Evidence map›Paper›PMID 26403615›Full record

ArticleJapanese journal of radiology2015

Evaluation of the quality of CT images acquired with the single energy metal artifact reduction (SEMAR) algorithm in patients with hip and dental prostheses and aneurysm embolization coils.

Akinaga Sonoda, Norihisa Nitta, Noritoshi Ushio, Yukihiro Nagatani, Noriaki Okumura, Hideji Otani, Kiyoshi Murata

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Article in Japanese journal of radiology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing 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

20 citing papers in PubMed.

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  11. Combined application of single-energy metal artifact reduction and reconstruction techniques in patients with Cochlear implants.Journal of otolaryngology - head & neck surgery = Le Journal d'oto-rhino-laryngologie et de chirurgie cervico-faciale · 2020
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

7 authors.

Akinaga SonodaDepartment of Radiology, Shiga University of Medical Science, Setatsukinowa-cho, Otsu, Shiga, 520-2192, Japan. akinaga@belle.shiga-med.ac.jp.
Norihisa NittaDepartment of Orthopedic Surgery, Shiga University of Medical Science, Setatsukinowa-cho, Otsu, Shiga, 520-2192, Japan. r34nitta@yahoo.co.jp.
Noritoshi UshioDepartment of Orthopedic Surgery, Shiga University of Medical Science, Setatsukinowa-cho, Otsu, Shiga, 520-2192, Japan. ushio@belle.shiga-med.ac.jp.
Yukihiro NagataniDepartment of Orthopedic Surgery, Shiga University of Medical Science, Setatsukinowa-cho, Otsu, Shiga, 520-2192, Japan. yatsushi@belle.shiga-med.ac.jp.
Noriaki OkumuraDepartment of Orthopedic Surgery, Shiga University of Medical Science, Setatsukinowa-cho, Otsu, Shiga, 520-2192, Japan. noriaki@belle.shiga-med.ac.jp.
Hideji OtaniDepartment of Orthopedic Surgery, Shiga University of Medical Science, Setatsukinowa-cho, Otsu, Shiga, 520-2192, Japan. otani@belle.shiga-med.ac.jp.
Kiyoshi MurataDepartment of Orthopedic Surgery, Shiga University of Medical Science, Setatsukinowa-cho, Otsu, Shiga, 520-2192, Japan. murata@belle.shiga-med.ac.jp.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeWe compared the quality of the images acquired with single energy metal artifact reduction (SEMAR) on CT scans of three different human body areas. MATERIALS AND

methodsOur institutional review board approved the study protocol. CT studies of 58 patients (hip prosthesis, n = 20; iliac artery aneurysm embolization, n = 20; dental prosthesis, n = 18) were retrospectively reconstructed using interactive reconstruction (IR) and IR plus SEMAR. Two radiologists independently evaluated the images for the reduction of metal artifacts at three sites, i.e., 0-1, 1-5, and 5-10 cm from their edges, and recorded their findings on a 100-mm-long line that corresponded to the Likert scale and ranged from 0 (invisible) to 100 mm (clearly visible). The standard deviation in Hounsfield units was used as the noise assessment tool. Statistical analysis was performed with the t test and the Wilcoxon signed-rank test.

resultsThe image quality of scans of hip prostheses and metal embolization coils was significantly improved when SEMAR was used (p < 0.05). On scans of dental prostheses, SEMAR did not contribute significantly, especially in the area 1 cm from the edge of the implant.

conclusionVisual subjective evaluation showed that SEMAR improved the image quality.

Indexed as

AlgorithmsArtifactsProstheses and ImplantsAneurysmDental ProsthesisEmbolization, TherapeuticHip ProsthesisHumansMetalsRadiographic Image EnhancementRadiographic Image Interpretation, Computer-AssistedReproducibility of ResultsRetrospective StudiesSensitivity and SpecificityTomography, X-Ray ComputedMetalsArtifact reductionMetal implantsNoise

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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.