TY - JOUR
T1 - Time-Resolved interventional cardiac C-arm cone-beam ct
T2 - An application of the piccs algorithm
AU - Chen, Guang Hong
AU - Thériault-Lauzier, Pascal
AU - Tang, Jie
AU - Nett, Brian
AU - Leng, Shuai
AU - Zambelli, Joseph
AU - Qi, Zhihua
AU - Bevins, Nicholas
AU - Raval, Amish
AU - Reeder, Scott
AU - Rowley, Howard
N1 - Funding Information:
Manuscript received August 23, 2011; revised October 10, 2011; accepted October 13, 2011. Date of publication October 20, 2011; date of current version April 04, 2012. The work was partially supported by National Institutes of Health through R01 EB009699 and a doctoral scholarship from NSERC-CRSNG (P.T.L.). Asterisk indicates corresponding author. *G.-H. Chen is with the Department of Medical Physics, Radiology, Human Oncology, University of Wisconsin-Madison, Madison, WI 53792 USA (e-mail: gchen7@wisc.edu).
PY - 2012/4
Y1 - 2012/4
N2 - Time-resolved cardiac imaging is particularly interesting in the interventional setting since it would provide both image guidance for accurate procedural planning and cardiac functional evaluations directly in the operating room. Imaging the heart in vivo using a slowly rotating C-arm system is extremely challenging due to the limitations of the data acquisition system and the high temporal resolution required to avoid motion artifacts. In this paper, a data acquisition scheme and an image reconstruction method are proposed to achieve time-resolved cardiac cone-beam computed tomography imaging with isotropic spatial resolution and high temporal resolution using a slowly rotating C-arm system. The data are acquired within 14 s using a single gantry rotation with a short scan angular range. The enabling image reconstruction method is the prior image constrained compressed sensing (PICCS) algorithm. The prior image is reconstructed from data acquired over all cardiac phases. Each cardiac phase is then reconstructed from the retrospectively gated cardiac data using the PICCS algorithm. To validate the method, several studies were performed. Both numerical simulations using a hybrid motion phantom with static background anatomy as well as physical phantom studies have been used to demonstrate that the proposed method enables accurate reconstruction of image objects with a high isotropic spatial resolution. A canine animal model scanned in vivo was used to further validate the method.
AB - Time-resolved cardiac imaging is particularly interesting in the interventional setting since it would provide both image guidance for accurate procedural planning and cardiac functional evaluations directly in the operating room. Imaging the heart in vivo using a slowly rotating C-arm system is extremely challenging due to the limitations of the data acquisition system and the high temporal resolution required to avoid motion artifacts. In this paper, a data acquisition scheme and an image reconstruction method are proposed to achieve time-resolved cardiac cone-beam computed tomography imaging with isotropic spatial resolution and high temporal resolution using a slowly rotating C-arm system. The data are acquired within 14 s using a single gantry rotation with a short scan angular range. The enabling image reconstruction method is the prior image constrained compressed sensing (PICCS) algorithm. The prior image is reconstructed from data acquired over all cardiac phases. Each cardiac phase is then reconstructed from the retrospectively gated cardiac data using the PICCS algorithm. To validate the method, several studies were performed. Both numerical simulations using a hybrid motion phantom with static background anatomy as well as physical phantom studies have been used to demonstrate that the proposed method enables accurate reconstruction of image objects with a high isotropic spatial resolution. A canine animal model scanned in vivo was used to further validate the method.
KW - Cardiac cone-beam CT
KW - compressed sensing
KW - high temporal resolution
KW - interventional imaging
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U2 - 10.1109/TMI.2011.2172951
DO - 10.1109/TMI.2011.2172951
M3 - Article
C2 - 22027367
AN - SCOPUS:84859757301
SN - 0278-0062
VL - 31
SP - 907
EP - 923
JO - IEEE transactions on medical imaging
JF - IEEE transactions on medical imaging
IS - 4
M1 - 6056564
ER -