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SU-E-T-180: The Radiological Physics Center's Anthropomorphic Quality Assurance Phantom Program.

C Amador1, N Hernandez1, A Molineu1

  • 1UT MD Anderson Cancer Center, Houston, TX.

Medical Physics
|May 19, 2017
PubMed
Summary
This summary is machine-generated.

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The Radiological Physics Center (RPC) uses anthropomorphic phantoms for quality assurance (QA) in NCI-sponsored clinical trials. Their program effectively credentialed institutions, showing improved phantom acceptance rates in 2011.

Area of Science:

  • Medical Physics
  • Radiation Oncology
  • Clinical Trials Quality Assurance

Background:

  • The National Cancer Institute (NCI) requires quality assurance (QA) for institutions participating in advanced technology clinical trials.
  • The Radiological Physics Center (RPC) developed an anthropomorphic phantom program to facilitate this credentialing process.

Purpose of the Study:

  • To detail the phantoms, program logistics, and outcomes of the RPC's anthropomorphic QA phantom program.
  • To assess the program's effectiveness in credentialing institutions for NCI-sponsored clinical trials.

Main Methods:

  • Developed four anthropomorphic phantom designs (head & neck, pelvis, lung, spine) containing dosimeters.
  • Institutions receive, image, plan, treat, and return the phantom for analysis.
Keywords:
Data analysisDosimetryLungsMedical imagingQuality assuranceThermoluminescent dosimetersThin film structure

Related Experiment Videos

  • Measured dose distributions are compared against the institution's treatment plan dosimetry.

    • Main Results:

    • The RPC maintains an inventory of 4 different phantom types for national and international distribution.
    • In 2011, 444 phantoms were dispatched, with institutions returning them in an average of 26 days.
    • Acceptance rates for H&N, spine, and lung phantoms increased in 2011, while the pelvis phantom rate slightly decreased.

    Conclusions:

    • The RPC's QA phantom program is an effective and responsive tool for evaluating advanced technology use in NCI trials.
    • The program demonstrates efficiency in phantom distribution, analysis, and reporting.
    • The program supports the quality and consistency of radiation therapy in clinical trials.