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Diagnostic X-ray Intercomparison Results - January 2007

This document presents the findings from the IRMF/IPEM Diagnostic X-ray Intercomparison conducted in January 2007. It involves a collaborative effort among hospital medical physicists and clinical scientists, focusing on the evaluation of different radiations conditions for diagnostic X-ray equipment. Key parameters such as radiation beams, measurements using Keithley ion chambers, and various equipment like ion chambers and photodiodes were analyzed. Significant considerations include traceability of measurements, estimation of uncertainties, and the effects of generator waveforms on energy response.

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Diagnostic X-ray Intercomparison Results - January 2007

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  1. IRMF/IPEM Diagnostic X-ray Intercomparison Jan 2007 - Participants: Hospital Medical Physicists/Clinical Scientists QA Radiographers

  2. IEC 61267 Medical diagnostic x-ray equipment – radiation conditions for use in the determination of characteristics Uniform sets of radiation conditions RQR: Radiation beam emerging from x-ray set RQA: Radiation beam emerging from patient RQR-M Mammography x-ray beams Standard X-ray beams…..

  3. Compare beams?

  4. Tertiary standard (loaned by RRPPS): Keithley 15cc & 150cc ion chambers Likely equipment used by participants: ion chambers semiconductor photo diode (Pb backing) in combination with kV measuring capabilities (multimeter) Equipment

  5. Traceability? Ion chamber v photodiode? Estimation of uncertainty? Effects of generator/waveform? energy response? Results?

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