Transcutaneous range gated Doppler velocimeter measurements of femoral blood flow showed a highly significant correlation with electromagnetic probe measurements (r = 0.96, p < 0.001).
Effect estimate: r = 0.96
p-value: p=<0.001
Femoral blood flow (FBF) was measured in seven dogs, simultaneously with both an electromagnetic perivascular probe and a transcutaneous range gated Doppler velocimeter. Measurements were made in basal conditions and during intraarterial infusions of noradrenaline (10 to 400 ng . kg-1 . min-1) and isoprenaline (10 to 400 ng . kg-1 . min-1) thus allowing comparisons of ultrasonic (DBF) and electromagnetic (EMBF) blood flow at 91 different blood flow rates ranging from 5 to 300 cm3 . min-1. The linear regression line through the data of ultrasonic and electromagnetic simultaneous measurement was: DBF = 0.8 + 1.016 EMBF +/- 19.0 cm3 . min-1 with a highly significant correlation (r = 0.96, p less than 0.001) but there was a wide scattering about the mean. Errors in DBF were mainly due to positioning of the probe and determination of arterial diameter.
Chauveau et al. (Fri,) reported a other. Transcutaneous range gated Doppler velocimeter vs. Electromagnetic perivascular probe was evaluated on Correlation between ultrasonic and electromagnetic blood flow measurements (r = 0.96, p=<0.001). Transcutaneous range gated Doppler velocimeter measurements of femoral blood flow showed a highly significant correlation with electromagnetic probe measurements (r = 0.96, p < 0.001).