Modelling the wedge shape for the virtual wedge

Liyun Chang, Sheng Yow Ho, Helen H.W. Chen

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


We present a method to model the virtual wedge shape in a 3D treatment planning system as a physical wedge. The virtual wedge shape was determined using the measured dose profile of the virtual wedge at a chosen reference depth. The differences between the calculated and the measured dose profiles for the virtual wedge were within 0.5% at the reference depth, and within 2.5% at other depths. This method provides a fast and accurate way to implement the virtual wedge into our planning system for any wedge angles. This method is also applicable to model the physical wedge shapes with comparable good results.

Original languageEnglish
Pages (from-to)1785-1794
Number of pages10
JournalPhysics in Medicine and Biology
Issue number12
Publication statusPublished - 2003 Jun 21

All Science Journal Classification (ASJC) codes

  • Radiological and Ultrasound Technology
  • Radiology Nuclear Medicine and imaging

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