Table 3 Analysis of borderline cases using the calculate threshold value for circular region of interest with diameter of 14x the disc diameter.
From: A novel method of quantifying retinal vascular tortuosity in retinopathy of prematurity
Borderline image | Human evaluation | Software evaluation | Calculated tortuosity |
|---|---|---|---|
1 | Abnormal | Abnormal | 259.49 |
2 | Normal | Normal | 192.54 |
3 | Abnormal | Abnormal | 255.25 |
4 | Normal | N.A. | N.A. |
5 | Normal | Normal | 130.47 |
6 | Abnormal | Abnormal | 343.89 |
7 | Normal | N.A. | N.A. |
8 | Normal | Normal | 95.86 |
9 | Abnormal | Abnormal | 253.71 |
10 | Abnormal | N.A. | N.A. |
11 | Normal | N.A. | N.A. |
12 | Abnormal | N.A. | N.A. |
13 | Abnormal | N.A. | N.A. |
14 | Normal | N.A. | N.A. |
