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http://dx.doi.org/10.7742/jksr.2014.8.5.217

Evaluation of Metal Artifact Reduction for Orthopedic Implants (O-MAR) on Radiotherapy Treatment Planning  

Won, Huisu (Department of International Radiological Science, Hallym University of Graduate Studies)
Hong, Joowan (Department of International Radiological Science, Hallym University of Graduate Studies)
Kim, Sunyoung (Department of International Radiological Science, Hallym University of Graduate Studies)
Choi, Jaehyock (Department of International Radiological Science, Hallym University of Graduate Studies)
Cho, Jaehwan (Department of International Radiological Science, Hallym University of Graduate Studies)
Yang, Hanjoon (Department of International Radiological Science, Hallym University of Graduate Studies)
Lee, Jin (Department of International Radiological Science, Hallym University of Graduate Studies)
Lee, Sunyeob (Department of International Radiological Science, Hallym University of Graduate Studies)
Park, Cheolsoo (Department of International Radiological Science, Hallym University of Graduate Studies)
Publication Information
Journal of the Korean Society of Radiology / v.8, no.5, 2014 , pp. 217-223 More about this Journal
Abstract
The aim of this study is evaluation of dose distribution on radiation therapy planning system with the CT image of high-density material inserted phantom. Gammex 467 Tissue Characterization Phantom is used to acquire an image similar to the human tissues and insert a Titanium to generate metal artifact. The acquired images were reconstructed with Metal Artifact Reduction for Orthopedic Implants (O-MAR). By using the treatment planning system, the volume was analyzed and dose distribution was extracted. Photon dose distribution in linear accelerator was measured by the $MapCHECK^{TM}$ and compared with planned and measured dose distributions. In result of the comparative analysis, when artifact is generated by Titanium, The volume applied O-MAR was increased 6.8% to BR-12 Breast and 40.2% to LV 1 Liver. After O-MAR was used, Dose distribution was higher 1.4 to 1.6% than before. Consequently, The artifact caused by metal objects should be removed if possible, and after that used in the radiotherapy treatment plan can be considered to reduce errors.
Keywords
O-MAR; Artifact; radiotherapy treatment plan; dose distribution;
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