The algorithms for the single-slice (SCCT) and MSCT scanners with four detector rows are referred to as spiral/helical fan-beam approximation algorithms.

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The algorithms for both single-slice and multi-slice CT scanners with multiple detector rows are often referred to as spiral/helical fan-beam approximation algorithms because they utilize a spiral or helical scanning path and fan-beam geometry for image reconstruction.

The Algorithms for the Single-Slice (SCCT) and MSCT Scanners with Four