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

Abstract : 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.
Document type :
Theses
Complete list of metadatas

Cited literature [113 references]  Display  Hide  Download

https://pastel.archives-ouvertes.fr/pastel-00869939
Contributor : Abes Star <>
Submitted on : Friday, October 4, 2013 - 3:09:44 PM
Last modification on : Friday, October 4, 2019 - 1:13:47 AM
Long-term archiving on : Sunday, January 5, 2014 - 6:45:55 AM

File

These_Sergio_QUIJANO.pdf
Version validated by the jury (STAR)

Identifiers

  • HAL Id : pastel-00869939, version 1

Citation

Sergio Quijano. 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. Autre. Ecole nationale supérieure d'arts et métiers - ENSAM, 2013. Français. ⟨NNT : 2013ENAM0032⟩. ⟨pastel-00869939⟩

Share

Metrics

Record views

669

Files downloads

1276