RADIATION PROTECTION MEASUREMENTS WITH THE VARIANCE-COVARIANCE METHOD IN THE STRAY RADIATION FIELDS FROM PHOTON AND PROTON THERAPY FACILITIES

Andersen, C. E. (author): Center for Nuclear Technologies, Technical University of Denmark, Roskilde, Denmark

Ardenfors, Oscar (author): Karolinska Institutet,Stockholms universitet,Fysikum,Medical Radiation Physics, Department of Physics, Stockholm University, Stockholm, Sweden

(creator_code:org_t)

2017-09-29
2018
English.
In: Radiation Protection Dosimetry. - : Oxford University Press (OUP). - 0144-8420 .- 1742-3406. ; 180:1-4, s. 338-341

Related links:: https://urn.kb.se/re...; show more...; https://doi.org/10.1...; https://urn.kb.se/re...; https://urn.kb.se/re...; http://kipublication...; show less...

Abstract Subject headings

The microdosimetric variance-covariance method was used to study the stray radiation fields from the photon therapy facility at the Technical University of Denmark and the scanned proton therapy beam at the Skandion Clinic in Uppsala, Sweden. Two TEPCs were used to determine the absorbed dose, the dose-average lineal energy, the dose-average quality factor and the dose equivalent. The neutron component measured by the detectors at the proton beam was studied through Monte Carlo simulations using the code MCNP6. In the photon beam the stray absorbed dose ranged between 0.3 and 2.4 mu Gy per monitor unit, and the dose equivalent between 0.4 and 9 mu Sv per monitor unit, depending on beam energy and measurement position. In the proton beam the stray absorbed dose ranged between 3 and 135 mu Gy per prescribed Gy, depending on detector position and primary proton energy.

By the author/editor: Lillhök, J.; Persson, L.; Andersen, C. E.; Dasu, Alexandru; Ardenfors, Oscar

About the subject

MEDICAL AND HEALTH SCIENCES: MEDICAL AND HEAL ...; and Clinical Medicin ...; and Radiology Nuclea ...

MEDICAL AND HEALTH SCIENCES: MEDICAL AND HEAL ...; and Clinical Medicin ...; and Cancer and Oncol ...

By the university: Stockholm University; Uppsala University; Linköping University; Karolinska Institutet

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