论文部分内容阅读
目的:探讨胎盘植入(placental implantation abnormality,PIA)的影像学表现特征。方法:分析经手术病理证实的1例胎盘植入的MRI及超声表现,并复习文献资料。结果:MRI:以同序列子宫外围肌层信号为参照,T_1WI植入胎盘呈等信号或略高信号,与宫壁结构分界不清;T_2WI植入胎盘呈高信号,信号强度高于宫壁,胎盘组织侵入肌层,结合带局部变薄或中断;T_1WI增强,胎盘显著强化,明显强于宫壁。超声:局部胎盘厚度增加,其内见多个大小不一、形态不规则的无回声区;胎盘后方子宫肌层厚薄不均,其内见大片状稍强回声区;胎盘与子宫肌层接触的地方有异常的彩色的血流。结论:胎盘植入的影像学表现具有特征性,MRI结合超声检查有助于做出正确的定位和定性诊断。
Objective: To investigate the imaging features of placental implantation abnormality (PIA). Methods: MRI and sonographic findings of 1 placenta accreta confirmed by surgery and pathology were analyzed, and the literature data were reviewed. Results: MRI: with the same sequence of uterine myometrial signal as a reference, T_1WI placenta was equal or slightly higher signal, and the uterine wall structure is not clear boundaries; T_2WI implanted placenta was high signal intensity is higher than the uterine wall, Placental tissue invades the muscular layer, with the local thinning or interruption of the band; T_1WI enhanced placenta significantly enhanced significantly stronger than the uterine wall. Ultrasound: the increase in the thickness of the local placenta, which see a number of different sizes, irregular shape of the anechoic area; thickness of the uterine myometrium in the placenta after the uneven, which see the large flaky echogenic area; placenta and myometrial contact There are abnormal colored blood flow. Conclusion: The imaging findings of placenta accreta are characteristic. MRI combined with ultrasonography can help to make correct localization and qualitative diagnosis.