Comparison of Various Image Guided Radiation Therapy Systems; Image-guided Localization Accuracy and Patient Throughput

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  • Takenaga Eriko
    Department of Radiological Technology, Kumamoto University Hospital
  • Nakaguchi Yuji
    Department of Radiological Technology, Kumamoto University Hospital
  • Maruyama Masato
    Department of Radiological Technology, Kumamoto University Hospital
  • Nagasue Nozomu
    Department of Radiological Technology, Kumamoto University Hospital
  • Kakei Kiyotaka
    Department of Radiological Technology, Kumamoto University Hospital
  • Kai Yudai
    Department of Radiological Technology, Kumamoto University Hospital
  • Kouno Tomohiro
    Graduate School of Health Sciences, Kumamoto University
  • Sasaki Motoharu
    Department of Radiological Technology, Tokushima University Hospital
  • Hashida Masahiro
    Department of Radiological Technology, Kumamoto University Hospital

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Other Title
  • Image Guided Radiation Therapy(IGRT)における位置補正精度と患者スループットの装置間比較
  • Image Guided Radiation Therapy(IGRT)ニ オケル イチ ホセイ セイド ト カンジャ スループット ノ ソウチ カン ヒカク

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In this study, we evaluated various image guided radiation therapy (IGRT) systems regarding accuracy and patient throughput for conventional radiation therapy. We compared between 2D-2D match (the collation by 2 X-rays directions), cone beam computed tomography (CBCT), and ExacTrac X-Ray system using phantom for CLINAC iX and Synergy. All systems were able to correct within almost 1 mm. ExacTrac X-Ray system showed in particular a high accuracy. As for patient throughput, ExacTrac X-Ray system was the fastest system and 2D-2D match for Synergy was the slowest. All systems have enough ability with regard to accuracy and patient throughput on clinical use. ExacTrac X-Ray system showed superiority with accuracy and throughput, but it is important to note that we have to choose the IGRT technique depending on the treatment site, the purpose, and the patient’s state.

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