Abstract #4508
High-resolutional visualization of the lenticulostriate artery: Application of compressed sensing for faster acquisition
Tomohisa Okada 1 , Koji Fujimoto 1 , Yasutaka Fushimi 1 , Akira Yamamoto 1 , Kei Sano 2 , Toshiyuki Tanaka 2 , Naotaka Sakashita 3 , and Kaori Togashi 1
1
Dept. of Diagnostic Imaging and Nuclear
Medicine, Kyoto University Graduate School of Medicine,
Kyoto, Kyoto, Japan,
2
Department
of Informatics, Kyoto University Graduate School of
Informatics, Kyoto, Kyoto, Japan,
3
Toshiba
Medical Systems, Otawara, Tochigi, Japan
Visualization of the lenticulostriate artery (LSA) using
TOF-MRA requires high resolution and takes long
acquisition time, which might be mitigated by
under-sampling and compressed sensing (CS)
reconstruction. However, application of CS to small
structures such as LSA is yet to be investigated.
CS-reconstructed images of 25, 50 and 75% data were
compared with the full-sampled images in 11 volunteers.
Under-sampling of 75% data was comparable to the
control, but visualization was impaired at 50% and 25%.
Higher contrast between LSA and background, as well as
improved CS reconstruction, would be required for LSA
visualization.
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