Change: Typically about 110 seeds are used but the number can vary between 80 -150 seeds. The seeds are inserted using thin each needles. Each needle holds 2 to 6 and the accuracy of the needle placement is monitored directly by transrectal ultrasound and fluoroscopy (x-ray). 17 One other interesting fact:   View changes from previous version. (Word count: 1412)

Change:  2009.14. Prostate Cancer Treatment Guide. Iodine-125 in Prostate Cancer Brachytherapy. Available at: http://www.prostate-cancer.com/prostate-cancer-glossary/iodine-125.html. Accessed on April 6, 2009.15. Ajronline.org. Iodine-125 Source in Interstitial Tumor Therapy. Available at: http://www.ajronline.org/cgi/reprint/123/1/163.pdf. Accessed on April 9, 2009.Color Codes:Purvi - OrangeAlia - GreenAngie - BlueTracey -Red   View changes from previous version. (Word count: 1249)

Change: There were only format changes (bold, italics, etc.) in this version. See this version for details. (Word count: 1212)

Change: at: http://www.dosimetrytrainingtool.com.13. InteractiveSNM.org. Iodine-125. Available at: http://interactive.snm.org/index.cfm?PageID=1107&RPID=10. Accessed on March 27, 2009.14. Prostate Cancer Treatment Guide. Iodine-125 in Prostate Cancer Brachytherapy. Available at: http://www.prostate-cancer.com/prostate-cancer-glossary/iodine-125.html.http://www.prostate-cancer.com/prostate-cancer-glossary/iodine-125.html. Accessed on April 6, 2009.Color Codes:Purvi - OrangeAlia - GreenAngie - BlueTracey -Red   View changes from previous version. (Word count: 1229)

Change: Iodine-125 Handling Precautions. Available at: http://las.perkinelmer.com/content/TechnicalInfo/TCH_Iodine125.pdf. Accessed April 7, 2009.4. Iodine-125. Available at: http://las.perkinelmer.com/content/TechnicalInfo/TCH_Iodine125.pdf. Accessed April 7, 2009.References:1. Wikipedia.com. Iodine-125. Available at: http://en.wikipedia.org/wiki/Iodine-125. Accessed on March 12, 2009.2. Khan, Faiz M. The Physics of Radiation Therapy. 3rd Edition. Philadelphia:   View changes from previous version. (Word count: 1229)

Change:  It decays-Decays by about 1.2% in one day. 3 Forms available for use: -Commercially available in dilute NaOH solution as [125I]iodide 1-Seeds 2 -Seed design contains a silver wire that is visible on radiographs, which helps show seed position as well as orientation.2-Sources are widely   View changes from previous version. (Word count: 1192)

Change: -used in permanent low dose radiation brachytherapy. Radioactive pellets filled with iodine are permanently implanted into the prostate cancer patient’s prostate gland. Iodine has a   View changes from previous version. (Word count: 1194)

Change: group.9 Critical organ of I-125 is the thyroid, it is the biological destination.14 Chemical/Radioactive Composition: Chemical symbol: I Atomic number (Z): 53Mass number (A): 125I-125 is produced in a nuclear reactor by bombarding Xe-124 with neutrons, which decays via electron capture to I-125.3Electron configuration: 1s2   View changes from previous version. (Word count: 1107)

Change: To isolate radioiodine capusule is cooled and Xe gas is allowed to escape.7 HVL in lead: 0.025 mm Pb 1 Measurement/Calibrations/QA: Air kerma strength standards are maintained for I-125 seeds. These standards are developed by performing   View changes from previous version. (Word count: 1075)

Change: -Organically bound I-125 solution injected into an inflatable balloon catheter (placed in the tumor cavity) is also being employed for treatment of brain tumors. 12 Treatment Planning: pre-planned or intraoperatively planned 5 Postplanning can also be done to envision the resultant dose distribution.11 Planning is much more   View changes from previous version. (Word count: 1012)