In which component does the reconstruction of raw data into image data take place in a CT system?

The reconstruction of raw data into image data occurs within the computer system of a CT system. During a CT scan, the detector array captures the x-ray photons and converts them into electrical signals. These signals are then processed by the data acquisition system, which collects and organizes the raw data.

Once the raw data is obtained, the computer system takes on the critical task of image reconstruction. It applies sophisticated algorithms to transform the raw data into digital images that represent cross-sectional views of the scanned anatomy. This process involves complex mathematical computations, such as filtered back projection or iterative reconstruction techniques, which allow for the visualization of internal structures.

Output devices, while important for displaying or printing the images, do not participate in the reconstruction process itself. Instead, they present the final reconstructed images for interpretation by radiologists or clinicians. Thus, the pivotal role of converting raw CT data into usable images is clearly designated to the computer system.