• Created by: chunks-42
  • Created on: 04-05-15 13:27

X0ray appearance on a conventional radiograph

  • Gas- Black
  • Fat-Dark Grey
  • Soft Tissue- Grey
  • Bone- White
  • Metal- Bright White

Medical X-ray Radiography

A conventional X-ray machine generates electrons when its cathode, a tungsten filament, is heated. The cathode is positioned in the hed of the tube which is kept under vaccuum conditions. The electrons emitted are attracted to the anode by a large potential difference. The anode gives off X-ray photons. Most of the radiation is absorbed by the tube but a windows allows some to escape.

Forming an X-ray Image

The X-ray beam is focussed onto the body or structure under investigation. The X-rays pass through the body to impact…


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