A number of investigators have reported on the techniques and clinical value of the Doppler ultrasonic flowmeter in evaluation of peripheral vascular disease (1, 2, 3). The obvious advantage of ultrasonic flowmeter is that it is noninvasive, relatively easy to use, utilizes equipment of moderate cost, and is portable. The technique provides both qualitative as well as quantitative data that can be applied directly to the evaluation of a patient. Ultrasonic techniques do not carry the morbidity of angiography where intimal damage may occur with resultant thrombus formation or hematoma as a direct result of the instrumentation with the radiological procedure (4, 5, 6). In contrast to angiography, the ultrasonic techniques provide information about the hemodynamics of flow and the functional status of the vascular tree (7,8,9).Since 1967 we have carried out extensive investigations of the practical clinical applications of the ultrasonic flowmeter in the Hospital in Columbia, Missouri, was activated in April 1972; during the first year approximately 300 patients were examined for diagnosis and screening for vascular disease. Thirty of these patients were found to have extensive vascular disease amenable to surgical reconstruction. Angiographic diagnosis was performed and the results of both Doppler and angiography compared. In each instance we noted that the ultrasonic diagnosis and radiologic evaluation were comparable. Sites of occlusion and stenosis were uniformly predicted by the ultrasonic technique which was confirmed by angiography. Information on the relative functional impairment as determined by data from ankle pressures, pressure gradients, velocity ratios, and qualitative evaluation of the pulse changes detected by the velocity frequency difference (fd) proved invaluable in developing the strategy of reconstructive procedures in individual cases-information not provided by angiographic studies. The point to be made here is that the diagnostic data from the ultrasonic studies were obtained by a technician who had no prior experience with peripheral vascular disease and who, after 1 month of training, was able to obtain leg pressures and other data, which were reproducible both by the technician and others. The use of paramedical personnel in obtaining such information is important as it frees the physician from the routine and allows him to apply himself with more efficiency to the patient with peripheral vascular occlusive disease. by guest on August 11, 2015 ang.sagepub.com Downloaded from