AP with pancreatic hemorrhage showed a decreased T2* value and a signal loss on the signal decay curve. Edematous AP, as well as the non-necrotic area in necrotizing AP, showed ill-defined but homogeneous signal intensity. Results: On GRE-T2*WI, the normal pancreas showed a well-marinated and consistently homogeneous isointensity. The usefulness of the T2* value for diagnosing AP and the relationship between the T2* values and the severity of AP were analyzed. Logistic regression was used to analyze the relationship between the T2* values and AP severity. The severity of AP was graded by the magnetic resonance severity index (MRSI) and the Acute Physiology and Chronic Healthy Evaluation II (APACHE II) scoring system. T2* values derived from T2*WI of the pancreas were measured for the two groups. Methods: Fifty-one patients without any pancreatic disorders (control group) and 117 patients with AP were recruited. Background: To study gradient recalled echo (GRE) T2*-weighted imaging (T2*WI) for normal pancreas and acute pancreatitis (AP).
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