Evaluation de l'impact d'un système CAD sur la performance des radiologues pour la détection des nodules pulmonaires sur des examens scanographiques multicoupes du thorax [Computer-aided detection of lung nodules on thin collimation MDCT: impact on radiologists' performance].

Details

Serval ID
serval:BIB_72DBFC96405F
Type
Article: article from journal or magazin.
Collection
Publications
Title
Evaluation de l'impact d'un système CAD sur la performance des radiologues pour la détection des nodules pulmonaires sur des examens scanographiques multicoupes du thorax [Computer-aided detection of lung nodules on thin collimation MDCT: impact on radiologists' performance].
Journal
Journal de Radiologie
Author(s)
Brochu B., Beigelman-Aubry C., Goldmard J.L., Raffy P., Grenier P.A., Lucidarme O.
ISSN
0221-0363 (Print)
ISSN-L
0221-0363
Publication state
Published
Issued date
2007
Volume
88
Number
4
Pages
573-578
Language
french
Abstract
OBJECTIVES: Evaluate the improvement in detecting lung nodules when using multidetector CT (MDCT) computer-assisted diagnosis (CAD). MATERIAL AND METHODS: Three radiologists (R1, R2, R3) with different levels of experience independently interpreted 30 MDCT examinations of the thorax taken for screening purposes, first without and then with CAD. The diagnosis was established by two of the three radiologists interpreting the images together, assisted by the CAD. RESULTS: The consensus reading identified 133 nodules, 61 (46%) of which were 4 mm or larger. The sensitivity values in the detection of nodules before and after using the CAD were 54% and 80% (R1), 38% and 71% (R2), and 70% and 88% (R3), respectively. When considering only the nodules that were 4 mm or larger, the sensitivity values varied before and after using the CAD, from 62% to 95% (R1), from 41% to 84% (R2), and from 74% to 92% (R3). By combining two by two the three radiologists' results obtained without the CAD, the sensitivity values were 65%, 83%, and 77%, respectively, for all the nodules, and 70%, 85%, and 77% for the nodules that were 4 mm or larger. The CAD induced a total of 105 false-positive results, with a mean of 3.5 per examination. CONCLUSION: The lung nodules missed by the radiologist can be detected if the CAD is used as a second reader. The CAD can be at least as beneficial as the use of a second independent reader.
Keywords
Adult, Aged, Diagnosis, Computer-Assisted, False Positive Reactions, Feasibility Studies, Female, Humans, Image Processing, Computer-Assisted/methods, Lung Neoplasms/radiography, Male, Mass Screening, Middle Aged, Observer Variation, Pilot Projects, Prospective Studies, Radiography, Thoracic, Radiology/standards, Sensitivity and Specificity, Smoking, Solitary Pulmonary Nodule/radiography, Tomography, Spiral Computed, Tomography, X-Ray Computed/methods
Pubmed
Create date
31/08/2011 12:46
Last modification date
20/08/2019 14:31
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