Trial Parameters
Brief Summary
Pancreatic ductal adenocarcinoma (PDAC) accounts for 85-95% of pancreatic cancer and is one of the deadliest tumors in the world, with a survival rate of less than 8%, and identifying key prognostic or predictive factors facilitates risk stratification and prospective assessment in clinical trials. The extracellular matrix (ECM) surrounding PDAC often exhibits a large number of interstitial fibrosis, which is closely related to the formation, development and metastasis of PDAC. High order three-dimensional MR elastography (3D-MRE) allows non-invasive measurements of sheer stiffness in normal pancreas and pancreatic lesions. However, there are no reports about the application of MRE imaging biomarkers to predict the prognosis of PDAC at home and abroad.
Eligibility Criteria
Inclusion Criteria: 1. granting of written informed consent 2. age ≥18 years 3. no history of extrapancreatic malignancy 4. no preoperative biliary drainage 5. definitive histologic evidence of PDAC in excisional biopsy 6. with no less than three months of postoperative mortality or six months of follow- up Exclusion Criteria: 1. inability to re-review of tissue specimens 2. unacceptable estimates of MRE parameters, specifically invalid wave data during postprocessing, inconsistent breath-holdings, intolerable pain, and MRE hardware disconnection 3. tumor diameters \<1.0 cm 4. withdrawal/dropout during follow-up