Evidence map›Paper›PMID 33250055›Full record

ArticleJournal of cardiovascular magnetic resonance : official journal of the Society for Cardiovascular Magnetic Resonance2020

Is a timely assessment of the hematocrit necessary for cardiovascular magnetic resonance-derived extracellular volume measurements?

Mao-Yuan Su, Yu-Sen Huang, Emi Niisato, Kelvin Chow, Jyh-Ming Jimmy Juang, Cho-Kai Wu, Hsi-Yu Yu, Lian-Yu Lin, Shun-Chung Yang, Yeun-Chung Chang

Open access · goldAbstract readComparative Study
In one paragraph

Article in Journal of cardiovascular magnetic resonance : official journal of the Society for Cardiovascular Magnetic Resonance, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed, 1 pooled it
0.9field-weighted citation impact, top 22% 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

15 citing papers in PubMed, 1 synthesis or guideline pooled it, 23 citations in OpenAlex.

  1. Society for Cardiovascular Magnetic Resonance reference values ("normal values") in cardiovascular magnetic resonance: 2025 update.Journal of cardiovascular magnetic resonance : official journal of the Society for Cardiovascular Magnetic Resonance · 2025
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  14. Quantification of myocardial extracellular volume without blood sampling.European heart journal. Imaging methods and practice · 2023
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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

10 authors at 2 institutions in 1 country.

Mao-Yuan SuDepartment of Medical Imaging, National Taiwan University Hospital, No.7, Chung-Shan South Road, Taipei, 100, Taiwan.ORCID 0000-0002-6699-2298
Yu-Sen HuangDepartment of Medical Imaging, National Taiwan University Hospital, No.7, Chung-Shan South Road, Taipei, 100, Taiwan.
Emi NiisatoSiemens Healthcare Limited, Taipei, Taiwan.
Kelvin ChowSiemens Medical Solutions USA Inc., Chicago, IL, USA.
Jyh-Ming Jimmy JuangCardiovascular Center and Division of Cardiology, Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan.
Cho-Kai WuCardiovascular Center and Division of Cardiology, Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan.
Hsi-Yu YuDepartment of Surgery, National Taiwan University Hospital, Taipei, Taiwan.
Lian-Yu LinCardiovascular Center and Division of Cardiology, Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan.
Shun-Chung YangDepartment of Medical Imaging, National Taiwan University Hospital, No.7, Chung-Shan South Road, Taipei, 100, Taiwan.
Yeun-Chung ChangDepartment of Medical Imaging, National Taiwan University Hospital, No.7, Chung-Shan South Road, Taipei, 100, Taiwan. ycc5566@ntu.edu.tw.
National Taiwan University Hospital · TWYuanpei University · TW

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundCardiovascular magnetic resonance (CMR)-derived extracellular volume (ECV) requires a hematocrit (Hct) to correct contrast volume distributions in blood. However, the timely assessment of Hct can be challenging and has limited the routine clinical application of ECV. The goal of the present study was to evaluate whether ECV measurements lead to significant error if a venous Hct was unavailable on the day of CMR.

methods109 patients with CMR T1 mapping and two venous Hcts (Hct

resultsECV measured using Hct

conclusionsVenous Hcts measured on a different day from that of the CMR examination can still be used to measure ECV. ECV

Indexed as

HematocritMagnetic Resonance ImagingAdolescentAdultAgedAged, 80 and overContrast MediaFemaleFibrosisHeart DiseasesHumansMaleMeglumineMiddle AgedMyocardiumOrganometallic CompoundsContrast Mediagadoterate meglumineMeglumineOrganometallic CompoundsCardiovascular magnetic resonanceExtracellular volume fractionHematocritT1 mapping

Identifiers

PMID33250055
PMCPMC7702722
OpenAlexW3108809515

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.