Department
Chemistry & Geosciences
Document Type
Article
Publication Date
2010
Abstract
We have measured the X-ray fluorescence from gadolinium as a function of concentration and position in tumors of different sizes and shapes in a head phantom. The gadolinium fluorescence was excited with a 36 GBq Am-241 source. The fluorescence signal was detected with a CdTe detector and a multi-channel analyzer. The fluorescence peak was clearly separated from the scattered X-rays. Concentrations of 5.62–78.63 mg/ml of Gd ion were used in 1, 2, and 3 cm diameter spherical tumors and a 2 9 4 cm oblate spheroid tumor. The data show trends approaching saturation for the highest concentrations, probably due to reabsorption in the tumor. A comparison of X-ray photographic imaging and densitometer measurements to determine concentration is also presented.
Recommended Citation
Almalki, Musaed; Majid, Samir Abdul; Butler, Philip H.; and Reinisch, Lou, "Gadolinium Concentration Analysis in Brain Phantom by X-ray Fluorescence" (2010). Research, Publications & Creative Work. 57.
https://digitalcommons.jsu.edu/fac_res/57
Publication/Presentation Information
Almalki, M. et al. (2010). Gadolinium concentration analysis in brain phantom by X-ray fluorescence. Australas Phys Eng Sci Med, 33:185-191. DOI: 10.1007/s13246-010-0020-x