Glossary with audio assistance

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C

the difference in radiographic density between adjacent areas on a radiograph

substances which are introduced into the patient to increase or decrease radiopacity and contrast during an X-ray

a radiographic procedure which improves the contrast of the area under examination

a drug whose use and possession is controlled by legislation

eating faeces

percussion of the chest using cupped hands to aid removal of secretions

herbivorous animal whose main microbial fermentation takes place in a modified stomach

the skull containing the brain

two parallel grids at right angles to each other

a fluid containing small molecules which move quickly from the circulation