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1428 IEEE TRANSACTIONS ON MEDICAL IMAGING, VOL. 24, NO. 11, NOVEMBER 2005 A System for Real-Time XMR Guided
 

Summary: 1428 IEEE TRANSACTIONS ON MEDICAL IMAGING, VOL. 24, NO. 11, NOVEMBER 2005
A System for Real-Time XMR Guided
Cardiovascular Intervention
Kawal S. Rhode, Maxime Sermesant, David Brogan, Sanjeet Hegde, John Hipwell, Pier Lambiase, Eric Rosenthal,
Clifford Bucknall, Shakeel A. Qureshi, Jaswinder S. Gill, Reza Razavi, and Derek L. G. Hill*
Abstract--The hybrid magnetic resonance (MR)/X-ray suite
(XMR) is a recently introduced imaging solution that provides
new possibilities for guidance of cardiovascular catheterization
procedures. We have previously described and validated a tech-
nique based on optical tracking to register MR and X-ray images
obtained from the sliding table XMR configuration. The aim of
our recent work was to extend our technique by providing an
improved calibration stage, real-time guidance during cardiovas-
cular catheterization procedures, and further off-line analysis
for mapping cardiac electrical data to patient anatomy. Specially
designed optical trackers and a dedicated calibration object have
resulted in a single calibration step that can be efficiently checked
and updated before each procedure. An X-ray distortion model
has been implemented that allows for distortion correction for
arbitrary c-arm orientations. During procedures, the guidance

  

Source: Ayache, Nicholas - INRIA

 

Collections: Computer Technologies and Information Sciences; Engineering