DocumentCode :
3326953
Title :
Cardiac-motion correction for helical CT
Author :
Isola, Alfonso A. ; Van Stevendaal, Udo ; Schaefer, Dirk ; Niessen, Wiro J. ; Grass, Michael
Author_Institution :
Philips Res. Eur. - Hamburg, Hamburg, Germany
fYear :
2009
fDate :
Oct. 24 2009-Nov. 1 2009
Firstpage :
3247
Lastpage :
3250
Abstract :
The motion of the heart is a major challenge for cardiac imaging using computed tomography. An approach to decrease motion blur and to improve the signal-to-noise ratio is motion-corrected reconstruction which takes motion-vector fields into account in order to compensate motion. In this paper, the determination of a motion-vector field is described in a cardiac region-of-interest using elastic image registration while the reconstruction algorithm remains the same. The method can be applied to high contrast objects moving with the heart, such as vessels filled with contrast agent, calcified plaques or devices like stents.
Keywords :
cardiology; computerised tomography; image reconstruction; image registration; image restoration; medical image processing; motion compensation; calcified plaques; cardiac region-of-interest; cardiac-motion correction; contrast agent; elastic image registration; heart; helical CT; motion blur; motion compensation; motion-corrected reconstruction; motion-vector field; reconstruction algorithm; signal-to-noise ratio; stents; vessels; Biomedical imaging; Computed tomography; Heart; Image analysis; Image reconstruction; Image registration; Interpolation; Motion analysis; Motion estimation; Stochastic processes; cardiac imaging; computed tomography (CT); dynamic CT; image registration; motion compensation;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Nuclear Science Symposium Conference Record (NSS/MIC), 2009 IEEE
Conference_Location :
Orlando, FL
ISSN :
1095-7863
Print_ISBN :
978-1-4244-3961-4
Electronic_ISBN :
1095-7863
Type :
conf
DOI :
10.1109/NSSMIC.2009.5401719
Filename :
5401719
Link To Document :
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