Profile: Transonic Systems Inc. deals with accurate, intuitive and reliable tools for flow verification. We specialize in biomedical flow measurement. Our product line includes physiogear, precision perivascular flowprobes, tubing module & tissue perfusion. Our flow and temperature signals are telemetered from a pocket-size physiometer to a remote computer with a rechargeable battery pack, for data collection without traditional wire signal transmission tethers. We demonstrate, that the Transonic® ReoCath™ flow catheter system is a reliable, reproducible & accurate device for measuring intragraft blood flows during PTA.