Evidence map›Paper›PMID 33449434›Full record

ArticleJournal of applied clinical medical physics2021

Fetal radiation dose of four tube voltages in abdominal CT examinations during pregnancy: A phantom study.

Yuta Matsunaga, Tomonobu Haba, Masanao Kobayashi, Shoichi Suzuki, Yasuki Asada, Koichi Chida

Open access · goldAbstract read
In one paragraph

Article in Journal of applied clinical medical physics, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
1.5field-weighted citation impact, top 18% of its field
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

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.

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

13 citing papers in PubMed, 19 citations in OpenAlex.

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4 · The record

Corrections and comments

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

6 authors at 2 institutions in 1 country.

Yuta MatsunagaDepartment of Imaging, Nagoya Kyoritsu Hospital, Nagoya, Aichi, Japan.
Tomonobu HabaSchool of Health Sciences, Fujita Health University, Toyoake, Aichi, Japan.
Masanao KobayashiSchool of Health Sciences, Fujita Health University, Toyoake, Aichi, Japan.ORCID https://orcid.org/0000-0003-0273-0755
Shoichi SuzukiSchool of Health Sciences, Fujita Health University, Toyoake, Aichi, Japan.
Yasuki AsadaSchool of Health Sciences, Fujita Health University, Toyoake, Aichi, Japan.ORCID https://orcid.org/0000-0002-9559-4811
Koichi ChidaDepartment of Radiological Technology, Faculty of Health Sciences, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan.
Fujita Health University · JPTohoku University · JP

Funding

Japan Society for the Promotion of Science KAKENHI 19 K17223
6 · The paper itself

Abstract

This study aimed to compare the dose and noise level of four tube voltages in abdominal computerized tomography (CT) examinations in different abdominal circumference sizes of pregnant women. Fetal radiation doses were measured with two anthropomorphic pregnant phantoms and real-time dosimeters of photoluminescence sensors using four tube voltages for abdominal CT. The noise level was measured at the abdomen of two anthropomorphic pregnant phantoms. In the large pregnant phantom, the mean fetal doses performed using 120 and 135 kV were statistically significantly lower than the lower tube voltages (P < 0.05). In the small pregnant phantom, the mean fetal dose performed by 100, 120, and 135 kV was significantly lower than the lowest tube voltage tested (P < 0.05). The ratios of the peripheral mean dose to the centric mean dose showed that the ratios of 80 kV were the highest and those for 135 kV were the lowest in both pregnant phantoms. The ratios of the peripheral mean dose to the centric mean dose decreased as the tube voltage increased. Compared with low tube voltages, high tube voltages such as 120 and 135 kV could reduce radiation doses to the fetus without compromising the image uniformity in abdominal CT examinations during pregnancy. On low tube voltage protocols, the dose near the maternal skin surface may be increased in large pregnant women because of reduced penetration of the x rays.

Indexed as

AbdomenTomography, X-Ray ComputedFemaleFetusHumansPhantoms, ImagingPregnancyRadiation Dosagefetal CTfetal radiation dosepregnant modeltube voltage

Identifiers

PMID33449434
PMCPMC7882097
OpenAlexW3120213603

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.