ABSTRACT
Newer technological features, such as cone-beam reconstructions, automatic tube current modulation, isotropic imaging, and automatic multiplanar reformations, have been introduced as an adjunct to the superior capabilities of multislice computed tomography (CT) scanners. This chapter discusses these newer developments in multislice CT scanners. Dual-source CT scanners were initially designed to increase the temporal resolution of CT. The number of electronic channels that are activated gives the most accurate indicator of the scanner's potential. The use of multislice CT scanners has resulted in a rapid increase in radiation dose to the general population. There are some technical differences between the 64-slice CT scanners from the different vendors, though the variations are small compared to the similarities they share. In single-slice CT scanners the X-ray beams are almost parallel. In a single-slice scanner, the pitch of the helical scan refers to the ratio of the table movement per gantry rotation to the slice width.
