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Seed coordinates of a new COMS‐like 24 mm plaque verified using the FARO Edge

Cutsinger, Sarah E. McCauley et al.

Journal of applied clinical medical physics. Volume 16:Number 6 (2015); pp 293-301 -- Wiley on behalf of American Association of Physicists in Medicine

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  • Title:
    Seed coordinates of a new COMS‐like 24 mm plaque verified using the FARO Edge
  • Author: Cutsinger, Sarah E. McCauley;
    Furutani, Keith M.;
    Forsman, Renae M.;
    Corner, Stephen M.
  • Found In: Journal of applied clinical medical physics. Volume 16:Number 6 (2015); pp 293-301
  • Journal Title: Journal of applied clinical medical physics
  • Subjects: Clinical Medicine; Health Physics; Periodicals; Clinical medicine--Periodicals; Electronic journals; Medical physics--Periodicals; eye plaque brachytherapy--episcleral plaque--COMS; Fulltext; Internet Resources; Dewey: 610.153
  • Rights: legaldeposit
  • Publication Details: Wiley on behalf of American Association of Physicists in Medicine
  • Abstract: Abstract :

    A 24 mm COMS‐like eye plaque was developed to meet the treatment needs of our eye plaque brachytherapy practice. As part of commissioning, it was necessary to determine the new plaque's seed coordinates. The FARO Edge, a commercially available measurement arm, was chosen for this purpose. In order to validate the FARO Edge method, it was first used to measure the seed marker coordinates in the silastic molds for the standard 10, 18, and 20 mm COMS plaques, and the results were compared with the standard published Task Group 129 coordinates by a nonlinear least squares match in MATLAB version R2013a. All measured coordinates were within 0.60 mm, and root mean square deviation was 0.12, 0.23, and 0.35 mm for the 10, 18, and 20 mm molds, respectively. The FARO Edge was then used to measure the seed marker locations in the new 24 mm silastic mold. Those values were compared to the manufacturing specification coordinates and were found to demonstrate good agreement, with a maximum deviation of 0.56 mm and a root mean square deviation of 0.37 mm. The FARO Edge is deemed to be a reliable method for determining seed coordinates for COMS silastics, and the seed coordinates for the new 24 mm plaque are presented.

    PACS number: 87.53.Jw


  • Identifier: System Number: LDEAvdc_100046224972.0x000001; Journal ISSN: 1526-9914; 10.1120/jacmp.v16i6.5721
  • Publication Date: 2015
  • Physical Description: Electronic
  • Shelfmark(s): ELD Digital store

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