Fig. 1
From: Clinical value of resting cardiac dual-energy CT in patients suspected of coronary artery disease
Mismatch between coronary stenosis severity and resting DE-CTP. A Curved multiplanar reconstruction CCTA reveals no coronary artery stenosis along left anterior descending (LAD). But resting DE-CTP analysis multiplanar reformatting demonstrates a rest perfusion defect in short-axis (B) and horizontal long-axis views (C), which confirmed by 13N-ammonia PET (E, F). In this 48-year-old female presenting with chest pain, serial troponin was mildly elevated leading to invasive coronary angiography (G), which revealed mild narrowing of the left anterior descending that resolved with intracoronary nitroglycerin, consistent with coronary vasospasm. D Fusion image of three-dimensional CCTA and two-dimensional DE-CTP shows the relationship between the perfusion defects area and corresponding supplying artery (LAD). DE-CTP = dual-energy CT perfusion; CCTA = coronary CT angiography; PET = positron emission tomography; LAD = left anterior artery