Abstract #1642

Dynamic contrast-enhanced MRI of the liver: comparison between radial VIBE with k-space weighted image contrast reconstruction (r-VIBE-KWIC) and Golden-angle RAdial Sparse Parallel (GRASP)

Yasunari Fujinaga¹, Akira Yamada¹, Ayumi Ohya¹, Hirokazu Tokoro¹, Takeshi Suzuki¹, Hayato Hayashihara², Aya Shiobara², Yasuo Adachi², Yoshihiro Kitou², Marcel Dominik Nickel³, Terumasa Takemaru⁴, Hirokazu Kawaguchi⁵, and Katsuya Maruyama⁵

¹Department of Radiology, Shinshu University, School of Medicine, Matsumoto, Japan, ²Radiology Division, Shinshu University Hospital, Matsumoto, Japan, ³MR Application Predevelopment, Siemens Healthcare GmbH, Erlangen, Germany, ⁴Department of Application, Siemens Healthcare K. K., Tokyo, Japan, ⁵Diagnostic Imaging Business Area, DI Research & Collaboration Dpt., Siemens Healthcare K. K., Tokyo, Japan

We aimed to evaluate the differences of the DCE-MR images between radial VIBE with k-space weighted image contrast reconstruction (r-VIBE-KWIC) and Golden-angle RAdial Sparse Parallel (GRASP). DCE-MRI using r-VIBE-KWIC and GRASP was performed in 36 and 35 patients, respectively. The most optimal arterial phase image was selected from eight sub-frame images at arterial phase, and factors of image quality in the both two groups were assessed using five-point scales. In GRASP, the median scores for all factors except for one were significantly higher than those in r-VIBE-KWIC. In conclusion, GRASP provided the better DCE-MR images than r-VIBE-KWIC.

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