Change: I-192Ir-192Lost Iridium-192 SourceReferences:1. Human Health fact sheet: http://www.ead.anl.gov/pub/doc/Iridium.pdf2. Iridium-192. Available at: http://en.wikipedia.org/wiki/Iridium. Accessed March 17, 2009.3. Washington, C Leaver, D. Principles and Practice of Radiation Therapy. 2nd ed. St. Louis,MO: Mosby Inc;2004: p-324-3254. CDC. Radioisotope Brief:Iridium-192 (IR-192).   View changes from previous version. (Word count: 2435)

Change: CDC Radioisotope BriefCalibration of I-192Lost Iridium-192 SourceReferences:1. Human Health fact sheet: http://www.ead.anl.gov/pub/doc/Iridium.pdf2. Iridium-192. Available at: http://en.wikipedia.org/wiki/Iridium. Accessed March 17, 2009.3. Washington, C Leaver, D. Principles and Practice of Radiation Therapy. 2nd ed. St. Louis,MO: Mosby Inc;2004: p-324-3254. CDC. Radioisotope   View changes from previous version. (Word count: 2435)

Change: A type of calibration that can be performed is with a free-air ionization chamber. This type of chamber is also used for measuring soft x-rays.   View changes from previous version. (Word count: 2268)

Change: ~ 3 mm lead Measurement/Calibrations/QA: Used in formula/calculation: Uses in Radiation Oncology: Iridium-192 is used medically in brachytherapy to treat various types of cancer. (Brachytherapy is a method of radiation treatment in which sealed sources are used to deliver a radiation dose at a distance of up to a few   View changes from previous version. (Word count: 1936)

Change: A 60-year-old woman presented to the dermatologist with multicentric, purple–red nodules spreading widely over the parietal scalp. A bleeding ulcer was found in the center   View changes from previous version. (Word count: 1934)

Change: Iridium Source Ribbons containing Iridium-192 Relevant Historical Data: Iridium was discovered in 1803 by Smithson Tennant among insoluble impurities in natural platinum from South America. It is one of the rarest elements in the Earth's crust, with annual production and consumption of only three tonnes. However,   View changes from previous version. (Word count: 795)

Change:  clear the lungs quite rapidly.1Links:References:1. Human Health fact sheet: http://www.ead.anl.gov/pub/doc/Iridium.pdf2. Iridium-192. Available at: http://en.wikipedia.org/wiki/Iridium. Accessed March 17, 2009.3. Washington, C Leaver, D. Principles and Practice of Radiation Therapy. 2nd ed. St. Louis,MO: Mosby Inc;2004: p-324-325Color Code:Mat C.   View changes from previous version. (Word count: 789)

Change: head and breast. They are produced in wire form and are introduced through a catheter to the target area. After being left in place for the time required to deliver the desired dose, the implant wire is removed. Treatment Planning: One other interesting fact: Source : Neutron   View changes from previous version. (Word count: 408)