摘要
目的:探讨产后胎盘植入低场MRI影像学表现。方法:回顾性分析产后胎盘植入患者8例,总结其MRI图像特点及诊断价值。结果:7例子宫增大,宫颈肿大并信号异常,T2WI、STIR高信号,结合带完整性破坏;植入胎盘位于宫底4例,前下壁1例、右前壁2例,左宫角1例;8例深入肌层均在2型以上;植入胎盘呈类圆形、椭圆形、不规则形;胎盘信号不均匀,5例在T1WI、T2WI、STIR序列均呈高低混杂信号;7例植入胎盘部部分边缘清楚,显示线样低信号环;增强扫描植入胎盘不均匀强化;近植入处周围血管增多。结论:低场MRI对胎盘植入诊断敏感性、特异性高,对临床方案选择具有重要价值。
Objective: To explore the low field MRI imaging manifestations of postpartum placental implantation. Methods i Eight patients with postpartum placental implantation were analyzed retrospectively, the MRI image characteristics and diagnostic value were summarized. Results: The uteruses of five cases enlarged, cervix also enlarged, and the uterine signals were abnormal, showing high T2WI, STIR signals, the integrity of junction was destroyed ; the positions of implanted placentae : uterine fundus ( four cases), anterior and inferior wall (one case), right and front wall (two cases), left uterine angle (one case) ; the types of 8 cases with muscular layer infiltration were above type 2; the shapes of implanted placentae: quasi -circular, oval, and irregular form; the placental signals were not symmetrical, mixed high and low signals were observed in five cases in T1WI, T2WI, STIR images; partial margins of implanted placentae in seven cases were clear, showing linear low signal cycle; the implanted placentae were enhanced asymmetrically; the number of blood vessels adjacent to implantation increased. Conclusion : The sensitivity and specificity of low - field MRI for diagnosis of placental implantation are high, which has important value for choice of clinical protocols.
出处
《中国妇幼保健》
CAS
北大核心
2013年第29期4879-4881,共3页
Maternal and Child Health Care of China
基金
广东省中山市医学科研基金项目〔2009049〕
关键词
产后
胎盘植入
磁共振成像
Postpartum
Placental implantation
Magnetic resonance imaging