Physics » Medical Applications of Nuclear Physics » Medical Imaging and Diagnostics

# Summarizing Medical Imaging and Diagnostics

## Medical Imaging and Diagnostics Summary

• Radiopharmaceuticals are compounds that are used for medical imaging and therapeutics.
• The process of attaching a radioactive substance is called tagging.
• This table lists certain diagnostic uses of radiopharmaceuticals including the isotope and activity typically used in diagnostics.
• One common imaging device is the Anger camera, which consists of a lead collimator, radiation detectors, and an analysis computer.
• Tomography performed with $$\gamma$$-emitting radiopharmaceuticals is called SPECT and has the advantages of x-ray CT scans coupled with organ- and function-specific drugs.
• PET is a similar technique that uses $${\beta }^{+}$$ emitters and detects the two annihilation $$\gamma$$ rays, which aid to localize the source.

## Glossary

### Anger camera

a common medical imaging device that uses a scintillator connected to a series of photomultipliers

### gamma camera

another name for an Anger camera

### positron emission tomography (PET)

tomography technique that uses $${\beta }^{+}$$ emitters and detects the two annihilation $$\gamma$$ rays, aiding in source localization

compound used for medical imaging

### single-photon-emission computed tomography (SPECT)

tomography performed with $$\gamma$$-emitting radiopharmaceuticals

### tagged

process of attaching a radioactive substance to a chemical compound

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