Effect on Sensitivity and Specificity of Mammography Screening with or Without Comparison of Old Mammograms
| Autor: | G Svane, B. Vitak, Mercidyl Gelig Thurfjell, E Azavedo, Erik Thurfjell |
|---|---|
| Rok vydání: | 2000 |
| Předmět: |
Gynecology
medicine.medical_specialty education.field_of_study medicine.diagnostic_test Radiological and Ultrasound Technology business.industry Medical screening education Population Mammary gland General Medicine medicine.anatomical_structure medicine Mammography Radiology Nuclear Medicine and imaging Radiology Mammography screening Detection rate Recall rate skin and connective tissue diseases business |
| Zdroj: | Acta Radiologica. 41:52-56 |
| ISSN: | 1600-0455 0284-1851 |
| Popis: | Purpose: To evaluate the effect of old mammograms on the specificity and sensitivity of radiologists in mammography screening. Material and Methods: One hundred and fifty sets of screening mammograms were examined by 3 experienced screeners twice: once without and once in comparison with older mammograms. The films came from a population-based screening done during the first half of 1994 and comprised all 35 cancers detected during screening in 1994, 12/24 interval cancers, 14/34 cancers detected in the following screening and 89 normal mammograms. Results: Without old mammograms, the screeners detected an average of 40.3 cancers (range 37–42), with a specificity of 87% (85–88%). With old mammograms, the screeners detected 37.7 cancers (range 34–42) with a specificity of 96% (94–99%). The change in detection rate was not significant. However, the increase in specificity was significant for each screener ( p = 0.0002–0.03). Conclusion: Mammography screening with old mammograms available for comparison decreased the false-positive recall rate. The effect on sensitivity, however, was unclear. |
| Databáze: | OpenAIRE |
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