VENO is a Doppler flow meter, designed for the diagnosis of disorders of blood circulation in the peripheral vessels. The device can be used to perform an examination of the blood flow in the extra-cranial arteries, upper and lower extremities The 8 MHz probe allows the assessment of blood flow in vessels situated superficially under the skin surface. The reverse flow in venous disease can be easily detected. Device is efficient in penile vascular mapping by the urologist. Investigation consists of the assessment of the blood flow waveform, velocity values and indices. The audio Doppler signal is available from built in loudspeaker or headphones. The device is portable, equipped with handle for carrying the unit and resting the probe. VENO is easy to use. The function keys are described on the screen, respectively to actual menu level. In both on-line and freezing mode user can change registered velocity scale (respectively 20, 40, 60, 80, 120, 180, 240 cm/s), presentation form (flow towards and reverse the probe - A-B; A; B; AB) and time base sweep time. Time diagrams of momentary bi-directional velocity curves and calculated values are displayed on a liquid crystal display LCD and printed on thermal printer. The frozen on LCD curves can be reviewed (24 seconds) adjusted in scale and display mode, stored or printed. The real time clock adds the recordings stamp. The device is powered from an internal rechargeable battery. The battery charger symbol appeared in left upper corner on the screen signals that the battery is low. In absence of Doppler signal for more than a five minutes, the device will automatically switch off, thereby saving the battery. There are several options to choice including: memory - 10 positions, thermal printer or connection to PC and software for making reports.