Abstract
Objective
To compare computed tomographic colonography (CTC) performance of 4 trained radiographers with the CTC performance of 2 experienced radiologists.
Methods
Four radiographers and two radiologists interpreted 87 cases with 40 polyps ≥6 mm. Sensitivity, specificity-, and positive predictive value (PPV) were assessed on a per-patient basis. On a per-polyp basis, sensitivity was calculated according to the respective size categories (polyps ≥6 mm as well as polyps ≥10 mm).
Results
Overall per-patient sensitivity for polyps ≥6 mm was 76.2% (95% CI 61.4- 91.0) and 76.2% (95% CI 61.7- 90.6), for the radiographers and radiologists, respectively. Overall per-patient specificity for polyps ≥6 mm were 81.4% (95% CI 73.7-89.2) and 81.1% (95% CI 73.8 -88.3) for the radiographers and the radiologists, respectively. For the radiographers, overall per-polyp sensitivity was 60.3% (95% CI 50.3 - 70.3) and 60.7% (95% CI 42.2-79.2) for polyps ≥6 mm and ≥10 mm, respectively. For the radiologists, overall per polyp sensitivity was 59.2% (95% CI 46.4 - 72.0) and 69.0% (95% CI 48.1 - 89.6) for polyps ≥6 mm and ≥10 mm, respectively.
Conclusion
Radiographers with training in CT colonographic evaluation achieved sensitivity and specificity in polyp detection comparable with that of experienced radiologists.
To compare computed tomographic colonography (CTC) performance of 4 trained radiographers with the CTC performance of 2 experienced radiologists.
Methods
Four radiographers and two radiologists interpreted 87 cases with 40 polyps ≥6 mm. Sensitivity, specificity-, and positive predictive value (PPV) were assessed on a per-patient basis. On a per-polyp basis, sensitivity was calculated according to the respective size categories (polyps ≥6 mm as well as polyps ≥10 mm).
Results
Overall per-patient sensitivity for polyps ≥6 mm was 76.2% (95% CI 61.4- 91.0) and 76.2% (95% CI 61.7- 90.6), for the radiographers and radiologists, respectively. Overall per-patient specificity for polyps ≥6 mm were 81.4% (95% CI 73.7-89.2) and 81.1% (95% CI 73.8 -88.3) for the radiographers and the radiologists, respectively. For the radiographers, overall per-polyp sensitivity was 60.3% (95% CI 50.3 - 70.3) and 60.7% (95% CI 42.2-79.2) for polyps ≥6 mm and ≥10 mm, respectively. For the radiologists, overall per polyp sensitivity was 59.2% (95% CI 46.4 - 72.0) and 69.0% (95% CI 48.1 - 89.6) for polyps ≥6 mm and ≥10 mm, respectively.
Conclusion
Radiographers with training in CT colonographic evaluation achieved sensitivity and specificity in polyp detection comparable with that of experienced radiologists.
| Bidragets oversatte titel | En sammenligning af den diagnostiske nøjagtighed ved beskrivelse af CT-kolografier, udført af specielt uddannede radiografer og radiologer |
|---|---|
| Originalsprog | Engelsk |
| Tidsskrift | Insights into Imaging |
| Vol/bind | 4 |
| Udgave nummer | 4 |
| Sider (fra-til) | 491-497 |
| Antal sider | 7 |
| ISSN | 1869-4101 |
| DOI | |
| Status | Udgivet - aug. 2013 |
Emneord
- kræft
- radiografi
- kræftpatienter