Table 9 Features computed directly from the OCT images

1

Mean lumen radius

r_mean = average of radii along the vessel segment

2

Minimum lumen radius

r_min

3

Maximum lumen radius

r_max

4

Mean lumen radius for stenosis region

Average of radii along the stenosis region

5

Mean radius per length

r_mean/vessel segment length

6

Maximum radius rapport

(r_max − r_min)/r_max

7

Stenosis lesion length

lengthS

8

Percentage diameter reduction

\(100*\left(1-\frac{2*{r}_{{\text{mean}}}}{{r}_{{\text{proximal}}}+{r}_{{\text{distal}}}}\right)\)

9

Proximal radius rapport

\({{\left( {r_{r_{{\text{proximal}}} } - r_{{\text{distal}}} } \right)} / {r_{r_{{\text{proximal}}} } }}\)

10

Radius rapport

\({{\left( {\left( {r_{{\text{proximal}}} + r_{{\text{distal}}} } \right)/2 - r_{{\text{min}}} } \right)} / {\left( {\left( {r_{{\text{proximal}}} + r_{{\text{distal}}} } \right)/2} \right)}}\)

11

Proximal area

\(\pi {{r}_{\mathrm{proximal }}}^{2}\)

12

Distal area

\(\pi {{r}_{\mathrm{distal }}}^{2}\)