Mosby's Exam Review for CT questions with correct answers

180-dgree linear interpolation (180 LI) CORRECT ANSWER Type of algorith used for MSCT image reconstruction in which data acquired from a shorter distance (180 degrees) away from the reconstructed slice location are interpolated. absorbed dose CORRECT ANSWER the amount of x-ray energy absorbed in a unit of mass. It is measured in grays. (Gy) 360-degree linear interpolation (360 LI) CORRECT ANSWER type of algorithm used for MSCT image reconstruction in which two sets of projection data acquired 360 degress apart are used to form an image at a precise z-axis location. absorptopm efficiency CORRECT ANSWER the ability of an individual CT detector to absorb and measure the transmitted x-ray intensity incident upon it. primarilly controlled by the characteristics and physical makeup of the detector material. adaptive array CORRECT ANSWER the type of MSCT detector array configured with the thinnest detectors at the center, surrounded by detectors of incrementally increasing widths along the z-axis. advanced single-slice rebinning (ASSR) algorithm CORRECT ANSWER cone beam correction algorithm used to overcome potential attenuation calculation errors from the divergent beam of MSCT systems. afterglow CORRECT ANSWER the tendency of a scintillation-type CT detector to continue to glow in response to x-radiation after the exposure source has been terminated.