Quality assurance procedures for the Peacock system

Cheng B. Saw, Komanduri M. Ayyangar, Weining Zhen, Robert B. Thompson, Charles A. Enke

Research output: Contribution to journalArticlepeer-review

10 Scopus citations


The Peacock system is the product of technological innovations that are changing the practice of radiotherapy. It uses dynamic beam modulation technique and inverse planning algorithm, both of which are new methodologies, to perform intensity-modulation radiation therapy (IMRT). The quality assurance (QA) procedure established by Task Group No. 40 did not adequately consider these emerging modalities. A review of literature indicates that published articles on QA procedures concentrate primarily on the verification of dose delivered to phantom during commissioning of the system and dose delivered to phantom before treating patients. Absolute dose measurements using ion chambers and relative dose measurements using film dosimetry have been used to verify delivered doses. QA on equipment performance and equipment safety is limited. This paper will discuss QA on equipment performance, equipment safety, and patient setup reproducibility.

Original languageEnglish (US)
Pages (from-to)83-90
Number of pages8
JournalMedical Dosimetry
Issue number1
StatePublished - 2001
Externally publishedYes


  • Dosimetry
  • IMRT
  • Photon beam
  • Quality assurance

ASJC Scopus subject areas

  • Radiological and Ultrasound Technology
  • Oncology
  • Radiology Nuclear Medicine and imaging


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