Orbital tumor irradiation using non-coplanar beams. Academic Article uri icon

Overview

abstract

  • Irradiation of the orbit is often associated with substantial dose inhomogeneity resulting from the insertion of lens blocks. We postulated that such dose inhomogeneity, which often exceeds 40%, could be halved by the use of two pairs of wedged beams, one angled in the sagittal plane and the other in the commonly employed transverse plane. The sagittal plane is obtained by turning the treatment couch 90 degrees. All beams carried a central-axis lens block and were angled 30 degrees relative to the vertical. Verification of dose distribution was obtained by film dosimetry in a head phantom for central- and off-axis planes. These measurements indicate that significant improvement in dose homogeneity over alternate methods can be achieved with this technique.

publication date

  • September 1, 1985

Research

keywords

  • Lymphoma
  • Orbital Neoplasms

Identity

Scopus Document Identifier

  • 0022240202

Digital Object Identifier (DOI)

  • 10.1148/radiology.156.3.4023250

PubMed ID

  • 4023250

Additional Document Info

volume

  • 156

issue

  • 3