Journal of Medical Physics

Year
: 1999  |  Volume : 24  |  Issue : 2  |  Page : 44--46

Variation In Electron Output And Percentage Depth Dose In Presence Of Lead Cutouts In Mevatron-74


Lalit M Aggarwal1, Saji Oommen2, V O Parthiban3, Kamlesh Passi4, R Vashistha5, Singh Bhupinder6 
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Correspondence Address:
Lalit M Aggarwal


Electrons are widely used for the treatment of superficial malignant tumours. Radiation field is modified by placing the lead or Cerrobend cutouts on the application. For electrons, variation in output is not systematic with the increase or decrease in field size. In this paper, we have evaluated the variation in electron output, percentage depth dose and dmax for smaller fields with lead cutouts. It is observed that the relations give by various authors for predicting outputs for irregular fields did not agree with our data and variation of more than + 10% was found. So, we conclude that it is prudent to measure individualised output for irregularly shaped electron fields for calculating the tumour dose.


How to cite this article:
Aggarwal L, Oommen S, Parthiban V, Passi K, Vashistha R, Bhupinder S. Variation In Electron Output And Percentage Depth Dose In Presence Of Lead Cutouts In Mevatron-74.J Med Phys 1999;24:44-46


How to cite this URL:
Aggarwal L, Oommen S, Parthiban V, Passi K, Vashistha R, Bhupinder S. Variation In Electron Output And Percentage Depth Dose In Presence Of Lead Cutouts In Mevatron-74. J Med Phys [serial online] 1999 [cited 2021 Dec 1 ];24:44-46
Available from: https://www.jmp.org.in/article.asp?issn=0971-6203;year=1999;volume=24;issue=2;spage=44;epage=46;aulast=Aggarwal;type=0