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http://nopr.niscpr.res.in/handle/123456789/25353| Title: | Measurement of half-life of iridium-192 (HDR brachytherapy)by clinical dosimeters |
| Authors: | Kumar, Alok Singh, Sudama |
| Issue Date: | Feb-2002 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | Iridium-192 is a very common radioisotope, used in the treatment of the cancer patients worldwide. Usually the treatment is performed by brachytherapy, with remote afterloader machine of high dose rate (HDR). Half-life of iridium -192 varies from 73.83 to 74.2 days. In clinical practice, the calibration of iridium-192 is performed by clinical dosimeters. The authors used clinical dosimeters of 0.6 cc graphite thimble chamber with calibration jig and a re-entrant/well-type chamber to perform comprehensive measurements of half-life of iridium-192. There were six different iridium-192 radioisotopes taken one by one up to their clinical lifetime for measurement on routine basis. It was found that each individual iridium-192 source has a single decay constant and half-life ranging from 73.81 to 73.84 days with a mean value of 73.825 days. The standard deviation was found to be± 0.0084. |
| Page(s): | 137-140 |
| ISSN: | 0975-1041 (Online); 0019-5596 (Print) |
| Appears in Collections: | IJPAP Vol.40(02) [February 2002] |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| IJPAP 40(2) 137-140.pdf | 733.83 kB | Adobe PDF | View/Open |
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