Document Detail

High-resolution CT of the lung in asbestos-exposed subjects. Comparison of low-dose and high-dose HRCT.
MedLine Citation:
PMID:  8086257     Owner:  NLM     Status:  MEDLINE    
The lowest possible mAs settings for high-resolution CT (HRCT) were studied on 45 individuals with suspected asbestos-related lung disease. All patients were investigated with 5 to 6 high-dose HRCT images (120 kVp/160 mA/2 s) at 3-cm intervals. At a selected level 4 additional low-dose images were obtained on each patient with lower mAs settings (100 mA/2 s, 80 mA/2 s, 60 mA/2 s, 30 mA/2 s). Thirty-seven subjects out of 45 had HRCT lesions compatible with asbestosis. HRCT images obtained with as low as 60 mA/2 s settings clearly showed pleural tractions and thickenings, parenchymal bands, honeycombing and subpleural curvilinear shadows, whereas in the evaluation of subpleural short lines and ground glass findings 80 mA/2 s were required. The lowest setting, 30 mA/2 s, was sufficient only in detecting and evaluating pleural tractions and thickenings. We conclude that 160 mAs yield good quality HRCT images, with substantial decrease of radiation dose, for the evaluation of asbestos-related lesions.
M L Majurin; M Varpula; T Kurki; L Pakkala
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  Acta radiologica (Stockholm, Sweden : 1987)     Volume:  35     ISSN:  0284-1851     ISO Abbreviation:  Acta Radiol     Publication Date:  1994 Sep 
Date Detail:
Created Date:  1994-10-20     Completed Date:  1994-10-20     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8706123     Medline TA:  Acta Radiol     Country:  DENMARK    
Other Details:
Languages:  eng     Pagination:  473-7     Citation Subset:  IM    
Department of Diagnostic Radiology, Turku University Hospital, Finland.
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MeSH Terms
Aged, 80 and over
Asbestosis / radiography*
Bronchiectasis / radiography
Bronchitis / radiography
Chronic Disease
Cohort Studies
Image Processing, Computer-Assisted
Lung / radiography*
Middle Aged
Pleural Diseases / radiography
Pulmonary Emphysema / radiography
Radiation Dosage
Radiographic Image Enhancement / methods*
Tomography, X-Ray Computed / methods*
Tuberculosis, Pulmonary / radiography

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