TY - GEN
T1 - Exact 3D cone-beam reconstruction from projections obtained over a wobble trajectory on a c-arm
AU - Ramamurthi, K.
AU - Prince, J. L.
AU - Strobel, N.
PY - 2004/12/1
Y1 - 2004/12/1
N2 - We propose a source trajectory for cone-beam geometry that satisfies the conditions for exact 3D reconstruction in the largest sphere that remains non-truncated in the field of view of a given source detector combination. The source trajectory is a natural variation of the traditional circular source trajectory and is achieved by modulating the elevation of the source from the equatorial plane. We use a shift variant filtering approach in developing a filtered back-projection algorithm for robust, and computationally efficient volumetric reconstruction. The method is theoretically exact, and we show some results based upon simulation studies using a mathematical phantom.
AB - We propose a source trajectory for cone-beam geometry that satisfies the conditions for exact 3D reconstruction in the largest sphere that remains non-truncated in the field of view of a given source detector combination. The source trajectory is a natural variation of the traditional circular source trajectory and is achieved by modulating the elevation of the source from the equatorial plane. We use a shift variant filtering approach in developing a filtered back-projection algorithm for robust, and computationally efficient volumetric reconstruction. The method is theoretically exact, and we show some results based upon simulation studies using a mathematical phantom.
UR - http://www.scopus.com/inward/record.url?scp=17144381342&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=17144381342&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:17144381342
SN - 0780383885
SN - 9780780383883
T3 - 2004 2nd IEEE International Symposium on Biomedical Imaging: Macro to Nano
SP - 932
EP - 935
BT - 2004 2nd IEEE International Symposium on Biomedical Imaging
T2 - 2004 2nd IEEE International Symposium on Biomedical Imaging: Macro to Nano
Y2 - 15 April 2004 through 18 April 2004
ER -