Optimisation of radiation dose and image quality in mobile neonatal chest radiography |
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| Affiliation: | 1. Tecnologico de Monterrey, Escuela de Medicina y Ciencias de la Salud, Monterrey, Nuevo Leon, 64710, Mexico;2. CICFIM-Facultad de Ciencias Físico-Matemáticas, Universidad Autónoma de Nuevo León, San Nicolás de los Garza, Nuevo Leon, 66455, Mexico;1. Department of Radiology, Centre for Functional and Diagnostic Imaging and Research, Copenhagen University Hospital Hvidovre, Copenhagen, Denmark;2. Department of Orthopaedic Surgery, Clinical Orthopedic Research Hvidovre, Copenhagen University Hospital Hvidovre, Copenhagen, Denmark;3. Clinical Research Center, Copenhagen University Hospital Hvidovre, Kettegaard Alle 30, 2650 Hvidovre, Copenhagen, Denmark;1. Department of Physics, Center of Exact Sciences and Technology, Federal University of Sergipe, UFS, Marechal Rondom Street, São Cristóvão, Brazil;2. Nuclear Energy Research Institute, University of São Paulo, USP, Almeida Prado Street, São Paulo, 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;1. Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan, College of Medicine, Seoul, South Korea;2. Department of Medical Physics, Korea University, South Korea;3. Department of Radiology, Kyung Hee University Hospital, College of Medicine, Kyung Hee University, Seoul, South Korea |
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| Abstract: | PurposeTo optimise the radiation dose and image quality for chest radiography in the neonatal intensive care unit (NICU) by increasing the mean beam energy.MethodsTwo techniques for the acquisition of NICU AP chest X-ray images were compared for image quality and radiation dose. 73 images were acquired using a standard technique (56 kV, 3.2 mAs and no additional filtration) and 90 images with a new technique (62 kV, 2 mAs and 2 mm Al filtration). The entrance surface air kerma (ESAK) was measured using a phantom and compared between the techniques and against established diagnostic reference levels (DRL). Images were evaluated using seven image quality criteria independently by three radiologists. Images quality and radiation dose were compared statistically between the standard and new techniques.ResultsThe maximum ESAK for the new technique was 40.20 μGy, 43.7% of the ESAK of the standard technique. Statistical evaluation demonstrated no significant differences in image quality between the two acquisition techniques.ConclusionsBased on the techniques and acquisition factors investigated within this study, it is possible to lower the radiation dose without any significant effects on image quality by adding filtration (2 mm Al) and increasing the tube potential. Such steps are relatively simple to undertake and as such, other departments should consider testing and implementing this dose reduction strategy within clinical practice where appropriate. |
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| Keywords: | Paediatric radiology Optimisation Chest radiography Radiation protection Neonatal radiography |
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