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Mar 25, 2015 - College of Medicine, The Catholic University of Korea, Seoul, Republic ... Two-dimensional (2D) detector arrays such as MapCHECK (SunNuclear, Melbourne,. FL, USA) and MatriXX (IBA Dosimetry, GmbH, Schwarzenbrook, ...

RESEARCH ARTICLE

Dosimetric Verification by Using the ArcCHECK System and 3DVH Software for Various Target Sizes Jin Ho Song1, Hun-Joo Shin2, Chul Seung Kay2, Seok Hyun Son2* 1 Department of Radiation Oncology, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea, 2 Department of Radiation Oncology, Incheon St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea * [email protected]

Abstract Objective To investigate the usefulness of the 3DVH software with an ArcCHECK 3D diode array detector in newly designed plans with various target sizes. OPEN ACCESS Citation: Song JH, Shin H-J, Kay CS, Son SH (2015) Dosimetric Verification by Using the ArcCHECK System and 3DVH Software for Various Target Sizes. PLoS ONE 10(3): e0119937. doi:10.1371/journal. pone.0119937 Received: June 24, 2014 Accepted: January 21, 2015 Published: March 25, 2015 Copyright: © 2015 Song et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Data Availability Statement: All relevant data are within the paper. Funding: The authors wish to acknowledge the financial support of the Catholic Medical Center Research Foundation made in the program year of 2011 (5-2011-B0001-00196). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. Competing Interests: The authors declare that they have no competing interests.

Methods The isocenter dose was measured with an ion-chamber and was compared with the planned and 3DVH predicted doses. The 2D gamma passing rates were evaluated at the diode level by using the ArcCHECK detector. The 3D gamma passing rates for specific regions of interest (ROIs) were also evaluated by using the 3DVH software. Several dose-volume histograms (DVH)-based predicted metrics for all structures were also obtained by using the 3DVH software.

Results The isocenter dose deviation was