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EJLC Masters Thesis - Draft 6.pdf (1.6 MB)

ETD Abstract Container

Abstract Header

Use of ClearView Gel Dosimeter for Quality Assurance and Testing of Stereotactic Radiosurgery

Courter, Erik Joseph-Leonard
http://rave.ohiolink.edu/etdc/view?acc_num=wright1466417256

Abstract Details

2016, Master of Science (MS), Wright State University, Physics.
There exists a lack of accurate, reproducible three-dimensional dosimetry techniques for stereotactic radiosurgery (SRS) commissioning and quality assurance. This experiment evaluates the use of ClearView gel dosimeters as an alternative to current methods for small field dosimetry in SRS testing. ClearView differs from other gel dosimeters in that it uses tetrazolium salt in its chemical make-up in place of traditional Fricke-type compounds. Using a Varian TrueBeam radiotherapy system to deliver the radiation, three vials of ClearView gel dosimeter were tested in three different dose delivery scenarios. The first test examined the dosimeter’s response to a static beam with the dose isocenter targeted to the centroid of the vial. The second evaluation consisted of a full rotational SRS delivery about the center of the dosimeter. Lastly, a complete end-to-end treatment plan was performed to evaluate the accuracy of the dosimeter in a full SRS procedure. The three dosimeters were then scanned to measure the dose distribution throughout the gel. Finally, the resulting data was compared to the initial treatment plan to determine the accuracy of the gel. According to the comparisons performed, the ClearView gel showed capability of sub-millimeter spatial accuracy across the three evaluations, with a maximum geometric uncertainty of 1.2 mm. Based on these results, ClearView gel shows promise for possible use in SRS dosimetry applications in clinical settings.
Michael Gossman, M.S., DABR, FAAPM (Advisor)
Brent Foy, Ph.D. (Advisor)
Thomas Skinner, Ph.D. (Committee Member)
69 p.
Physics
ClearView; gel dosimeter; stereotactic radiosurgery; SRS; quality assurance; small field dosimetry

Recommended Citations

Citations

  • Courter, E. J.-L. (2016). Use of ClearView Gel Dosimeter for Quality Assurance and Testing of Stereotactic Radiosurgery [Master's thesis, Wright State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=wright1466417256

    APA Style (7th edition)

  • Courter, Erik. Use of ClearView Gel Dosimeter for Quality Assurance and Testing of Stereotactic Radiosurgery. 2016. Wright State University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=wright1466417256.

    MLA Style (8th edition)

  • Courter, Erik. "Use of ClearView Gel Dosimeter for Quality Assurance and Testing of Stereotactic Radiosurgery." Master's thesis, Wright State University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=wright1466417256

    Chicago Manual of Style (17th edition)

wright1466417256
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© 2016, all rights reserved.
This open access ETD is published by Wright State University and OhioLINK.