Title :
Toward Time Resolved Cardiac CT Images with Patient Dose Reduction: Image-based Motion Estimation
Author :
Taguchi, Katsuyuki ; Segars, William P. ; Kudo, Hiroyuki ; Frey, Eric C. ; Fishman, Elliot K. ; Tsui, Benjamin M W
Author_Institution :
Russell H. Morgan Dept. of Radiol. & Radiol. Sci., Johns Hopkins Univ., Baltimore, MD
fDate :
Oct. 29 2006-Nov. 1 2006
Abstract :
Two major problems with the current electrocardiogram-gated cardiac CT imaging technique are a large patient radiation dose and insufficient temporal resolution. Our long-term goal is to develop new time resolved and low dose cardiac CT imaging techniques that consist of image reconstruction algorithms and estimation methods of the time-dependent motion vector field of the heart from the acquired CT data. Toward this goal, we developed a method that estimates the 2D components of the motion vector field from a sequence of cardiac CT images.
Keywords :
biomedical imaging; computerised tomography; electrocardiography; image reconstruction; medical signal processing; motion estimation; phantoms; 2D motion vector field components; cardiac motion vector field; electrocardiogram gated cardiac CT imaging; image based motion estimation; image reconstruction algorithms; low dose cardiac CT imaging; patient radiation dose reduction; temporal resolution; time dependent motion vector field estimation; time resolved cardiac CT images; Biomedical imaging; Computed tomography; Heart; Helium; Image reconstruction; Image resolution; Motion estimation; Motion measurement; Nuclear and plasma sciences; Radiology; Computed tomography; cardiac; motion estimation; temporal resolution;
Conference_Titel :
Nuclear Science Symposium Conference Record, 2006. IEEE
Conference_Location :
San Diego, CA
Print_ISBN :
1-4244-0560-2
Electronic_ISBN :
1095-7863
DOI :
10.1109/NSSMIC.2006.354312
