Rapid serial angiography: further experience.
نویسندگان
چکیده
A brief description of the machine (Fig. 1) was given in the earlier paper on this subject (Curtis, 1949), and this apparatus has been used for all the cases without modification. It was devised by Dr. E. Schuster and it enables exposures to be made at three variable speeds up to 2 frames per second. Intensifying screens are employed, and the images, each 10 in. wide by 8 in. long, are projected on to a strip of film 20 ft. in length. An antero-posterior projection has been obtained by rotating the head, but this is unsatisfactory because it is difficult to get accurate alignment, and the lateral projection only is in general use. This has been found to be adequate for most purposes when supplemented by antero-posterior views taken by the standard three-film technique (Curtis, 1951). After injection of the vertebral artery, however, it would be particularly useful if rapid serial angiograms could be taken in the half-axial projection, which provides more information than does the lateral vertebral angiogram. Several models of the machine have been made by Dr. Schuster for other purposes in which this projection is required, and it -would be a relatively simple matter to adapt one of -these for cerebral angiography.* There are one or two minor disadvantages, of a technical nature, which depend on the difficulty of developing a long strip of film. As was described in the preliminary report (Curtis, 1949), the film is
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عنوان ژورنال:
- Journal of neurology, neurosurgery, and psychiatry
دوره 15 2 شماره
صفحات -
تاریخ انتشار 1952