What does a high Detective Quantum Efficiency indicate?

A high Detective Quantum Efficiency (DQE) indicates high sensitivity to the radiation signal, meaning that the imaging system can effectively convert the incoming radiation into a meaningful image with minimal loss of information. DQE measures how well an imaging system retains the original information of the radiation signal, and a higher DQE value signifies that the system is more capable of producing a quality image with less input radiation.

When an imaging system has high DQE, it implies that it can operate efficiently at lower radiation doses. This is especially important in medical imaging where minimizing patient exposure to radiation is crucial. The ability to detect and accurately represent varying levels of radiation leads to better image quality and aids in proper diagnosis.

While options related to image noise, detail, and exposure time are relevant to imaging quality, they are secondary outcomes influenced by DQE. For example, lower noise can be a result of a high DQE, but it is not the defining characteristic. Similarly, increased image detail might be a benefit of high sensitivity, but it does not directly define what high DQE means. Thus, the core essence of high DQE lies in its capacity to enhance sensitivity to the radiation signal received.