Abstract #2675
Target volume coronary MRA revisited: Usefulness of non-rigid reregistration of multi-frame 3D MRA acquisitions at 3T
Masaki Ishida 1 , Ryohei Nakayama 1 , Shinichi Takase 1 , Katsuhiro Inoue 1 , Yoshitaka Goto 1 , Yasutaka Ichikawa 1 , Motonori Nagata 1 , Kakuya Kitagawa 1 , and Hajime Sakuma 1
1
Radiology, Mie University Hospital, Tsu,
Mie, Japan
Target-volume coronary MRA can visualize coronary
arteries within a predefined target volume within a
shorter acquisition time compared to whole-heart
coronary MRA. Relatively small SLAB volume of this
approach permits acquisitions of multi-frame 3D data
without prolonging scan duration. Recently, non-rigid
image registration has been emerged as a technique which
can merge images and improve SNR and CNR. Multi-frame 3D
acquisitions and non-rigid image reregistration allow
for acquisition of free-breathing target-volume 3T
coronary MRA covering entire coronary arteries with the
image quality that is superior to the single-frame
acquisition, within a significantly shorter acquisition
time compared to whole-heart coronary MRA.
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