Evidence map›Paper›PMID 34431247›Full record

ArticleKorean journal of radiology2021

Effects of Contrast Phases on Automated Measurements of Muscle Quantity and Quality Using CT.

Dong Wook Kim, Kyung Won Kim, Yousun Ko, Taeyong Park, Jeongjin Lee, Jung Bok Lee, Jiyeon Ha, Hyemin Ahn, Yu Sub Sung, Hong-Kyu Kim

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Korean journal of radiology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing 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

14 citing papers in PubMed.

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  14. Looking Ahead to 2022 for theKorean journal of radiology · 2022
    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

10 authors.

Dong Wook KimDepartment of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea.ORCID 0000-0001-7887-657X
Kyung Won KimDepartment of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea. medimash@gmail.com.ORCID 0000-0002-1532-5970
Yousun KoBiomedical Research Center, Asan Institute for Life Sciences, Asan Medical Center, Seoul, Korea.ORCID 0000-0002-2181-9555
Taeyong ParkDepartment of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea.ORCID 0000-0002-7523-8975
Jeongjin LeeSchool of Computer Science and Engineering, Soongsil University, Seoul, Korea.ORCID 0000-0001-9676-271X
Jung Bok LeeDepartment of Clinical Epidemiology and Biostatistics, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea.ORCID 0000-0002-1420-9484
Jiyeon HaDepartment of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea.ORCID 0000-0003-3496-4134
Hyemin AhnDepartment of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea.ORCID 0000-0002-8151-8949
Yu Sub SungClinical Research Center, Asan Medical Center, Seoul, Korea.ORCID 0000-0002-9215-735X
Hong-Kyu KimHealth Screening & Promotion Center, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea.ORCID 0000-0002-7606-3521

Funding

Korea Health Industry Development Institute HI18C1216
6 · The paper itself

Abstract

objectiveMuscle quantity and quality can be measured with an automated system on CT. However, the effects of contrast phases on the muscle measurements have not been established, which we aimed to investigate in this study. MATERIALS AND

methodsMuscle quantity was measured according to the skeletal muscle area (SMA) measured by a convolutional neural network-based automated system at the L3 level in 89 subjects undergoing multiphasic abdominal CT comprising unenhanced phase, arterial phase, portal venous phase (PVP), or delayed phase imaging. Muscle quality was analyzed using the mean muscle density and the muscle quality map, which comprises normal and low-attenuation muscle areas (NAMA and LAMA, respectively) based on the muscle attenuation threshold. The SMA, mean muscle density, NAMA, and LAMA were compared between PVP and other phases using paired

resultsAll indices showed significant differences between PVP and other phases (

conclusionSMA was less affected by the contrast phases. However, the muscle quality measurements changed with the contrast phases to greater extents and would require a standardization of the contrast phase for reliable measurement.

Indexed as

Muscle, SkeletalTomography, X-Ray ComputedArteriesContrast MediaHumansPortal VeinContrast MediaBody compositionContrast phaseImagingMuscleSarcopenia

Identifiers

PMID34431247
PMCPMC8546132

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Registered trials

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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.