APPARATUS FOR COMPUTED TOMOGRAPHIC SCANNING

摘要

An improved method for computed tomographic scanning is disclosed. A beam of electromagnetic radiation subtending an angle phi is alternately translated and rotated past a patient. The intensity of the beam is detected by an array after the radiation passes the patient and a reconstructed image created from the detected intensities. Each rotation of the array is through an angle less than the angle phi subtended by the array producing redundant intensity readings for similarly oriented beam paths through the patient. This redundant intensity data is modified according to a scheme which tends to reduce motion and misalignment artifacts within the patient.