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Timing Resolution Improvement using DOI Information in a Four-Layer Scintillation Detector for TOF-PET
https://repo.qst.go.jp/records/45238
https://repo.qst.go.jp/records/45238d16ec245-3d6f-4de3-9e03-cab2f58fb035
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2008-07-30 | |||||
| タイトル | ||||||
| タイトル | Timing Resolution Improvement using DOI Information in a Four-Layer Scintillation Detector for TOF-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_6501 | |||||
| 資源タイプ | journal article | |||||
| 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 |
Shibuya, Kengo
× Shibuya, Kengo× Nishikido, Fumihiko× Tsuda, Tomoaki× Kobayashi, Tetsuya× Lam, ChihFung× Yamaya, Taiga× Yoshida, Eiji× Inadama, Naoko× Murayama, Hideo× 澁谷 憲悟× 錦戸 文彦× 津田 倫明× 小林 哲哉× Ｌａｍ ＣｈｉｈＦｕｎｇ× 山谷 泰賀× 吉田 英治× 稲玉 直子× 村山 秀雄 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Depth-of-interaction (DOI) detectors are considered to be advantageous for time-of-flight positron emission tomography (TOF-PET) because they can correct timing errors arising in the scintillation crystals due to a propagation speed difference between annihilation radiation and scintillation photons. We experimentally measured this timing error, using our four-layer DOI encoding method. The upper layers exhibited the larger timing delays due to the longer path lengths after conversion from annihilation radiation into scintillation photons that traveled by zigzag paths at a speed decreased by a factor of the refractive index (n). The maximum timing delay between the uppermost and the lowermost layers was evaluated as 164 ps when n=1.47. A TOF error correction was demonstrated to improve the timing resolution of the four-layer DOI detector by 10.3%, which would increase the effective sensitivity of the scanner by about 12% comparison with a non-DOI TOF-PET scanner. This is the first step towards combining these two important fields in PET instrumentation, namely DOI and TOF, for the purpose of achieving a higher sensitivity as well as a more uniform spatial resolution. | |||||
| 書誌情報 |
Nuclear Instruments & Methods in Physics Research Section A 巻 593, 号 3, p. 572-577, 発行日 2008-05 |
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| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 0168-9002 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1016/j.nima.2008.05.020 | |||||
