Abstract #2955

Comparison of Three Different DiffusionWeighted Imaging Acquisitions for Focal Liver Lesions

Zhuo Shi¹, Xinming Zhao¹, Ouyang Han¹, and Lizhi Xie²

¹Department Of Imaging Diagnosis,Cancer Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing China, Beijing, China, People's Republic of, ²GE Healthcare, MR Research China, Beijing, Beijing, China, People's Republic of

By comparing the breath-hold, respiratory-triggered, and free-breathing techniques in diffusion-weighted magnetic resonance imaging (MRI) for the evaluation of focal liver lesions on a 3.0T system, we found that: The free-breathing DWI is better than others for the patients who want to do the whole liver examination; but for the patients with focal liver lesions who need to do the DWI scan to evaluate the local lesions, the breath-hold DWI was optimal. Generally speaking, the respiratory-triggered DWI of the 3T MRI system had higher SNR and CNR in any case, and it was the best DWI acquisition technique.

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