1. Quantitative Emphysema Measurement On Ultra-High-Resolution CT Scans
- Author
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Xu Y, Yamashiro T, Moriya H, Muramatsu S, and Murayama S
- Subjects
Chronic obstructive pulmonary disease ,Computed tomography ,Emphysema ,Ultra-high-resolution CT ,Quantitative measurement ,Diseases of the respiratory system ,RC705-779 - Abstract
Yanyan Xu,1,2 Tsuneo Yamashiro,1,3 Hiroshi Moriya,3 Shun Muramatsu,3 Sadayuki Murayama1 1Department of Radiology, Graduate School of Medical Science, University of the Ryukyus, Okinawa, Japan; 2Department of Radiology, China-Japan Friendship Hospital, Beijing, People’s Republic of China; 3Department of Radiology, Ohara General Hospital, Fukushima, JapanCorrespondence: Tsuneo YamashiroDepartment of Radiology, Graduate School of Medical Science, University of the Ryukyus, 207 Uehara, Nishihara, Okinawa 903-0215, JapanTel +81-98-895-1162Fax +81-98-895-1420Email clatsune@yahoo.co.jpPurpose: To evaluate the advantages of ultra-high-resolution computed tomography (U-HRCT) scans for the quantitative measurement of emphysematous lesions over conventional HRCT scans.Materials and methods: This study included 32 smokers under routine clinical care who underwent chest CT performed by a U-HRCT scanner. Chronic obstructive pulmonary disease (COPD) was diagnosed in 13 of the 32 participants. Scan data were reconstructed by 2 different protocols: i) U-HRCT mode with a 1024×1024 matrix and 0.25-mm slice thickness and ii) conventional HRCT mode with a 512×512 matrix and 0.5-mm slice thickness. On both types of scans, lesions of emphysema were quantitatively assessed as percentage of low attenuation volume (LAV%,
- Published
- 2019