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A prototype real-time dose distribution monitoring system using plastic scintillators connected to optical fiber for interventional radiology
https://repo.qst.go.jp/records/71360
https://repo.qst.go.jp/records/7136094b4517a-329d-40ac-9507-3f4ceb832760
| Item type | 会議発表用資料 / Presentation(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2013-11-14 | |||||
| タイトル | ||||||
| タイトル | A prototype real-time dose distribution monitoring system using plastic scintillators connected to optical fiber for interventional radiology | |||||
| 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 |
Nishikido, Fumihiko
× Nishikido, Fumihiko× Ito, Hiroshi× Yamaya, Taiga× 錦戸 文彦× 伊藤 浩× 山谷 泰賀 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Interventional radiology (IVR) is a medical subspecialty of radiology to realize image-guided surgical procedures using imaging modalities, such as X-ray fluoroscopy. Recently, monitoring of skin dose is desired at clinical sites to reduce skin injuries by excessive X-ray exposure during the IVR procedures. We proposed a real-time dose distribution monitoring system for IVR. Some scintillation detectors which consist of low stopping power materials, such as plastic scintillators, are placed on a stretchable cap which can be worn by the patient. Scintillation light is fed to photo detectors outside the FOV through plastic optical fibers. This arrangement means that there are only radiolucent materials in the FOV and the proposed dose monitor does not interfere with the IVR procedure. As a result, the proposed monitor realizes real-time monitoring of the dose distribution on the patient's skin. We are developing a prototype of the proposed system which consists of three X-ray detectors. Each X-ray detector consists of a square-shaped plastic scintillator (BC400), optical fiber and photodiode. Dimensions of the plastic scintillator are 10.0 mm x 10.0 mm x 1.0 mm. A corner of the plastic scintillator is cut and connected to the plastic optical fiber (Eska GH4001) which has a 1.0 mm diameter and 1.5 m length. The scintillation photons are transported to a silicon photodiode (S1337-66BQ, Hamamatsu Photonics K. K.) through the optical fiber Each photodiode output is independently fed to a current-to-voltage conversion amplifier and measured with a 16ch multi function DAQ (NI USB-6351, National instruments) and displayed in real-time by LabView-based software. We conducted evaluation experiments of detector performance with the micro CT apparatus operating in the projection mode. The experimental results indicated that the proposed dose monitoring system could measure real-time dose distribution with at least a 1 s interval. |
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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 | The 2013 IEEE Nuclear Science Symposium and Medical Imaging Conference, and Room-Temperature Semiconductor X-Ray and Gamma-Ray Detectors workshop | |||||
| 発表年月日 | ||||||
| 日付 | 2013-11-02 | |||||
| 日付タイプ | Issued | |||||
