Question

What control does the operator have over the x-rays in a CT exam?

a.) the temperature and color of the x-rays can be tuned
b.) the energy level and the quantity of the x-rays can be selected
c.) the volume and tone of the x-rays can be dialed
d.) the phase and frequency of the x-rays can be adjusted

Answer 1

In a CT exam, the operator can control the energy level and quantity of x-rays to produce detailed images while carefully managing exposure risks.

Step-by-step explanation:

In a CT exam, the operator has control over the energy level and the quantity of the x-rays. This means they can select different settings for the intensity and the number of x-ray photons used during the scan. Unlike visible light, x-rays have a much higher energy, which allows them to penetrate through the body and provide images of internal structures. This is why adjustments in the energy level are important for different types of tissues and body parts being examined. High-quality images are produced as the x-ray tube and detector array rotate around the patient, capturing multiple images or 'slices'. The use of x-rays in medical observations, especially via CT scanners in diagnostics, is an essential medical tool. However, it is important to use them judiciously due to the potential risks associated with overexposure to x-ray radiation.