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J Radiat Prot > Volume 36(3); 2011 > Article
Journal of Radiation Protection 2011;36(3):160-0.
광자극발광선량계와 이온함을 이용한 두경부 원발종양 및 림프절 전이성 종양의 선량 측정: 산란판과 볼루스의 비교
이정옥;이재승;정동혁;
Measurement of Tumor Dose Using Optically Stimulated Luminescence Detectors (OSLDs) and Ionization Chambers for Primary and Metastatic Lymph Node Cancers with Head and Neck: Comparison of Beam Spoiler and Bolus
Lee, Jeong-Ok;Lee, Jae-Seung;Jeong, Dong-Hyeok;
ABSTRACT
This study conducts cross-comparison through verification of treatment planning of using beam spoiler and bolus, according to the dose variation of different tumor bed and metastatic lymph node cancers, against ionization and optically stimulated luminescence detectors(OSLDs), in head and neck radiotherapy. Verification of treatment planning examined the feasibility of inserting detectors through simulated solid dry water slabs under identical irradiated conditions from treatment planning system to measure beam spoiler and 0.5, 1 cm bolus. In addition, two detectors were cross-compared for verification of treatment planning accuracy and reliability within ${pm}$2%. The study found that, given a beam spoiler thickness of 0.5 cm and beam spoiler-to-skin distance of 10 cm subjected to optimal dose distribution given for metastatic lymph node cancers, the bolus low-level skin dose was less, and the tumor bed dose reduced slightly. Additionally, two detectors were cross-compared for accuracy within ${pm}$1%. Accordingly, The use of beam spoiler was determined that reduces skin side effects and can deliver an optimal dose distribution for tumor, and to apply to future clinical studies should be performed.
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