Evaluation of Three 3.0T MRI DWI Sequences for T Staging in Gastric Cancer

Motivation: Accurate staging is critical for effective gastric cancer treatment planning. Conventional DWI (C-DWI) has limitations in image quality due to magnetic field inhomogeneity, which hampers precise T staging. Goal(s): This study aims to compare the image quality and T staging accuracy of C-DWI, TSE-DWI, and Z-DWI sequences in MRI examinations of gastric cancer patients. Approach: A prospective study plan to enroll 72 patients undergoing preoperative MRI with C-DWI, TSE-DWI, and Z-DWI sequences using a 3.0 T scanner. Quantitative metrics (ADC,SNR,CNR) and image quality were evaluated. T staging accuracy was assessed by comparing MRI results with postoperative pathological staging using ROC analysis. Impact: This research enhances gastric cancer staging accuracy with advanced DWI sequences, potentially improving diagnostic precision and patient treatment outcomes.