Final answer:
Repeats in medical imaging are images that must be retaken, usually due to poor quality or problems with the initial scan, leading to additional radiation exposure for the patient. CT scans are a form of advanced imaging that can produce detailed 3D images but may also require repeats if the initial images are unsatisfactory.
Step-by-step explanation:
Repeats in the context of medical imaging, specifically when discussing breast stereo-localization or quality control (QC), refer to images that must be retaken due to various issues. These issues can include the release of radiation, producing poor quality images, or additional exposure to the patient. Discarded images, though they might involve exposure, are not classified as repeats since repeats are specifically the new images captured after an initial substandard result.
Medical imaging technology such as computed tomography (CT) scans, which provides a detailed three-dimensional view of the subject by rotating an array of detectors around the patient, can also be subjected to repeats if the initial scans are not of satisfactory quality. This process is important to consider because every repeat involves additional radiation exposure to the patient.
One sophisticated instance of medical imaging technology is computed tomography (CT), also called computed axial tomography (CAT) scanner, awarded the Nobel Prize in Medicine for its development. It involves the use of many detectors and advanced computer processing to produce high-resolution, three-dimensional images of the body's interior.