Slice refers to the number of rows of detectors in the z-axis of a CT scanner. As shown in the below infographic, common range counts range from 16, 32, 4, and 128. You will also find counts from 256, 320, and 640 in newer models.
As slice counts increase, so do the price, up-front costs, and service costs. For typical price ranges on CT scanners and slice counts, check out our 2024 CT Scanner Price Guide.