Which statement best describes high DQE?

Which statement best describes high DQE?

• A. There is high efficiency in converting x-ray signal into an image
• B. There is low efficiency in converting x-ray signal into an image
• C. A higher x-ray signal is required to produce a quality image
• D. A lower x-ray signal is required to produce a quality image

Answer: (A)

High DQE means the detector is efficient at turning the incoming x-ray energy into a usable image signal, with minimal loss to noise. Because of this efficiency, you can achieve the same image quality with less exposure, or get better image quality at the same exposure. The statement that best captures this is that there is high efficiency in converting x-ray signal into an image. The other ideas describe the opposite (low efficiency) or imply a different dose relationship that isn’t the defining description of DQE.

High DQE means the detector is efficient at turning the incoming x-ray energy into a usable image signal, with minimal loss to noise. Because of this efficiency, you can achieve the same image quality with less exposure, or get better image quality at the same exposure. The statement that best captures this is that there is high efficiency in converting x-ray signal into an image. The other ideas describe the opposite (low efficiency) or imply a different dose relationship that isn’t the defining description of DQE.