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Elemental Mapping of Prostate Tissue by Micro-SRIXE

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Banaś A., Banaś K., Falkenberg G., Dyduch G., Kwiatek W.
Acta Physica Polonica A
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2006
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vol. 109
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issue 3
323-328
EN
Synchrotron radiation-induced X-ray emission is now a proven analytical method for the determination of trace elements. Better insight of the role of trace elements in tissue samples can be gained by acquiring complete distribution maps of these elements. Our approach is based on the acquisition of digital maps. In this contribution we present two different methods for obtaining normalization matrix: first - based on argon intensity in the single spectrum and second - based on changes of beam current intensity. The region for the scan was carefully chosen according to the histological view of the sample. A total area was scanned with a step size of 15 μm in each direction and measuring time of 30 s per pixel. The thickness of the samples was 15 μm. A polycapillary was used for beam focusing. At the energy of 18 keV the beam size on the sample was approximately 15 μm which is of the order of a cell diameter.
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Distinguishing Prostate Cancer from Hyperplasia

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Kwiatek W., Banaś A., Banaś K., Podgórczyk M., Dyduch G., Falkenberg G., Gajda M., Cichocki T.
Acta Physica Polonica A
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2006
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vol. 109
|
issue 3
377-381
EN
The prostate gland is the most common site of neoplastic disorders in men. The knowledge of the pathogenesis of benign prostate hyperplasia and prostate cancer is still under investigation. X-ray fluorescence analysis using synchrotron radiation seems to be an appropriate technique to study the elemental composition of biological tissues. The measurements presented in this paper were carried out on the L-beam line at the HASYLAB, DESY (Germany). The observed concentrations of Fe, Cu, Mn, and Zn are significantly higher in cancerous tissues, as compared to normal and hyperplastic ones. Our results reveal also the existence of the two types of hyperplasia.
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