Image quality and dose in mammography in 17 countries in Africa, Asia and Eastern Europe: Results from IAEA projects
| Autor: | Samuel Oola, W. E. Muhogora, Julius Ziliukas, Ion Ursulean, S. Economides, Cyril Schandorf, I.R. Videnović, Edward Grupetta, Mohammad Hassan Kharita, Saeid Setayeshi, Vesna Gershan, Milomir Milakovic, Olivera Ciraj-Bjelac, Pirunthavany Muthuvelu, Constantin Milu, Dario Faj, Areesha Zaman, Simona Avramova-Cholakova, Adnan Beganović, Madan M. Rehani |
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| Rok vydání: | 2012 |
| Předmět: |
medicine.medical_specialty
Asia Scoring system Quality Assurance Health Care Image quality media_common.quotation_subject Radiography Population Radiation Dosage Sensitivity and Specificity 030218 nuclear medicine & medical imaging 03 medical and health sciences 0302 clinical medicine Image Interpretation Computer-Assisted medicine Humans Mammography Radiology Nuclear Medicine and imaging Quality (business) Medical physics Europe Eastern Radiometry education media_common education.field_of_study medicine.diagnostic_test business.industry Radiation dose QA mammography Reproducibility of Results General Medicine mammography image quality radiation dose QA 030220 oncology & carcinogenesis Africa Practice Guidelines as Topic business Quality assurance |
| Zdroj: | European Journal of Radiology |
| ISSN: | 0720-048X |
| Popis: | Purpose: The objective is to study mammography practice from an optimisation point of view by assessing the impact of simple and immediately implementable corrective actions on image quality. Materials and methods: This prospective multinational study included 54 mammography units in 17 countries. More than 21,000 mammography images were evaluated using a three-level image quality scoring system. Following initial assessment, appropriate corrective actions were implemented and image quality was re-assessed in 24 units. Results: The fraction of images that were considered acceptable without any remark in the first phase (before the implementation of corrective actions) was 70% and 75% for cranio-caudal and medio-lateral oblique projections, respectively. The main causes for poor image quality before corrective actions were related to film processing, damaged or scratched image receptors, or film-screen combinations that are not spectrally matched, inappropriate radiographic techniques and lack of training. Average glandular dose to a standard breast was 1.5mGy (mean and range 0.59-3.2 mGy). After optimisation the frequency of poor quality images decreased, but the relative contributions of the various causes remained similar. Image quality improvements following appropriate corrective actions were up to 50 percentage points in some facilities. Conclusions: Poor image quality is a major source of unnecessary radiation dose to the breast. An increased awareness of good quality mammograms is of particular importance for countries that are moving towards introduction of population-based screening programmes. The study demonstrated how simple and low-cost measures can be a valuable tool in improving of image quality in mammography. (C) 2011 Elsevier Ireland Ltd. All rights reserved. |
| Databáze: | OpenAIRE |
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