胸部X線動態撮影の再現性の検証–ピクセル値の呼吸性変化
Dynamic chest radiography using a flat panel detector (FPD) with a large field of view is expected to be a useful pulmonary functional evaluation method based on the respiratory changes in pixel value. For clinical use as a follow-up and therapeutic evaluation tool, the system must have a high degre...
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| Published in | 日本放射線技術学会雑誌 Vol. 65; no. 6; pp. 738 - 744 |
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| Main Authors | , , |
| Format | Journal Article |
| Language | Japanese |
| Published |
公益社団法人 日本放射線技術学会
2009
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| Subjects | |
| Online Access | Get full text |
| ISSN | 0369-4305 1881-4883 |
| DOI | 10.6009/jjrt.65.738 |
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| Abstract | Dynamic chest radiography using a flat panel detector (FPD) with a large field of view is expected to be a useful pulmonary functional evaluation method based on the respiratory changes in pixel value. For clinical use as a follow-up and therapeutic evaluation tool, the system must have a high degree of reproducibility in measurements of pixel values. The present study was performed to investigate the reproducibility of respiratory changes in pixel values. Dynamic chest radiographs of five normal subjects and one patient were obtained. Imaging was performed twice in each subject. The slope (X-ray translucency variation) was then calculated from the changes in pixel value from distance lung apex-diaphragm, and the slopes of two sequences were compared. The results showed there were no significant differences in changes in pixel value between the two sequences in all normal subject (5 males, p>0.05). The results indicated that the present method has reproducibility for measuring pulmonary function and also has potential as a tool for follow-up and therapeutic evaluation. |
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| AbstractList | Dynamic chest radiography using a flat panel detector (FPD) with a large field of view is expected to be a useful pulmonary functional evaluation method based on the respiratory changes in pixel value. For clinical use as a follow-up and therapeutic evaluation tool, the system must have a high degree of reproducibility in measurements of pixel values. The present study was performed to investigate the reproducibility of respiratory changes in pixel values. Dynamic chest radiographs of five normal subjects and one patient were obtained. Imaging was performed twice in each subject. The slope (X-ray translucency variation) was then calculated from the changes in pixel value from distance lung apex-diaphragm, and the slopes of two sequences were compared. The results showed there were no significant differences in changes in pixel value between the two sequences in all normal subject (5 males, p>0.05). The results indicated that the present method has reproducibility for measuring pulmonary function and also has potential as a tool for follow-up and therapeutic evaluation. |
| Author | 真田, 茂 川嶋, 広貴 田中, 利恵 |
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| Copyright | 2009 公益社団法人 日本放射線技術学会 |
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| References | 12) West JB. Ventilation–how gas gets to the alveoli. Respiratory Physiology–The Essentials. Lippincott Williams & Wilkins. Philadelphia, 2000: 11-19. 11）市原清志．7．回帰と相関．バイオサイエンスの統計学–正しく活用するための実践理論–．南江堂，東京，2001：218-219 2）大西英雄，松本政典，増田一孝．6・3 呼吸器系．放射線技術学シリーズ 核医学検査技術学 改訂 2 版．オーム社，東京，2005：213-220 4) Suga K, Tsukuda T, Awaya H, et al. Interactions of regional respiratory mechanics and pulmonary ventilatory impairment in pulmonary emphysema: assessment with dynamic MRI and xenon-133 single-photon emission CT. Chest 2000; 117 (6) : 1646-1655. 5) Ley-Zaporozhan J, Ley S, Kauczor HU. Morphological and functional imaging in COPD with CT and MRI: present and future. Eur Radiol 2008; 18 (3) : 510-521. 10）真田 茂，田中利恵，小林 健．フラットパネルディテクタを用いた胸部呼吸動態診断支援システムの開発．文部科学省科学研究費補助金特定領域研究「多次元医用画像の知的診断支援」第四回シンポジウム，東京，2007-1，特定領域研究「多次元医用画像の知的診断支援」総括班，「多次元医用画像の知的診断支援」第 4 回シンポジウム論文集；73-78 6）田中利恵，真田 茂，小林 健，他．胸部動態画像診断のためのX線撮像法の開発–撮影時の合図の出し方についての検討–．日放技学誌 2003；59（8）：984-992 8) Tanaka R, Sanada S, Okazaki N, et al. Evaluation of pulmonary function using breathing chest radiography with a dynamic flat panel detector: primary results in pulmonary diseases. Invest Radiol 2006; 41 (10) : 735-745. 1) National Vital Statistics Reports. National Center for Health Statistics. Maryland, Washington DC. 2002; 52: 1-48. 3) Johnson JL, Kramer SS, Mahboubi S. Air trapping in children: evaluation with dynamic lung densitometry with spiral CT. Radiology 1998; 206 (1) : 95-101. 9) Tanaka R, Sanada S, Suzuki M, et al. Breathing chest radiography using a dynamic flat-panel detector combined with computer analysis. Med Phys 2004: 31 (8) : 2254-2262. 7) Tanaka R, Sanada S, Okazaki N, et al. Detectability of regional lung ventilation with flat-panel detector-based dynamic radiography. J Digit Imaging 2008; 21 (1) : 109-120. |
| References_xml | – reference: 2）大西英雄，松本政典，増田一孝．6・3 呼吸器系．放射線技術学シリーズ 核医学検査技術学 改訂 2 版．オーム社，東京，2005：213-220． – reference: 6）田中利恵，真田 茂，小林 健，他．胸部動態画像診断のためのX線撮像法の開発–撮影時の合図の出し方についての検討–．日放技学誌 2003；59（8）：984-992． – reference: 3) Johnson JL, Kramer SS, Mahboubi S. Air trapping in children: evaluation with dynamic lung densitometry with spiral CT. Radiology 1998; 206 (1) : 95-101. – reference: 12) West JB. Ventilation–how gas gets to the alveoli. Respiratory Physiology–The Essentials. Lippincott Williams & Wilkins. Philadelphia, 2000: 11-19. – reference: 4) Suga K, Tsukuda T, Awaya H, et al. Interactions of regional respiratory mechanics and pulmonary ventilatory impairment in pulmonary emphysema: assessment with dynamic MRI and xenon-133 single-photon emission CT. Chest 2000; 117 (6) : 1646-1655. – reference: 11）市原清志．7．回帰と相関．バイオサイエンスの統計学–正しく活用するための実践理論–．南江堂，東京，2001：218-219． – reference: 5) Ley-Zaporozhan J, Ley S, Kauczor HU. Morphological and functional imaging in COPD with CT and MRI: present and future. Eur Radiol 2008; 18 (3) : 510-521. – reference: 1) National Vital Statistics Reports. National Center for Health Statistics. Maryland, Washington DC. 2002; 52: 1-48. – reference: 7) Tanaka R, Sanada S, Okazaki N, et al. Detectability of regional lung ventilation with flat-panel detector-based dynamic radiography. J Digit Imaging 2008; 21 (1) : 109-120. – reference: 8) Tanaka R, Sanada S, Okazaki N, et al. Evaluation of pulmonary function using breathing chest radiography with a dynamic flat panel detector: primary results in pulmonary diseases. Invest Radiol 2006; 41 (10) : 735-745. – reference: 9) Tanaka R, Sanada S, Suzuki M, et al. Breathing chest radiography using a dynamic flat-panel detector combined with computer analysis. Med Phys 2004: 31 (8) : 2254-2262. – reference: 10）真田 茂，田中利恵，小林 健．フラットパネルディテクタを用いた胸部呼吸動態診断支援システムの開発．文部科学省科学研究費補助金特定領域研究「多次元医用画像の知的診断支援」第四回シンポジウム，東京，2007-1，特定領域研究「多次元医用画像の知的診断支援」総括班，「多次元医用画像の知的診断支援」第 4 回シンポジウム論文集；73-78． |
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| Title | 胸部X線動態撮影の再現性の検証–ピクセル値の呼吸性変化 |
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