High-resolution time-resolved contrast-enhanced 3D MRA by combining SENSE with keyhole and SLAM strategies.
Sensitivity encoding (SENSE) was combined with keyhole and selective line acquisition mode (SLAM) techniques to acquire a time series of images during contrast passage. The acquisition speed of the dynamic time frames was improved by a factor of 8 in total. The high spatial frequencies were sampled during the steady state and combined with the dynamic time frames to construct a series of high-resolution time-resolved contrast-enhanced 3D images. Filtered temporal correlation analysis was used to separate the arteries and veins.
Wu
Yijing
Y
Department of Medical Physics, University of Wisconsin, Madison, WI 53704, USA. yijingwu@wisc.edu
Goodrich
K Craig
KC
Buswell
Henry R
HR
Katzman
Gregory L
GL
Parker
Dennis L
DL
D002339:Carotid Arteries / Q000033:anatomy & histology*; D003287:Contrast Media / Q000008:administration & dosage*; D005260:Female; D005583:Fourier Analysis; D006801:Humans; D007089:Image Enhancement / Q000379:methods*; D021621:Imaging, Three-Dimensional / Q000379:methods*; D018810:Magnetic Resonance Angiography / Q000379:methods*; D008297:Male; D012016:Reference Values; D012680:Sensitivity and Specificity; D013997:Time Factors; D014680:Veins / Q000033:anatomy & histology*
D003287:Contrast Media