Question

What is the purpose of the use of bowtie filters in CT?

a) Increase patient exposure
b) Ensure correct patient centering and reduce dose
c) Increase kilovoltage
d) Shape the intensity of the primary beam

Answer 1

Bowtie filters are used in CT scans to shape the intensity of the primary beam, ensuring uniform radiation exposure and reducing dose to the patient. The filters are thicker at the periphery and thinner at the center, allowing for a more even distribution of radiation.

Step-by-step explanation:

In CT scans, bowtie filters are used to shape the intensity of the primary beam. This is done to achieve uniform radiation exposure across the patient's body during the scanning process. The filters are thicker at the periphery and thinner at the center, allowing for a more even distribution of radiation. By shaping the intensity of the beam, bowtie filters help to reduce dose to the patient while ensuring correct patient centering.