Radiation dose-reduction strategies in thoracic CT

J. B. Moser*, S. L. Sheard, Sue Edyvean, I. Vlahos

*Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review

18 Citations (Scopus)


Modern computed tomography (CT) machines have the capability to perform thoracic CT for a range of clinical indications at increasingly low radiation doses. This article reviews several factors, both technical and patient-related, that can affect radiation dose and discusses current dose-reduction methods relevant to thoracic imaging through a review of current techniques in CT acquisition and image reconstruction. The fine balance between low radiation dose and high image quality is considered throughout, with an emphasis on obtaining diagnostic quality imaging at the lowest achievable radiation dose. The risks of excessive radiation dose reduction are also considered. Inappropriately low dose may result in suboptimal or non-diagnostic imaging that may reduce diagnostic confidence, impair diagnosis, or result in repeat examinations incurring incremental ionising radiation exposure.

Original languageEnglish
Pages (from-to)407-420
Number of pages14
JournalClinical Radiology
Issue number5
Publication statusPublished - 1 May 2017


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