Research Article
Multiple-Site Hemodynamic Analysis of Doppler Ultrasound with an Adaptive Color Relation Classifier for Arteriovenous Access Occlusion Evaluation
Table 1
The results of velocity measurements.
| | DOS/average velocity | Measurement site | | Arterial anastomosis site (A) | Loop site (L) | Venous anastomosis site (V) |
| | <0.30 (12) | | | | | (cm/sec) | 103.20 ± 18.35 | 64.60 ± 28.05 | 82.56 ± 25.30 | | (cm/sec) | 37.00 ± 10.80 | 28.83 ± 16.61 | 35.43 ± 17.37 | | (mmHg) | 4.26 ± 0.13 | 1.67 ± 0.31 | 2.72 ± 0.26 | | 0.30~0.50 (11) | | | | | (cm/sec) | 106.70 ± 28.80 | 54.91 ± 21.54 | 77.79 ± 18.54 | | (cm/sec) | 35.49 ± 19.96 | 16.61 ± 8.69 | 29.87 ± 15.81 | | (mmHg) | 4.55 ± 0.33 | 1.21 ± 0.19 | 2.42 ± 0.14 | | >0.50 (7) | | | | | (cm/sec) | 72.21 ± 40.58 | 25.61 ± 9.62 | 66.03 ± 42.12 | | (cm/sec) | 17.84 ± 8.7 | 7.86 ± 3.84 | 14.92 ± 14.19 | | (mmHg) | 2.09 ± 0.66 | 0.26 ± 0.04 | 1.74 ± 0.71 |
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Note: the pressure drop, (mmHg), can be related to the velocity, (m/sec), and is defined by [26].
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