The Functional Severity Assessment of Coronary Stenosis Using Coronary Computed Tomography Angiography-Based Myocardial Mass at Risk and Minimal Lumen Diameter

<div>(a) Left coronary angiography (left cranial view) and (b) computed tomography angiography showed a calcified lesion (arrows) at the midsegment of the left anterior descending artery; the minimal lumen diameter (MLD) was 1.39 mm. (c) After setting a specific point at the culprit lesion (arrow), the software program (Synapse Vincent, Fujifilm Corp., Japan) showed that the myocardial mass at risk (MMAR) was 51.1 ml and that the %MMAR was 26.7%. Thus, the MMAR/MLD value was 36.8, which was highly predictive of fractional flow reserve (FFR) ≤0.8. (d) The invasive measurement revealed that the FFR was 0.76.</div>

Cardiovascular Therapeutics

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Figure 2

Figure 2: The Functional Severity Assessment of Coronary Stenosis Using Coronary Computed Tomography Angiography-Based Myocardial Mass at Risk and Minimal Lumen Diameter 

Figure 2 | The Functional Severity Assessment of Coronary Stenosis Using Coronary Computed Tomography Angiography-Based Myocardial Mass at Risk and Minimal Lumen Diameter 