Which of the following best describes how a computed tomography scanner produces its images?
- A.Strong magnetic fields align hydrogen nuclei in the body
- B.High frequency sound waves are reflected off tissue
- C.A rotating X-ray system with digital detectors, reconstructed by computer algorithms
- D.Radioactive tracers injected into the bloodstream are tracked
Show answer
In a computed tomography machine the X-ray source turns around the patient while detectors record the radiation that passes through, and software then assembles those readings into cross-sectional pictures of the structures inside the body.
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