Title | ||
---|---|---|
True Detection Versus "Accidental" Detection of Small Lung Cancer by a Computer-Aided Detection (CAD) Program on Chest Radiographs |
Abstract | ||
---|---|---|
To evaluate the number of actual detections versus “accidental” detections by a computer-aided detection (CAD) system for
small nodular lung cancers (≤30 mm) on chest radiographs, using two different criteria for measuring performance. A Food-and-Drug-Administration-approved
CAD program (version 1.0; Riverain Medical) was applied to 34 chest radiographs with a “radiologist-missed” nodular cancer
and 36 radiographs with a radiologist-mentioned nodule (a newer version 3.0 was also applied to the 36-case database). The
marks applied by this CAD system consisted of 5-cm-diameter circles. A strict “nodule-in-center” criterion and a generous
“nodule-in-circle” criterion were compared as methods for the calculation of CAD sensitivity. The increased sensitivities
by the nodule-in-circle criterion were considered as nodules detected by chance. The number of false-positive (FP) marks was
also analyzed. For the 34 radiologist-missed cancers, the nodule-in-circle criterion caused eight more cancers (24%) to be
detected by chance, as compared to the nodule-in-center criterion, when using the version 1.0 results. For the 36 radiologist-mentioned
nodules, the nodule-in-circle criterion caused seven more lesions (19%) to be detected by chance, as compared to the nodule-in-center
criterion, when using the version 1.0 results, and three more lesions (8%) to be detected by chance when using the version
3.0 results. Version 1.0 yielded a mean of six FP marks per image, while version 3.0 yielded only three FP marks per image.
The specific criteria used to define true- and false-positive CAD detections can substantially influence the apparent accuracy
of a CAD system. |
Year | DOI | Venue |
---|---|---|
2010 | 10.1007/s10278-009-9201-0 | Journal of digital imaging |
Keywords | Field | DocType |
Lung,neoplasms,computer-aided detection,chest radiography | CAD,Lung cancer,Computer aided detection,Radiography,Radiology,Cad system,Medicine | Journal |
Volume | Issue | ISSN |
23 | 1 | 1618-727X |
Citations | PageRank | References |
1 | 0.36 | 0 |
Authors | ||
4 |
Name | Order | Citations | PageRank |
---|---|---|---|
Feng Li | 1 | 59 | 4.30 |
Roger Engelmann | 2 | 85 | 8.87 |
Kunio Doi | 3 | 1 | 0.36 |
Heber MacMahon | 4 | 202 | 31.61 |