NCI Dictionary of Cancer Terms

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The NCI Dictionary of Cancer Terms features 7,791 terms related to cancer and medicine.

Browse the dictionary by selecting a letter of the alphabet or by entering a cancer-related word or phrase in the search box.

calcium-41 (41Ca) chloride aqueous solution
(KAL-see-um … KLOR-ide AY-kwee-us suh-LOO-shun)
A substance used to diagnose and monitor cancer that has spread to the bones. It is also used to study the turnover of bone tissue and to diagnose other conditions that affect the bones, such as osteoporosis. Calcium-41 (41Ca) is a form of calcium that gives off radiation. It is passed from the body in the urine.