The Correlation of MRI and Laparoscopy in Evaluation of Deep Infiltrating Endometriosis

MR, Genital / Reproductive system female, Diagnostic procedure, Image verification Authors: I. Trofimenko1, D. Pavlov2, T. Bergen3, K. S. Petrov4; 1St. Petersburg/RU, 2St.Peterburg/RU, 3Novosibirsk/RU, 4Saint-Petersburg/RU DOI: 10.1594/ecr2013/C-0462 Purpose The purpose of the following study was to evaluate the accuracy of MRI with high in-plane resolution images in assessment of deep infiltrating endometriosis (DIE).

and Materials We performed retrospective review of 187 female patients (aged 23-45 y.o.), comparing MR images (1,5 T system) with laparoscopic findings. In all the cases surgery were performed no longer than 3 weeks after imaging. MR protocol included T2-WI in 3 standard planes with in-plane resolution 0,8х0,8 mm, slice thickness 3 mm; T1-WI with and without fat suppression and DWI with maximum b-value 800 s\mm2. All the patients obtained peristalsis inhibitor in standard dose prior the examination. Contrast enhancement was not used.

The following locations of endometriosis were assessed: ovaries (n=108), retrocervical space isolated (n=18), retrocervical space with sacro-uterine ligaments (n=32), retrocervical space with contact involvement of uterus (n=62), retrocervical space with contact involvement of rectum or sigmoid (n=48), vesico-uterine space and bladder (n=17), vagina (n=9), pelvic ureters (n=5). DIE appeared as fibrotic tissue with negative mass-effect with distortion of pelvic organs and peritoneal folds; it showed predominantly low signal intensity at T2-WI with cystic cavities and haemorhagic foci (high signal intensity at T1-WI with fat suppression)....

MRI shows good correlation with laparoscopy and can be used as accurate method of detection and pre-surgical evaluation of deep infiltrating endometriosis.

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