online tender for fixing rate contract for supply and installation of portable ultrasound with color doppler system to dept . of vascular surgery , rajiv gandhi govt . general hospital , chennai , portable ultrasound with color doppler system as per specification , portable ultrasound with color doppler system , phased array probe with frequency range of ( 1-4 mhz ) for adult , linear array probe band width frequency ( 4-15 mhz ) , convex array probe with frequency range of ( 1-8 mhz ) , l-shape linear array probe band width frequency ( 6-18 mhz ) , laparoscopic probe band width frequency ( 4-13 mhz ) , centre 0-degree biopsy convex array probe band width frequency ( 1-8 mhz )