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Measurement of kilovoltage by the penetrameter-theoretical aspects (X-ray generators)

W Jackson

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The penetrameter method makes use of the attenuation in copper of a heavily filtered X-ray beam to predict the generating kVp. This is derived from the matching step or copper reference number (CRN) of a film density matching process in which a fast and slow screen combination is employed. In the present work, theoretical spectra resulting from chosen representative kV and mA wave-forms have been derived by computer analysis, assuming Kramers expression for the bremsstrahlung emission from a thick target. The CRN appropriate to each spectrum has been found and its relation to kVp recorded.


PACS

87.56.Da Ancillary equipment

06.20.fb Standards and calibration

Subjects

Instrumentation and measurement

Medical physics

Dates

Issue 2 (March 1975)



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