016) : 69–79. http://dx.doi.org/10.1177/0954411916679328.
Texte intégralThèses sur le sujet "Phantom arteries"
Zhou, Xiaowei. « Investigation of ultrasound-measured blood flow related parameters in radial and ulnar arteries ». Thesis, University of Dundee, 2017. https://discovery.dundee.ac.uk/en/studentTheses/cb2a68cb-949a-413f-b561-c137b7605583.
Texte intégralZauli, Matteo. « Sviluppo di un phantom per l’analisi del flusso in carotidi mediante acquisizioni ultrasoniche ». Master's thesis, Alma Mater Studiorum - Università di Bologna, 2019.
Trouver le texte intégralRaviol, Jolan. « Vers l'évaluation du risque de rupture des anévrismes intracrâniens : caractérisation mécanique in vivo de la paroi artérielle ». Electronic Thesis or Diss., Ecully, Ecole centrale de Lyon, 2024. http://www.theses.fr/2024ECDL0011.
Texte intégralIntracranial aneurysms are a critical public health condition linked to the degradation of the cerebral artery wall. There is currently no method for estimating the risk of aneurysm rupture that takes into account the in vivo mechanical properties of the aneurysm wall, which are believed to be essential in the rupture phenomenon. This doctoral work is part of a large-scale project aimed at improving the intervention criteria currently available to practitioners by developing a non-invasive decision-support tool based on the mechanical state of the tissue to assess the probability of rupture. This tool will be based on the definition of a relationship between the shape of the aneurysm observed by clinical imaging and a database containing a set of clinical images from previous studies, associated with the in vivo mechanical properties of the wall and a characterisation of the rupture. To produce this database, an aneurysm wall deformation device was developed as part of the overall project. This doctoral work focuses on (1) the calibration, the optimisation and in vitro testing of this device on phantom arteries and (2) the in vivo application of the device on an animal model of intracranial aneurysm. To do this, a numerical model of the in vitro experiment was implemented and validated against the experimental results by developing an original validation method. This finite element model of fluid-structure interaction was used to understand the uncertainties involved in using the device within the aneurysm and to help for dimensioning the phantom arteries. The best compromise in terms of phantom artery wall thickness and flexibility was identified, taking into account the limitations of the fabrication techniques. In addition, an inverse analysis procedure was developed to estimate the mechanical characteristics of the aneurysm wall in vivo. Its use is based on quantifying the deformation generated by the device and visualised by spectral photon-counting computed tomography, an emerging medical imaging technique whose spatio-temporal resolutions allow controlled stressing of the tissue without increasing the risk of rupture. The mechanical properties identified were consistent with those derived from ex vivo characterisations of similar aneurysms available in the literature. Finally, a first patient-specific criterion for rupture of the aneurysm wall, taking into account the state of stress in vivo in the tissue, was proposed
Larsson, David. « Accuracy Assessment of Shear Wave Elastography for Arterial Applications by Mechanical Testing ». Thesis, KTH, Hållfasthetslära (Avd.), 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-160091.
Texte intégralBerlin, Clara [Verfasser], Alex [Akademischer Betreuer] Frydrychowicz et Franz [Akademischer Betreuer] Hartmann. « Vierdimensionale Fluss-MRT der Arteria pulmonalis : Validierung und Fehlerquantifizierung an einem 3T-Scannermit gesunden Probanden und Phantom / Clara Berlin ; Akademische Betreuer : Alex Frydrychowicz, Franz Hartmann ». Lübeck : Zentrale Hochschulbibliothek Lübeck, 2021. http://d-nb.info/1225892112/34.
Texte intégralKokkalis, Efstratios. « Fluid dynamic assessments of spiral flow induced by vascular grafts ». Thesis, University of Dundee, 2014. https://discovery.dundee.ac.uk/en/studentTheses/5b96492f-983f-4baa-8e48-20da6939e65c.
Texte intégralJanvier, Marie-Ange. « Optimization and validation of a new 3D-US imaging robot to detect, localize and quantify lower limb arterial stenoses ». Thèse, 2010. http://hdl.handle.net/1866/4758.
Texte intégralAtherosclerosis is a disease caused by the accumulation of lipid deposits inducing the remodeling and hardening of the vessel wall, which leads to a progressive narrowing of arteries. These lesions are generally located on the coronary, carotid, aortic, renal, digestive and peripheral arteries. With regards to peripheral vessels, lower limb arteries are frequently affected. The severity of arterial lesions are evaluated by the stenosis degree (reduction > 50.0 % of the lumen diameter) using angiography, magnetic resonance angiography (MRA), computed tomography (CT) and ultrasound (US). However, to plan a surgical therapeutic intervention, a 3D arterial geometric representation is notably preferable. Imaging methods such as MRA and CT are very efficient to generate a three-dimensional imaging of good quality even though their use is expensive and invasive for patients. 3D-ultrasound can be perceived as a promising avenue in imaging for the location and the quantification of stenoses. This non invasive, non allergic (i.e, nephrotoxic contrast agent) and non-radioactive imaging modality offers distinct advantages in convenience, low cost and also multiple diagnostic options to quantify blood flow in Doppler. Since medical robots already have been used with success in surgery and orthopedics, our team has conceived a new medical 3D-US robotic imaging system to localize and quantify arterial stenoses in lower limb vessels. With this new technology, a clinician manually teaches the robotic arm the scanning path. Then, the robotic arm repeats with high precision the taught trajectory and controls simultaneously the ultrasound image acquisition process at even sampling and preserves safely the force applied by the US probe. Consequently, the reconstruction of a lower limb arterial geometry in 3D with this system could allow the location and quantification of stenoses with high accuracy. The objective of this research project consisted in validating and optimizing this 3D-ultrasound imaging robotic system. The reliability of a 3D reconstructed geometry obtained with 2D-US images captured with a robotic system depends considerably on the positioning accuracy and the calibration procedure. Thus, the positioning accuracy of the robotic arm was evaluated in the workspace with a lower limb-mimicking phantom design (article 1 - chapter 3). In addition, a Z-phantom was designed to assure a precise calibration of the robotic system. These optimal methods were used to validate the system for the clinical application and to find the transformation which converts image coordinates of a 2D-ultrasound image into the robotic arm referential. From these results, all objects scanned by the robotic system can be adequately reconstructed in 3D. Multimodal imaging vascular phantoms of lower limb arteries were used to evaluate the accuracy of the 3D representations (article 2 - chapter 4, article 3 - chapter 5). The validation of the reconstructed geometry with this system was performed by comparing surface points with the manufacturing vascular phantom file surface points. The accuracy to localize and quantify stenoses with the 3D-ultrasound robotic imaging system was also determined. These same evaluations were analyzed in vivo to perceive the feasibility of the study.
Merouche, Samir. « Suivi des vaisseaux sanguins en temps réel à partir d’images ultrasonores mode-B et reconstruction 3D : application à la caractérisation des sténoses artérielles ». Thèse, 2013. http://hdl.handle.net/1866/12733.
Texte intégralLocating and quantifying stenosis length and severity are essential for planning adequate treatment of peripheral arterial disease (PAD). To do this, clinicians use imaging methods such as ultrasound (US), Magnetic Resonance Angiography (MRA) and Computed Tomography Angiography (CTA). However, US examination cannot provide maps of entire lower limb arteries in 3D, MRA is expensive and invasive, CTA is ionizing and also invasive. We propose a new 3D-US robotic system with B-mode images, which is non-ionizing, non-invasive, and is able to track and reconstruct in 3D the superficial femoral artery from the iliac down to the popliteal artery, in real time. In vitro, 3D-US reconstruction was evaluated for simple and complex geometries phantoms in comparison with their computer-aided-design (CAD) file in terms of lengths, cross sectional areas and stenosis severity. In addition, for the phantom with a complex geometry, an evaluation was realized using Hausdorff distance, cross-sectional area and stenosis severity in comparison with 3D reconstruction with CTA. A mean Hausdorff distance of 0.97± 0.46 mm was found for 3D-US compared to 3D-CTA vessel representations. In vitro investigation to evaluate stenosis severity when compared with the original phantom CAD file showed that 3D-US reconstruction, with 3%-6% error, is better than 3D-CTA reconstruction, with 4-13% error. The in vivo system’s feasibility to reconstruct a normal femoral artery segment of a volunteer was also investigated. All of these promising results show that our ultrasound robotic system is able to track automatically the vessel and reconstruct it in 3D as well as CTA. Clinically, our system will allow firstly to the radiologist to have 3D images readily interpretable and secondly, to avoid radiation and contrast agent for patients.
Chapitres de livres sur le sujet "Phantom arteries"
Beauman, Glenn J., Johan H. C. Reiber, Gerhard Koning, Ronald C. M. Van Houdt et Robert A. Vogel. « Angiographic core laboratory analyses of arterial phantom images : Comparative evaluations of accuracy and precision ». Dans Developments in Cardiovascular Medicine, 87–104. Dordrecht : Springer Netherlands, 1994. http://dx.doi.org/10.1007/978-94-011-1172-0_6.
Texte intégralPhellan, Renzo, Thomas Lindner, Michael Helle, Alexandre X. Falcão et Nils D. Forkert. « The Effect of Labeling Duration and Temporal Resolution on Arterial Transit Time Estimation Accuracy in 4D ASL MRA Datasets - A Flow Phantom Study ». Dans Machine Learning and Medical Engineering for Cardiovascular Health and Intravascular Imaging and Computer Assisted Stenting, 141–48. Cham : Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-33327-0_17.
Texte intégralActes de conférences sur le sujet "Phantom arteries"
Fabbri, Dario, Quan Long, Saroj Das et Michele Pinelli. « Study of Embolic Particle Migration in Cerebral Arteries by Computational Modelling ». Dans ASME 2012 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/sbc2012-80314.
Texte intégralPazos, Valérie, Jean-Claude Tardif et Rosarie Mongrain. « Gel Based Mechanical Phantom of Stenotic Coronary Artery ». Dans ASME 2007 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2007. http://dx.doi.org/10.1115/sbc2007-175398.
Texte intégralZheng, Yihao, Jingxuan Lyu, Yang Liu, Jason Lo, Ata Susamaz, Hitinder S. Gurm et Albert J. Shih. « Grinding Wheel Motion and Force During Plaque Removal by Rotational Atherectomy in Angulated Coronary Artery ». Dans ASME 2018 13th International Manufacturing Science and Engineering Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/msec2018-6686.
Texte intégralPickens, David R., et J. Michael Fitzpatrick. « Phantom Design To Evaluate A Three-Dimensional Motion Correction Algorithm In DSA Of The Coronary Arteries ». Dans Medical Imaging II, sous la direction de Roger H. Schneider et Samuel J. Dwyer III. SPIE, 1988. http://dx.doi.org/10.1117/12.968703.
Texte intégralSturgeon, Victoria, O¨mer Savas et David Saloner. « An Experimental Study of Transitional Behavior in Physiological Flow Regimes ». Dans ASME 2006 International Mechanical Engineering Congress and Exposition. ASMEDC, 2006. http://dx.doi.org/10.1115/imece2006-13802.
Texte intégralLambert, Jack W., Karen G. Ordovas, Yuxin Sun et Benjamin M. Yeh. « Enhanced diagnostic value for coronary CT angiography of calcified coronary arteries using dual energy and a novel high-Z contrast material : a phantom study ». Dans SPIE Medical Imaging, sous la direction de Despina Kontos, Thomas G. Flohr et Joseph Y. Lo. SPIE, 2016. http://dx.doi.org/10.1117/12.2217165.
Texte intégralKargar, Soudabeh, Loren Bridges et Dawn M. Bardot. « Strategies for Building an Arterial Flow Phantom ». Dans ASME 2011 6th Frontiers in Biomedical Devices Conference. American Society of Mechanical Engineers, 2011. http://dx.doi.org/10.1115/biomed2011-66008.
Texte intégralKato, Mitsuaki, Kenji Hirohata, Akira Kano, Shinya Higashi, Akihiro Goryu, Takuya Hongo, Shigeo Kaminaga et Yasuko Fujisawa. « Fast CT-FFR Analysis Method for the Coronary Artery Based on 4D-CT Image Analysis and Structural and Fluid Analysis ». Dans ASME 2015 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/imece2015-51124.
Texte intégralZhang, Xiaoming, Mostafa Fatemi et James F. Greenleaf. « A New Imaging Method for Arterial Tubes Based on Vibration Measurement ». Dans ASME 2003 International Mechanical Engineering Congress and Exposition. ASMEDC, 2003. http://dx.doi.org/10.1115/imece2003-41395.
Texte intégralBisaillon, Charles-Etienne, Marc L. Dufour et Guy Lamouche. « Durable phantoms of atherosclerotic arteries for optical coherence tomography ». Dans BiOS, sous la direction de Nikiforos Kollias, Bernard Choi, Haishan Zeng, Reza S. Malek, Brian J. Wong, Justus F. R. Ilgner, Kenton W. Gregory et al. SPIE, 2010. http://dx.doi.org/10.1117/12.842403.
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