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. Author manuscript; available in PMC: 2015 Oct 23.
Published in final edited form as: Health Phys. 2012 Oct;103(4):454–462. doi: 10.1097/hp.0b013e3182632526

Figure 4.

Figure 4

A) 2D intensity distributions relative to maximum net pixel value, B) Transverse profile across the field for the 1.5 cm field size defined using the lead shield for irradiator A. C) 2D intensity distributions relative to maximum net pixel value and, D) transverse profile across the field for the 4.0 cm field size defined using the lead shield for irradiator B. Note that the radiation field size is defined as the distance between the 50% relative intensity line (indicated by the arrows in Fig B and D).