A 26 year old male presented to the dental clinic with pain in the right lower back tooth region. On examination, it was evident that pericoronitis is present with #48. The inherent filtration of the machine used is 3 mm of Aluminium operating at 70 kVp. By the use of this machine, the surface exposure:
Correct Answer: Reduces to 20% of the exposure without filtration
Description: Filtration results in decreased patient exposure with no loss of radiographic information.
When an X-ray beam is filtered with 3 mm of aluminum, the surface exposure is reduced to approximately 20% of the exposure with no filtration.
Reference: ORAL RADIOLOGY PRINCIPLES AND INTERPRETATION,8th EDITION, Stuart C. White,Michael J. Pharoah
Category:
Radiology
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