<sup>201</sup>Tl心筋 SPECTにおける多焦点コリメータを用いた散乱・減弱補正と画像再構成条件の最適化
書誌事項
- タイトル別名
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- The Optimal Reconstruction Parameters by Scatter and Attenuation Corrections Using Multi-focus Collimator System in Thallium-201 Myocardial Perfusion SPECT Study
- 臨床技術 ²⁰¹Tl心筋SPECTにおける多焦点コリメータを用いた散乱・減弱補正と画像再構成条件の最適化
- リンショウ ギジュツ ² ⁰ ¹ Tl シンキン SPECT ニ オケル タショウテン コリメータ オ モチイタ サンラン ・ ゲン ジャク ホセイ ト ガゾウ サイコウセイ ジョウケン ノ サイテキ カ
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The aim of this study was to reveal the optimal reconstruction parameters of ordered subset conjugates gradient minimizer (OSCGM) by no correction (NC), attenuation correction (AC), and AC+scatter correction (ACSC) using IQ-single photon emission computed tomography (SPECT) system in thallium-201 myocardial perfusion SPECT. Myocardial phantom acquired two patterns, with or without defect. Myocardial images were performed 5-point scale visual score and quantitative evaluations using contrast, uptake, and uniformity about the subset and update (subset×iteration) of OSCGM and the full width at half maximum (FWHM) of Gaussian filter by three corrections. We decided on optimal reconstruction parameters of OSCGM by three corrections. The number of subsets to create suitable images were 3 or 5 for NC and AC, 2 or 3 for ACSC. The updates to create suitable images were 30 or 40 for NC, 40 or 60 for AC, and 30 for ACSC. Furthermore, the FWHM of Gaussian filters were 9.6 mm or 12 mm for NC and ACSC, 7.2 mm or 9.6 mm for AC. In conclusion, the following optimal reconstruction parameters of OSCGM were decided; NC: subset 5, iteration 8 and FWHM 9.6 mm, AC: subset 5, iteration 8 and FWHM 7.2 mm, ACSC: subset 3, iteration 10 and FWHM 9.6 mm.
収録刊行物
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- 日本放射線技術学会雑誌
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日本放射線技術学会雑誌 71 (11), 1103-1112, 2015
公益社団法人 日本放射線技術学会
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詳細情報 詳細情報について
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- CRID
- 1390001206362534144
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- NII論文ID
- 130005109946
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- NII書誌ID
- AN00197784
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- ISSN
- 18814883
- 03694305
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- NDL書誌ID
- 026954545
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- PubMed
- 26596202
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- Crossref
- PubMed
- CiNii Articles
- KAKEN
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- 使用不可