Palmans, H (2025) Detectors, Relative Dosimetry, and Microdosimetry. In: Proton Therapy Physics. CRC Press, Boca Raton, pp. 162-187. ISBN 9781032616858

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Abstract

This chapter reviews the detector requirements for relative dosimetry in clinical proton beams including those for profile measurements, depth– dose distributions, and field output factors. Specific discussion is given on the particularities of small fields used in scanned beams and stereotactic radiosurgery. Apart from the choice of detector size, related to achieving sufficient spatial resolution, the main issues which are discussed are related to the water – equivalence and the energy -dependent response of many detector systems, an important property to consider in proton beam dosimetry, and the use of plastic phantoms for relative dosimetry. An overview of the specific behavior of a number of suitable detectors is given and their application is illustrated in a few examples. Finally, a brief introduction to microdosimetry is given and the requirements on microdosimeters and the various principles to establish lineal energy measurements are discussed.

Item Type:	Book Chapter/Section
Keywords:	Proton therapy, relative dosimetry, detectors, microdosimetry, spatial resolution, energy dependence, lateral profiles, depth dose, output factors, frame factors, end-to-end test
Subjects:	Ionising Radiation > Dosimetry
Divisions:	Medical, Marine & Nuclear
Publisher:	CRC Press
Identification number/DOI:	10.1201/9781032616858-11
Last Modified:	14 May 2026 13:56
URI:	https://eprintspublications.npl.co.uk/id/eprint/10393