| Gray-Scale Reversal for the Detection of Pulmonary Nodules on a PACS Workstation. | |
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MedLine Citation:
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PMID: 22021501 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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OBJECTIVE: The purpose of this article is to evaluate the impact of gray-scale reversal on the detection of small pulmonary nodules in two-view chest radiography. MATERIALS AND METHODS: One hundred twenty-eight patients (mean age, 62 years) who underwent CT and chest radiography within 6 weeks were retrospectively selected for this study. Seventy-three percent of patients showed variable degrees of radiographic findings of a "dirty lung." A total of 129 solid pulmonary nodules were present in 74 patients (nodule diameter range, 5-30 mm; mean diameter, 13 mm). The remaining 54 patients served as negative control subjects. Six readers with varying experience levels evaluated the images without and with the availability of gray-scale reversal in two separate reading sessions. Figure of merit (FOM), sensitivity per lesion, mean number of false-positive marks per image, and accuracy were calculated. RESULTS: Five of the six readers showed a slight increase in sensitivity with the use of gray-scale reversal, but on average, the difference was not significant (48% vs 50%; p > 0.05). The mean number of false-positive marks per image also nonsignificantly increased from 0.20 to 0.23. The increases in both sensitivity and the mean number of false-positive marks per image translated into nonsignificant decreases in average FOM (0.79 vs 0.77) and accuracy (72% vs 71%). Data analysis of subgroups of nodules or different reader groups, depending on level of experience, did not reveal significant differences. CONCLUSION: Using PACS display of digital chest radiographs, gray-scale reversal does not help the radiologists in detecting pulmonary nodules. |
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Authors:
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Diederick W De Boo; Martin Uffmann; Shandra Bipat; Eelco F A Boorsma; Maeke J Scheerder; Michael Weber; Cornelia M Schaefer-Prokop |
Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: AJR. American journal of roentgenology Volume: 197 ISSN: 1546-3141 ISO Abbreviation: AJR Am J Roentgenol Publication Date: 2011 Nov |
Date Detail:
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Created Date: 2011-10-24 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7708173 Medline TA: AJR Am J Roentgenol Country: United States |
Other Details:
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Languages: eng Pagination: 1096-100 Citation Subset: AIM; IM |
Affiliation:
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Department of Radiology, Academic Medical Centre, Meibergdreef 9, Amsterdam 1105 AZ, The Netherlands. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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