Contour-free multi-instance learning versus conventional CT features for preoperative Ki-67 stratification in gastric gastrointestinal stromal tumors: a retrospective comparison
This retrospective study of 61 patients found that contour-free complete-series multi-instance learning applied to dual-phase CT scans did not demonstrate a statistically significant discrimination advantage over conventional CT features for preoperative Ki-67 stratification in gastric gastrointestinal stromal tumors.