Real-time interactive coronary MRA.
An interactive real-time imaging system capable of rapid coronary artery imaging is described. High-resolution spiral and circular echo planar trajectories were used to achieve 0.8 x 1.6 mm2 resolution in 135 ms (CEPI) or 1.13 x 1.13 mm2 resolution in 189 ms (spirals), over a 20-cm FOV. Using a sliding window reconstruction, display rates of up to 37 images/sec were achieved. Initial results indicate this technique can perform as a high-quality 2D coronary localizer and with SNR improvement may enable rapid screening of the coronary tree.
Nayak
K S
KS
Magnetic Resonance Systems Research Laboratory, Department of Electrical Engineering, Stanford University, Stanford, California 94305-9510, USA. nayak@mrsrl.stanford.edu
Pauly
J M
JM
Yang
P C
PC
Hu
B S
BS
Meyer
C H
CH
Nishimura
D G
DG
D019034:CD-I; D003327:Coronary Disease / Q000175:diagnosis; D017352:Echo-Planar Imaging / Q000295:instrumentation*; D006801:Humans; D007089:Image Enhancement / Q000295:instrumentation*; D007091:Image Processing, Computer-Assisted / Q000295:instrumentation*; D018810:Magnetic Resonance Angiography / Q000295:instrumentation*; D012016:Reference Values; D012680:Sensitivity and Specificity