| Computed Tomographic Imaging of the Airways in COPD and Asthma. | |
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MedLine Citation:
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PMID: 22009082 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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Computed tomography (CT) is the modality of choice for imaging the airways. Volumetric data sets with isotropic spatial resolution based on multidetector thin-section CT with overlapping reconstruction should be used. Chronic obstructive pulmonary disease and asthma are the 2 most common disease entities that are defined by airflow obstruction. The morphologic correlates of airway changes are dilation of the lumen, thickening of the wall, visibility of small airways due to mucus or edema, air trapping, hypoxic vasoconstriction, and collapsibility. To assess air trapping, additional expiratory low-dose scans are recommended. In clinical routine, these findings are visually assessed and should be routinely reported. However, the interobserver variability is high, and there is a clear need for objective software-based measurements. The development of such tools is challenging, and they are just becoming available on a broader scale. Novel techniques based on dual-energy CT aim to measure iodine distribution maps to assess pulmonary perfusion as well as the distribution of inhaled xenon gas to assess the distribution and time course of pulmonary ventilation. However, these techniques are still being investigated in clinical studies. This review will provide an overview of CT for the diagnosis of chronic obstructive pulmonary disease and asthma, its role in phenotyping these diseases, and the measurement of disease severity and functional compromise. |
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Authors:
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Hans-Ulrich Kauczor; Mark O Wielpütz; Michael Owsijewitsch; Julia Ley-Zaporozhan |
Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Journal of thoracic imaging Volume: 26 ISSN: 1536-0237 ISO Abbreviation: J Thorac Imaging Publication Date: 2011 Nov |
Date Detail:
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Created Date: 2011-10-19 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8606160 Medline TA: J Thorac Imaging Country: United States |
Other Details:
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Languages: eng Pagination: 290-300 Citation Subset: IM |
Affiliation:
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*Department of Diagnostic and Interventional Radiology, University Hospital Heidelberg, Heidelberg, Germany †Division of Cardiothoracic Imaging, Department of Medical Imaging, University of Toronto, Toronto, Canada. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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