Keywords: Pelvis, Cancer, Tumor microenvironmentTumor-stroma ratio (TSR) can reflect the relationship between tumor cells and tumor microenvironment. Evaluation of the TSR timely and accurately is important because of its role in predicting prognosis and making individualized treatment plans. Diffusion parameters obtained from multiple mathematical models of DWI can reflect microscopic characteristics of tumors. Multi b-value DWI with the advanced zoomed DWI technology can provide a higher-spatial-resolution with less artifacts. This study aimed to investigate the value of zoomed multi b-value DWI for predicting TSR in rectal cancer. The results suggested that distributed diffusion coefficient (DDC) is a promising indicator to identify high TSR group.
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