Trade-off between breast mean glandular dose and image quality in digital and conventional mammogram systems: A multicenter study
| Autor: | A. Mostear, Gurkaran Johal, Razzagh Abedi-Firouzjah, J. Rezapour, Ali Tarighatnia, L. Dastranj, Nader D. Nader, Seyed Mohammad Hassan Hosseini, F. Falahati |
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| Rok vydání: | 2021 |
| Předmět: |
Digital mammography
Wilcoxon signed-rank test medicine.diagnostic_test Renewable Energy Sustainability and the Environment Image quality business.industry Computer science Health Toxicology and Mutagenesis Public Health Environmental and Occupational Health Imaging phantom 030218 nuclear medicine & medical imaging Conventional mammography 03 medical and health sciences 0302 clinical medicine Nuclear Energy and Engineering Multicenter study Friedman test 030220 oncology & carcinogenesis medicine Mammography Safety Risk Reliability and Quality Nuclear medicine business Waste Management and Disposal |
| Zdroj: | Radioprotection. 56:221-227 |
| ISSN: | 1769-700X 0033-8451 |
| DOI: | 10.1051/radiopro/2021017 |
| Popis: | Evaluating the patient dose or exposure parameters considering the image quality can improve the chances of accurate diagnosis and reduce the unnecessary exposures from medical devices such as mammography. This study aimed to evaluate digital and conventional mammography machines while considering the trade-off between image quality and mean glandular dose (MGD) using a phantom. In the present study, one full-field digital mammography (FFDM) and two film-screen mammography (FSM) machines were investigated. The MGD values and image quality were assessed using the American College of Radiology (ACR) phantom at various mAs and constant kVp values. The results were obtained and compared with European guidelines. Friedman and Wilcoxon statistical tests were used to show the comparison. The results from the quality control (QC) tests demonstrated that all machines are functioning well. The best image quality in the digital mammography machine was observed at the MGD of 1.8 mGy and 55 mAs. In addition, the two conventional machines had the best image quality regarding the imaging of the ACR phantom at 65 mAs with an MGD of 2.1 mGy. These values were considered as appropriate values for the studied mammography systems. Furthermore, the Friedman test demonstrated that there are significant differences between the measured image quality values obtained from the different machines (p |
| Databáze: | OpenAIRE |
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