The preparation of in vivo lead x-ray fluorescence system using 99mTc

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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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)
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

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