Table 1.
Comparison between the PCA and the proposed method. Columns 2–31 are the number of pulsative segments observed by the graders, while columns 32–35 are the scale-ten quality measures.
| Subject no. | Pulsatile features | |||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| SVPa | VP_Bb | VP_Cc | AP_Ad | AP_Be | AP_Cf | SMg | QOFh | |||||||||||||||||||||||||
| PCA | Proposed | PCA | Proposed | PCA | Proposed | PCA | Proposed | PCA | Proposed | PCA | Proposed | PCA | Proposed | PCA | Proposed | |||||||||||||||||
| method | method | method | method | method | method | method | method | |||||||||||||||||||||||||
| G1 | G2 | G1 | G2 | G1 | G2 | G1 | G2 | G1 | G2 | G1 | G2 | G1 | G2 | G1 | G2 | G1 | G2 | G1 | G2 | G1 | G2 | G1 | G2 | G1 | G2 | G1 | G2 | G1 | G2 | G1 | G2 | |
| 1 | 3 | 3 | 4 | 4 | 1 | 2 | 3 | 4 | 1 | 1 | 3 | 3 | 0 | 0 | 4 | 5 | 1 | 0 | 3 | 3 | 0 | 0 | 3 | 2 | 2 | 1 | 3 | 3 | 4 | 3 | 8 | 7 |
| 2 | 3 | 3 | 3 | 3 | 2 | 1 | 3 | 3 | 0 | 0 | 3 | 3 | 2 | 2 | 3 | 4 | 1 | 0 | 4 | 4 | 0 | 1 | 4 | 4 | 1 | 1 | 3 | 3 | 3 | 4 | 7 | 8 |
| 3 | 1 | 1 | 3 | 3 | 2 | 0 | 3 | 3 | 1 | 3 | 2 | 3 | 1 | 2 | 3 | 3 | 1 | 2 | 2 | 2 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 4 | 7 | 7 |
| 4 | 3 | 3 | 4 | 5 | 3 | 2 | 3 | 3 | 1 | 2 | 2 | 2 | 1 | 1 | 2 | 2 | 0 | 0 | 1 | 2 | 0 | 0 | 1 | 1 | 0 | 0 | 1 | 1 | 3 | 2 | 6 | 7 |
| 5 | 1 | 1 | 1 | 1 | 0 | 1 | 0 | 0 | 3 | 4 | 2 | 2 | 1 | 1 | 0 | 0 | 2 | 3 | 1 | 1 | 0 | 1 | 0 | 0 | 2 | 2 | 1 | 1 | 4 | 1 | 6 | 6 |
| 6 | 3 | 3 | 2 | 2 | 2 | 2 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 3 | 2 | 2 | 2 | 2 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | 4 | 4 | 8 | 7 |
| 7 | 1 | 2 | 1 | 1 | 2 | 3 | 1 | 1 | 1 | 3 | 1 | 2 | 0 | 0 | 1 | 1 | 0 | 1 | 2 | 2 | 0 | 1 | 0 | 0 | 2 | 2 | 2 | 2 | 1 | 3 | 7 | 6 |
| 8 | 3 | 3 | 3 | 3 | 2 | 2 | 3 | 2 | 1 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 0 | 1 | 1 | 2 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 2 | 3 | 6 | 7 |
| 9 | 3 | 3 | 4 | 4 | 1 | 1 | 3 | 2 | 1 | 1 | 3 | 2 | 1 | 1 | 1 | 1 | 0 | 0 | 2 | 1 | 0 | 0 | 1 | 0 | 1 | 1 | 2 | 2 | 2 | 2 | 6 | 6 |
| 10 | 3 | 2 | 3 | 2 | 3 | 2 | 3 | 2 | 2 | 2 | 2 | 2 | 1 | 2 | 1 | 1 | 1 | 2 | 1 | 1 | 0 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 3 | 2 | 8 | 6 |
| 11 | 3 | 3 | 2 | 2 | 1 | 1 | 2 | 1 | 2 | 3 | 1 | 2 | 2 | 2 | 1 | 2 | 3 | 4 | 3 | 2 | 2 | 3 | 3 | 3 | 2 | 2 | 2 | 2 | 6 | 5 | 9 | 9 |
| 12 | 1 | 2 | 1 | 1 | 1 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 2 | 1 | 1 | 2 | 2 | 5 | 6 |
|
| ||||||||||||||||||||||||||||||||
| Average | 2.3 | 2.4 | 2.6 | 2.6 | 1.7 | 1.6 | 2.1 | 1.8 | 1.3 | 1.9 | 1.9 | 2.1 | 1.1 | 1.3 | 1.8 | 2.0 | 0.9 | 1.3 | 1.8 | 1.8 | 0.3 | 0.8 | 1.4 | 1.3 | 1.3 | 1.3 | 1.6 | 1.6 | 3.0 | 2.9 | 6.9 | 6.8 |
|
| ||||||||||||||||||||||||||||||||
| Average of two graders | 2.4 | 2.6 | 1.6 | 2.0 | 1.6 | 2.0 | 1.2 | 1.9 | 1.1 | 1.8 | 0.5 | 1.3 | 1.3 | 1.6 | 3.0 | 6.9 | ||||||||||||||||
aSpontaneous venous pulsation within one OD diameter from the center; bvenous pulsation in zone B; cvenous pulsation in zone C and beyond; darterial pulsation in zone A; earterial pulsation in zone B; farterial pulsation in zone C and beyond; gserpentine movements and mechanical coupling between arteries and veins; and hquality of the observed features.