大鼠子宫内膜异位症模型的磁共振表现

目的:在SD大鼠子宫内膜异位症模型上采用磁共振扫描异位病灶,探讨大鼠子宫内膜异位症模型的磁共振表现特点,建立一个观察子宫内膜异位症的无创、可重复、动态连续的研究方法。方法:取雌性未交配性成熟大鼠,将自体子宫内膜组织种植于左侧腹壁,术后进行组织形态学观察,并对异位病灶进行MRI扫描。结果:模型成功,异位病灶在DWI图像上呈明显的亮高信号,T1WI图像上呈低信号,T2WI图像上呈高信号,边界清楚,CE-T1WI图像上内部无增强。结论:此方法建立的大鼠子宫内膜异位症模型在MRI图像上可以清晰地观察到病灶部位,便于反复实验及连续性观察研究。

Magnetic resonance characteristics of endometriosis rat model

Objective: 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. Method: 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. Result: 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-T1WI. Conclusion: 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.