Relevant bibliographies by topics / Biplanar X-Ray

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  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers

Academic literature on the topic 'Biplanar X-Ray'

Author: Grafiati
Published: 4 June 2021
Last updated: 9 February 2022

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Journal articles on the topic "Biplanar X-Ray"

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Sedrak, Mark, Eric Sabelman, Patrick Pezeshkian, John Duncan, Ivan Bernstein, Diana Bruce, Victor Tse, et al. "Biplanar X-Ray Methods for Stereotactic Intraoperative Localization in Deep Brain Stimulation Surgery." Operative Neurosurgery 19, no. 3 (December 20, 2019): 302–12. http://dx.doi.org/10.1093/ons/opz397.

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Abstract BACKGROUND Efficacy in deep brain stimulation (DBS) is dependent on precise positioning of electrodes within the brain. Intraoperative fluoroscopy, computed tomography (CT), or magnetic resonance imaging are used for stereotactic intraoperative localization (StIL), but the utility of biplanar X-ray has not been evaluated in detail. OBJECTIVE To determine if analysis of orthogonal biplanar X-rays using graphical analysis (GA), ray tracing (RT), and/or perspective projection (PP) can be utilized for StIL. METHODS A review of electrode tip positions comparing postoperative CT to X-ray methods was performed for DBS operations containing orthogonal biplanar X-ray with referential spheres and pins. RESULTS Euclidean (Re) errors for final DBS electrode position on intraoperative X-rays vs postoperative CT using GA, RT, and PP methods averaged 1.58 mm (±0.75), 0.74 mm (±0.45), and 1.07 mm (±0.64), respectively (n = 56). GA was more accurate with a ventriculogram. RT and PP predicted positions that correlated with third ventricular structures on ventriculogram cases. RT was the most stable but required knowledge of the geometric setup. PP was more flexible than RT but required well-distributed reference points. A single case using the O-arm demonstrated Re errors of 0.43 mm and 0.28 mm for RT and PP, respectively. In addition, these techniques could also be used to calculate directional electrode rotation. CONCLUSION GA, RT, and PP can be employed for precise StIL during DBS using orthogonal biplanar X-ray. These methods may be generalized to other stereotactic procedures or instances of biplanar imaging such as angiograms, radiosurgery, or injection therapeutics.
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Vanaclocha-Vanaclocha, Vicente, Francisco Verdú-López, Nieves Sáiz-Sapena, Juan Manuel Herrera, and Marlon Rivera-Paz. "Biplanar x-ray fluoroscopy for sacroiliac joint fusion." Neurosurgical Focus 41, videosuppl1 (July 2016): 1. http://dx.doi.org/10.3171/2016.2.focusvid.1687.

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Chronic pain originating from the sacroiliac joint (SI) can cause severe dysfunction. Although many patients respond to conservative management with NSAIDs, some do need further treatment in the form of SI joint fusion (SIJF). To achieve safe and successful SIJF, intraoperative x-ray fluoroscopy is mandatory to avoid serious damages to nearby vascular and neural structures. Each step of the procedure has to be confirmed by anteroposterior (AP) and lateral projections. With a single-arm x-ray, the arch has to be moved back and forth for the AP and lateral projections, and this lengthens the procedure. To achieve the same results in less time, the authors introduced simultaneous biplanar fluoroscopy with 2 x-ray arches. After the patient is positioned prone with the legs spread apart in the so-called Da Vinci position, one x-ray arch for the lateral projection is placed at a right angle to the patient, and a second x-ray machine is placed with its arch between the legs of the patient. This allows simultaneous AP and lateral x-ray projections and, in the authors' hands, markedly speeds up the procedure. Biplanar fluoroscopy allows excellent AP and lateral projections to be made quickly at any time during the surgical procedure. This is particularly useful in cases of bilateral SI joint fusion if both sides are done at the same time.The video can be found here: https://youtu.be/TX5gz8c765M.
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Rai, V. N., M. Shukla, and H. C. Pant. "An x-ray biplanar photodiode and the x-ray emission from magnetically confined laser produced plasma." Pramana 52, no. 1 (January 1999): 49–65. http://dx.doi.org/10.1007/bf02827601.

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Melhem, Elias, Ayman Assi, Rami El Rachkidi, and Ismat Ghanem. "EOS® biplanar X-ray imaging: concept, developments, benefits, and limitations." Journal of Children's Orthopaedics 10, no. 1 (February 2016): 1–14. http://dx.doi.org/10.1007/s11832-016-0713-0.

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Andellini, Martina, Francesco Faggiano, Roxana di Mauro, Pietro Derrico, and Matteo Ritrovato. "OP45 HTA Of A Pediatric Biplanar Low-Dose X-Ray Imaging System." International Journal of Technology Assessment in Health Care 34, S1 (2018): 17–18. http://dx.doi.org/10.1017/s0266462318000983.

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Introduction:Patients with adolescent idiopathic scoliosis frequently receive X-ray imaging at diagnosis and subsequent follow monitoring. To achieve the ALARA concept of radiation dose, a biplanar low-dose X-ray system (BLDS) has been proposed. The aim of the study is to gather evidence on safety, accuracy and overall effectiveness of a BLDS compared with CT scanning, in a pediatric population, in order to support the final decision on possible acquisition of such innovative diagnostic system.Methods:The new method Decision-oriented HTA (DoHTA) was applied to carefully assess the diagnostic technology. It was developed starting from the EUnetHTA Core Model® integrated with the analytic hierarchy process in order to identify all the relevant assessment aspects of the technology involved, identified from scientific literature, experts’ judgments and specific context analysis of Bambino Gesù Children's Hospital. A weight was associated to each assessment element and the alternatives’ ranking was defined.Results:This innovative system provides orthopedic images in standing or sitting position, being able to examine the spine and lower limbs under normal weight-bearing conditions. This system is recommended for particular clinical indications as scoliosis and other congenital deformities of the spine. It is able to acquire simultaneous posteroanterior and lateral images in a single scan without vertical distortion and with lower radiation exposure than CT scanning. 2D images acquired can be combined to obtain a 3D reconstruction scanning based on a semi-automated statistical model.Conclusions:The major advantages of BLDS are the relatively low dose of radiation and the possibility of obtaining a 3D reconstruction of the bones. Our preliminary results show that data on the clinical effectiveness are limited but the technical advancements of BLDS appear promising in terms of patient management and patient health outcomes associated with its use.
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Armentrout, C. J., J. B. Geddes, Ping Lee, and L. R. Canfield. "UV to soft‐x‐ray surveys using a compact, biplanar diode array." Review of Scientific Instruments 59, no. 8 (August 1988): 1843–45. http://dx.doi.org/10.1063/1.1140077.

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Jahss, Melvin H., Allen I. Troy, and Frederick Kummer. "Roentgenographic and Mathematical Analysis of First Metatarsal Osteotomies for Metatarsus Primus Varus: A Comparative Study." Foot & Ankle 5, no. 6 (June 1985): 280–321. http://dx.doi.org/10.1177/107110078500500602.

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The operative effectiveness of five different first metatarsal osteotomies for nonarthritic hallux valgus and metatarsus primus varus were objectively evaluated roentgenographically. The series consisted of 120 feet (75 patients) seen over a 5-year period. The osteotomies were biplanar neck, Chevron, biplanar basilar, basilar concentric, and basilar concentric combined with a lateral closing wedge. All the osteotomies except for the Chevron had varying degrees of plantar displacement of the distal fragment and crossed Kirschner wire fixation. The operative techniques and failures are discussed. Special x-ray studies confirmed misleading pseudocorrections caused by bandage compression and intraoperative and early postoperative roentgenographic distortion. The Chevron gave the least correction, 2°, and did not permit plantar displacement to obviate late metatarsal transfer lesions. The biplanar neck osteotomies were technically the simplest, giving 86% satisfactory corrections, averaging 4.3°. The biplanar basilar osteotomies yielded the most erratic results. The poor results were due to medial tilt during fixation, thereby negating any correction. The technical difficulties with the basilar concentric osteotomy were overcome by the addition of a small lateral closing wedge. This procedure gave by far the most consistently good results with corrections of up to 12°, averaging 7.9°.
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Amzallag-Bellenger, Elisa, Fabian Uyttenhove, Éric Nectoux, Antoine Moraux, Julien Bigot, Bernard Herbaux, and Nathalie Boutry. "Idiopathic scoliosis in children and adolescents: assessment with a biplanar X-ray device." Insights into Imaging 5, no. 5 (September 13, 2014): 571–83. http://dx.doi.org/10.1007/s13244-014-0354-0.

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Goodbody, Christine, Paz Kedem, Michaela Thompson, Huong T. Do, Douglas N. Mintz, Roger F. Widmann, and Emily R. Dodwell. "Reliability and Reproducibility of Subject Positioning with EOS Low-Dose Biplanar X-ray." HSS Journal ® 13, no. 3 (March 1, 2017): 263–66. http://dx.doi.org/10.1007/s11420-017-9548-6.

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Hatala, Kevin G., David A. Perry, and Stephen M. Gatesy. "A biplanar X-ray approach for studying the 3D dynamics of human track formation." Journal of Human Evolution 121 (August 2018): 104–18. http://dx.doi.org/10.1016/j.jhevol.2018.03.006.

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Dissertations / Theses on the topic "Biplanar X-Ray"

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Namayega, Catherine. "A deep learning algorithm for contour detection in synthetic 2D biplanar X-ray images of the scapula: towards improved 3D reconstruction of the scapula." Master's thesis, University of Cape Town, 2020. http://hdl.handle.net/11427/32542.

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Three-dimensional (3D) reconstruction from X-ray images using statistical shape models (SSM) provides a cost-effective way of increasing the diagnostic utility of two-dimensional (2D) X-ray images, especially in low-resource settings. The landmark-constrained model fitting approach is one way to obtain patient-specific models from a statistical model. This approach requires an accurate selection of corresponding features, usually landmarks, from the bi-planar X-ray images. However, X-ray images are 2D representations of 3D anatomy with super-positioned structures, which confounds this approach. The literature shows that detection and use of contours to locate corresponding landmarks within biplanar X-ray images can address this limitation. The aim of this research project was to train and validate a deep learning algorithm for detection the contour of a scapula in synthetic 2D bi-planar Xray images. Synthetic bi-planar X-ray images were obtained from scapula mesh samples with annotated landmarks generated from a validated SSM obtained from the Division of Biomedical Engineering, University of Cape Town. This was followed by the training of two convolutional neural network models as the first objective of the project; the first model was trained to predict the lateral (LAT) scapula image given the anterior-posterior (AP) image. The second model was trained to predict the AP image given the LAT image. The trained models had an average Dice coefficient value of 0.926 and 0.964 for the predicted LAT and AP images, respectively. However, the trained models did not generalise to the segmented real X-ray images of the scapula. The second objective was to perform landmark-constrained model fitting using the corresponding landmarks embedded in the predicted images. To achieve this objective, the 2D landmark locations were transformed into 3D coordinates using the direct linear transformation. The 3D point localization yielded average errors of (0.35, 0.64, 0.72) mm in the X, Y and Z directions, respectively, and a combined coordinate error of 1.16 mm. The reconstructed landmarks were used to reconstruct meshes that had average surface-to-surface distances of 3.22 mm and 1.72 mm for 3 and 6 landmarks, respectively. The third objective was to reconstruct the scapula mesh using matching points on the scapula contour in the bi-planar images. The average surface-to-surface distances of the reconstructed meshes with 8 matching contour points and 6 corresponding landmarks of the same meshes were 1.40 and 1.91 mm, respectively. In summary, the deep learning models were able to learn the mapping between the bi-planar images of the scapula. Increasing the number of corresponding landmarks from the bi-planar images resulted into better 3D reconstructions. However, obtaining these corresponding landmarks was non-trivial, necessitating the use of matching points selected from the scapulae contours. The results from the latter approach signal a need to explore contour matching methods to obtain more corresponding points in order to improve the scapula 3D reconstruction using landmark-constrained model fitting.
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Lahkar, Bhrigu. "Contribution à la modélisation musculosquelettique personnalisée du membre inférieur par éléments finis." Thesis, Paris, HESAM, 2020. http://www.theses.fr/2020HESAE070.

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Le trouble musculosquelettique du membre inférieur est l'un des fardeaux de santé les plus courants pouvant entraîner une déficience fonctionnelle chez un individu. Bien que diverses options de gestion opérationnelle soient disponibles, il ne semble pas y avoir unanimité sur une procédure particulière qui servirait au mieux les intérêts de tous. Pour évaluer objectivement les troubles et planifier efficacement les interventions chirurgicales, il est essentiel de comprendre la biomécanique des membres inférieurs dans des conditions de charge physiologique. Avec cette motivation, ce travail de thèse vise à développer un cadre complet de modélisation musculosquelettique du membre inférieur basé sur les éléments finis. La première phase du travail de thèse est axée sur le développement et l'évaluation de modèles personnalisés d'éléments finis en flexion passive. De nouvelles approches sont proposées et évaluées pour le développement rapide de modèles axés sur la géométrie et les propriétés des ligaments. Dans la deuxième phase, une nouvelle approche basée sur les éléments finis pour la compensation des artefacts des tissus mous est proposée et évaluée. Cette contribution a permis de compenser efficacement les artefacts des tissus mous dans l'analyse du mouvement en tenant compte de la spécificité du sujet. La troisième phase du travail de thèse est consacrée à l'application clinique, où l'utilité du système radiographique biplan dans l'évaluation de l'alignement des implants de l'arthroplastie totale du genou est brièvement explorée. Dans l'ensemble, ce travail de thèse peut aider à estimer et à comprendre avec précision la biomécanique des membres inférieurs dans des conditions de charge cliniquement pertinentes, et à rapprocher le modèle de la routine clinique
Musculoskeletal disorder of the lower limb is one of the most common health burdens that may lead to functional impairment in an individual. Although various operative management options are available, there seems no unanimity on a particular procedure that serves the best. To objectively assess disorders and effectively plan surgeries, it is essential to understand lower limb biomechanics under physiological loading conditions. With that motivation, this PhD aims to develop a comprehensive finite element based musculoskeletal modeling framework of the lower limb. The first phase of the PhD focuses on the development and evaluation of subject-specific finite element models under passive flexion. Novel approaches are proposed and evaluated for fast model development focusing on geometry and ligament properties. In the second phase, a novel finite element based approach for soft tissue artifact compensation is proposed and evaluated. This contribution allowed to effectively compensate for soft tissue artifact in motion analysis by taking subject specificity into account. The third phase of the PhD is dedicated to clinical application, where the utility of the biplanar X-ray system in evaluating Total Knee Arthroplasty implant alignment is briefly explored. Overall, this PhD may help to accurately estimate and understand lower limb biomechanics under clinically relevant loading conditions, and bring the model a step closer to clinical routine
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Quijano, Sergio. "Contribution à la reconstruction 3D des membres inférieurs reconstruits à partir des radios biplanes pour l’application à la planification et au suivi des chirurgies." Thesis, Paris, ENSAM, 2013. http://www.theses.fr/2013ENAM0032/document.

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Pour comprendre et diagnostiquer les pathologies qui affectent l’organisation spatialede notre squelette, il est essentiel d’aborder ces problématiques en 3D. Le CT-Scan et l’IRMsont des modalités d’imagerie couramment utilisées en milieu clinique pour étudier en 3D notresystème musculosquelettique. La plupart de ces systèmes d’imagerie proposent une acquisitioncouchée sur laquelle les effets gravitaires ne sont pas pris en compte. Le CT-Scan est unemodalité particulièrement irradiante et l’IRM est plus spécifiquement dédiée à l’étude des tissusmous. Le système EOS permet de reconstruire en 3D les os à partir d’une paire deradiographies biplanes à faible dose d’irradiation. En plus, le système EOS propose uneacquisition en position debout, prenant en compte les effets gravitaires. Cette thèse contribue àl’amélioration des méthodes de reconstruction 3D des membres inférieurs à partir des radiosbiplanes. Dans le cadre de thèse on a proposé et évalué : 1) Une méthode de reconstruction3D des membres inférieurs s’appuyant sur des modèles paramétrés et des inférencesstatistiques. 2) Une méthode d’auto-amélioration de la reconstruction 3D des membresinférieurs en utilisant du traitement d’images local et le recalcul d’inférences statistiques. 3)Enfin, des méthodes utilisant des critères de similarité d’images et des critères morphologiquespour détecter de manière automatique le côté médial et latéral du fémur et du tibia. Le but estd’éviter l’inversion par l’opérateur de condyles fémoraux et plateaux tibiaux, affectant la valeurdes paramètres cliniques, surtout les torsions. La méthode de reconstruction proposée dans lecadre de cette thèse est intégrée dans le logiciel sterEOS® et utilisée dans une soixantained’hôpitaux au monde. Les méthodes développées dans le cadre de cette thèse ont permis deprogresser vers la reconstruction semi-automatisée, précise et robuste du membre inférieur
For a better understanding and diagnosis of the pathologies affecting the spatialorganization of our skeleton it is necessary to address them in 3D. CT-Scan and MRI areimaging modalities commonly used to study the musculoskeletal system in 3D. Moreover,patients are recorded in reclining position thus gravity effect can’t be taken into account.Furthermore, CT-Scan exposes patient to high radiation doses and MRI is used mostly tocharacterize soft tissues. With the EOS system, from a pair of low dose biplanar radiographs wecan reconstruct bones in 3D, and the radiographs are recorded in standing position thus gravityeffects are considered. This thesis contributes to the improvement of the 3D reconstructionmethods of lower limbs from biplanar radiographs. In this thesis we have proposed andevaluated: 1) A 3D reconstruction method of the lower limbs based on parametric models andstatistical inferences. 2) A method for the auto-improvement of the 3D reconstruction of thelower limbs. This method combines image processing and the recalculation of the statisticalinferences. 3) Finally, methods based on similarity measures and shape criteria were used todetect automatically the medial and lateral side of the femur and tibia. The aim of thesemethods is to avoid the inversion of the femoral and tibial condyles in biplanar radiographs.These inversions have an impact in the calculation of clinical measurements, particularly thetorsional ones. The reconstruction method proposed in this thesis is already integrated withinthe sterEOS® software, available in 60 hospitals around the world. The methods developed inthis thesis have led us to a semi-automatic, accurate and robust reconstruction of lower limbs
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Nérot, Agathe. "Modélisation géométrique du corps humain (externe et interne) à partir des données externes." Thesis, Lyon, 2016. http://www.theses.fr/2016LYSE1133.

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Les modèles humains numériques sont devenus des outils indispensables à l’étude de la posture est du mouvement dans de nombreux domaines de la biomécanique visant des applications en ergonomie ou pour la clinique. Ces modèles intègrent une représentation géométrique de la surface du corps et un squelette filaire interne composé de segments rigides et d’articulations assurant leur mise en mouvement. La personnalisation des mannequins s'effectue d’abord sur les dimensions anthropométriques externes, servant ensuite de données d’entrée à l’ajustement des longueurs des segments du squelette en interne. Si les données externes sont de plus en plus facilement mesurables à l’aide des outils de scanning 3D actuels, l’enjeu scientifique est de pouvoir prédire des points caractéristiques du squelette en interne à partir de données uniquement externes. L’Institut de Biomécanique Humaine Georges Charpak (Arts et Métiers ParisTech) a développé des méthodes de reconstruction des os et de l’enveloppe externe à partir de radiographies biplanes obtenues avec le système basse dose EOS. En s’appuyant sur cette technologie, ces travaux ont permis de proposer de nouvelles relations statistiques externes-internes pour prédire des points du squelette longitudinal, en particulier l’ensemble des centres articulaires du rachis, à partir d’une base de données de 80 sujets. L'application de ce travail pourrait permettre d’améliorer le réalisme des modèles numériques actuels en vue de mener des analyses biomécaniques, principalement en ergonomie, nécessitant des informations dépendant de la position des articulations comme les mesures d’amplitude de mouvement et de charges articulaires
Digital human models have become instrumental tools in the analysis of posture and motion in many areas of biomechanics, including ergonomics and clinical settings. These models include a geometric representation of the body surface and an internal linkage composed of rigid segments and joints allowing simulation of human movement. The customization of human models first starts with the adjustment of external anthropometric dimensions, which are then used as input data to the adjustment of internal skeletal segments lengths. While the external data points are more readily measurable using current 3D scanning tools, the scientific challenge is to predict the characteristic points of the internal skeleton from external data only. The Institut de Biomécanique Humaine Georges Charpak (Arts et Métiers ParisTech) has developed 3D reconstruction methods of bone and external envelope from biplanar radiographs obtained from the EOS system (EOS Imaging, Paris), a low radiation dose technology. Using this technology, this work allowed proposing new external-internal statistical relationships to predict points of the longitudinal skeleton, particularly the complete set of spine joint centers, from a database of 80 subjects. The implementation of this work could improve the realism of current digital human models used for biomechanical analysis requiring information of joint center location, such as the estimation of range of motion and joint loading
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Montreuil, Julien. "Évaluation tridimensionnelle de la reconstruction du ligament croisé antérieur." Thesis, 2019. http://hdl.handle.net/1866/24714.

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Le ligament croisé antérieur (LCA) demeure un des ligaments du genou le plus souvent blessé. Un mauvais positionnement des tunnels osseux est souvent mis en cause dans les échecs de reconstructions du LCA. Une meilleure compréhension biomécanique du phénomène devient essentielle. Par l’utilisation de l’imagerie biplanaire stéréoradiographique à faible irradiation EOS , notre groupe a développé une méthode de reconstruction 3D permettant une description morphologique osseuse remarquable. Par l’entremise de ce système, un référentiel permet d’évaluer, de manière automatisée, précise et reproductible, le positionnement tridimensionnel des tunnels osseux. Notre groupe souhaite partager ce référentiel afin d’assister les chirurgiens orthopédistes à restaurer une biomécanique optimale dans les reconstructions du LCA.
The anterior cruciate ligament (ACL) remains one of the most injured ligament of the knee. Mispositioning the tunnels remains a common cause of ACL reconstruction failure. A better biomechanical description of this phenomenon is therefore essential. Using the low irradiation biplanar stereoradiographic EOStm imaging system, our group developed a 3D reconstruction method allowing a precise morphologic description of the knee. With this system, the tridimensional positioning of the femoral tunnel can be evaluated in a novel, computerized, precise and reproducible coordinate system. With this referential, our group wish to assist orthopedic surgeons in the restoration of optimal biomechanics in ACL reconstructions.
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Book chapters on the topic "Biplanar X-Ray"

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Yang, Zixin, Wafa Skalli, Claudio Vergari, Elsa D. Angelini, and Laurent Gajny. "Automated Spinal Midline Delineation on Biplanar X-Rays Using Mask R-CNN." In VipIMAGE 2019, 307–16. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-32040-9_32.

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Bao, Y., H. Oswald, A. Wahle, and E. Fleck. "Epipolar Relation to 3D Reconstruction of Coronary Arteries from Biplane X-Ray Angiograms." In Computer Assisted Radiology / Computergestützte Radiologie, 858. Berlin, Heidelberg: Springer Berlin Heidelberg, 1991. http://dx.doi.org/10.1007/978-3-662-00807-2_171.

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Wollschläger, Helmut, Andreas M. Zeiher, Peter Lee, Ulrich Solzbach, Tassilo Bonzel, and Hanjörg Just. "Computed Triple Orthogonal Projections for Optimal Radiological Imaging with Biplane Isocentric Multidirectional X-ray Systems." In Developments in Cardiovascular Medicine, 119–25. Dordrecht: Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-009-1331-8_12.

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Schenderlein, Marcel, Volker Rasche, and Klaus Dietmayer. "Three-Dimensional Catheter Tip Tracking from Asynchronous Biplane X-Ray Image Sequences using Non-Linear State Filtering." In Bildverarbeitung für die Medizin 2011, 234–38. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-19335-4_49.

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Renganathan, Gunarajulu, Navin Manaswi, Ionuţ Ghionea, and Sasa Cukovic. "Automatic Vertebrae Localization and Spine Centerline Extraction in Radiographs of Patients with Adolescent Idiopathic Scoliosis." In Studies in Health Technology and Informatics. IOS Press, 2021. http://dx.doi.org/10.3233/shti210166.

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Adolescent Idiopathic Scoliosis (AIS) is lifetime disorder indicated by the abnormal spinal curvature, and it is usually detected in children and adolescents. Traditional radiographic assessment of scoliosis is time-consuming and unreliable due to high variability in images and manual interpretation. Vertebrae localization and centerline extraction from a biplanar X-ray is essential for pathological diagnosis, treatment planning, and decision making. The aim of this paper is to develop a fully automated framework to provide correct evaluation of anatomical landmarks and to extract vertebral and intervertebral discs’ centroids. By knowing coordinates of each centroid, developed framework will estimate 2D deformity curve (centerline) called Middle Spinal Alignment (MSA) in frontal plane. By analyzing the MSA lines and deformity segments, many deformity parameters can be calculated which include vertebral transpositions, Cobb angles, apex vertebra position, etc., for planning spinal correction strategies and monitoring.
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Knott, P., and XC Liu. "Eliminating 2D spinal assessments and embracing 3D and 4D: clinical application of surface topography." In Studies in Health Technology and Informatics. IOS Press, 2021. http://dx.doi.org/10.3233/shti210439.

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The Adams Forward Bend Test recognizes the rotational aspect of the curve with the spine in flexion, and the AP X-ray measures the coronal plane deviation by using the Cobb Angle. However, modern techniques including CT-scan, biplanar radiograph, ultrasound, and surface topography allow the clinician to better evaluate and visualize the true 3-D nature of the spine. Surface Topography imaging uses the surface of the trunk to estimate the spine position using a mathematical algorithm that has been found to be accurate when compared to the radiologic Cobb Angle. The sagittal balance of the spine measured by surface topography is compared in three different situations, namely, “standing up straight,” “standing relaxed,” and “walking,” which will help to best assess posture and risk of proximal junctional kyphosis before and after the treatment. Coronal imbalance (lateral deviation) and a range of maximal vertebral surface rotation (amplitude in either direction) are considered as the parameters with an excellent to good reproducibility. COP displacement or symmetry from the midline is used to measure the stability of the trunk. Therefore, those selected spine shape parameters and COP deviation would be considered as the best descriptors in the assessment of postural sway and outcome of PSSE in children with AIS.
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Conference papers on the topic "Biplanar X-Ray"

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Hardy, Warren N., Craig D. Foster, Matthew J. Mason, King H. Yang, Albert I. King, and Scott Tashman. "Investigation of Head Injury Mechanisms Using Neutral Density Technology and High-Speed Biplanar X-ray." In STAPP Car Crash Conference. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2001. http://dx.doi.org/10.4271/2001-22-0016.

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Boussaid, Haithem, Samuel Kadoury, Iasonas Kokkinos, Jean-Yves Lazennec, Guoyan Zheng, and Nikos Paragios. "3D Model-based Reconstruction of the Proximal Femur from Low-dose Biplanar X-Ray Images." In British Machine Vision Conference 2011. British Machine Vision Association, 2011. http://dx.doi.org/10.5244/c.25.35.

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Swoboda, R., M. Carpella, C. Steinwender, C. Gabriel, F. Leisch, and W. Backfrieder. "From 2D to 4D in quantitative left ventricle wall motion analysis of biplanar X-ray angiograms." In Computers in Cardiology, 2005. IEEE, 2005. http://dx.doi.org/10.1109/cic.2005.1588272.

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Zheng, Guoyan. "Reconstruction of Patient-Specific 3D Bone Model from Biplanar X-Ray Images and Point Distribution Models." In 2006 International Conference on Image Processing. IEEE, 2006. http://dx.doi.org/10.1109/icip.2006.312539.

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Agomma, Roseline Olory, Carlos Vazquez, Thierry Cresson, and Jacques de Guise. "Detection And Identification Of Lower-Limb Bones In Biplanar X-RAY Images With Arbitrary Field Of View And Various Patient Orientations." In 2019 IEEE 16th International Symposium on Biomedical Imaging (ISBI). IEEE, 2019. http://dx.doi.org/10.1109/isbi.2019.8759456.

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Yates, Keegan, Elizabeth Fievisohn, Warren Hardy, and Costin Untaroiu. "Development and Validation of a Göttingen Miniature Pig Brain Finite Element Model." In ASME 2016 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/detc2016-60217.

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The Center for Disease Control and Prevention reports that there are approximately 1.4 million emergency department visits, hospitalizations, or deaths per year in the USA due to traumatic brain injuries (TBI) [1]. In order to lessen the severity or prevent TBIs, accurate dummy models, simulations, and injury risk metrics must be used. Ideally, these models and metrics would be designed with the use of human data. However, available human data is sparse, so animal study data must be applied to the human brain. Animal data must be scaled before it can be applied, and current scaling methods are very simplified. The objective of our study was to develop a finite element (FE) model of a Göttingen mini-pig to allow study of the tissue level response under impact loading. A hexahedral FE model of a miniature pig brain was created from MRI images. The cerebrum, cerebellum, corpus callosum, midbrain, brainstem, and ventricles were modeled and assigned properties as a Kelvin-Maxwell viscoelastic material. To validate the model, tests were conducted using mini-pigs in an injury device that subjected the pig brain to both linear and angular motion. These pigs are commonly used for brain testing because the brains are well developed with folds and the material properties are similar to human brain. The pigs’ brains were embedded with neutral density radio-opaque markers to track the motion of the brain relative to the skull with a biplanar X-ray system. The impact was then simulated, and the motion of nodes closest to the marker locations was recorded and used to optimize material parameters and the skull-brain interface. The injuries were defined at a tissue level with damage measures such as cumulative strain damage measure (CSDM). In future the animal FE model could be used with a human FE model to determine an accurate animal-to-human transfer function.
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Bey, Michael J., Stephanie K. Brock, Andrew R. Baker, and Kathleen A. Derwin. "Longitudinal Measurement of In-Vivo Tendon Function Over 17 Weeks Following Repair: Technique and Preliminary Results in a Canine Rotator Cuff Model." In ASME 2007 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2007. http://dx.doi.org/10.1115/sbc2007-176378.

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Rotator cuff tears are a common injury, affecting 30–40% of the population over age 60 and representing a tremendous source of pain and disability. Rotator cuff tears are often repaired surgically, but a significant percentage (perhaps 50% or more) of large cuff tears fail after surgery and result in long-term shoulder disability. The outcome of rotator cuff repair surgery is typically assessed by measuring muscle strength, joint range of motion, pain, and other subjective indicators of function. Although these types of measurements are used extensively, they provide only an indirect assessment of tendon function. We have recently developed new experimental techniques that allow us to use a biplane x-ray system to directly assess in-vivo tendon function. The purpose of this study was to assess the feasibility of using a biplane x-ray system to quantify changes in in-vivo tendon function following tendon repair in a canine rotator cuff model. We hypothesized that tendon function will improve over the healing period (as reflected by changes in measures of repair stiffness and contracture) and approach normal tendon function by 17 weeks.
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Kaeppler, Sebastian, Wen Wu, Terrence Chen, Martin Koch, Atilla P. Kiraly, Norbert Strobel, and Joachim Hornegger. "Semi-automatic catheter model generation using biplane x-ray images." In 2013 IEEE 10th International Symposium on Biomedical Imaging (ISBI 2013). IEEE, 2013. http://dx.doi.org/10.1109/isbi.2013.6556799.

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Ying, Xingde, Heng Guo, Kai Ma, Jian Wu, Zhengxin Weng, and Yefeng Zheng. "X2CT-GAN: Reconstructing CT From Biplanar X-Rays With Generative Adversarial Networks." In 2019 IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR). IEEE, 2019. http://dx.doi.org/10.1109/cvpr.2019.01087.

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McNeil, Elizabeth, Amy Hermundstad, Pamela VandeVord, and Warren Hardy. "High-Speed Biplane X-Ray Head Impact Experiments in the Göttingen Minipig." In 62nd Stapp Car Crash Conference. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2018. http://dx.doi.org/10.4271/sc18-22-0001.

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