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Performance assessment of the Gulmay D3300 kilovoltage X-ray therapy unit

P A Evans, BSc, MSc, A J Moloney, BSc and P J Mountford, PhD, FIPEM

Medical Physics Directorate, North Staffordshire Hospital, Royal Infirmary, Princes Road, Hartshill, Stoke-on-Trent, Staffordshire ST4 7LN, UK



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  		Figure 1. Schematic diagram of applicator design and geometrical alignment testing. FSD, focus-to-surface distance.

 


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  		Figure 2. Focal spot alignment film.

 


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  		Figure 3. Beam profile example data. 250 kVp along (a) the anode–cathode axis and (b) the perpendicular axis; and 70 kVp along (c) the anode–cathode axis and (d) the perpendicular axis.

 




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