椎骨動脈撮影における拡大開口位法

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タイトル別名
  • MENTO-OCCIPITAL-OPEN MOUTH VIEW IN THE VERTEBRAL MAGNIFICATION ANGIOGRAPHY
  • ツイコツ ドウミャク サツエイ ニ オケル カクダイカイコウイホウ

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Cerebral magnification angiography with a intensifying screen system of the specific rare earths, has lately been introduced and been requested to discriminate more minute vascular structures. Routine vertebral magnification angiography (VMG) with the screen system provides half-axial and lateral views or sometimes antero-posterior and lateral views. However, in the half-axial and lateral views, accurate X-ray reading of the vascular system in posterior cranial fossa is in trouble. In 1973 a mento-occipital open mouth view in the vertebral angiography started at our department and since 1975 the view has been provided with a magnification and the intensifying screen system. The mento-occipital-open mouth view in the VMG, X-ray vertically projected to basilar artery and decreased overshadow of the facial bones. The demonstration of the vertebro-basilar system, especially the junction point or beginning portion of arteria cerebelli inferior posterior (PICA) was more excellent than in the routine views. The reduction in the length of the vessels was reasonablly decreased. The half-axial view longitudinally reduces the vertebro-basilar vasculo-system and the lateral view blurs the vascular portion from the stem of basilar A. to vertebral branching of the PICA because of overshadows of bilateral petrous temporalis. Clinically the author's view was effective to analise the vascular arrangement in the VMG.

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