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
Dept. of Diagnostic Imaging and Nuclear
Medicine, Kyoto University Graduate School of Medicine,
Kyoto, Kyoto, Japan,
of Informatics, Kyoto University Graduate School of
Informatics, Kyoto, Kyoto, Japan,
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
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