Abstract #3982

Modified reduced FOV diffusion-weighted MRI using tilted 2D RF excitation pulses in patients with pancreatic ductal adenocarcinoma

Masahiro Tanabe¹, Mayumi Higashi², Keiko Hideura², Kenichiro Ihara², Thomas Benkert³, Hiroshi Imai⁴, Masatoshi Yamane⁵, Takahiro Yamaguchi⁶, Atsuo Inoue², and Katsuyoshi Ito²

¹Department of Radiology, Yamaguchi University Graduate School of Medicine, Ube, Japan, ²Radiology, Yamaguchi University Graduate School of Medicine, Ube, Japan, ³MR Application Predevelopment, Siemens Healthcare GmbH, Erlangen, Germany, ⁴MR Research and Collaboration, Siemens Healthcare K.K., Tokyo, Japan, ⁵Department of Radiological Technology, Yamaguchi University Hospital, Ube, Japan, ⁶Yamaguchi University Hospital, Ube, Japan

Synopsis

Keywords: Pancreas, Diffusion/other diffusion imaging techniquesThis study evaluated the image quality of modified reduced field-of-view (FOV) DWI using 2D spatially-selective RF pulses with tilted excitation plane (tilted r-DWI) for pancreatic ductal adenocarcinomas (PDACs) compared with conventional full-FOV DWI (f-DWI). Two radiologists evaluated the MR image quality, and SNR, CNR, and ADC values of the pancreatic lesions were quantitatively assessed. Image quality scores and CNR of tilted r-DWI were significantly higher than that of f-DWI. The ADC values of PDACs showed no significant deference between them. Tilted r-DWI provides better image quality with less artifacts and higher pancreatic lesion conspicuity than f-DWI.

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