| Detectability of lung nodules using flat panel detector with dual energy subtraction by two shot method: evaluation by ROC method. | |
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MedLine Citation:
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PMID: 17386991 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The aim of this study was to evaluate the effectiveness of dual-exposure dual energy subtraction technique in flat-panel chest radiography for lung nodules detection. Chest radiographs were acquired in 100 patients (57 men and 43 women; mean age, 60.2 years; range, 18-89 years) using a flat-panel digital chest system. These images were evaluated by seven radiologists. A continuous rating scale of 0-100 was used to represent each observer's confidence level regarding the presence or absence of lung nodules. Observer performance for detection of lung nodules with subtraction images was tested by using receiver operating characteristic (ROC) analysis of individual and averaged reader data. The average area under the ROC curve (Az value) significantly increased with subtraction images (Az=0.79 in standard radiographs versus Az=0.84 with subtraction images, p<0.05). In conclusion, the two-exposure dual-energy subtraction chest radiography significantly would improve detection of lung nodules. |
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Authors:
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Hiroyuki Tagashira; Kenji Arakawa; Masahiro Yoshimoto; Teruhito Mochizuki; Kenya Murase |
Publication Detail:
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Type: Journal Article Date: 2007-03-26 |
Journal Detail:
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Title: European journal of radiology Volume: 64 ISSN: 0720-048X ISO Abbreviation: Eur J Radiol Publication Date: 2007 Nov |
Date Detail:
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Created Date: 2007-10-23 Completed Date: 2008-01-24 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8106411 Medline TA: Eur J Radiol Country: Ireland |
Other Details:
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Languages: eng Pagination: 279-84 Citation Subset: IM |
Affiliation:
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Department of Medical Physics and Engineering, Graduate School of Medicine, Osaka University, 1-7 Yamadaoka, Suita, Osaka 565-0871, Japan. syourin@swallow.m.ehime-u.ac.jp |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adolescent Adult Aged Aged, 80 and over Area Under Curve Female Humans Image Processing, Computer-Assisted / methods Lung Diseases / radiography* Male Middle Aged Observer Variation ROC Curve Radiography, Dual-Energy Scanned Projection / instrumentation*, methods, statistics & numerical data Radiography, Thoracic / instrumentation*, methods, statistics & numerical data Tomography, X-Ray Computed / methods |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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