Development of age-specific Japanese head phantoms for dose evaluation in paediatric head CT examinations
| Autor: | Takahiko Aoyama, M Yamauchi, Keiichi Akahane, T. Katsu, Mitsuru Ikeda, K. Narai, Keisuke Fujii, Chiyo Yamauchi-Kawaura, Kuniharu Imai, Satoshi Obara |
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| Rok vydání: | 2014 |
| Předmět: |
Head size
Male Aging Anatomical structures Computed tomography Radiation Dosage Risk Assessment Sensitivity and Specificity Imaging phantom Radiation Protection Japan Radiation Monitoring Medicine Humans Radiology Nuclear Medicine and imaging Dicom viewer Radiation Radiological and Ultrasound Technology medicine.diagnostic_test business.industry Phantoms Imaging Public Health Environmental and Occupational Health Infant Newborn Absorption Radiation Infant Reproducibility of Results General Medicine Equipment Design equipment and supplies Age specific body regions Equipment Failure Analysis Child Preschool Head (vessel) business Nuclear medicine Tomography X-Ray Computed Head |
| Zdroj: | Radiation protection dosimetry. 163(2) |
| ISSN: | 1742-3406 |
| Popis: | In this study, the authors developed age-specific physical head phantoms simulating the physique of Japanese children for dose evaluation in paediatric head computed tomography (CT) examinations. Anatomical structures at 99 places in 0-, 0.5-, 1- and 3-y-old Japanese patients were measured using DICOM viewer software from CT images, and the head phantom of each age was designed. For trial manufacture, a 3-y-old head phantom consisting of acrylic resin and gypsum was produced by machine processing. Radiation doses for the head phantom were measured with radiophotoluminescence glass dosemeters and Si-pin photodiode dosemeters. To investigate whether the phantom shape was suitable for dose evaluation, organ doses in the same scan protocol were compared between the 3-y-old head and commercially available anthropomorphic phantoms having approximately the same head size. The doses of organs in both phantoms were equivalent. The authors' designed paediatric head phantom will be useful for dose evaluation in paediatric head CT examinations. |
| Databáze: | OpenAIRE |
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