TY  - JOUR
AU  - Blume, M.
AU  - Martinez-Moller, A.
AU  - Keil, A.
AU  - Navab, N.
AU  - Rafecas, M.
PY  - 2010
DA  - 2010//
TI  - Joint Reconstruction of Image and Motion in Gated Positron Emission Tomography
T2  - IEEE Trans. Med. Imaging
JO  - IEEE Transactions on Medical Imaging
SP  - 1892
EP  - 1906
VL  - 29
IS  - 11
PB  - Ieee-Inst Electrical Electronics Engineers Inc
KW  - Gating
KW  - motion compensation
KW  - positron emission tomography (PET)
KW  - reconstruction
AB  - We present a novel intrinsic method for joint reconstruction of both image and motion in positron emission tomography (PET). Intrinsic motion compensation methods exclusively work on the measured data, without any external motion measurements. Most of these methods separate image from motion estimation: They use deformable image registration/optical flow techniques in order to estimate the motion from individually reconstructed gates. Then, the image is estimated based on this motion information. With these methods, a main problem lies in the motion estimation step, which is based on the noisy gated frames. The more noise is present, the more inaccurate the image registration becomes. As we show both visually and quantitatively, joint reconstruction using a simple deformation field motion model can compete with state-of-the-art image registration methods which use robust multilevel B-spline motion models.
SN  - 0278-0062
UR  - https://doi.org/10.1109/TMI.2010.2053212
DO  - 10.1109/TMI.2010.2053212
LA  - English
N1  - ISI:000283941800007
ID  - Blume_etal2010
ER  -