Medical Dosimetry
Volume 22, Issue 3 , Pages 247-251, Autumn 1997

New application of enhanced dynamic wedge for tangent breast irradiation

  • Dennis D. Leavitt, Ph.D.

      Affiliations

    • Corresponding Author InformationReprint requests to: Dennis Leavitt, Ph.D., University of Utah School of Medicine, Department of Radiation Oncology, 50 North Medical Drive, Salt Lake City, UT 84132.

Department of Radiation Oncology, University of Utah School of Medicine, Salt Lake City, UT, USA

Abstract 

Dose uniformity within the treatment volume for tangent breast irradiation can be significantly improved through dynamic compensating collimation using all four independent jaws to define a superposition of sequentially reduced Enhanced dynamic wedge fields. The enhanced dynamic wedge angle is determined which optimizes dose uniformity in the central axis transverse plane, then the sequential reduction of the superior and inferior jaws is determined to optimize the sagittal dose uniformity. This technique could be applied under computer control through a record and verify system.

Keywords:  Enhanced dynamic wedge, Tangent breast irradiation

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PII: S0958-3947(97)00027-7

Medical Dosimetry
Volume 22, Issue 3 , Pages 247-251, Autumn 1997