“…These include hand injection, 15,17 Leveen pressure inflator 13 and dedicated delivery system by Coject (Angiodynamics, Glens Falls, NY, USA) 9,18,19 . The latter equipment is expensive, 13 but reported to be safer 7,19,20 . Kerns et al reported that a lower limit to the volume and rate of injection exists below which the bolus breaks up in the area of the imaging 5 .…”