Amin, Yusoff Mohd and Mahat, R.H. and Loon, W.M. (2005) The preparation of in vivo lead x-ray fluorescence system using 99mTc. In: Osaka University-Asia Pacific Vietnam National Forum 2005 on Frontiers of Basic Science: Towards New Physics-Earth and Space Science Mathematics, 27-29 September 2005, Hanoi, Vietnam.
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Abstract
99mTc is widely used in hospital for nuc1ear medical examination such as scintigraphy of brain and thyroid. The gamma energy emitted by the 99mTc (140.50 keY) is used to produce X-ray fluorescence of the lead atoms present in bones. Being an internal source it is expected the fluorescence efficiency to increase. Using a surface barrier X-ray detection system, we have found the minimum detectable concentration (MDC), of lead in bone phantom, is 500 ppm using K-edge X-ray. The bone phantom consists of 10 ml polythene test-tube filled with saline solution and sodium (99mTc) pertechnetate of activity ranging from 7.4 III MBq. The counting time varies from 1-2 hour depending on the activity and lead concentration.
| Item Type: | Conference or Workshop Item (Paper) |
|---|---|
| Funders: | UNSPECIFIED |
| Additional Information: | Conference paper |
| Uncontrolled Keywords: | X-ray fluorescence system; Nuclear medical examination; Bone phantom; Minimum Detectable Concentration (MDC); Copper collimator |
| Subjects: | Q Science > Q Science (General) Q Science > QC Physics |
| Divisions: | Faculty of Science > Department of Physics |
| Depositing User: | Mr. Mohd Safri |
| Date Deposited: | 13 Jul 2020 01:02 |
| Last Modified: | 13 Jul 2020 01:02 |
| URI: | http://eprints.um.edu.my/id/eprint/25043 |
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