Medical Isotopes Used In Treatment of Disease By: Rhoda Lam Michelle Liu

Iodine-125 Half-Life: 59.4 days The BRACHYSOURCE® iodine-125 implant Half-Life: 59.4 days Properties: heavy, grayish-black, metallic-looking material Used in the treatment of prostate cancer, lung cancer, brain cancer A low energy gamma emitter; maximum energies of 35 keV

Iodine-131 Half-life : 8.02 days Properties: Nonmetallic, purplish-black crystalline solid Used in brachytherapy or short-range therapy to treat thyroid cancer Helps treat non-malignant thyroid disorders Used due to its short half-life and useful beta emission

Strontium-89 & Samarium-153 Strontium-89 Half-life: 50 days Stontium-89 Properties: Silvery metal that rapidly turns yellowish in air Samarium-153 Half-life: 46.3 hours (1.93days) Samarium-153 Properties: Reactive, yellowish metal Used to provide pain relief for metastatic bone disease(cancers that have spread from the original tumor to the bone) Samarium-153 is used due to its short half-life

Phosphorus-32 Half-life: 14.29 days Properties: Reactive -White phosphorus: waxy, transparent solid -Red phosphorus: red powder -Black phosphorus: looks like graphite powder Used to control a disease called 'Polycythemia vera', where an excess of red blood cells are produced by the bone marrow. Used due to its short half-life Red phosphorus powder

Palladium-103 Half-Life: 16.99 days Used to manufacture brachytherapy permanent implant seeds The seeds are primarily used for the treatment of early stage prostate cancer Used due to its short half-life and low energy emission

Bibliography http://www.chemistryexplained.com/elements/P-T/Samarium.html http://www.nordion.com/our_products/medical_isotopes_iodine125.asp http://www.epa.gov/rpdweb00/radionuclides/technetium.html http://bardmedical.com/Iodine125 http://iodine-125.com/ http://www.cancer.gov/Common/PopUps/popDefinition.aspx?id=CDR000045874&version=Patient&language=English http://www.sciencegateway.org/isotope/phosp32.html http://216.55.99.51/clinical/palliative/strontium.html http://www.epa.gov/rpdweb00/radionuclides/iodine.html https://docs.google.com/viewer?a=v&q=cache:OBEppGQn3E4J:www.nordion.com/documents/products/Pd-103_Can.pdf+&hl=zh-CN&pid=bl&srcid=ADGEESinWz5oLD0hbfWSK5BEJFX7uU-u3QaZdRFtmEccCBXRGjz7IhmeHvUHIU_a3jWv_1O8c-A6t7WDcxR1oluExqJld3Scwknc0cEv_4EcKcXjFZomyjPdz2Vjv3qs1EzTI8oo5i0a&sig=AHIEtbS7qibFT4KMOyUPKI1L06e3oUKVtw