Accuracy can be defined as closeness of agreement between a measured value and a true or accepted value. Transonic prides itself on the unprecedented accuracy of our Perivascular Flowprobes. At the lower end of the Perivascular Flowprobe measurement spectrum, our new 0.7 Microsurgical Flowprobe measures flow in 0.4 to 0.7 mm vessels with an absolute accuracy of ±10%. At the upper end of the measurement spectrum, our four-crystal AU-Series COnfidence Flowprobes, designed for accuracy with highly turbulent flows, can measure flows in 36 mm vessels with the same ± 10% absolute accuracy. Download the Clinical Flow Measurement Accuracy Specifications.