18. The following are the spectra from the Mini-X device. Each figure shows a va

Question

18. The following are the spectra from the Mini-X device. Each figure shows a variation in some parameter of the machine. Answer the following questions about these three figures Note: Ag means "silver and W means "tungsten" The K-Shell binding energy for silver is 25.5 kev a) What was the parameter changed in Figure A? b) What was the parameter changed in Figure B? c) What was the parameter changed in Figure C? d) How much kVp was applied to Figure A?. Relative Output Spectra ini XAg Output Spectru W La Ag Ka Ae Ka 510152025303540455055 0 5 10 25 30 35 Energy (kel) Mins-x siveriAg Output Spectrum Ag Ka o15 20 s 44o Energy lkav

Explanation / Answer

A) in this spectra two sources are used . One is W i.e tungten sources and second one with Ag i.e silver source.

B) This figure shows the output spectrum of the Mini-X-Ag as unfiltered and filtered. In the unfiltered spectrum, a large fraction of brehmstrahlung counts are at low energy (between 5 and 20 keV), which are removed in the filtered spectrum.

C) Mini-X Silver (Ag) Output Spectrum at different voltages i.e. 10, 20, 30, 40 kV.

D) Mini-X relative output spectra of W and Ag at 40kV

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