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

Figure 3

Haemodynamically significant intermediate stenosis assessed by CAAS-vFFR. (a) Coronary angiography demonstrating a moderate lesion in the distal right coronary artery with semiautomatic lumen border detection. The invasive FFR on this occasion is functionally significant (FFR = 0.74). (b) Colour-coded pressure drop map of the reconstructed 3D model. Aortic pressure acquired during coronary angiography (117/70 mmHg) is used for computation. (c) CAAS-vFFR pressure drop across the vessel highlighting the haemodynamic significance of the lesion.

(a)

(b)

(c)