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Response function measurements of PET detector Xtal cube using a monolithic scintillator segmented by laser processing
https://repo.qst.go.jp/records/64339
https://repo.qst.go.jp/records/64339db701e3d-4018-4cee-9601-17917509ab34
| アイテムタイプ | 会議発表用資料 / Presentation(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2011-10-05 | |||||
| タイトル | ||||||
| タイトル | Response function measurements of PET detector Xtal cube using a monolithic scintillator segmented by laser processing | |||||
| 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 output | |||||
| 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 |
Yoshida, Eiji
× Yoshida, Eiji× et.al× 吉田 英治 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | We are developing a DOI-PET detector Xtal cube which detects scintillation photons from six sides of the crystal block. The Xtal cube is aimed at obtaining isotropic resolution by effective readout of scintillation photons. The Xtal cube is composed of 3D segmented cubic crystals and arrays of multi pixel photon counters (MPPCs). To fabricate the 3D scintillator array easily, we expect a sub-surface laser engraving (SSLE) technique instead of making a conventional segmented scintillation array. For this paper, we developed the Xtal cube using the SSLE technique and evaluated resolution performance of the Xtal cube. The 3D grids of 2mm pitch were fabricated into an 18x18x18mm3 monolithic LYSO crystal by the SSLE technique. 4x4 MPPCs were optically coupled to each surface of the 3D segmented LYSO. Each LYSO segment was identified on the 3D position histogram by Anger-type calculation from 96 channel MPPC signals. Response functions were measured by scanning a 22Na point source. The gamma ray beam was scanned in 0.25mm steps by positioning the Xtal cube in vertical and 45-degree directions. The average FWHM resolutions in both directions were 2.3mm. We showed that the Xtal cube maintained high spatial resolution even for an oblique irradiation angle. | |||||
| 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 6th Japan-Korean Joint Meeting on Medical Physics and 11th Asia-Oceania Congress of Medical Physics | |||||
| 発表年月日 | ||||||
| 日付 | 2011-10-01 | |||||
| 日付タイプ | Issued | |||||
