Diagnostic test accuracy of each of the four IDEA ultrasound steps in predicting presence of deep endometriosis

This validation study supports the use of the comprehensive four-step IDEA consensus protocol in detecting DE and justifies referral for specialist imaging in cases of suspected endometriosis. © 2026 The Author(s). Ultrasound in Obstetrics & Gynecology published by John Wiley & Sons Ltd on behalf of International Society of Ultrasound in Obstetrics and Gynecology.