Evidence map›Paper›PMID 36633769›Full record

ArticlePhysical and engineering sciences in medicine2023

Usefulness of large beam-shaping filters at different tube voltages of newborn chest CT.

Takanori Masuda, Yoshinori Funama, Takeshi Nakaura, Tomoyasu Sato, Kotaro Urayama, Masao Kiguchi, Takayuki Oku, Masato Yoshida, Shinichi Arao, Atsushi Ono and 2 more

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Article in Physical and engineering sciences in medicine, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

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Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

1 citing paper in PubMed.

  1. Review
4 · The record

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PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

12 authors.

Takanori MasudaDepartment of Radiological Technology, Faculty of Health Science and Technology, Kawasaki University of Medical Welfare, 288, Matsushima, Kurashiki, 701-0193, Kurashiki-city, Okayama, Japan. takanorimasuda@yahoo.co.jp.ORCID http://orcid.org/0000-0002-4164-4369
Yoshinori FunamaDepartment of Medical Physics, Faculty of Life Sciences, Kumamoto University, 1-1-1 Honjo, 860-8556, Kumamoto, Japan.
Takeshi NakauraDepartment of Diagnostic Radiology, Graduate School of Medical Sciences, Kumamoto University, 1-1-1 Honjo, 860-8556, Kumamoto, Japan.
Tomoyasu SatoDepartment of Diagnostic Radiology, Tsuchiya General Hospital, Nakajima-cho 3-30, Naka-ku, 730-8655, Hiroshima, Japan.
Kotaro UrayamaDepartment of Pediatric cardiology, Tsuchiya General Hospital, Nakajima-cho 3-30, Naka-ku, 730-8655, Hiroshima, Japan.
Masao KiguchiDepartment of Diagnostic Radiology, Graduate School of Biomedical Sciences, Hiroshima University, Kasumi 1-2-3 Minami-ku, 734-8551, Hiroshima, Japan.
Takayuki OkuDepartment of Radiological technologist, Tsuchiya General Hospital, Nakajima-cho 3-30, Naka-ku, 730-8655, Hiroshima, Japan.
Masato YoshidaDepartment of Radiological technologist, Tsuchiya General Hospital, Nakajima-cho 3-30, Naka-ku, 730-8655, Hiroshima, Japan.
Shinichi AraoDepartment of Radiological Technology, Faculty of Health Science and Technology, Kawasaki University of Medical Welfare, 288, Matsushima, Kurashiki, 701-0193, Kurashiki-city, Okayama, Japan.
Atsushi OnoDepartment of Radiological Technology, Faculty of Health Science and Technology, Kawasaki University of Medical Welfare, 288, Matsushima, Kurashiki, 701-0193, Kurashiki-city, Okayama, Japan.
Junichi HiratsukaDepartment of Radiological Technology, Faculty of Health Science and Technology, Kawasaki University of Medical Welfare, 288, Matsushima, Kurashiki, 701-0193, Kurashiki-city, Okayama, Japan.
Kazuo AwaiDepartment of Diagnostic Radiology, Graduate School of Biomedical Sciences, Hiroshima University, Kasumi 1-2-3 Minami-ku, 734-8551, Hiroshima, Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundTo investigate optimizing the use of different beam shaping filters (viz. small, medium and large) when using different tube voltages during the newborn chest computed tomography (CT) on a GE Lightspeed VCT scanner.

methodsWe used pediatric anthropomorphic phantoms with a 64 detector-row CT scanner while scanning the chest. A real-time skin dosimeter (RD - 1000; Trek Corporation, Kanagawa, Japan) was positioned into the phantom center of the body, the surface of the body back, and the right and left mammary glands. We performed and compared six scan protocols using small, medium, and large beam shaping filters at 80 and 120 kVp protocols.

resultThere were no significant differences in the image noise for the chest scan among the different beam shaping filters. By using the large beam shaping filter at 80 kVp, it was possible to reduce the exposure dose by 5% in comparison with the small beam shaping filter, and by 10% in comparison with the medium beam shaping filter. By using the large beam shaping filter at 120 kVp, it was possible to reduce the exposure dose by 15% in comparison with the small beam shaping filter and by 20% in comparison with the medium beam shaping filter (p < 0.01).

conclusionThe large beam shaping filter had the most dose reduction effect during newborn chest CT on a GE Lightspeed VCT scanner. The additional copper filtration being present in the large bowtie filter of the GE Lightspeed CT scanner when using different tube voltages is more effective in reducing radiation exposure in children.

Indexed as

FiltrationTomography, X-Ray ComputedChildHumansInfant, NewbornPhantoms, ImagingRadiation DosageTomography Scanners, X-Ray ComputedBeam shaping filterChest CTComputed tomographyNewborn

Identifiers

PMID36633769

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.