Kosuke Morita1, Masami Yoneyama2, Hiroshi Hamano2, Takeshi Nakaura3, Seitaro Oda3, Akira Sasao3, Hiroyuki Uetani3, Shogo Fukuda3, Masahiro Hatemura3, and Toshinori Hirai3
1Radiology, Kumamoto university, kumamoto-shi, Japan, 2Philips Japan, shinagawa, Japan, 3Kumamoto university, kumamoto-shi, Japan
1Radiology, Kumamoto university, kumamoto-shi, Japan, 2Philips Japan, shinagawa, Japan, 3Kumamoto university, kumamoto-shi, Japan
This is the main reason why MB-SENSE alone
caused image quality degradation due to disadvantages such as decreased SNR and
increased SAR in body DWI. MB-VERSE enabled both improved
image quality and shortened acquisition time for respiratory trigger DWI for
abdomen.
Representative volunteer images. DWI of b
= 800 sec/mm2 images and ADC maps between reference, MB-only and MB+VERSE.
Comparison of VERSE pulse and SINC
pulse. VERSE pulse algorithm is a way to
simultaneously reshape an RF pulse and its slice-select gradient waveform while
maintaining the same excitation profile for on-resonance spins. In short, if
some portion of an RF waveform is stretched in time, a corresponding reduction
in RF amplitude must be made to maintain the same flip angle.