Postprocessing techniques for time-resolved contrast-enhanced MR angiography.
The purpose of this study was to improve dynamic two-dimensional projection magnetic resonance digital subtraction angiography by using remasking and filtering postprocessing techniques. Four methods were evaluated in 50 patients: default mask subtraction, remasked subtraction, filtering based on the SD, and linear filtering. The results demonstrated that postprocessing techniques such as linear filtering can reduce background motion artifacts and improve arterial contrast-to-noise ratio.
Yoo
Stanley K
SK
Department of Radiology MR Research, Weill Medical College of Cornell University, 515 E 71st St, Suite S120, New York, NY 10021. Received March 14, 2001.
Watts
Richard
R
Winchester
Priscilla A
PA
Zabih
Ramin
R
Wang
Yi
Y
Prince
Martin R
MR
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D003287:Contrast Media; D005260:Female; D006801:Humans; D018810:Magnetic Resonance Angiography / Q000379:methods*; D008297:Male; D008875:Middle Aged; D011856:Radiographic Image Enhancement; D013997:Time Factors
D003287:Contrast Media