Title :
Bandpass optical flow for tagged MR imaging
Author :
Gupta, Sandeep N. ; Prince, Jerry L. ; Androutsellis-Theotokis, Stephanos
Abstract :
MR tagging has shown great promise for detailed noninvasive cardiac motion imaging. We consider the use of low-frequency tags coupled with gradient-based optical flow estimation to compute cardiac motion. A multiple constraint optical flow method for tagged MRI is formulated by exploiting the Fourier content of the tagged images. The method is validated on simulated tagged data
Keywords :
Fourier analysis; biomedical NMR; cardiology; diagnostic radiography; filtering theory; image sequences; medical image processing; motion estimation; patient diagnosis; Fourier content; MRI; bandpass optical flow; gradient-based optical flow estimation; low-frequency tags; multiple constraint optical flow method; noninvasive cardiac motion imaging; simulated tagged data; tagged MR imaging; Brightness; Equations; Frequency; Image motion analysis; Magnetic resonance imaging; Motion estimation; Optical coupling; Optical imaging; Pixel; Tagging;
Conference_Titel :
Image Processing, 1997. Proceedings., International Conference on
Conference_Location :
Santa Barbara, CA
Print_ISBN :
0-8186-8183-7
DOI :
10.1109/ICIP.1997.632119
