Detection of infarct-related myocardial edema using cardiac diffusion-weighted magnetic resonance imaging.
Detection of infarct-related myocardial edema using cardiac diffusion-weighted magnetic resonance imaging.
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DOI：
10.1016/j.ijcard.2007.08.096
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发表时间：
2009-03
影响因子：
3.5
通讯作者：
Satoshi Okayama;S. Uemura;Yoshihiko Saito
中科院分区：
文献类型：
--
作者：
Satoshi Okayama;S. Uemura;Yoshihiko Saito
一名50岁男性因胸痛入院，诊断为急性外侧壁心肌梗死。冠状动脉造影显示左冠状动脉回旋支闭塞，但已成功再灌注。再灌注三天后，进行心脏磁共振成像。黑血 T2 加权图像 (T2WI) 显示侧壁信号强度 (SI) 略有增加的区域，该区域被确定为梗死相关的心肌水肿。使用低 b 值单次回波平面序列结合心脏和呼吸门控采集的扩散加权图像 (DWI) 揭示了同一区域中 SI 显着增加的区域，在 T2WI 上被识别为心肌水肿。 DWI 的对比噪声比 (76.9) 显着高于 T2WI (27.0)。我们的研究结果表明，与 T2WI 相比，DWI 可以在梗塞相关心肌水肿方面提供更好的对比度。
A 50-year-old male was admitted to our hospital complaining of chest pain and was diagnosed with acute myocardial infarction of the lateral wall. Coronary angiography revealed an occlusion in the left circumflex coronary artery, which was successfully reperfused. Three days after reperfusion, cardiac magnetic resonance imaging was performed. Black-blood T2-weighted images (T2WIs) showed an area of slightly increased signal intensity (SI) in the lateral wall that was identified as infarct-related myocardial edema. Diffusion-weighted images (DWIs) acquired using a low b-value single-shot echo-planar sequence with combined cardiac and respiratory gating revealed an area of significantly increased SI in the same region identified as myocardial edema on T2WIs. The contrast-to-noise ratios of DWIs (76.9) was significantly higher than those of T2WIs (27.0). Our findings indicate that DWIs may provide better contrast in infarct-related myocardial edema than T2WIs.