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Updated: May 23, 2026

Dosimetry for Cell Irradiation using Orthovoltage (40-300 kV) X-Ray Facilities

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Novel reference radiation fields for pulsed photon radiation installed at PTB.

J Klammer¹, J Roth, O Hupe

¹Physikalisch-Technische Bundesanstalt, Bundesallee 100, 38116 Braunschweig, Germany. jana.klammer@ptb.de

Radiation Protection Dosimetry

|April 12, 2012

Summary

New pulsed X-ray reference fields are now available for testing electronic dosemeters used by ~70% of occupationally exposed persons in Germany. This addresses critical deficits in active dosemeters operating in pulsed radiation fields.

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Area of Science:

Medical physics
Radiation protection
Metrology

Background:

~70% of occupationally exposed individuals in Germany work in pulsed radiation fields, primarily in medicine.
Active electronic dosemeters show significant performance issues or failure in pulsed radiation fields.
Current dosemeter type testing standards only cover continuous radiation.

Purpose of the Study:

To establish a reliable reference field for pulsed photon radiation.
To meet upcoming type test requirements for dosemeters in pulsed radiation environments.
To support research and development of accurate dosimetry in medical applications.

Main Methods:

Development of a novel X-ray reference field for pulsed photon radiation.
Collaboration between the Physikalisch-Technische Bundesanstalt and a manufacturer.
Comprehensive characterization of the developed reference field.

Main Results:

A well-characterized X-ray reference field for pulsed photon radiation has been established.
The new reference field is tailored to main applications within the medical sector.
The field is available for research and type testing of dosemeters.

Conclusions:

The developed pulsed X-ray reference field addresses a critical need in radiation dosimetry.
It enables accurate type testing and research for dosemeters in pulsed fields.
This advancement is crucial for ensuring radiation safety in medical applications.