The purpose of this paper is to explore the successful b-value combination of IVIM-DWI that maximizes the diagnostic efficiency of parameters in differenting pancreatic cancer and normal tissues. IVIM parameters were measured by different b value combinations, and then the diagnostic performance of each significant parameter in identificating tumors and normal tissues was calculated and compared between different combinations. The results show that in different b value combinations, the diagnostic efficiency of the parameters are also different. The final conclusion is that b value combination of 0-1700 may be the best selection in clinical practice.
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