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首页> 外文期刊>Radiation Protection Dosimetry >MEASUREMENT OF THE CONTRALATERAL BREAST PHOTON AND THERMAL NEUTRON DOSES IN BREAST CANCER RADIOTHERAPY: A COMPARISON BETWEEN PHYSICAL AND DYNAMIC WEDGES
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MEASUREMENT OF THE CONTRALATERAL BREAST PHOTON AND THERMAL NEUTRON DOSES IN BREAST CANCER RADIOTHERAPY: A COMPARISON BETWEEN PHYSICAL AND DYNAMIC WEDGES

机译：乳腺癌放射治疗中对侧乳房光子和热中子剂量的测量：物理楔和动态楔的比较

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摘要

This research aimed to measure the received photon and thermal neutron doses to contralateral breast (CB) in breast cancer radiotherapy for various field sizes in presence of physical and dynamic wedges. The measurement of photon and thermal neutron doses was carried out on right breast region of RANDO phantom (as CB) for 18 MV photon beams. The dose measurements were performed by thermoluminescent dosimeter chips. These measurements obtained for various field sizes in presence of physical and dynamic wedges. The findings of this study showed that the received doses (both of the photon and thermal neutron) to CB in presence of physical wedge for 11 × 13,11 × 17 and 11 × 21 cm~2 field sizes were 5.92, 6.36 and 6.77% of the prescribed dose, respectively as well as for dynamic wedge were 2.92,4.63 and 5.60% of the prescribed dose, respectively. The results showed that the received photon and thermal neutron doses to CB increase with increment of field sizes. The received photon and thermal neutron doses to CB in presence of physical wedge were more than dynamic wedge. According to obtained findings, it is suggested that using a dynamic wedge is preferable than physical wedge, especially for medial tangential field.
机译：这项研究的目的是在存在物理和动态楔形的情况下，针对各种领域大小的乳腺癌放射疗法，测量对侧乳房（CB）接收到的光子和热中子剂量。在RANDO体模的右乳房区域（以CB形式）对18 MV光子束进行了光子和热中子剂量的测量。剂量测量是通过热发光剂量计芯片进行的。这些测量是在存在物理和动态楔形的情况下针对各种场大小获得的。这项研究的发现表明，在存在物理楔形的情况下，对于11×13,11×17和11×21 cm〜2场大小，CB接收到的CB剂量（光子和热中子）分别为5.92、6.36和6.77％处方剂量的和动态楔形的分别为处方剂量的2.92％，4.63％和5.60％。结果表明，接收到的CB的光子和热中子剂量随场大小的增加而增加。在存在物理楔形时，接收到的CB的光子和热中子剂量要大于动态楔形。根据获得的发现，建议使用动态楔形比物理楔形更可取，特别是对于内侧切向场而言。

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  • 来源
    《Radiation Protection Dosimetry》 |2018年第1期|73-81|共9页
  • 作者

    Hamed Bagheri; Seyed Rabie Mahdavi; Babak Shekarchi; Farhad Manouchehri; Bagher Farhood;

  • 作者单位

    Radiation and Wave Research Center, Aja University of Medical Science, Tehran, Iran;

    Department of Medical Physics, Iran University of Medical Sciences, Tehran, Iran;

    Radiation and Wave Research Center, Aja University of Medical Science, Tehran, Iran;

    Nuclear Science and Rechnology Research Institute (NSTRI), Tehran, Iran;

    Medical Physics and Medical Engineering Department, Faculty of Medicine, Tehran University of Medical Sciences, Tehran, Iran;

  • 收录信息 美国《科学引文索引》(SCI);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
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