Cobalt - 60 - History Page - UWL Medical Dosimetry Brachy Class 08-09

	Date/Time	Made By	Type	Scope
	Apr 13 2009, 1:12 AM EDT	JeremiahDonner	edit	1 word added
Change: 4, 2009.9. Cobalt -60. Human Health Fact Sheet. Available at http://www.ead.anl.gov/pub/doc/Cobalt.pdf. Accessed on April 4, 2009. 10. Martinez, Orton, and Mould. Brachytherapy HDR and LDR. Colombia: Nucletron Corporation; 1990. p. 138-142.11. Wikipedia. Co-60. Available at: http://en.wikipedia.org/wiki/File:Cobalt-60_Decay_Scheme.svg Accessed: 6 April 2009.Group Colors:Theresa. Brandie, Christy, Jeremiah View changes from previous version. (Word count: 1540)
	Apr 12 2009, 4:42 PM EDT	cchambers	edit	12 words added 3 words deleted
Change: 3. Cobalt-60 Fact Sheet - http://www.doh.wa.gov/EHP/RP/factsheets/factsheets-pdf/fs26co60.pdf References:1. Khan, Faiz M. The Physics of Radiation Therapy. 3rd Edition. Philadelphia: Lippincott Williams & Wilkins; 2003: p.367, 358, 361, 369-371.2. Radioisotope Brief: Cobalt-60 (Co-60). Centers for Disease Control and Prevention (CDC). Available at: http://www.bt.cdc.gov/radiation/isotopes/cobalt.asp. 11 View changes from previous version. (Word count: 1539)
	Apr 9 2009, 10:55 PM EDT	TheresaDeJager	edit
Change: There were only format changes (bold, italics, etc.) in this version. See this version for details. (Word count: 1522)
	Apr 8 2009, 11:10 PM EDT	TheresaDeJager	edit
Change: There were only format changes (bold, italics, etc.) in this version. See this version for details. (Word count: 1522)
	Apr 8 2009, 11:09 PM EDT	TheresaDeJager	edit	1 image added 1 image deleted
Change: There were only format changes (bold, italics, etc.) in this version. See this version for details. (Word count: 1522)
	Apr 8 2009, 11:09 PM EDT	TheresaDeJager	edit	1 image added
Change: There were only format changes (bold, italics, etc.) in this version. See this version for details. (Word count: 1522)
	Apr 8 2009, 5:55 PM EDT	TheresaDeJager	edit
Change: There were only format changes (bold, italics, etc.) in this version. See this version for details. (Word count: 1522)
	Apr 8 2009, 5:40 PM EDT	TheresaDeJager	edit	1 image deleted
Change: There were only format changes (bold, italics, etc.) in this version. See this version for details. (Word count: 1522)
	Apr 7 2009, 12:31 PM EDT	JeremiahDonner	edit	25 words added
Change: brachytherapy sources are usually fabricated in the form of a wire that is encapsulated in a sheath of platinum iridium or stainless steel.(1) Cobalt-60 is used in many common industrial applications, such as in leveling devices and View changes from previous version. (Word count: 1522)
	Apr 7 2009, 12:13 PM EDT	JeremiahDonner	edit
Change: There were only format changes (bold, italics, etc.) in this version. See this version for details. (Word count: 1496)
	Apr 7 2009, 12:17 AM EDT	TheresaDeJager	edit
Change: There were only format changes (bold, italics, etc.) in this version. See this version for details. (Word count: 1496)
	Apr 7 2009, 12:16 AM EDT	TheresaDeJager	edit	96 words added 20 words deleted 1 image added 1 image deleted
Change: After entering a living mammal (such as a human), most of the 60Co gets excreted in feces. A small amount is absorbed by liver, kidneys, and bones, where the prolonged exposure to gamma radiation can cause cancer. (11)Gastrointestinal absorption from food or water View changes from previous version. (Word count: 1496)
	Apr 7 2009, 12:08 AM EDT	TheresaDeJager	edit	11 words added 4 images added 4 images deleted
Change: Accessed on April 4, 2009.9. Cobalt -60. Human Health Fact Sheet. Available at http://www.ead.anl.gov/pub/doc/Cobalt.pdf. Accessed on April 4, 2009. 10. Martinez, Orton, and Mould. Brachytherapy HDR and LDR. Colombia: Nucletron Corporation; 1990. p. 138-142.11. Wikipedia. Co-60. Available at: Group Colors:Theresa. Brandie, Christy, View changes from previous version. (Word count: 1414)
	Apr 7 2009, 12:00 AM EDT	TheresaDeJager	edit	41 words added 2 words deleted
Change: *Due to the high gamma ray energy (1.25 Mev), there is an increased need for room and source shielding requirements.(6) Half-life Properties: Half Life: 5.26 yr (1,6)Biological: 0.5 day (transfer compartment), 6 days (0.6 in all tissues), View changes from previous version. (Word count: 1396)
	Apr 6 2009, 11:53 PM EDT	TheresaDeJager	edit	11 words added
Change: Produced by bombarding stable Co-59 with neutrons in a nuclear reactor.(6)The first source of Co-60 for medical use was produced in 1951 in Canada and was used by Johns and Coworkders in the first Co-60 teletherapy machine for external beam therapy in 1952. (3) Chemical/Radioactive Composition: A radioactive View changes from previous version. (Word count: 1356)
	Apr 6 2009, 11:48 PM EDT	TheresaDeJager	edit	4 words deleted
Change: *add example calculation here. Dose rate at Dmax = time x dose rate (ref) x area factor (3) Uses in Radiation Oncology: Co-60 is used medically for radiation therapy as implants and as an external source of radiation exposure. (2)Co-60 is used at a View changes from previous version. (Word count: 1343)
	Apr 5 2009, 6:50 PM EDT	JeremiahDonner	edit	68 words added
Change: The NRC requires that, for Afterloading HDR units, the reproducibility of the source positioning be checked each day of use with a precision of 1mm. To ensure this precision, you may use a television system along with a transparent jig to visually View changes from previous version. (Word count: 1347)
	Apr 4 2009, 1:50 PM EDT	cchambers	edit	149 words added
Change: Co-60 is used at a medical tracer. A medical tracer is a material that is introduced into the body to make possible the observation of chemical, physical or biological processes in the body, (8)Total Body Irradiation:Gamma Knife Radiosurgery: gamma knife device contains View changes from previous version. (Word count: 1278)
	Apr 4 2009, 12:49 PM EDT	cchambers	edit	182 words added 1 word deleted
Change: Cobalt-60 is used in many common industrial applications, such as in leveling devices and thickness gauges, and in radiotherapy in hospitals. Large sources of cobalt-60 View changes from previous version. (Word count: 1100)
	Apr 4 2009, 11:34 AM EDT	warfel.bran	edit	1 word added
Change: 536.4. Wikipedia. Gamma knife. Available at: http://en.wikipedia.org/wiki/Gamma_knife. Accessed: 12 March 2009.5. Cobalt. Answers.com. Available at: http://www.answers.com/topic/cobalt. Accessed: 12 March 2009.6. "Session: 7.06 – Sources for Remote Afterloading Devices. Stanford Web-Based Dosimetry Training Tool. http://www.dosimetrytrainingtool.com. Accessed: 8 March 2009.Group Colors:Theresa. Brandie View changes from previous version. (Word count: 907)