Zwicker C, Langer M, Langer R, Keske U
Strahlenklinik, Klinikum Rudolf Virchow, Freie Universität Berlin.
Aktuelle Radiol. 1993 May;3(3):172-6.
In 60 patients the density increases in the abdominal aorta and pancreas were examined quantitatively the visualisation of the arterial liver blood flow qualitatively in a test volume by means of spiral CT and a feed or speed differentiation of 10 mm/s for three different contrast medium boli. It was shown that during the entire study over 24 seconds the boli with 100 ml contrast medium at injection speeds of 3 ml/s and 50 ml contrast medium at 1.5 ml/s resulted in a continual density increase of the abdominal aorta from 221 to 265 Hounsfield Units (HU) or 161-167 HU, respectively. For measuring the abdominal aorta the bolus of 50 ml contrast medium at 3 ml/s was less suitable than the boli of 100 ml contrast medium with 3 ml/s and 50 ml with 3 ml/s because of the rapid in density from 250 to 118 HE. The bolus of 50 ml contrast medium and 3 ml/s, on the other hand, with 54 HU enhancement of the pancreas was approximately equal to the larger amount of contrast medium of 100 ml contrast medium and 3 ml/s with 56 HU, whereas 50 ml contrast medium and 1.5 ml/s with 46 HU was inferior. While all boli could sufficiently enhance the extrahepatic section of the hepatic artery, the larger amount of contrast of 100 ml proved to be superior to the other boli in the visualization of central intrahepatic vascular branches.
对60例患者，通过螺旋CT定量检测腹主动脉和胰腺的密度增加情况，并在一个测试容积中定性观察肝动脉血流，针对三种不同的造影剂团注进行10mm/s的进给或速度区分。结果显示，在整个24秒的研究过程中，分别以3ml/s的注射速度注入100ml造影剂和以1.5ml/s的速度注入50ml造影剂的团注，导致腹主动脉密度持续增加，分别从221亨氏单位（HU）增加到265HU或从161HU增加到167HU。对于测量腹主动脉，以3ml/s注入50ml造影剂的团注不如以3ml/s注入100ml造影剂和以1.5ml/s注入50ml造影剂的团注合适，因为其密度从250快速下降到118HU。另一方面，以3ml/s注入50ml造影剂的团注使胰腺增强54HU，与以3ml/s注入100ml造影剂且增强56HU的较大剂量造影剂大致相当，而以1.5ml/s注入50ml造影剂且增强46HU则较差。虽然所有团注都能充分增强肝外肝动脉段，但在显示肝内中央血管分支方面，100ml的较大造影剂剂量被证明优于其他团注。
