Efficacy of the spiral flow generating extended tube during paediatric CCTA |
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| Institution: | 1. Department of Radiological Technology, Faculty of Health Science and Technology, Kawasaki University of Medical Welfare, 288, Matsushima, Kurashiki, Okayama, 701-0193, Japan;2. Department of Medical Physics, Faculty of Life Sciences, Kumamoto University, Kumamoto, 1-1-1 Honjo, Kumamoto, 860-8556, Japan;3. Department of Diagnostic Radiology, Graduate School of Medical Sciences, Kumamoto University, 1-1-1 Honjo, Kumamoto, 860-8556, Japan;4. Department of Diagnostic Radiology, Tsuchiya General Hospital, Nakajima-cho 3-30, Naka-ku, Hiroshima, 730-8655, Japan;5. Department of Pediatric Cardiology, Tsuchiya General Hospital, Nakajima-cho 3-30, Naka-ku, Hiroshima, 730-8655, Japan;6. Department of Radiological Technology, Tsuchiya General Hospital, Nakajima-cho 3-30, Naka-ku, Hiroshima, 730-8655, Japan;7. Department of Radiological Technology, Kawamura Clinic, Otemachi, Naka-ku, Hiroshima, 730-0051, Japan;8. Department of Diagnostic Radiology, Graduate School of Biomedical Sciences, Hiroshima University, Kasumi 1-2-3 Minami-ku, Hiroshima, 734-8551, Japan;1. Singapore Institute of Technology, 10 Dover Drive, 138683 Singapore;2. Sengkang General Hospital, 110 Sengkang East Way, 544886 Singapore;1. Department of Radiography, Faculty of Health Sciences, Durban University of Technology, South Africa;2. Deputy Vice-Chancellor Teaching and Learning, Durban University of Technology, South Africa;1. Inspeção Geral da Agricultura, do Mar, do Ambiente, e do Ordenamento do Territorio (IGAMOT), Seção Radiações Ionizantes, Rua de O Seculo, N.51, 1200-433, Lisbon, Portugal;2. Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Campus Tecnológico e Nuclear, Estrada Nacional 10, km 139,7, 2695-066, Bobadela LRS, Portugal;3. Instituto Português de Oncologia de Lisboa Francisco Gentil, Lisbon, Portugal;4. Agência Portuguesa do Ambiente, Departamento de Emergências e Proteção Radiológica, Divisão de Autorização e Segurança Nuclear, Rua da Murgueira 9 – Zambujal – Alfragide, 2610-124, Amadora, Portugal |
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| Abstract: | IntroductionTo compare the computed tomography (CT) number for paediatric cardiac computed tomography angiography (CCTA) and visualisation score of the three-dimensional (3D) images using the conventional T-shaped extended tube (T-tube) and spiral flow-generating extended tube (spiral-tube) connected between the contrast injector and cannula.MethodsIn total, 108 patients suspected to have congenital heart disease (CHD) were considered for inclusion. We utilised the T-tube for intravenous contrast and spiral-tube in 54 patients each. Observers individually inspected randomized volume rendering images of the internal thoracic artery, each acquired from the with or without spiral-tube groups, using a four-point scale. We compared the mean CT number of the ascending aorta (AAO) and pulmonary artery (PA), contrast noise ratio (CNR), CT number for the AAO and PA enhancement ratio, and the visualisation scores between the groups.ResultsThere were no significant differences in patient characteristics between the with or without spiral-tube groups (p > 0.05). The mean CT number ±standard deviation for the AAO and PA, and the CNR without or with spiral-tube groups were 441.2 ± 89.2 and 489.8 ± 86.1 HU for the AAO, 436.3 ± 100.6 and 475.3 ± 85.2 HU for the PA, and 9.5 ± 2.2 and 10.8 ± 2.4 for the CNR, respectively (p < 0.05). In the spiral-tube group, the CT number, CNR, and visualisations score of the 3D images were significantly higher for the AAO and PA than those in the T-tube group (p < 0.05).ConclusionThe spiral-tube proved to be beneficial in improving the CT number for the AAO and PA, CNR, and visualisation score compared with the conventional T-tube during paediatric CCTA.Implications for practiceThe spiral-tube may allow the visualisation of smaller blood vessels than those visualised by the conventional T-tube for paediatric patients in CCTA. |
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| Keywords: | Computed tomography Contrast enhancement Paediatric Congenital heart disease Spiral flow-generating tube |
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