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A method for the systematic selection of technique factors in paediatric CT

Lookup NU author(s): Dr Colin Kotre, Simon Willis

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Abstract

A method for the systematic selection of paediatric CT technique factors is described. The approach is based on the assumption that the level of image noise acceptable for a given adult CT image is also acceptable for the equivalent paediatric examination. A simple exponential attenuation model is proposed. Effective linear attenuation coefficients were initially established from a series of phantom measurements simulating head, chest and abdomen examinations at 120 kVp, then extended for a range of tube potentials and beam qualities using a beam spectral model. Application of the method is demonstrated using phantoms representing head, chest and abdomen sections for neonate and ages I year, 5 years, 10 years, 15 years and adult.

Publication metadata

Author(s): Kotre CJ, Willis SP

Publication type: Article

Publication status: Published

Journal: British Journal of Radiology

Year: 2003

Volume: 76

Issue: 901

Pages: 51-56

ISSN (print): 0007-1285

ISSN (electronic): 0961-2653

Publisher: British Institute of Radiology

URL: http://dx.doi.org/10.1259/bjr/53215511

DOI: 10.1259/bjr/53215511

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