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CH. 3

Radiation Characteristics

TermDefinition
Quality of x-ray beam is controlled by Kilo Voltage
Kilovoltage range 60-70 Kv
Higher Kv range produces x-rays with greater energy levels, more penetrating ability and shorter wavelengths
Unit measurement use to describe amount of electrical current flowing through x-ray tube volt
Radiation produced with high Kv results in short wavelengths
Quantity of radiation produced is controlled by mA and exposure time
Increasing mA results in temp filament and number of x-rays produced
mA range for current x-rays machines 6-8 mA
Density overall blackness/darkness
If Kv was decreased resultant image will appear lighter
Contrast how dark/light areas are differentiated
High contrast Image with many light and dark areas with few shades of grey
Images with high contrast have low kVp
Increased mA produce images with high density
Total energy contained in x-ray beam in one area at a time is termed intensity
What will increase intensity of x-ray beam Kv, mA, exposure time,sources to film distance-distance
Half value layer aluminum needed to reduce x-ray beam intensity by half
Created by: user-1888637
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