Improvement of Cancer Detection on Mammograms via BREAST Test Sets
| Autor: | Kriscia Tapia, Helen Frazer, Phuong Dung Trieu, Warwick Lee, Patrick C. Brennan |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Adult
medicine.medical_specialty Wilcoxon signed-rank test Breast imaging education Breast Neoplasms Cancer detection 030218 nuclear medicine & medical imaging 03 medical and health sciences 0302 clinical medicine medicine Mammography Humans Mass Screening Radiology Nuclear Medicine and imaging Breast Aged Receiver operating characteristic medicine.diagnostic_test business.industry Australia Middle Aged Telemedicine Test (assessment) ROC Curve 030220 oncology & carcinogenesis Test set Female Radiology business Algorithms |
| Zdroj: | Academic radiology. 26(12) |
| ISSN: | 1878-4046 |
| Popis: | Background Breast Screen Reader Assessment Strategy (BREAST) is an innovative training and research program for radiologists in Australia and New Zealand. The aim of this study is to evaluate the efficacy of BREAST test sets in improving readers’ performance in detecting cancers on mammograms. Materials and Methods Between 2011 and 2018, 50 radiologists (40 fellows, 10 registrars) completed three BREAST test sets and 17 radiologists completed four test sets. Each test set contained 20 biopsy-proven cancer and 40 normal cases. Immediate image-based feedback was available to readers after they completed each test set which allowed the comparison of their selections with the truth. Case specificity, case sensitivity, lesion sensitivity, the Receiver Operating Characteristic (ROC) Area Under the Curve (AUC) and Jackknife Free-Response Receiver Operating Characteristic (JAFROC) Figure of Merit (FOM) were calculated for each reader. Kruskal–Wallis test was utilized to compare scores of the radiologist and registrars across all test-sets whilst Wilcoxon signed rank test was to compare the scores between pairs of test sets. Results Significant improvements in lesion sensitivity ranging from 21% to 31% were found in radiologists completing later test sets compared to first test set (p ≤ 0.01). Eighty three percent of radiologists achieved higher performance in lesion sensitivity after they completed the first read. Registrars had significantly better scores in the third test set compared to the first set with mean increases of 79% in lesion sensitivity (p = 0.005) and 37% in JAFROC (p = 0.02). Sixty percent and 100% of registrars increased their scores in lesion sensitivity in the second and third reads compared to the first read while the percentage of registrars with higher scores in JAFROC was 80%. Conclusion Introduction of BREAST into national training programs appears to have an important impact in promoting diagnostic efficacy amongst radiologists and radiology registrars undergoing mammographic readings. |
| Databáze: | OpenAIRE |
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