Neonatal chest radiography: Influence of standard clinical protocols and radiographic equipment on pathology visibility and radiation dose using a neonatal chest phantom |
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| Affiliation: | 1. University of ALZahraa for Women, College of Health and Medical Technology, Karbala, Iraq;2. School of Health and Society, University of Salford, Salford, M6 6PU, United Kingdom;1. School of Health Sciences, University of Salford, Salford, M6 6PU, United Kingdom;2. Oslo Metropolitan University, Faculty of Health Sciences, Norway;3. Department of Oncology, Division of Cancer Medicine, Surgery and Transplantation, Oslo University Hospital, Radiumhospitalet, Oslo, Norway;1. Instituto de Biociências de Botucatu, P.O. BOX 510, Departamento de Física e Biofísica, UNESP—Universidade Estadual Paulista, Distrito de Rubião Junior S/N, Botucatu, 18618-000 São Paulo, Brazil;2. Departamento de Doenças Tropicais e Diagnóstico por Imagem, Faculdade de Medicina de Botucatu, UNESP—Universidade Estadual Paulista, Distrito de Rubião Junior S/N, Botucatu, 18618-000 São Paulo, Brazil;3. Instituto de Biociências de Botucatu, Departamento de Física e Biofísica, UNESP—Universidade Estadual Paulista, Distrito de Rubião Junior S/N, Botucatu, 18618-000 São Paulo, Brazil;4. Centro Brasileiro de Pesquisas Físicas, Laboratório de Altas Energias, Dr. Xavier Sigaud, 150, Rio de Janeiro, 22290-180 Rio de Janeiro, Brazil;1. Department of Radiology, Aarhus University Hospital, Aarhus, Denmark;2. Research Centre for Emergency Medicine, The research programme "The acute care patient", Aarhus University and Aarhus University Hospital, Aarhus, Denmark;3. Faculty of Health Studies, University of Bradford, Bradford, United Kingdom;4. Centre of Research in Rehabilitation (CORIR), Department of Clinical Medicine, Aarhus University and Aarhus University Hospital, Aarhus, Denmark |
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| Abstract: | IntroductionLittle is known about the variations in pathology visibility (PV) and their corresponding radiation dose values for neonatal chest radiography, between and within hospitals. Large variations in PV could influence the diagnostic outcome and the variations in radiation dose could affect the risk to patients. The aim of this study is to compare the PV and radiation dose for standard neonatal chest radiography protocols among a series of public hospitals.MethodsA Gammex 610 neonatal chest phantom was used to simulate the chest region of neonates. Radiographic acquisitions were conducted on 17 X-ray machines located in eight hospitals, utilising their current neonatal chest radiography protocols. Six qualified radiographers assessed PV visually using a relative visual grading analysis (VGA). Signal to noise ratios (SNR) and contrast to noise ratios (CNR) were measured as a measure of image quality (IQ). Incident air kerma (IAK) was measured using a solid-state dosimeter.ResultsPV and radiation dose varied substantially between and within hospitals. For PV, the mean (range) VGA scores, between and within the hospitals, were 2.69 (2.00–3.50) and 2.73 (2.33–3.33), respectively. For IAK, the mean (range), between and within the hospitals, were 24.45 (8.11–49.94) μGy and 34.86 (22.26–49.94) μGy, respectively.ConclusionBetween and within participating hospitals there was wide variation in the visibility of simulated pathology and radiation dose (IAK).Implications for practiceX-ray units with lower PV and higher doses require optimisation of their standard clinical protocols. Institutions which can offer acceptable levels of PV but with lower radiation doses should help facilitate national optimisation processes. |
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| Keywords: | Pathology visibility Image quality Radiation dose Dose optimisation Neonate chest radiography |
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