Table 3.
Doppler characteristics of the measured vessels in 83 healthy individuals.
| Site of measurment | Diameter (mm2) | TAV (cm/sec) | Semi - automated CSA (mm2) | Manual CSA (mm2) | Semi-automated calculation of BFV | Manual calculation of BFV | Correlation between methods |
|---|---|---|---|---|---|---|---|
| Venous side | |||||||
| R upper IJV | 5.9 (2.1) | 22.6 (11.2) | 30.9 (21.4) | 69.5 (39.4) | 390.9 (249.5) | 890.2 (557.9) | 0.580 |
| L upper IJV | 4.9 (1.8) | 21.3 (12.4) | 21.1 (14.8) | 49.2 (35.6) | 267.7 (216.4) | 590.0 (473.9) | 0.580 |
| R mid IJV | 6.5 (2.6) | 25.2 (16.5) | 38.0 (29.6) | 88.6 (54.8) | 463.9 (280.6) | 1090.1 (538.0) | 0.565 |
| L mid IJV | 5.4 (2.1) | 23.6 (15.9) | 26.1 (20.2) | 56.6 (39.3) | 311.4 (235.6) | 704.5 (504.2) | 0.669 |
| R lower IJV | 7.5 (2.7) | 25.8 (16.6) | 49.3 (33.2) | 89.7 (51.7) | 620.9 (384.7) | 1179.3 (618.8) | 0.500 |
| L lower IJV | 5.8 (2.3) | 27.5 (20.4) | 30.7 (22.9) | 60.7 (44.9) | 442.7 (333.7) | 881.1 (698.2) | 0.444 |
| Arterial side | |||||||
| R upper CCA | 5.8 (1.2) | 41.4 (7.1) | 27.3 (7.9) | 27.9 (6.6) | 685.0 (151.9) | 685.7 (163.1) | 0.999 |
| L upper CCA | 5.9 (0.8) | 43.4 (7.4) | 27.6 (7.7) | 27.6 (7.7) | 706.2 (187.4) | 706.5 (188.0) | 0.999 |
| R lower CCA | 5.9 (1.2) | 39.7 (6.6) | 28.9 (8.2) | 29.7 (6.8) | 701.3 (183.0) | 698.8 (170.0) | 0.887 |
| L lower CCA | 6.1 (0.7) | 44.5 (8.3) | 29.3 (7.1) | 29.3 (7.1) | 777.4 (205.3) | 776.9 (205.1) | 0.999 |
TAV – time averaged velocity, CSA – cross-sectional area, R – right, L – left, IJV – internal jugular vein, CCA – common carotid artery, BFV – blood flow volume. All measures are shown as mean (standard deviation). The volume is represented in ml/min. The comparison between the methods was derived using Pearson correlation coefficients