澳洲西澳大学论文代写:x光的使用

澳洲西澳大学论文代写:x光的使用

首次使用x射线网格由古斯塔夫·巴基在1913年减少散射图像受体。网格是静止的,导致网格线的电影,但减少的数量大大提高散射到达胶片的反差的x光照片。

铅的网格是用带夹在射线可透过的物质。这些铅带的角度以这样一种方式,只允许从主光束通过x射线图像受体。网格是病人和图像受体之间放置。

这些天网格是建立表和直立Bucky系统。然而也有固定网格,内置在磁带或包裹在射线可透过的材料,可用在卧床不起的病人和用于创伤放射学。

澳洲西澳大学论文代写:x光的使用

The x-ray grid was first used by Gustave Bucky in 1913 to reduce the amount of scatter reaching the image receptor. The grid was stationary, which caused grid lines on the films, but the reduction in the amount of scatter reaching the film greatly improved the contrast of the radiograph.

The grid is made using strips of lead sandwiched between radiolucent material. The lead strips are angled in such a way as to only allow x-rays from the primary beam to pass through to the image receptor. The grid is placed between the patient and the image receptor.

These days the grid is built into the table and upright Bucky system. However there are also stationary grids, that are either built into the cassette or encased in a radiolucent material, available for use on bed-ridden patients and for use in trauma radiology.

 

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