RESUMO
<p><b>OBJECTIVE</b>To establish a non-invasive, repeatable and dynamic study method in endometriosis rat model using magnetic resonance imaging (MRI), in order to explore the magnetic resonance characteristics of the model.</p><p><b>METHOD</b>Endometrium tissues were transplanted into left abdominal walls of unmated adult female SD rats. After surgery, pathological changes were observed and MRI scanning was made for the ectopic lesions.</p><p><b>RESULT</b>The endometriosis rat model was successfully established and the ectopic lesions imaged strong hyperintense on DWI, hypointense on T1WI, hyperintense on T2WI with a clear border, without enhancement on CE-T1 WI.</p><p><b>CONCLUSION</b>The lesions can be clearly observed in the MRI images on the endometriosis rat model established by this method, which facilitates repeat experiments and continuous observation studies.</p>