Absolute Dose Determination Under Reference Conditions

Authored by: Pedro Andreo , Alan Nahum

Handbook of Radiotherapy Physics

Print publication date:  June  2007
Online publication date:  June  2007

Print ISBN: 9780750308601
eBook ISBN: 9781420012026
Adobe ISBN:

10.1201/9781420012026.ch18

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Abstract

This chapter is concerned with the accurate determination of the absorbed dose in gray at the reference depth in a water phantom. This is sometimes known as calibrating the beam and is expressed in terms of a number of monitor units per gray for a given standard field size, Source to Surface Distance (SSD) and beam quality. For a better understanding of some of the concepts discussed in this chapter, the reader should consult Part E on the general characteristics of photon and electrons beams.

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