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Development of Integrated Whole Body Counter
https://repo.qst.go.jp/records/68742
https://repo.qst.go.jp/records/687425c5873cc-547f-4ee7-9dcf-58829aef37a1
| Item type | 会議発表用資料 / Presentation(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2006-10-27 | |||||
| タイトル | ||||||
| タイトル | Development of Integrated Whole Body Counter | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_c94f | |||||
| 資源タイプ | conference object | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
Suzuki, Tosikazu
× Suzuki, Tosikazu× Nakano, Takashi× Eunjoo, Kim× 鈴木 敏和× 仲野 高志× 金 ウンジュ |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Instead of conventional human counter using 8inches by 4 inches NaI(Tl) scintillator which scanned from head to foot, integrated whole body counter was developed. This system is constituted by ten detectors which are located just above the aimed organ in order to improve the identification of nuclides. Two sets of p-type arrayed planar Ge detectors composed of two crystals are used for lungs and two sets of p-type high efficiency coaxial Ge detectors are used for intestine. Similarly, n-type coaxial detector is used for thyroid and the other p-types are used for skull, liver and gastric, respectively. These detectors are installed in a shielding chamber of 2.3m(height) x 3.0m(depth) x 2.2m(width). An electric cooling system by adiabatic expansion was adopted as cooling apparatus for all detectors with the object of asphyxia prevention and continuous operation. In case of lung measurement, the seat is set at a locus position to prevent a deformation of lungs. Except this, all measurements are performed at a decubitus position to reduce a burden of a patient. The diameter of Ge crystal for lung detector was decided to be 70mm to improve the detection efficiency of 17.1keV L-X rays from plutonium, and the thickness was also decided to be 20mm in order to depress the contribution of gamma radiation originated from potassium 40. Signals from detectors are analyzed into pulse-height distributions individually, then added to every energy. As for the efficiency calibration, JAERI phantom with new-designed tissue equivalent lungs which contain americium 241 homogeneously was applied to lung detector and BOMAB phantom regulated by ANSI was also applied to detectors for trunk. |
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| 会議概要（会議名, 開催地, 会期, 主催者等） | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | International workshop on internal dosimetry of radionuclides | |||||
| 発表年月日 | ||||||
| 日付 | 2006-10-05 | |||||
| 日付タイプ | Issued | |||||
