Final answer:
The image reconstruction software is the component that is not normally located in the gantry of a modern CT system.
Step-by-step explanation:
In a modern CT (computed tomography) system, the components typically found in the gantry are the X-ray tube, detector array, and patient table. However, the image reconstruction software is not usually located in the gantry. The image reconstruction software is a vital component that is responsible for processing the X-ray data collected by the detectors and generating the highly detailed, three-dimensional images produced by a CT scan.