Question

Which of the statements in TRUE:

1. kV is the voltage potential between the tube cathode and anode while mA ultimately controls the filament temp of the cathode filament
2. kV controls the energy level of the x-ray photons and mA controls the number of x-ray photons emitted from the tube
3. although kV and the mA affect the operation of the CT x-ray tube, the two parameters have no bearing on the image quality

Answer 1

The correct statement is statement 2: kV controls the energy level of the x-ray photons and mA controls the number of x-ray photons emitted from the tube. Both kV and mA have a direct impact on the operation of the CT x-ray tube and affect the image quality to some extent.

Step-by-step explanation:

The correct statement is statement 2: kV controls the energy level of the x-ray photons and mA controls the number of x-ray photons emitted from the tube.

The voltage potential, or kV, between the tube cathode and anode determines the energy level of the x-ray photons. Higher kV values result in higher-energy photons. On the other hand, the tube current, or mA, controls the number of x-ray photons emitted from the tube. Increasing the mA increases the number of photons produced.

Both kV and mA have a direct impact on the operation of the CT x-ray tube. They affect the image quality by influencing the contrast, brightness, and overall quality of the x-ray image. However, it is important to note that other factors such as exposure time and image processing techniques also influence image quality.