What role does the detector array play in a CT scan?

In a CT scan, the detector array plays a crucial role by absorbing the radiation that has passed through the patient's body and converting it into electrical signals. As the X-ray beam passes through different tissues, the varying density of the tissues affects how much radiation is absorbed. The detector array captures the remaining radiation, which allows the system to generate detailed cross-sectional images of the body based on the level of absorption. This absorption process is fundamental for creating accurate images that radiologists use for diagnosis and treatment planning, making the detection of radiation a vital function of the array in the overall imaging process.