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Updated: Jun 21, 2026

In Vivo Quantitative Assessment of Myocardial Structure, Function, Perfusion and Viability Using Cardiac Micro-computed Tomography
Published on: February 16, 2016
Acute myocardial infarction with myocardial perfusion defect detected by contrast-enhanced computed tomography
Tetsuo Ichinose1, Miki Yamase, Yuki Yokomatsu
1Department of Cardiology, Juntendo University Urayasu Hospital, Urayasu. tichinose@juntendo-urayasu.jp
Insights
Contrast-enhanced CT effectively diagnosed acute myocardial infarction (AMI) in two patients presenting with chest pain and cardiac tamponade. This imaging technique identified myocardial defects before coronary angiography, aiding early AMI diagnosis.
Area of Science:
- Cardiology
- Radiology
- Medical Imaging
Background:
- Acute myocardial infarction (AMI) and acute aortic dissection can present with similar symptoms.
- Early and accurate diagnosis is crucial for effective patient management.
Observation:
- Two patients presented with distinct cardiac emergencies: one with migratory chest pain, the other with cardiac tamponade.
- Contrast-enhanced computed tomography (CE-CT) revealed a low-density area in the left ventricular postero-lateral wall in both cases.
Findings:
- CE-CT identified early contrast defects indicative of reduced myocardial blood flow, consistent with AMI.
- Coronary angiograms confirmed lesions in the left circumflex artery in these cases.
- CE-CT facilitated the diagnosis of AMI prior to coronary angiography.
Implications:
- CE-CT serves as a valuable tool for the early diagnosis of AMI.
- This imaging modality can help differentiate AMI from other acute cardiac conditions.
- Integrating CE-CT into diagnostic workflows can improve patient outcomes through timely intervention.
Abstract:
The first case was a 68-year-old woman who had acute migratory pain from back to anterior chest and the second case was 66-year-old man with a cardiac tamponade. Two cases were demonstrated with a low density area of the left ventricular postero-lateral wall with conventional contrast-enhanced computed tomography (CE-CT) performed to differentiate the diagnosis of acute coronary syndrome and acute aortic dissection. Subsequent coronary angiograms showed the lesions of left circumflex. These cases of early contrast-defect corresponded to a decreased myocardial blood flow with AMI. CE-CT image facilitated the diagnosis of AMI preceding CAG examination.
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