ArticlePloS one2016
How Much Is the Dose Varying between Follow-Up CT-Examinations Performed on the Same Scanner with the Same Imaging Protocol?
Article in PloS one, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers, 1 of them a synthesis that pooled it.
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Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
8 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Value of repeat CT for nonoperative management of patients with blunt liver and spleen injury: a systematic review.European journal of trauma and emergency surgery : official publication of the European Trauma Society · 2021Pooled it
- Radiation dose has no significant impact on CT-based bone mineral density measurements in a large-animal model.Scientific reports · 2026Article
- The Impact of Radiation Dose on CT-Based Body Composition Analysis: A Large-Animal Study.Journal of cachexia, sarcopenia and muscle · 2025Article
- Evaluation of an in-use chest CT protocol in lung cancer screening - A single institutional study.Acta radiologica open · 2024Article
- A multi-institutional assessment of low-dose protocols in chest computed tomography: Dose and image quality.Acta radiologica open · 2024Article
- Radiation Exposure in Computed Tomography.Deutsches Arzteblatt international · 2023Review
- Radiation doses in CT examinations from the West China Hospital, Sichuan University and setting local diagnostic references levels.Annals of translational medicine · 2020Article
- Imaging of Patients with Complex Hemodialysis Arterio-Venous Fistulas using Time-Resolved Dynamic CT Angiography: Comparison with Duplex Ultrasound.Scientific reports · 2017Article
Corrections and comments
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Authors and funding
8 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeTo investigate the dose variation between follow-up CT examinations, when a patient is examined several times on the same scanner with the identical scan protocol which comprised automated exposure control. MATERIAL AND
methodsThis retrospective study was approved by the local ethics committee. The volume computed tomography dose index (CTDIvol) and the dose-length-product (DLP) were recorded for 60 cancer patients (29 male, 31 female, mean age 60.1 years), who received 3 follow-up CT examinations each composed of a non-enhanced scan of the liver (LI-CT) and a contrast-enhanced scan of chest (CH-CT) and abdomen (AB-CT). Each examination was performed on the same scanner (Siemens Definition FLASH) equipped with automated exposure control (CARE Dose 4D and CARE KV) using the identical scan protocol.
resultsThe median percentage difference in DLP between follow-up examinations was 9.6% for CH-CT, 10.3% for LI-CT, and 10.1% for AB-CT; the median percentage difference in CTDIvol 8.3% for CH-CT, 7.4% for LI-CT and 7.7% for AB-CT (p<0.0001 for all values). The maximum difference in DLP between follow-up examinations was 67.5% for CH-CT, 50.8% for LI-CT and 74.3% for AB-CT; the maximum difference in CTDIvol 62.9% for CH-CT, 47.2% for LI-CT, and 49% for AB-CT.
conclusionA significant variance in the radiation dose occurs between follow-up CT examinations when the same CT scanner and the identical imaging protocol are used in combination with automated exposure control.
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