What are the three components of a CBCT machine?

• A. Collimated x ray beam; patient/source; flat panel detector
• B. X-ray generator; Panoramic sensor; Digital computer
• C. Filament; Anode; Rotor
• D. Detector array; Computer; Hand switch

Answer: (A)

In CBCT imaging, three elements form the essential imaging chain: the X-ray source that creates a collimated cone-shaped beam, the patient who serves as the object the beam passes through, and the detector (a flat-panel detector) that records the transmitted photons as the gantry revolves around the patient. This combination—collimated X-ray beam, patient, and detector—lets the system acquire multiple projections from different angles to reconstruct a 3D volume. The other choices mix components that aren’t part of the core CBCT imaging chain, such as panoramic sensors or separate computer units, or focus on individual X-ray-tube parts rather than the full CBCT data-collection setup.