ID | 54976 |
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著者 |
Ogawa, Nanako
Department of Radiology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
Sato, Shuhei
Department of Radiology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
Kaken ID
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Ida, Kentaro
Department of Radiologic Diagnosis and Interventional Radiology, Fukuyama City Hospital
Kato, Katsuya
Department of Diagnostic Radiology, Kawasaki Hospital
Ariyoshi, Yuichi
Department of Urology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
Wada, Koichiro
Department of Urology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
Nasu, Yasutomo
Department of Urology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
Kaken ID
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抄録 | The aim of this study was to investigate the utility of single-source dual-energy computed tomography (SS-DECT) composition analysis in characterizing different types of urinary stones and differentiating them from phleboliths. This study included 29 patients with urinary stones who were scheduled for surgery. All patients were scanned, first using single-energy computed tomography acquisition and then DECT acquisition on SS-DECT. Dual-energy data were archived to a Gemstone spectral imaging (GSI) viewer (GE Healthcare, Milwaukee, WI, USA). Hounsfield units (HU) and effective atomic numbers (Zeff) were estimated using the GSI viewer. The results of dual-energy analysis were compared with the biochemical constitution of the stones. The chemical analysis determined that the stones included 32 calcium-based, 6 cystine and 1 struvite stone. Both HU and Zeff values were helpful in differentiating calcium-based stones from cystine and struvite stones and phleboliths. The Zeff values of phleboliths were significantly higher than those for struvite and cystine stones, whereas it was difficult to distinguish phleboliths from struvite and cystine stones using the HU values. Composition analysis using SS-DECT is helpful for distinguishing urinary stone types and discriminating phleboliths from urinary stones. Zeff values may be more useful than HU values for differentiating urinary stones from phleboliths.
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キーワード | single-source dual-energy computed tomography
effective atomic number
urinary stone
phlebolith
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Amo Type | Original Article
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出版物タイトル |
Acta Medica Okayama
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発行日 | 2017-04
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巻 | 71巻
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号 | 2号
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出版者 | Okayama University Medical School
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開始ページ | 91
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終了ページ | 96
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ISSN | 0386-300X
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NCID | AA00508441
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資料タイプ |
学術雑誌論文
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言語 |
英語
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著作権者 | CopyrightⒸ 2017 by Okayama University Medical School
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論文のバージョン | publisher
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査読 |
有り
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PubMed ID |