Abstract #0927
Improving estimation of small-vein susceptibility by using a pre-estimated susceptibility map
Ryota Sato 1 , Toru Shirai 1 , Yo Taniguchi 1 , Takenori Murase 2 , Yoshitaka Bito 2 , and Hisaaki Ochi 1
1
Central Research Laboratory, Hitachi, Ltd.,
Kokubunji, Tokyo, Japan,
2
Hitachi
Medical Corporation, Chiba, Japan
To improve estimation of small-vein susceptibility, a
method is proposed for QSM using a pre-estimated as
additional structural information instead of a magnitude
image and the values in the high-frequency domain in
k-space. The pre-estimated susceptibility map is
calculated without regularization in order to preserve
small-vein contrasts. The effects of using the
pre-estimated susceptibility map as structural
information and high-frequency values in k-space on the
small-vein susceptibility were evaluated in experiments
using healthy volunteer. According to the evaluation
results, underestimation of small-vein susceptibility is
reduced by using the pre-estimated susceptibility map as
structural information and high-frequency values in
k-space.
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