Journal of Medical Physics

Year
: 1993  |  Volume : 18  |  Issue : 2  |  Page : 16--19

Determination Of Exact Point Of Measurement And Surface Dose In An Electron Beam With Cylindrical Ion Chambers


Indra J Das1, Harry S Bushe2, John F Copeland3 
1 
2 
3 

Correspondence Address:
Indra J Das


Electron beam dosimetry with a cylindrical ion chamber has had associated with it an uncertainty about the effective point of measurement and difficulty in accurately measuring surface dose. Using two mathematical functions and data taken with a cylindrical ion chamber in air and a phantom, one can determine the effective point of measurement and surface dose for clinical electron beams. We found the effective point of measurement to be inversely related to beam energy. The method detailed here is simple, easy and accurate for the estimation of surface dose in a clinical setting.


How to cite this article:
Das I, Bushe H, Copeland J. Determination Of Exact Point Of Measurement And Surface Dose In An Electron Beam With Cylindrical Ion Chambers.J Med Phys 1993;18:16-19


How to cite this URL:
Das I, Bushe H, Copeland J. Determination Of Exact Point Of Measurement And Surface Dose In An Electron Beam With Cylindrical Ion Chambers. J Med Phys [serial online] 1993 [cited 2021 Sep 24 ];18:16-19
Available from: https://www.jmp.org.in/article.asp?issn=0971-6203;year=1993;volume=18;issue=2;spage=16;epage=19;aulast=Das;type=0