Evidence map›Paper›PMID 32193894›Full record

ArticleKorean journal of radiology2020

Perceived Dark Rim Artifact in First-Pass Myocardial Perfusion Magnetic Resonance Imaging Due to Visual Illusion.

Taehoon Shin, Krishna S Nayak

Open access · hybridAbstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Korean journal of radiology, 2020. 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, top 98% 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

1 citing paper in PubMed, 2 citations in OpenAlex.

  1. Comprehensive review of artifacts in cardiac MRI and their mitigation.The international journal of cardiovascular imaging · 2024
    Review
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

2 authors at 2 institutions in 2 countries.

Taehoon ShinDivision of Mechanical and Biomedical Engineering, Ewha Womans University, Seoul, Korea.ORCID 0000-0003-1780-573X
Krishna S NayakMing Hsieh Department of Electrical Engineering, University of Southern California, Los Angeles, CA, USA.ORCID 0000-0001-5735-3550
Ewha Womans University · KRUniversity of Southern California · US

Funding

NON-CONTRAST-ENHANCED PERIPHERAL MR ANGIOGRAPHYR01HL135500 · NHLBI · UNIVERSITY OF MARYLAND BALTIMORE · PI RAJAGOPALAN, SANJAY, WILSON, DAVID LYNN · 2017 to 2020
$1.5M
NHLBI NIH HHS R01 HL135500
6 · The paper itself

Abstract

objectiveTo demonstrate that human visual illusion can contribute to sub-endocardial dark rim artifact in contrast-enhanced myocardial perfusion magnetic resonance images. MATERIALS AND

methodsNumerical phantoms were generated to simulate the first-passage of contrast agent in the heart, and rendered in conventional gray scale as well as in color scale with reduced luminance variation. Cardiac perfusion images were acquired from two healthy volunteers, and were displayed by the same gray and color scales used in the numerical study. Before and after k-space windowing, the left ventricle (LV)-myocardium boarders were analyzed visually and quantitatively through intensity profiles perpendicular the boarders.

resultsk-space windowing yielded monotonically decreasing signal intensity near the LV-myocardium boarder in the phantom images, as confirmed by negative finite difference values near the board ranging -1.07 to -0.14. However, the dark band still appears, which is perceived by visual illusion. Dark rim is perceived in the

conclusionVisual illusion is another potential cause of dark rim artifact in contrast-enhanced myocardial perfusion MRI as demonstrated by illusory rim perceived in the absence of quantitative intensity undershoot.

Indexed as

ArtifactsContrast MediaHeartHeart VentriclesHumansImage Interpretation, Computer-AssistedMagnetic Resonance ImagingMyocardial Perfusion ImagingContrast MediaDark rim artifactMach bandMyocardial perfusion MRIVisual illusion

Identifiers

PMID32193894
PMCPMC7082651
OpenAlexW3009738107

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.