CT value is held down to necessary level and the chemicals feeder which lightens also the burden of the subject is disclosed. This fill device (100), it loads the syringe where the contrast medium fills up, the piston drive which operates this syringe (130) it has, corresponding to plural CT values beforehand with the medical picture diagnostic device the fill device which is used (100) in, the factor table where the respective factor a and factor b are recorded (411) the data logging expedient which is retained (410) with, weight of the subject (x) the weight input expedient which accepts input (431) with, the CT value input expedient which accepts the input of target CT value (432) with, the aforementioned factor table (411)You refer to, you refer to factor a and the factor b which, correspond to the target CT value which is input formula (1) follow to y=ax+b, fill speed (y) the operational expedient which is sought (420) with you possess, you do contrast medium fill the fill speed which was required (y) with in accordance.CT値を必要レベルに押さえ被験者の負担も軽減する薬液注入装置が開示される。この注入装置(100)は、造影剤が充填されたシリンジを搭載し、このシリンジを動作させるピストン駆動機構(130)を備え、医療画像診断装置と共に使用される注入装置(100)において、予め複数のCT値に対応してそれぞれ係数aおよび係数bが記録された係数テーブル(411)が保存されたデータ記録手段(410)と、被験者の体重(x)の入力を受け付ける体重入力手段(431)と、目標CT値の入力を受け付けるCT値入力手段(432)と、前記係数テーブル(411)を参照し、入力された目標CT値に対応する係数aおよび係数bを参照し、式(1)y=ax+bに従って、注入速度(y)を求める演算手段(420)とを有し、求められた注入速度(y)に従い造影剤注入を行う。
