| Objective To evaluate the value of diffusion weighted imaging (DWI) and apparent diffusion coefficients(ADC) in distinguishing normal and malignant pancrestic lesions.Methods 25 cases of pancreatic cancer, which were confirmed by pathologic diagnosis, and 20 normal persons were examined . Five sequences of echo planar diffusion imaging were used , b value (×10-3s/mm2) was 50, 100, 300, 500 and 700 respectively. Then the ADC value were calculated.Results ADC values of tumor tissue were significantly different from that of the tissue in the same pancreas, when b value were 100 and 300×10-3s/mm2;There were statistically significant differences between tumor group and normal group when b value were 100 , 300,500 and 700×10-3s/mm2 .And ADC values of the tissue except for tumor tissue in the same pancreas were significant different from that of normal group when b value were 500 and 700×10-3s/mm2.Conclusion DWI is a rapid and feasible method in detecting pancreatic cancer. |
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