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Pulmonary volumes a...
Pulmonary volumes and signs of chronic airflow limitation in quantitative computed tomography
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- Bäcklin, Emelie (författare)
- Karolinska Institutet,KTH,Medicinsk avbildning,Department of Clinical Science, Intervention & Technology Karolinska Institutet Stockholm Sweden; Department of Biomedical Engineering Karolinska University Hospital Stockholm Sweden,Medical image processing
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- Gonon, Adrian (författare)
- Karolinska Institutet,Department of Clinical Science, Intervention & Technology Karolinska Institutet Stockholm Sweden;Department of Clinical Physiology Karolinska University Hospital Stockholm Sweden
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- Sköld, Magnus (författare)
- Karolinska Institutet,Department of Medicine Solna Karolinska Institutet Stockholm Sweden;Department of Respiratory Medicine and Allergy Karolinska University Hospital Stockholm Sweden
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- Smedby, Örjan, Professor, 1956- (författare)
- KTH,Medicinsk avbildning,Smedby
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- Breznik, Eva (författare)
- KTH,Medicinsk avbildning,Smedby
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- Janerot Sjöberg, Birgitta (författare)
- Karolinska Institutet,Department of Clinical Science, Intervention & Technology Karolinska Institutet Stockholm Sweden;Department of Clinical Physiology Karolinska University Hospital Stockholm Sweden
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(creator_code:org_t)
- Wiley, 2024
- 2024
- Engelska.
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Ingår i: Clinical Physiology and Functional Imaging. - : Wiley. - 1475-0961 .- 1475-097X. ; 44:4, s. 340-348
- Relaterad länk:
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https://doi.org/10.1...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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http://kipublication...
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Abstract
Ämnesord
Stäng
- BackgroundComputed tomography (CT) offers pulmonary volumetric quantification but is not commonly used in healthy individuals due to radiation concerns. Chronic airflow limitation (CAL) is one of the diagnostic criteria for chronic obstructive pulmonary disease (COPD), where early diagnosis is important. Our aim was to present reference values for chest CT volumetric and radiodensity measurements and explore their potential in detecting early signs of CAL.MethodsFrom the population-based Swedish CArdioPulmonarybioImage Study (SCAPIS), 294 participants aged 50–64, were categorized into non-CAL (n = 258) and CAL (n = 36) groups based on spirometry. From inspiratory and expiratory CT images we compared lung volumes, mean lung density (MLD), percentage of low attenuation volume (LAV%) and LAV cluster volume between groups, and against reference values from static pulmonary function test (PFT).ResultsThe CAL group exhibited larger lung volumes, higher LAV%, increased LAV cluster volume and lower MLD compared to the non-CAL group. Lung volumes significantly deviated from PFT values. Expiratory measurements yielded more reliable results for identifying CAL compared to inspiratory. Using a cut-off value of 0.6 for expiratory LAV%, we achieved sensitivity, specificity and positive/negative predictive values of 72%, 85% and 40%/96%, respectively.ConclusionWe present volumetric reference values from inspiratory and expiratory chest CT images for a middle-aged healthy cohort. These results are not directly comparable to those from PFTs. Measures of MLD and LAV can be valuable in the evaluation of suspected CAL. Further validation and refinement are necessary to demonstrate its potential as a decision support tool for early detection of COPD.
Ämnesord
- MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin -- Radiologi och bildbehandling (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Clinical Medicine -- Radiology, Nuclear Medicine and Medical Imaging (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Medicinteknik -- Medicinsk bildbehandling (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Medical Engineering -- Medical Image Processing (hsv//eng)
Nyckelord
- medical image processing
- Teknik och hälsa
- Technology and Health
- Medicinsk teknologi
- Medical Technology
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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