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The influence of applicator angle on dosimetry in vaginal vault brachytherapy

P J Hoskin, MD, FRCP, FRCR P Bownes, MSc and A Summers, BSc

Mount Vernon Centre for Cancer Treatment, Mount Vernon Hospital, Rickmansworth Road, Northwood, Middlesex HA6 2RN, UK



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Figure 1. Measurement and dosimetry points with the vaginal cylinder (a) at the natural angle and (b) at the corrected horizontal position. A, angle of applicator; B, bladder dosimetry point; C, rectal dosimetry point; D, additional bowel dosimetry point at closest measured barium-containing bowel position to source.

 


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Figure 2. Effect of vaginal applicator angle on isodose distribution (a) at the natural angle and (b) at the corrected horizontal position.

 





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