supply of 4d colour doppler ultrasound system at barasat government medical college & hospital , barasat. as per nit and boq , 4d colour doppler ultrasound system , the 4d colour doppler ultrasound system have the following essential components & features operational requirements : • digital ultrasound system platform for excellent 4d color doppler technical specification : • resolution 1024 x 768 • echo enriched beam former • should have 21.5” high resolution full hd monitor with view angle adjustable • dynamic range > 200db • post processing capability gain ( +20, -20 ) +tgc • dynamic pixel focussing • penetration up to 35cms • system should have at least 3 standard probe-connector and any prove can be connected in any port. • tissue harmonic imaging with phase inversion, pulse inversion, or wide bandwidth imaging technology • should automatically equalize gain and brightness with touch of one button • should provide for vascular imaging enhancing by using power doppler to enhance b mode image • cine loop memory • water and dust proof control panel • software for various applications including abdominal, obstetrical, gynecological, cardiac, small parts, urological, vascular, pediatric packages • built in automated real time intima media thickness measurement package. • built in natural touch elastography • auto track - intelligent vessel tracking and image optimization • built in real time panoramic imaging • radiant flow – 3d like color flow • hybrid hard disk ( 1tb & 128gb ssd ) , and usb ports, type c port • built in dicom compatible. • built in 2 step full screen imaging. • system should be 2 or more years warranty. power supply : • power input to be 220-240vac, 50hz, fitted with indian plug system should be supplied with the followingprobe: • curvilinearprobe –broad band and multi frequency • linearprobe –broad band and multi frequency • system should be at least ce approved