Advanced Diagnostic Imaging Studies. Theatre Imaging. Some Essentials. Principles of radiography/terminology Basic anatomy Operative procedures and radiographic technique Dose limitation Health & Safety. Major Directional Terms. AP Position?.
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•Areas where bodily fluids may settle:
•Easily cleaned surfaces
•Ability to cover with sterile drapes
Difference between adjacent densities on a radiograph
The number of black, white and grey tones that appear on a radiograph
Controlled by the energy of the x-ray beam
Main controlling factor in radiographic contrast
Selected by radiographer for every exposure
Has a major influence on quality of the radiograph
Z atomic number
E beam energy
As kVp increases absorption by photoelectric effect rapidly decreases causing a reduction in radiographic contrast
Determines the energy of the x-ray beam
Low energy beam is easily absorbed
Differential absorption increases
High energy beam penetrates body more easily
Differential absorption decreases
Designed to make life easier for
surgeon to place locking screws
with better accuracy.
Reduces need for x-rays and
reduces time under anaesthetic.
Typical screening position –intensifier on top