Early experience with a large format image intensifier for thoracic, abdominal and peripheral angiography

By the use of a 36 cm image intensifier, its position under the table top and its great focus-image intensifier distance radiation geometric conditions were produced which are identical with the full-size film technique. With this equipment angiographic examinations of the thorax, abdomen as well as extremities were possible with the help of indirect fluorography. In accordance with examinations at anatomical models it turned out that the detail perception of the image intensifier-series fluorography was almost comparable to conventional full size film technique. Aside from the lower radiation dose and the shorter exposure time indirect fluorography offered additional advantages: By means of the fluoroscopic control of the contrast medium and the fluoroscopically controlled exposure a reduction of the methodical procedure was possible with regard to numbers of exposures and series just as saving of time for the complete examination. The evaluation and clinical demonstration of the 100 mm films were critically tested in the daily routine work. (orig.) 891 MG/orig. 892 MKO