胎盘植入影像学诊断研究进展

doi:10.3969/j.issn.1006-5725.2024.21.003

Abstract

Abstract:

Placenta accreta spectrum （PAS） refers to a condition where placental villi abnormally adhere to or invade the uterine muscle layer to varying degrees. PAS can lead to severe obstetric complications， including postpartum hemorrhage， hysterectomy and even life-threatening situations. Nowadays， the diagnosis of PAS typically relies on imaging examinations such as ultrasound. Despite the widespread use of ultrasound， its accuracy is a subject of controversy， leading to the emergence of new imaging prenatal diagnostic indicators. This article aims to review prenatal diagnostic indicators of PAS， including ultrasound features and magnetic resonance imaging （MRI）. Additionally， we will discuss existing joint diagnostic methods and the latest research findings.

Key words: placenta accreta spectrum, ultrasound, magnetic resonance imaging

CLC Number:

R714.46⁺2

Cheng CHEN,Xinyang YU,Hua. ZHANG. Advances in imaging diagnosis of placenta accreta spectrum[J]. The Journal of Practical Medicine, 2024, 40(21): 2976-2981.

Figures/Tables 3

References 49

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超声	标志
2D灰阶	透明带消失
	异常胎盘陷窝
	膀胱壁中断
	子宫肌层变薄
	胎盘膨出
	局灶外生性团块
2D彩色多普勒	子宫膀胱界面高度血管化
	胎盘下高度血管化
	桥血管
	胎盘陷窝滋养血管
3D能量多普勒	胎盘内高度血管化

MRI	征象
7 个确定性征象	胎盘内T2低信号带
	胎盘/子宫膨出
	胎盘后T2低信号线消失
	子宫肌层变薄/中断
	膀胱壁中断
	胎盘局部外生团块
	胎盘床的异生血管
4 个不确定征象	胎盘内信号不均
	胎盘不对称增厚/形状
	胎盘缺血性梗死
	胎盘内异常血管

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Advances in imaging diagnosis of placenta accreta spectrum

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