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KMID : 0384620100210020127
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Korean Journal of Medical Physics
2010 Volume.21 No. 2 p.127 ~ p.136
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The Clinical Implementation of 2D Dose Distribution QA System for the Patient Specific Respiratory-gated Radiotherapy
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Kim Jin-Sung
Shin Eun-Hyuk
Shin Jung-Suk
Ju Sang-Gyu
Han Young-Yih
Park Hee-Chul
Choi Doo-Ho
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Abstract
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Emerging technologies such as four-dimensional computed tomography (4D CT) is expected to allow clinicians to accurately model interfractional motion and to quantitatively estimate internal target volumes (ITVs) for radiation therapy involving moving targets. A need exists for a 4D radiation therapy quality assurance (QA) device that can incorporate and analyze the patient specific intrafractional motion as it relate to dose delivery and respiratory gating. We built a 4D RT prototype device and analyzed the patient-specific 4D radiation therapy QA for 2D dose distributions successfully. With more improvements, the 4D RT QA prototype device could be an integral part of a 4D RT decision process to confirm the dose delivery.
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KEYWORD
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Respiratory-gated radiotherapy, Quality assurance, Dose distribution
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