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ISBI
2006
IEEE

Atlas-assisted tomography: registration of a deformable atlas to compensate for limited-angle cone-beam trajectory

14 years 12 months ago
Atlas-assisted tomography: registration of a deformable atlas to compensate for limited-angle cone-beam trajectory
We present a method to improve the quality of cone-beam tomographic images computed from an intra-operative C-arm scan by adding information from an anatomical atlas. Limited range of C-arm view angles leads to reconstruction artifacts and poor anatomical detail. We propose to complete the missing views with simulated projections of a statistical anatomical model, which is deformably registered to match the data in the C-arm images. This paper presents the methods used to create the atlas and to register it with x-ray images. We compare the results of seven leave-one-out simulated hybrid reconstruction tests on a population of 13 subjects, with "ground-truth" CT, a classical short-scan, and a partial-scan reconstruction.
Ofri Sadowsky, Krishnakumar Ramamurthi, Lotta Mari
Added 20 Nov 2009
Updated 20 Nov 2009
Type Conference
Year 2006
Where ISBI
Authors Ofri Sadowsky, Krishnakumar Ramamurthi, Lotta Maria Ellingsen, Gouthami Chintalapani, Jerry L. Prince, Russell H. Taylor
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