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不论平时或战时,经常应用X线检查金属异物是否存留及其存留部位;并确定异物大小、形状及其在体内深度,而为手术取出异物提供重要依据。我院使用两球管焦点间距离固定为150毫米(因为每个球管套的外径为150毫米,两球管之焦点距为150毫米),焦点荧光屏或焦点胶片距离为600毫米,进行异物定位。此法是利用几何学原理进行定位。虽用两台X线机,但平时可随时拆装,而不妨碍单独的常规使用。本文介绍双束X线透视或摄影异物定位法,不仅可以定位,而且可指示手术镊子,
Whether usual or wartime, X-ray is often used to check the existence of metal foreign body and its location; and to determine the size, shape and depth of the foreign body, which provides an important basis for the removal of foreign body by surgery. The distance between the two spherical tubes in our hospital was fixed at a distance of 150 mm (because the outer diameter of each tube was 150 mm and the focal distance of the two tubes was 150 mm), the distance between the focal point screen and the focus film was 600 mm, Positioning. This method is the use of geometric principles of positioning. Although two X-ray machine, but usually at any time disassembly, without prejudice to the separate routine use. This article describes the dual-beam X-ray or photography foreign body positioning method, not only positioning, but also instructions surgical forceps,