MRA与CTA腹盆腔血管数字化三维模型的构建及对胎盘植入诊治效果的对比研究

doi:10.7517/issn.1674-0475.190927

摘要/Abstract

摘要： 为探索通过磁共振血管成像（MRA）和三维CT血管造影（CTA）原始图像构建腹盆腔血管数字化三维模型并评估这两种方法在胎盘植入诊治中的应用效果，选取2018年1月~2019年1月在我院经临床综合诊断为胎盘植入的产妇40例为观察对象，按照随机数表法分为2组，对照组行CTA、观察组行MRA指导临床介入手术治疗。统计两组患者的腹盆腔血管三维模型血管清晰显示率及患者进行胎盘植入介入手术的X线辐射剂量、造影剂使用剂量等指标，并统计患者术后并发症的发生率。结果显示，两种成像方法均可较为清晰地显示一至三级动静脉血管，并可基本完整地重建显示其形态及走行。对骶前静脉的显示情况，CE-MRA成像方式明显优于CTA成像方式（P<0.01）。观察组术中介入时间、曝光时间、X线辐射量、造影剂剂量、造影剂速率均低于对照组（P<0.05），并发症发生率显著低于对照组（P<0.01）。此结果说明基于MRA的腹盆腔血管数字化三维模型可清晰显示一至四级动静脉血管，更适用于胎盘植入的诊断和介入治疗。

关键词: 磁共振血管成像, CT血管造影, 腹盆腔血管数字化三维模型, 胎盘植入

Abstract: To construct the digitalized 3 dimensional(3D) model of the pelvic and abdominal vessels by CTA and MRA original images, and assess the guiding effect on the treatment of placenta implantation, 40 cases patients with placenta implantation pregnant women from January 2018 to January 2019 were selected, and divided into 2 groups according to the random number table. The control group received interventional therapy guided by CTA, and the observation group received interventional surgery guided by MRA. The 3D model of abdominal and pelvic vessels of the two groups were analyzed, and the X-ray radiation dose and contrast agent dosage were calculated. The incidence of postoperative complications was also calculated. Results showed both of the methods could clearly display the third-grade arteriovenous vessels, and reconstruct them completely. CE-MRA was superior to CTA in presacral vein display (P<0.01). The interposition time, exposure time, X-ray radiation, contrast agent dose and contrast agent rate in the observation group were lower than those in the control group (P<0.05). The incidence of complications in the observation group was significantly lower than that in the control group (P<0.01). The digitalized 3 dimensional(3D) model by MRA can clearly display the first to fourth grade arteriovenous vessels, which is more suitable for the interventional treatment of placental implantation.

Key words: magnetic resonance angiography, CT angiography, digital three-dimensional model of abdo-minal and pelvic vessels, placenta implantation

中图分类号:

袁强, 曾燕妮, 谭敏仪, 覃亦伟, 洪勇. MRA与CTA腹盆腔血管数字化三维模型的构建及对胎盘植入诊治效果的对比研究[J]. 影像科学与光化学, 2020, 38(2): 333-338.

YUAN Qiang, ZENG Yanni, TAN Minyi, QIN Yiwei, HONG Yong. A Comparative Study on the Clinical Application of MRA and CTA Digital Three-dimensional Model of Abdominal and Pelvic Vessels in Placenta Implantation[J]. Imaging Science and Photochemistry, 2020, 38(2): 333-338.

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