Pettersson H, Aspelin P, Boijsen E
Department of Diagnostic Radiology, University Hospital, Lund, Sweden.
Acta Radiol. 1988 May-Jun;29(3):273-5. doi: 10.1177/028418518802900303.
In a urographic experimental study in six rabbits conventional film-screen images were compared with digitized images. Two digitized images were examined, one simulating the conventional film-screen combination, and one frequency modified. The nephrographic and excretory phases of four different doses of contrast medium (iohexol, 350 mg I/ml) were investigated in each rabbit (4, 2, 1, and 0.5 ml/kg body weight). No differences were found between the different doses of contrast medium for the two imaging systems. With digitized images the exposure (radiation dose) could be decreased to 12.5 per cent of the conventional film-screen combination without any loss of information.
在一项对六只兔子进行的尿路造影实验研究中，将传统的屏片图像与数字化图像进行了比较。研究了两种数字化图像，一种模拟传统的屏片组合，另一种进行了频率修正。在每只兔子身上研究了四种不同剂量造影剂（碘海醇，350mg I/ml）的肾实质期和排泄期（分别为4、2、1和0.5ml/kg体重）。对于这两种成像系统，不同剂量的造影剂之间未发现差异。使用数字化图像时，曝光量（辐射剂量）可降低至传统屏片组合的12.5%，而不会损失任何信息。
