flowmeter could monitor various types of blood flow, via the intensity of the Doppler noise signal, but it could not provide absolute flow values. Their results launched the field of non-invasive spectral analysis of blood flow, including Doppler echocardiography and Doppler sonography. Although a similar device named a "pulsed ultrasound flowmeter" was designed by the Dean Franklin group at the University of Washington, Seattle, USA, its sensor had to be directly attached to the blood vessel wall. The Franklin group reported remote Doppler sensing of blood flow only in 1966, citing the work by Satomura and Kaneko. References Japanese physicists 1919 births 1960 deaths People from Osaka Prefecture Osaka University alumni Academic staff of Osaka University