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Simulation Design of a Single-Ring OpenPET for In-Beam PET
https://repo.qst.go.jp/records/70602
https://repo.qst.go.jp/records/706020d05c764-e632-4ab5-bc36-2138a64a2c8b
| Item type | 会議発表用資料 / Presentation(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2011-11-02 | |||||
| タイトル | ||||||
| タイトル | Simulation Design of a Single-Ring OpenPET for In-Beam PET | |||||
| 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 |
Kinouchi, Shoko
× Kinouchi, Shoko× Yamaya, Taiga× Tashima, Hideaki× Yoshida, Eiji× Nishikido, Fumihiko× Haneishi, Hideaki× Suga, Mikio× 木内 尚子× 山谷 泰賀× 田島 英朗× 吉田 英治× 錦戸 文彦× 羽石 秀昭× 菅 幹生 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | One of the challenging applications of PET is for in-beam PET, which is an in situ monitoring method for charged particle therapy. For this purpose, we have previously proposed an open-type PET scanner, OpenPET. The original OpenPET has a physically opened field-of-view (FOV) between two detector rings which irradiation beams pass through. This dual-ring OpenPET has a wide axial FOV including the gap. Therefore this geometry is not necessarily efficient when it is applied to in-beam PET in which only a limited FOV around the irradiation field is required. In this paper, we proposed a new single-ring OpenPET geometry as more efficient geometry dedicated to in-beam PET. The detector ring of the proposed geometry is a cylinder both ends of which are cut by parallel aslant planes. The proposed geometry can be made compact so that the beam port can be placed close to the patient. One of the problems for the proposed geometry is arranging the rectangular block detectors. We proposed two arrangement types, a slanted ellipse type where oval detector rings are slanted and stacked and an axial shift type where block detectors originally forming a conventional PET scanner are axially shifted little by little. We compared the two types through numerical simulations. The simulated system was a small prototype that we designed for a proof-of-concept. The system was designed with 2 detector rings of 16 block detectors. We supposed the detector had 4-layer depth-of-iteration capability. In the simulations, both types resulted in acceptable image quality. The simulated system was a small one, where the size of the block detectors was relatively large. Therefore quality of reconstructed images was slightly degraded for the axial shift type, because the edge of the detector ring had a notched structure. Our next plan is the simulation design of the human-sized geometry for the single-ring OpenPET. |
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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 | IEEE 2011 NSS MIC RTSD | |||||
| 発表年月日 | ||||||
| 日付 | 2011-10-29 | |||||
| 日付タイプ | Issued | |||||
