الفهرس | Only 14 pages are availabe for public view |
Abstract Pancreatic cancer is the fourth most common cause of cancer-related mortality worldwide, as the five-year survival rate is less than 5% and the mortality rate has not declined over the last few decades. Therefore, pancreatic cancer seems to remain one of the greatest challenges in the fight against cancer in the 21st century (Eun and Jeong, 2014). The implementation of ultrafast imaging techniques made DWI of the upper abdomen a feasible option and many studies indicate that DWI is promising in pancreatic imaging (Matsuki et al, 2007). With continuing improvement in the quality of body MR imaging sequences, single-shot T2- weighted and three-dimensional unenhanced and contrast-enhanced T1-weighted gradient-echo sequences have been successfully used to characterize cystic and solid lesions of the pancreas (Wang et al.,2011). The use of diffusion-weighted imaging may allow earlier detection of pancreatic adenocarcinoma, since these neoplasms have increased signal intensity on diffusion-weighted images with high b values (b > 500 sec/mm2) and relatively low ADC values because of the restricted diffusion associated with fibrosis (Wang et al., 2011). |