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European Radiology Experimental
Fig. 3 | European Radiology Experimental

Fig. 3

From: Myocardial CT perfusion imaging for the detection of obstructive coronary artery disease: multisegment reconstruction does not improve diagnostic performance

Fig. 3

HSR and two-segment MSR of stress myocardial CTP in a 55-year-old man with suspected coronary artery disease and typical angina pectoris in comparison with invasive coronary angiography. a HSR shows a moderate perfusion defect in the left anterior descending artery territory (arrow), which is also suggested by moderate hypoattenuation in the corresponding area (circle) of the polar myocardial attenuation map; CTP with HSR was considered positive. b MSR shows only very slightly reduced perfusion (arrowhead) and only weak hypoattenuation in the corresponding area (dotted circle) of the polar myocardial attenuation map; CTP with MSR was considered negative. c Invasive coronary angiography reveals visually high-grade diameter stenosis (*) of the left anterior descending artery with 61% stenosis in quantitative invasive coronary angiography (**), corresponding to a true-positive CTP with HSR (a) and a false-negative CTP with MSR (b). Contrast-enhanced CTP in mid-heart short-axis view with 8-mm slice thickness and rainbow-red colour preset using a predefined window level/window width of 200/400. CTP Computed tomography perfusion, HSR Halfscan reconstruction, MSR Multisegment reconstruction

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