Preoperative prediction of deep myometrial invasion and tumor grade for stage I endometrioid adenocarcinoma: a simple method of measurement on DWI.

TAR is useful for predicting deep myometrial invasion and high-grade stage I EEA KEY POINTS: • TAR is useful for predicting risk factors for EEA. • TAR is easy to obtain and has high accuracy. • TAR has excellent interobserver repeatability agreement (ICC range 95.1-99.6%).