Statistical model registration for a C-arm CT system

Fleute, Markus; Desbat, Laurent; Martin, Ronald A.; Lavallée, Stéphane; Defrise, Michel; Liu, X.; Taylor, Richard

doi:10.1109/nssmic.2001.1008661

Cited by 3 publications

(2 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This technique takes into account the calibration of the tools, the dynamic characteristics of the joints, mechanical center of the knee and ankle joint and anatomical points digitized by the surgeon (''point based solution''). We have added the ''Bone Morphing '' technique which is based on the use of a statistical model of the hip [5,6]. In the real world (patient) the computer automatically computes the points digitized on the articular surface of the femoral head, and the registration is then performed between intraoperative data and the deformable statistical model.…”

Section: Rationalementioning

confidence: 99%

Computer assisted hip surgery by using modular-neck femoral component: principles, technique, advantages and limits

Merloz

2008

Interact Surg

View full text Add to dashboard Cite

The author describes the use of a CT-free navigation system equipped with a software, specifically designed to improve the implantation of a modular-neck anatomic cementless stem and acetabular cup for Total Hip Replacement (THR). When comparing the anatomic parameters measured intraoperatively with the native hip and the prosthetic hip, it appears that the use of the modular-neck allows a better approximation of the native hip lateralization and cranio-podal lowering. Cost and additional time might very well be compensated by the significant outlier reduction. For other technologies (CT-based, Imageless, and virtual fluoroscopy), the average operative time is 20-30 min longer (on the average) as compared to conventional procedure. The image-free systems are not able to navigate dysplastic and revision cases. The CT-based navigation systems are more accurate than imageless navigation for the insertion of the acetabular component in THR, but necessitate preoperative CT-image acquisition. Virtual fluoroscopy is able to navigate hips where CT or CT less images are poor (as in revision THR) and in cases of previous hip fusion (where routine CT registration or point-clouds methods are not possible). Virtual fluoroscopy does not necessitate preoperative CT and planning, but the system has the disadvantage that the procedure is disrupted by the use of fluoroscopy during surgery. Patients with dysplastic hips, especially when osteotomies of the proximal part of the femur have been performed, have significant improvement in function with the use of custom made THR.

show abstract

Section: Rationalementioning

confidence: 99%

Computer assisted hip surgery by using modular-neck femoral component: principles, technique, advantages and limits

Merloz

2008

Interact Surg

View full text Add to dashboard Cite

show abstract

“…Our work presents an extension to [2] and [3] and [4]. The approach presented in this paper allows to use 3D data ( [2]) and 2D data ( [3]) simultaneously to reconstruct anatomical surfaces: The idea for the automatic shape extraction method has been presented in [4] but no matching results with real data were provided.…”

Section: Q4 Specify If This Paper Presents An Extension Of or Close mentioning

confidence: 99%

Integrated Approach for Matching Statistical Shape Models with Intra-operative 2D and 3D Data

Fleute¹,

Lavallée²,

Desbat

2002

Medical Image Computing and Computer-Assisted Intervention — MICCAI 2002

Self Cite

View full text Add to dashboard Cite

This paper presents an approach to the problem of intraoperative reconstruction of 3D anatomical surfaces. The method is based on the integration of intra-operatively available shape and image data of different dimensionality such as 3D scattered point data, 2.5D ultra sound data, X-ray images etc. by matching them to a statistical shape model, thus providing the surgeon with a complete surface representation of the object of interest. Previous papers of the authors describe the matching of either 3D or 2D data to a statistical model and clinical applications. The here presented work combines former published ideas with a new approach for the complex task of shape analysis required for the computation of the statistical model, thus providing a generic approach for intra-operative surface reconstruction based on statistical models. The method for shape extraction/analysis is based on a generic model of the object and is used to segment training shapes and to establish point to point correspondence simultaneously in a set of CT images. Reconstruction experiments are performed on a statistical model of lumbar vertebrae. Results are provided for 3D/3D, 2D/3D and hybrid matching with simulated data and for 3D/2D matching for a cadaveric spine.

show abstract

Chirurgie computérisée de la fixation des vis pédiculaires. Techniques et pratique clinique

Merloz

Tonetti

Vouaillat

et al. 2005

EMC - Rhumatologie-Orthopédie

View full text Add to dashboard Cite

Statistical model registration for a C-arm CT system

Cited by 3 publications

References 9 publications

Computer assisted hip surgery by using modular-neck femoral component: principles, technique, advantages and limits

Computer assisted hip surgery by using modular-neck femoral component: principles, technique, advantages and limits

Integrated Approach for Matching Statistical Shape Models with Intra-operative 2D and 3D Data

Chirurgie computérisée de la fixation des vis pédiculaires. Techniques et pratique clinique

Contact Info

Product

Resources

About