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Tissue compensators with use of vinyl lead sheets for head and neck portals on 4‐MV x rays
Author(s) -
Jani Shirish K.,
Pennington Edward C.
Publication year - 1990
Publication title -
medical physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.473
H-Index - 180
eISSN - 2473-4209
pISSN - 0094-2405
DOI - 10.1118/1.596488
Subject(s) - head and neck , materials science , fabrication , dosimetry , optics , biomedical engineering , beam (structure) , nuclear medicine , medicine , surgery , physics , alternative medicine , pathology
Tissue compensators made with a high atomic number material are compact and retain the skin‐sparing effect of megavoltage beams. In this note, we have described the use of a commercially available vinyl lead as a material for tissue compensators for use with 4‐MV beams on a Clinac‐4/80. The dosimetric data obtained included the sheet's lead equivalence, thickness ratios, surface dose and buildup region, and transmission factors. The presence of a compensator did not alter the beam's skin‐sparing effects. It was concluded that the vinyl lead sheets allowed an easy and rapid fabrication of a tissue compensator for head and neck portals of up to 15×15 cm.