| Low agreement of visual rating for detailed quantification of pulmonary emphysema in whole-lung CT. | |
| | |
MedLine Citation:
|
PMID: 22114019 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
|
BackgroundMultidetector spiral computed tomography (CT) has opened the possibility of quantitative evaluation of emphysema extent in the whole lung. Visual assessment can be used for such a purpose, but its reproducibility has not been established.PurposeTo assess agreement of detailed assessment of pulmonary emphysema on whole-lung CT using a visual scale.Material and MethodsThirty patients with chronic obstructive pulmonary disease underwent whole-lung inspiratory CT. Four chest radiologists rated the same 22 ± 2 thin sections using a visual scale which defines a range of emphysema extent between 0 and 100. Two of them repeated the rating two months later. Inter- and intra-operator agreement was evaluated with the Bland and Altman method. In addition, the percentage of emphysema at -950 Hounsfield units in the whole lung was determined using fully automated commercially available software for 3D densitometry.ResultsIn three of six operator pairs and in one of two intra-operator pairs the Kendall τ test showed a significant correlation between the difference and the average magnitude of visual scores. Among different operators the half-width of 95% limits of agreement (95% LoA) was wide ranging between a score of 14.2-27.7 for an average visual score of 20 and between 18.5-36.8 for an average visual score of 80. Within the same operator the half-width of 95% LoA ranged between a score of 10.9-21.0 for an average visual score of 20 and between 25.1-30.1 for an average visual score of 80. The visual scores of the four radiologists were correlated with the results of densitometry (P < 0.001; r = 0.65-0.81).ConclusionThe inter- and intra-operator agreement of detailed assessment of emphysema in the whole lung using a visual scale is low and decreases with increasing emphysema extent. |
| | |
Authors:
|
Mario Mascalchi; Stefano Diciotti; Nicola Sverzellati; Gianna Camiciottoli; Cesareo Ciccotosto; Fabio Falaschi; Maurizio Zompatori |
Related Documents
:
|
20946209 - Antral computerized tomography pre-operative evaluation: relationship between mucosal t... 17829299 - Capture resonance of the asteroid 1685 toro by the earth. 16964609 - Cephalic vascular anatomy in flamingos (phoenicopterus ruber) based on novel vascular i... 1903239 - Congenital nasal masses: ct and mr imaging features in 16 cases. 19669739 - Esthesioneuroblastoma methods of intracranial extension: ct and mr imaging findings. 11029239 - Delayed presentation of transorbital intracranial pen. 16677919 - Quantitative analyses of sonographic images of the parotid gland in patients with sjög... 17712869 - Enzyme-responsive paracest mri contrast agents: a new biomedical imaging approach for s... 11225219 - A preliminary trial of serratiopeptidase in patients with carpal tunnel syndrome. |
Publication Detail:
|
Type: JOURNAL ARTICLE Date: 2011-11-23 |
Journal Detail:
|
Title: Acta radiologica (Stockholm, Sweden : 1987) Volume: - ISSN: 1600-0455 ISO Abbreviation: - Publication Date: 2011 Nov |
Date Detail:
|
Created Date: 2011-11-24 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 8706123 Medline TA: Acta Radiol Country: - |
Other Details:
|
Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
|
Radiodiagnostic Section, Department of Clinical Physiopathology, University of Florence, Florence. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Evolution of CT pulmonary angiography: referral patterns and diagnostic yield in 2009 compared with ...
Next Document: Subtype differentiation of small renal cell carcinomas on three-phase MDCT: usefulness of the measur...