What term describes the capability of a CT detector to absorb and measure transmitted x-ray intensity?

The term that accurately describes the capability of a CT detector to absorb and measure transmitted x-ray intensity is absorption efficiency. This refers specifically to how effectively the detector material captures incoming x-rays and converts this information into a measurable signal.

In the context of CT imaging, a higher absorption efficiency means that the detector can collect more of the transmitted x-ray photons, leading to better image quality and improved signal-to-noise ratio. This is essential for producing clear and diagnostically useful images.

In contrast, while terms like transmission efficiency and detection sensitivity may seem relevant, they do not directly address the specific process of x-ray absorption and measurement. Transmission efficiency pertains to how well x-rays pass through the body and reach the detector without being attenuated. Detection sensitivity refers to the ability of the detector to respond to low levels of radiation; however, it does not specifically highlight the efficiency of absorbing and measuring those x-rays. Radiation responsiveness typically describes the general behavior of materials in response to radiation, but lacks the specificity required in this context.