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MRI in the diagnosis of isolated noncompaction of ventricular myocardium
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- Author:
- No author available
- Journal Title:
- CHINESE JOURNAL OF RADIOLOGY
- Issue:
- 6
- DOI:
- 10.3760/j.issn:1005-1201.2005.06.007
- Key Word:
- 心血管畸形;心肌疾病;磁共振成像
Abstract： 目的探讨孤立性心肌致密化不全(INVM)的MRI表现及其对该病诊断的价值.方法 12例INVM患者均经超声心动图诊断.采用MRI不同脉冲序列,分析INVM心室结构、运动功能及心肌灌注的MRI表现.结果 (1)左心室单独受累9例,双室受累3例,未见右室单独受累者.左心室心尖段及前壁中间段为最常见受累部位(12例);(2)心肌增厚并能分层,非致密化心肌信号不均匀,由多发、粗大、交错排列的肌小梁及小梁隐窝组成,致密心肌变薄,信号均匀;(3)小梁隐窝内血栓2例;(4)心肌灌注成像首过期,6例14段(14/99段)可见灌注缺损;延迟期左心室心肌强化4例23段(23/99段),其中1例伴右室心尖心肌强化; (5)左心室普遍收缩功能不良4例,节段性功能不良5例. 结论 MRI能清晰显示INVM的形态学改变、心室节段性及整体运动功能异常、心肌血流灌注及纤维化的程度和范围,对INVM诊断及预后评估具有重要价值.
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