Patent ID: 8486017

Claim:
A method for injecting a contrast medium using a liquid injector into a subject whose fluoroscopic image is to be captured by an imaging diagnostic apparatus, comprising: registering data of a base operation-condition, including (i) data of a variable pattern and (ii) data of a predetermined injection time for an injection; controlling operation of said liquid injector so as to; (a) read out the base operation-condition, (b) calculate a total volume of the contrast medium to be injected, based on data of necessary dose of effective component per unit weight, data of subject's weight, and data of concentration of the effective component, (c) make an injection pattern based on the base operation-condition and the calculated total volume of the contrast medium, by moving a waveform of the variable pattern vertically depending on the total volume with said predetermined injection time unchanged for all volumes of the contrast medium, so that the area surrounded by the waveform will correspond to the volume of contrast medium, and (d) perform an injection in accordance with said injection pattern, without changing any injection parameter during the injection.