Change: . 5centers.⁵Brachytherapy using Au-198 grains to treat choroidal malignant melanoma study. Radioactive sources were placed into surgically constructed scleral pockets, see photo 4. The radiation   View changes from previous version. (Word count: 865)

Change: Ten percent of the seeds to be used for an implant should be drawn at random and assayed before use to verify the manufacturer's calibration.   View changes from previous version. (Word count: 877)

Change: follow up study. In Radiation Medicine. 1999:17(3),243-246.Photo references:#1cornerstonegoldrefining.com/History.html.#3http://www.orau.org/ptp/collection/brachytherapy/seeds.htm Accessed 4/2/09#4 Kawamura T, Koga S, Nomura T et al. Brachytherapy of a choroidal melanoma using radioactive gold grains: a long term follow up study. In Radiation Medicine. 1999:17(3),243-246.Authors:Denise,Michelle,   View changes from previous version. (Word count: 697)

Change: follow up study. In Radiation Medicine. 1999:17(3),243-246.PhotosPhoto references:#1cornerstonegoldrefining.com/History.html.#3http://www.orau.org/ptp/collection/brachytherapy/seeds.htm Accessed 4/2/09#4 Kawamura T, Koga S, Nomura T et al. Brachytherapy of a choroidal melanoma using radioactive gold grains: a long term follow up study. In Radiation Medicine. 1999:17(3),243-246.Authors:Denise,   View changes from previous version. (Word count: 696)

Change: Exposure Rate Constant : 2.35 R-cm^2 / mCi-hrAir-Kerma Strength : 2.06 cGy-cm^2 / mCi-hr (2.²06 U)² Half-life Properties: Half-Life: 2.69 days¹ Forms available for use: Cylindrical grains or seeds encapsulated in 0.1 mm thick platinum wall.¹ A gold seed is   View changes from previous version. (Word count: 694)

Change:  Photo # 4: Au-198 sources placed in the eyeball. Relevant Historical Data: An attractive and highly valued metal, gold has been known for at least 5500 years. 3 Gold seeds replaced radon seeds for many years, until iodine 125 gained more widespread acceptance.2 Chemical/Radioactive Composition: Chemical Symbol : AuAtomic   View changes from previous version. (Word count: 639)

Change: 106 mCi of Au-198 is implanted into a pelvic mass. Determine the emitted radiation.Mean life of Au-198 = 1.44 times 2.7days=3.888daysEmitted radiation= 106mCi x 3.888days= 412.128mCi-days Uses in Radiation Oncology: High dose rate therapy. Prostate seed implant.¹ Interstitial permanent implants.2 Treatment Planning: In 1972,   View changes from previous version. (Word count: 534)

Change: Chemical Symbol : AuAtomic Number : 79Atomic Mass : 196.96655amu 4 Energy Characteristics: Monoenergetic energy of 412 kev.¹ Beta rays of maximum energy 0.96MeV are also emitted but are absorbed by the platinum wall.2 Exposure Rate Constant: 2.38² Half-life Properties: 2.69 days¹ Forms   View changes from previous version. (Word count: 323)

Change: Beta rays of maximum energy 0.96MeV are also emitted but are absorbed by the platinum wall.2 Exposure Rate Constant: 2.38² Half-life Properties: 2.69 days¹ Forms available for use: Cylindrical grains or seeds encapsulated in platinum.0.1 mm thick platinum wall.¹ A gold seed   View changes from previous version. (Word count: 294)

Change: There is roughly 1 milligram of gold dissolved in every ton of seawater, although extracting it currently costs more than the gold is worth. It has been estimated that all of the gold that has currently been refined could be placed in a cube measuring 20 meters on a side.3   View changes from previous version. (Word count: 244)