CT scans in young people in Northern England: trends and patterns 1993–2002
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Although CT can be greatly beneficial, its relatively high radiation doses have caused public health concerns.
To assess patterns in CT usage among patients aged less than 22 years in Northern England during the period 1993–2002.
Materials and methods
Electronic data were obtained from radiology information systems of all nine National Health Service trusts in the region.
A total of 38,681 scans had been performed in 20,483 patients aged less than 22 years. The number of CT examinations rose, with the steepest increase between 1997 and 2000. The number of patients scanned per year increased less dramatically, with 2.24/1,000 population aged less than 22 years having one scan or more in 1993 compared to 3.54/1,000 in 2002. This reflects an increase in the median number of scans per patient, which rose from 1 in 1993 to 2 by 1999. More than 70% of CT examinations were of the head, with the number of head examinations varying with time and patient age.
The frequency of CT scans in this population more than doubled during the study period. This is partly, but not wholly, explained by an increase in the number of scans per patient.
KeywordsRadiation dose Computed tomography Trends Child
This study was supported by contract NO2-CP-75501 from the United States National Cancer Institute and through funding from the Radiation Research Programme of the United Kingdom Department of Health. We thank the staff in radiology departments across the Northern Region of England who contributed data to this study and Mrs. Katharine Kirton and Mr. Richard Hardy for their assistance with the study. We also thank Dr. John Kotre for his comments on the paper.
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