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Optimal timing of image acquisition for arterial first pass CT myocardial perfusion imaging
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文摘
Optimal timing of static, single-shot CT perfusion scans is important to differentiate ischemic from non-ischemic myocardial segments. Time delay between reaching 150 and 250 HU thresholds in the ascending aorta and optimal contrast in the myocardium are 4 and 2 s, respectively. Attenuation difference of more than 15 HU between normal and ischemic myocardium is present during approximately 8 s.

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