Modélisation de la cavité pelvienne

Boukerrou, Malik; Rubod, Chrystèle; Coutty, N.; Brieu, Mathias; Dubois, Patrick; Cosson, Michel

doi:10.1007/s11608-007-0111-7

Cited by 8 publications

(2 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This is achievable by accurate preplanned insertion of needles. Considering the limited efforts to model suspended organs with related phantoms [2], our investigation focus is the development of a reliable platform for comparative studies, with the capability of generalization to similar applications -involving intra-abdominal and pelvic floor (PF) organs.…”

Section: Introductionmentioning

confidence: 99%

Experimental platform for intra-uterine needle placement procedures

et al. 2013

View full text Add to dashboard Cite

A framework has been investigated to enable a variety of comparative studies in the context of needle-based gynaecological brachytherapy. Our aim was to create an anthropomorphic phantom-based platform. The three main elements of the platform are the organ model, needle guide, and needle drive. These have been studied and designed to replicate the close environment of brachytherapy treatment for cervical cancer. Key features were created with the help of collaborating interventional radio-oncologists and the observations made in the operating room. A phantom box, representing the uterus model, has been developed considering available surgical analogies and operational limitations, such as organs at risk. A modular phantom-based platform has been designed and prototyped with the capability of providing various boundary conditions for the target organ. By mimicking the female pelvic floor, this framework has been used to compare a variety of needle insertion techniques and configurations for cervical and uterine interventions. The results showed that the proposed methodology is useful for the investigation of quantifiable experiments in the intraabdominal and pelvic regions.

show abstract

Section: Introductionmentioning

confidence: 99%

Experimental platform for intra-uterine needle placement procedures

et al. 2013

View full text Add to dashboard Cite

show abstract

“…Les principaux simulateurs de chirurgie digestive ont été développés pour les organes solides comme le foie et la rate [1,2]. Les simulateurs portant sur les tissus mous, tels que les organes pelviens, sont rares [3][4][5]. L'imagerie en trois dimensions des structures pelviennes a également eu un développement récent.…”

Section: Introductionunclassified

Résultats préliminaires et perspectives de la modélisation dynamique pelvienne patient-spécifique

Pirrò

Bellemare²,

Rahim³

et al. 2009

Pelv Perineol

View full text Add to dashboard Cite

Les simulateurs de chirurgie ont eu un essor récent important. Le but de notre travail était de créer un modèle pelvien spécifique à chaque patient qui servira de base au développement d'un simulateur patient-spécifique. Matériels et méthodes : La reconstruction tridimensionnelle des organes pelviens a été réalisée à partir d'images IRM de 15 patientes sans trouble de la statique pelvi-périnéale. Les organes pelviens étaient segmentés par méthode semiautomatique, puis leur maillage était réalisé. Les paramètres mécaniques et physiques de chaque organe étaient définis. La modélisation des organes pelviens était intégrée au sein d'un modèle de déformation physique. Les contraintes simulant les poussées abdominale et diaphragmatique étaient exercées sur le modèle. Les déformations étaient évaluées en recalant les images de la simulation et les images de l'IRM dynamique. Résultats : La durée d'acquisition des images IRM néces-saires à la modélisation était inférieure à sept minutes. La morphologie des organes pelviens après segmentation était spécifique à chaque acquisition. La modélisation dynamique a été possible dans tous les cas. La concordance entre les images IRM et les images de la modélisation était excellente au repos et satisfaisante lors des efforts de poussée. Les principales variations de volume concernaient la vessie. Conclusion : Ce travail a permis la création d'un modèle spécifique statique et dynamique de pelvis féminin. Il est la base indispensable à l'élaboration d'un simulateur de chirurgie pelvienne. Il pourra être un outil pour la planification du geste chirurgical, en permettant une évaluation fonctionnelle préopératoire de la correction des troubles de la statique pelvienne.Mots clés Modèle dynamique · Simulation patient-spécifique · Troubles de la statique pelvienne · IRM Abstract Significant progress has been made recently in developing surgical simulators. The aim of this work was to create a model of the female pelvic area for each patient, that would then serve as a basis for the development of a patient-specific simulator. Materials and methods: MRI scans were used to make three-dimensional reconstructions of the pelvic organs of 15 patients without pelvic floor disorders. Organ segmentation was performed semi-automatically, providing sets of points for the geometric modelling. From these images, 3D surface meshes of the pelvic viscera and bones were reconstructed. The mechanical and physical parameters of each organ were defined. The model of the pelvic organs was then superimposed on a model of physical deformation. Constraints representing abdominal and diaphragmatic pushes were imposed on the model. The deformations of the model were evaluated by stacking the simulation images and the dynamic MRI images. Results: Acquisition of the images required for segmentation took less than seven minutes. The segmentation results were similar to radiological data. Dynamic modelling of the pelvic organs was performed for the 15 patients. Agreement between the MR imaging and the images of the mod...

show abstract