Evidence map›Paper›PMID 24553830›Full record

ArticleJapanese journal of radiology2014

Comparison of air kerma between C-arm CT and 64-multidetector-row CT using a phantom.

Seiki Hosokawa, Nobuyuki Kawai, Morio Sato, Hiroki Minamiguchi, Motoki Nakai, Kazuhiro Murotani, Tadayoshi Nishioku, Shintaro Shirai, Tetsuo Sonomura

Abstract readComparative Study
PubMed Publisher
In one paragraph

Article in Japanese journal of radiology, 2014. 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

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

1 citing paper in PubMed.

  1. Article
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

9 authors.

Seiki HosokawaDepartment of Radiology, Wakayama Medical University, 811-1 Kimiidera, Wakayamashi, Wakayama, 641-8510, Japan.
Nobuyuki Kawai
Morio Sato
Hiroki Minamiguchi
Motoki Nakai
Kazuhiro Murotani
Tadayoshi Nishioku
Shintaro Shirai
Tetsuo Sonomura

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo compare air kerma after scanning a phantom with C-arm CT and with 64-multidetector row CT (64MDCT). MATERIALS AND

methodsA phantom was scanned using parameters based on data of ten patients with hepatocellular carcinoma who had C-arm CT during hepatic arteriography and 64MDCT during arterial portography. Radiation monitors were used to measure air kerma ten times at each of five points: the center (A), top (B), left side (C), bottom (D), and right side (E).

resultsFor C-arm CT vs. 64MDCT, air kerma after scanning was 10.5 ± 0.2 vs. 6.4 ± 0.0 for A, 1.5 ± 0.0 vs. 11.6 ± 0.2 for B, 37.1 ± 0.2 vs. 11.1 ± 0.1 for C, 55.6 ± 1.0 vs. 10.6 ± 0.1 for D, and 40.5 ± 0.5 vs. 11.7 ± 0.1 for E, respectively. Air kerma for A, B, C, D, and E was 1.64, 0.13, 3.34, 5.24, and 3.46 times greater for C-arm CT than for 64MDCT, respectively.

conclusionUsing the same scanning parameters as for clinical cases, air kerma values were greater with C-arm CT than with 64MDCT; at the dorsal side of the phantom, they were 5.24 times greater with C-arm CT compared with 64MDCT.

Indexed as

Phantoms, ImagingAgedAged, 80 and overCarcinoma, HepatocellularFemaleHumansLiver NeoplasmsMaleMultidetector Computed TomographyRadiation DosageRadiometryTomography, X-Ray Computed

Identifiers

PMID24553830

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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.