TY - GEN
T1 - Atlas-assisted tomography
T2 - 2006 3rd IEEE International Symposium on Biomedical Imaging: From Nano to Macro
AU - Sadowsky, Ofri
AU - Ramamurthi, Krishnakumar
AU - Ellingsen, Lotta M.
AU - Chintalapani, Gouthami
AU - Prince, Jerry L.
AU - Taylor, Russell H.
PY - 2006/11/17
Y1 - 2006/11/17
N2 - 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.
AB - 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.
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UR - http://www.scopus.com/inward/citedby.url?scp=33750959402&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:33750959402
SN - 0780395778
SN - 9780780395770
T3 - 2006 3rd IEEE International Symposium on Biomedical Imaging: From Nano to Macro - Proceedings
SP - 1244
EP - 1247
BT - 2006 3rd IEEE International Symposium on Biomedical Imaging
Y2 - 6 April 2006 through 9 April 2006
ER -