Adaptive section collimation is a design to overcome overscanning, an issue of exposing the patient outside the imaged range which occurs for spiral CT with multirow detectors at the start and the end of the scan.

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Adaptive section collimation is used in spiral CT to minimize unnecessary radiation exposure by adjusting the collimation at the beginning and end of the scan, thus reducing overscanning.

Adaptive Section Collimation Is a Design to Overcome Overscanning, an Issue