The Functional Severity Assessment of Coronary Stenosis Using Coronary Computed Tomography Angiography-Based Myocardial Mass at Risk and Minimal Lumen Diameter
Table 2
Quantitative coronary angiography and computed coronary angiography tomography.
All
FFR ≤ 0.8
FFR > 0.8
value
n
149
57
92
Involved vessel
0.463
RCA
27 (18)
9 (16)
18 (20)
LAD
90 (60)
38 (67)
52 (57)
LCx
32 (21)
10 (18)
22 (24)
Proximal lesion
54 (36)
22 (39)
32 (35)
0.768
FFR
0.82 (0.77–0.88)
0.75 (0.70–0.77)
0.87 (0.84–0.91)
<0.001
DS (%)
47 (40–56)
53 (45–65)
45 (39–54)
0.002
RD (mm)
2.65 (2.26–3.10)
2.56 (2.16–2.93)
2.75 (2.37–3.21)
0.025
MLD (mm)
1.39 (1.04–1.69)
1.21 (0.89–1.46)
1.49 (1.21–1.85)
<0.001
Length (mm)
12.0 (7.6–15.8)
11.9 (7.1–15.5)
12.3 (7.8–15.9)
0.848
MMAR (ml)
30.6 (21.9–44.3)
34.2 (23.8–54.1)
28.6 (20.6–40.2)
0.032
%MMAR
25.2 (18.1–33.5)
25.6 (18.3–33.2)
24.9 (18.0–33.6)
0.857
Values are presented as the median (interquartile range) or number (%). DS, diameter stenosis; FFR, fractional flow reserve; LAD, left anterior descending artery; LCx, left circumflex artery; MLD, minimal lumen diameter; MMAR, myocardial mass at risk; RCA, right coronary artery; RD, reference diameter.
