ArticleSpringerPlus2016
Radiation dose reduction based on CNR index with low-tube voltage scan for pediatric CT scan: experimental study using anthropomorphic phantoms.
Article in SpringerPlus, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed, 17 citations in OpenAlex.
- Effectiveness of the air-gap method for reducing radiation dose in neonate CT examinations.Radiological physics and technology · 2025Article
- Evaluation and analysis of surgical treatment for single-level or multi-level lumbar degenerative disease based on radiography.Quantitative imaging in medicine and surgery · 2024Article
- Optimal image quality and radiation doses with optimal tube voltages/currents for pediatric anthropomorphic phantom brains.PloS one · 2024Article
- A retrospective cohort study on the significance of preoperative radiological evaluation of lumbar degenerative diseases for surgical reference.Quantitative imaging in medicine and surgery · 2023Article
- Usefulness of large beam-shaping filters at different tube voltages of newborn chest CT.Physical and engineering sciences in medicine · 2023Article
- Usefulness of diluted contrast medium for test-scanning of infants scheduled for contrast-enhanced cardiovascular computed tomography angiography.The British journal of radiology · 2019Article
- Extent of tube-current reduction using sinogram affirmed iterative reconstruction in pediatric computed tomography: phantom study.Pediatric radiology · 2019Article
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7 authors at 2 institutions in 1 country.
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Abstract
backgroundTo figure out the relationship between image noise and contrast noise ratio (CNR) at different tube voltages, using anthropomorphic new-born and 1-year-old phantoms, and to discuss the feasibility of radiation dose reduction, based on the obtained CNR index from image noise. We performed helical scans of the anthropomorphic new-born and 1-year-old phantoms. The CT numbers of the simulated aorta and image noise of the simulated mediastinum were measured; then CNR was calculated on 80, 100, and 120-kVp images reconstructed with filtered back projection (FBP) and iterative reconstruction (IR). We also measured the center and surface dose in the case of CNR of 14 using radio-photoluminescence glass dosimeters.
resultsThe CT number of the simulated aorta was increased with decreasing tube voltage from 120 to 80 kVp (362.5-535.1 HU for the new-born, 358.9-532.6 HU for the 1-year-old). At CNR of 14, the center dose was 0.4, 0.6 and 0.9 mGy at FBP and 0.5, 0.6 and 0.9 mGy at IR and with the new-born phantom acquired at 80, 100 and 120 kVp, respectively. The center dose for FBP image was reduced by 56% at 80 kVp, 34% at 100 kVp for the new-born and 36% at 80 kVp, 22% at 100 kVp for the 1-year-old compared with that at 120 kVp. We obtained a relationship between image noise and CNR at different tube voltages using the anthropomorphic new-born and 1-year-old phantoms.
conclusionThe use of index of CNR with low-tube voltage may achieve further radiation dose reduction in pediatric CT examination.
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