Definition

Noun: A positron emission tomography scanner is a medical imaging device that uses a radioactive tracer to produce detailed, three-dimensional images of metabolic processes within the body. It is a type of tomograph that creates cross-sectional views to show how tissues and organs are functioning.

Usage

The term is used specifically in medical and scientific contexts to refer to the machine that performs PET scans. * The hospital acquired a new positron emission tomography scanner to improve its cancer diagnostics. * Researchers used the positron emission tomography scanner to study brain activity.

Advanced Usage

• The device is often referred to by its acronym, PET scanner.
  • The patient was wheeled into the room containing the PET scanner.

Variants and Related Words

• PET scanner (n): The common abbreviated form of "positron emission tomography scanner".
• Tomograph (n): A general term for any device that produces images of sections through an object.
• Positron emission tomography (PET) (n): The name of the imaging technique itself, not the machine.

Synonyms

• PET scanner
• PET imager

Related Phrases

• To undergo a PET scan: To have the imaging procedure performed.
  • The doctor recommended that the patient undergo a PET scan.
• PET scan results: The images and data produced by the scanner.
  • The PET scan results revealed areas of high metabolic activity.

Noun

1. a tomograph that produces cross-sectional X-rays of metabolic processes in the body