通过磁共振对心房隔膜缺陷进行成像和尺寸测量
G Holmvang1, I F Palacios, G J Vlahakes
1Department of Radiology, Massachusetts General Hospital, Boston, USA.
Circulation
|December 15, 1995
概括
对心房隔膜缺陷 (ASD) 进行准确的非侵入性大小测定对于穿皮关闭至关重要. 相对照电影MRI精确测量ASD大小,与旋回声MRI不同,有助于患者选择以导管为基础的干预措施.
科学领域:
- 心血管成像 - 心血管成像
- 医学诊断 医学诊断 医学诊断
- 干预心脏病学 干预心脏病学
背景情况:
- 对于心房隔膜缺陷 (ASDs) 的穿皮关闭技术,需要精确的非侵入性ASD大小测量以进行最佳的患者选择.
- 精确的缺陷测量对于确定适合于导管干预与手术修复的适合性至关重要.
研究的目的:
- 评估磁共振 (MR) 成像技术的准确性,以非侵入性地确定心房隔膜缺陷 (ASD) 的大小.
- 为了比较自旋回声和相对照电影MRI成像在测量ASD尺寸的有效性.
主要方法:
- 在30名患者中获得了自旋回声和相对照电影MRI图像的ASD.
- 使用两种MR技术测量了ASD主要和次要直径,并计算了缺陷区域.
- 将MR测量与手术模板和气球大小测量进行对比.
主要成果:
- 阶段对比电影MRI测量ASD大小显示与导管和模板标准密切一致 (主要直径:y = 0.78x + 5.7,r = .93).
- 旋回回声MR测量显著高估了二次ASD的主要直径 (48%) 和面积 (125%).
- 阶段对比 cine MR 通过分流流可视化精确定义了缺陷形状.
结论:
- 阶段对比电影MRI成像,通过可视化分流流,准确地确定ASD大小患者分层.
- 这种技术使得可靠的非侵入性评估为选择患者以导管为基础的闭合与手术.
- 旋回回声MRI成像对于ASD大小测定是不够的,因为它可能包含相邻的稀薄隔膜.
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