CTにおける止血用メタルクリップの検討

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Since EMI-scanner was first reported by J. Ambrose and G. Hounsfield in 1972,computed tomography (CT) has found a widespread use in clinical practice. Notably in neurosurgery it has become an indispensable radiolodical diagnostic procedure and has greatly contributed to the recent progress of neuroradiodiagnostics. CT permits to discriminate slight difference in X-ray absorption which conventional radiography cannot do. Its discrimination threshold is said to be a difference of 0.5% in X-ray absorption. On the other hand, it has been known that in the presence of a gross difference in X-ray absorption, an artifact is liable to occur, making the picture difficult to read. Thus, in the tomographic scans, of an orbital or basilar region where there are complex bony structures and air, or when there is something artificial within the cranium itself, e.g. an artifical bone, shunt tube, contrast medium and a hemostatic metal clip, a distinct artifact is apt to occur, deteriorating diagnostic comptence materially. So we attempted to select the hemostatic metal clip free from producing artifacts in order to enhance the diagnostic value of CT. As a result of studying various metal clips experimentally the Ti clip was the best of them all. In our daily practice of brain surgery we have successfully obtained computed tomograms of good quality completely free from artifacts by making use of the hemostatic Ti clip.
公益社団法人日本放射線技術学会の論文
1978-03-01

CTにおける止血用メタルクリップの検討

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