Effects of Contrast Agents on Diffusion-Weighted Imaging and T2-Weighted Imaging for diagnosis of Breast tumor
Changxiang Wang1, Yongsheng Ao2, Lihua Qiu2, Lan Mu3, Junhui Huang1, Shuheng Zhang4, Shimin Yang4, Xin Liu1, Hairong Zheng1, and Na Zhang1
1Paul C. Lauterbur Research Center for Biomedical Imaging, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China, 2Department of Radiology, The Second People’s Hospital of Yibin, Yibin, China, 3Department of Radiology,Pidu District People's Hospital, Chengdu, China, 4United Imaging Healthcare, Shanghai, China
Diffusion-Weighted Imaging (DWI) and T2-weighted imaging (T2WI) are two necessary sequences in breast MRI which of great significance for breast cancer. They are usually performed before contrast agent injection in the conventional breast MRI protocol. Recently, some studies have proposed simplified and fast breast scanning protocol, of which, DWI and T2WI are performed after contrast agent injection. This study evaluated the clinical value of DWI and T2WI after contrast agent in the diagnosis of breast cancer. The results showed that contrast injection has no effect on DWI, but it can improve the signal-to-noise ratio and contrast-to-noise ratio of T2WI.
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