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ORGAN DOSE ESTIMATION ACCOUNTING FOR UNCERTAINTY FOR PEDIATRIC AND YOUNG ADULT CT SCANS IN THE UNITED KINGDOM
- Source :
- Radiat Prot Dosimetry
- Publication Year :
- 2018
- Publisher :
- Oxford University Press (OUP), 2018.
-
Abstract
- Since our previous publication of organ dose for the pediatric CT cohort in the UK, there have been questions about the magnitude of uncertainty in our dose estimates. We therefore quantified shared and unshared uncertainties in empirical CT parameters extracted from 1073 CT films (1978–2008) from 36 hospitals in the study and propagated these uncertainties into organ doses using Monte Carlo random sampling and NCICT organ dose calculator. The average of 500 median brain and marrow doses for the full cohort was 35 (95% confidence interval: 30–40) mGy and 6 (5–7) mGy, respectively. We estimated that shared uncertainty contributed ~99% of coefficient of variation of median brain doses in brain scans compared to unshared uncertainty (1% contribution). We found that the previous brain doses were slightly underestimated for 1990 compared to the results in the current study due to the revised CTDI models based on CT films.
- Subjects :
- Paper
Adult
Male
Adolescent
Coefficient of variation
Radiation Dosage
Whole-Body Counting
Pediatric ct
030218 nuclear medicine & medical imaging
Cohort Studies
Young Adult
03 medical and health sciences
0302 clinical medicine
Reference Values
Dose estimation
Image Processing, Computer-Assisted
Humans
Medicine
Computer Simulation
Radiology, Nuclear Medicine and imaging
Young adult
Child
Radiation
Radiological and Ultrasound Technology
Phantoms, Imaging
business.industry
Infant, Newborn
Uncertainty
Public Health, Environmental and Occupational Health
Infant
General Medicine
United Kingdom
Confidence interval
Organ Specificity
Child, Preschool
030220 oncology & carcinogenesis
Cohort
Female
Tomography, X-Ray Computed
Nuclear medicine
business
Monte Carlo Method
Algorithms
Subjects
Details
- ISSN :
- 17423406 and 01448420
- Volume :
- 184
- Database :
- OpenAIRE
- Journal :
- Radiation Protection Dosimetry
- Accession number :
- edsair.doi.dedup.....1a6249e85eb1ecd6a0568ca2e2508924