ArticleThe British journal of radiology2016
Effective radiation doses of CT examinations in Japan: a nationwide questionnaire-based study.
Article in The British journal of radiology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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Who cites it
11 citing papers in PubMed.
- Radiation Exposure to the Brains of Interventional Radiology Staff: A Phantom Study.Bioengineering (Basel, Switzerland) · 2024Article
- Radiological imaging protection: a study on imaging dose used while planning computed tomography for external radiotherapy in Japan.Journal of radiation research · 2024Article
- Image Quality and Radiation Dose of Conventional and Wide-Field High-Resolution Cone-Beam Computed Tomography for Cerebral Angiography: A Phantom Study.Tomography (Ann Arbor, Mich.) · 2023Article
- Evaluation of radiation dose reduction in head CT using the half-dose method.Japanese journal of radiology · 2023Article
- Evaluation of radiation dose for inferior vena cava filter placement during pregnancy: A comparison of dosimetry and dose calculation software.Journal of applied clinical medical physics · 2023Article
- Adult Computed Tomography examinations in Uganda: Towards determining the National Diagnostic Reference Levels.BMC medical imaging · 2022Article
- What are useful methods to reduce occupational radiation exposure among radiological medical workers, especially for interventional radiology personnel?Radiological physics and technology · 2022Review
- Pitfalls in chest CT findings of COVID-19 patients infected during hospitalisation.Clinical imaging · 2021Article
- Fetal radiation dose of four tube voltages in abdominal CT examinations during pregnancy: A phantom study.Journal of applied clinical medical physics · 2021Article
- Radiation protection in radiological imaging: a survey of imaging modalities used in Japanese institutions for verifying applicator placements in high-dose-rate brachytherapy.Journal of radiation research · 2021Article
- Diagnostic reference levels and achievable doses for common computed tomography examinations: Results from the Japanese nationwide dose survey.The British journal of radiology · 2019Article
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Authors and funding
8 authors.
Funding
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Abstract
objectiveThe aims of this study were to estimate the effective radiation doses from CT examinations of both adults and children in Japan and to study the impact of various scan parameters on the effective doses.
methodsA questionnaire, which contained detailed questions on the CT scan parameters employed, was distributed to 3000 facilities throughout Japan. For each scanner protocol, the effective doses for head (non-helical and helical), chest and upper abdomen acquisitions were estimated using ImPACT CT Patient Dosimetry Calculator software v. 1.0.4 (St George's Hospital, London, UK).
resultsThe mean effective doses for chest and abdominal examinations using 80-110 kV were significantly lower than those using 120 kV. However, there was no statistically significant difference in the mean effective doses for head scans between facilities employing 80-110 kV and 120 kV. In chest and abdominal examinations, the mean effective doses using CT scanners from Western manufacturers [Siemens (Forchheim, Germany), Philips (Eindhoven, Netherlands) and GE Medical Systems (Milwaukee, WI)] were significantly lower than those of examinations using Japanese scanners [Hitachi (Kashiwa, Japan) and Toshiba (Otawara, Tochigi, Japan)], except for in paediatric chest examinations.
conclusionThe mean effective doses for adult head, chest and abdominal CT examinations were 2.9, 7.7 and 10.0 mSv, respectively, whereas the corresponding mean effective doses for paediatric examinations were 2.6, 7.1 and 7.7 mSv, respectively. ADVANCES IN KNOWLEDGE: Facilities using CT scanners by Western manufacturers commonly adopt low-tube-voltage techniques, and low-tube-voltage CT may be useful for reducing the radiation doses to the patients, particularly for the body region.
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