Which of the following is NOT a major component of a CT scanner?

• A. Gantry
• B. Patient Table
• C. Computer
• D. Operating Console

Answer: (B)

The key idea here is to understand the main subsystems that actually enable CT imaging: the gantry, the computer, and the operating console. The gantry houses the X-ray tube and the detector array and rotates around the patient to acquire projection data. The computer takes those projections and reconstructs them into cross-sectional images that you can view and interpret. The operating console is the user interface used to set scan parameters, start procedures, and review the reconstructed images.

The patient table serves a crucial role in positioning and moving the patient through the gantry, but it is a mechanical support component rather than part of the imaging chain itself. It doesn’t generate X-rays, detect transmitted radiation, or perform data processing. So, while essential for workflow and accurate imaging, the patient table is not considered one of the major imaging subsystems of a CT scanner.