Computerised Methodologies for Non-Invasive Angiography-Derived Fractional Flow Reserve Assessment: A Critical Review

Figure 2

Haemodynamically significant intermediate stenosis assessed by QFR. (a) Coronary angiography showing a moderate lesion in the midright coronary artery with semiautomatic detection of lumen and vessel contours. The invasive FFR of this lesion showed haemodynamic significance (FFR = 0.73). (b) The computed colour-coded flow map of the reconstructed vessel. (c) Contrast-QFR pullback showing the pressure drop across the stenosis (p: proximal lesion marker; o: maximal lesion; d: distal lesion marker).

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(b)

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