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3-aminopyridine-2-carboxaldehyde thiosemicarbazone  (... uh-MEE-noh-PEER-ih-deen ... KAR-bok-SAL-deh-hide THY-oh-SEH-mee KAHR-buh-ZONE)
A substance being studied in the treatment of cancer. It is a type of ribonucleotide reductase inhibitor. Also called 3-AP and Triapine.

3-AP  
A substance being studied in the treatment of cancer. It is a type of ribonucleotide reductase inhibitor. Also called 3-aminopyridine-2-carboxaldehyde thiosemicarbazone and Triapine.

3-D  
A graphic display of depth, width, and height. Also called 3-dimensional.

3-dimensional  
A graphic display of depth, width, and height. Also called 3-D.

3-dimensional conformal radiation therapy  (3-dih-MEN-shuh-nul kun-FOR-mul RAY-dee-AY-shun THAYR-uh-pee)
A procedure that uses a computer to create a 3-dimensional picture of the tumor. This allows doctors to give the highest possible dose of radiation to the tumor, while sparing the normal tissue as much as possible. Also called 3-dimensional radiation therapy.

3-dimensional radiation therapy  (3-dih-MEN-shuh-nul RAY-dee-AY-shun THAYR-uh-pee)
A procedure that uses a computer to create a 3-dimensional picture of the tumor. This allows doctors to give the highest possible dose of radiation to the tumor, while sparing the normal tissue as much as possible. Also called 3-dimensional conformal radiation therapy.

3F8  
A type of monoclonal antibody used in cancer detection or therapy. Monoclonal antibodies are laboratory-produced substances that can locate and bind to cancer cells.

3’-deoxy-3’-(18F) fluorothymidine  (… dee-OK-see … FLOOR-oh-THY-mih-DEEN)
A radioactive substance being studied in the diagnosis of cancer. 3’-deoxy-3’-(18F) fluorothymidine is injected into the blood and builds up in cells that are dividing, including cancer cells. The radiation that it gives off as it decays (breaks down) helps make clear pictures of tumors during positron emission tomography (PET) scans. It is a type of radiopharmaceutical. Also called 18F-FLT and fluorothymidine F 18.

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