The lead collimator restricts the size, shape and direction of the x-ray beam, limiting the exposure area and protecting the patient from unnecessary radiation. It does not carry away heat, filter the longer-wavelength x-rays or permit a small number of x-rays to exit from the x-ray tube.

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The Lead Collimator

Question 32

Multiple Choice

The lead collimator:

A) Carries away the heat produced during the production of x-rays.
B) Permits a small number of x-rays to exit from the x-ray tube.
C) Filters the longer-wavelength x-rays from the beam.
D) Restricts the size of the x-ray beam.

Correct Answer: