Feasibility of periprocedural decision on the administration of intravenous contrast media in MRI for endometriosis.

To assess the feasibility of a periprocedural decision on the administration of intravenous contrast media in MRI for endometriosis and to evaluate the frequency and reasons of contrast administrations, the corresponding MRI diagnoses, and outcome. In this retrospective, descriptive cross-sectional single-center study all patients were included, who received a pelvic MRI for evaluation of endometriosis between April 2021 and February 2023. Frequency and reasons of optional intravenous administration of contrast media, corresponding MRI diagnoses and clinical outcome data were noted after re-review of all images, review of radiology reports and review of patients' medical records. The decision on the administration of intravenous contrast media had been made by experienced radiologists, depending on the findings of the non-contrast sequences and the presence of ancillary questions. 303 consecutive patients (mean age, 33.4 years +/- 8.3 [standard deviation]) were evaluated. Periprocedural decision on the administration of intravenous contrast media had been made in all cases. For 219/303 (72.3%) patients, it was decided after review of the non-contrast sequences and exclusion of ancillary questions that contrast administration was not required. 84/303 (27.7%) patients received contrast media, and the most frequent reasons were indeterminate ovarian lesion (41/84 cases, 48.8%) or suspicion of pelvic venous congestion syndrome (26/84 cases, 31.0%). No relevant differences in patient outcomes could be noted (non-contrast/contrast MRI). A periprocedural decision on the administration of contrast media in MRI for endometriosis is feasible with little effort. It allows the administration of contrast media to be avoided in most cases. If the administration of contrast media is deemed necessary, repeat examinations can be avoided.

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Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.