Question

MCQ: X-rays are filtered out of human body by using
A. cadmium absorbers
B. carbon absorbers
C. copper absorbers
D, aluminum absorbers​

Answer 1

• X rays are filtered out of human body by using Aluminium absorbers.
• Aluminium absorbers are used to filter the X ray beams.
• They are also used as a reference material for measuring the penetration capacity of X rays.
• Penetration capacity can be measured in terms of HVL (Half value layer).
• The minimum filtration material which is used usually is 2.5 mm aluminium (Al) equivalent, although there is an increasing trend to use greater filtration.