Observer accuracy in the detection of pulmonary nodules on CT: effect of cine frame rate.
Clin Radiol
; 65(2): 133-6, 2010 Feb.
Article
in En
| MEDLINE
| ID: mdl-20103435
ABSTRACT
AIM:
To assess the effect of cine frame rate on the accuracy of the detection of pulmonary nodules at computed tomography (CT). MATERIALS ANDMETHODS:
CT images of 15 consecutive patients with (n = 13) or without (n = 2) pulmonary metastases were identified. Initial assessment by two thoracic radiologists provided the "actual" or reference reading. Subsequently, 10 radiologists [board certified radiologists (n = 4) or radiology residents (n = 6)] used different fixed cine frame rates for nodule detection. Within-subjects analysis of variance (ANOVA) was used to evaluate the data.RESULTS:
Eighty-nine nodules were identified by the thoracic radiologists (median 8, range 0-29 per patient; median diameter 9 mm, range 4-40 mm). There was a non-statistically significant trend to reduced accuracy at higher frame rates (p=0.113) with no statistically significant difference between experienced observers and residents (p = 0.79).CONCLUSION:
The accuracy of pulmonary nodule detection at higher cine frame rates is reduced, unrelated to observer experience.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Tomography, X-Ray Computed
/
Lung Neoplasms
Type of study:
Diagnostic_studies
/
Observational_studies
Limits:
Humans
Language:
En
Journal:
Clin Radiol
Year:
2010
Document type:
Article
Affiliation country:
United kingdom