Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học 'Respiratory Research cung cấp cho các bạn kiến thức về ngành y đề tài: " Detection of emphysema progression in alpha. | Respiratory Research BioMed Central Research Detection of emphysema progression in alpha l-antitrypsin deficiency using CT densitometry Methodological advances David G Parr 1 Martin Sevenoaks2 ChunQin Deng3 Berend C Stoel4 and Robert A Stockley2 Open Access Address Department of Respiratory Medicine University Hospitals of Coventry and Warwickshire Clifford Bridge Road Coventry CV2 2DX UK 2Lung Investigation Unit University Hospital of Birmingham Edgbaston Birmingham B15 2TH UK 3Talecris Biotherapeutics Research Triangle Park NC 27709 USA and 4Division of Image Processing Department of Radiology Leiden University Medical Centre Leiden 2300-RC The Netherlands Email David G Parr - Martin Sevenoaks - ChunQin Berend C Stoel - Corresponding author Published 13 February 2008 Received 24 September 2007 Respiratory Research 2008 9 21 doi 1465-9921 -9-21 Accepted 13 February 2008 This article is available from http content 9 1 21 2008 Parr et al licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License http licenses by which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. Abstract_ Background Computer tomography CT densitometry is a potential tool for detecting the progression of emphysema but the optimum methodology is uncertain. The level of inspiration affects reproducibility but the ability to adjust for this variable is facilitated by whole lung scanning methods. However emphysema is frequently localised to sub-regions of the lung and targeted densitometric sampling may be more informative than whole lung assessment. Methods Emphysema progression over
