Evidence map›Paper›PMID 34019101›Full record

ArticleClinical neuroradiology2021

Measuring the Head Circumference on MRI in Children: an Interrater Study.

Alexander Rau, Theo Demerath, Nico Kremers, Matthias Eckenweiler, Rieka von der Warth, Horst Urbach

Open access · hybridAbstract read
In one paragraph

Article in Clinical neuroradiology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
1.7field-weighted citation impact, top 16% 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

6 citing papers in PubMed, 7 citations in OpenAlex.

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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

6 authors at 2 institutions in 1 country.

Alexander RauDept. of Neuroradiology, University Medical Center Freiburg, Freiburg, Germany. alexander.rau@uniklinik-freiburg.de.ORCID http://orcid.org/0000-0001-5881-6043
Theo DemerathDept. of Neuroradiology, University Medical Center Freiburg, Freiburg, Germany.
Nico KremersDept. of Neuroradiology, University Medical Center Freiburg, Freiburg, Germany.
Matthias EckenweilerDept. of Neuropediatrics and Muscle Disorders, University Medical Center Freiburg, Freiburg, Germany.
Rieka von der WarthInstitute of Medical Biometry and Statistics, Section of Health Care Research and Rehabilitation Research, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany.
Horst UrbachDept. of Neuroradiology, University Medical Center Freiburg, Freiburg, Germany.
University Medical Center Freiburg · DEUniversity of Freiburg · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeThe head circumference is typically used as a surrogate parameter for the development of the central nervous system and intracranial structures and is an important clinical parameter in neuropediatrics. As magnetic resonance images (MRI) can be freely zoomed, visual analysis of the head size often relies on impressions, such as the craniofacial ratio or a simplified gyral pattern. Aim of this study was to validate an MRI-based method to measure the head circumference.

methodsHead circumferences of 85 children (41 microcephalies, 22 macrocephalies and 22 normal controls; 47 male, mean age 3.22 ± 2.45 years, range 0.19-10.42 years) were retrospectively measured using sagittal 3D-T1w (MPRAGE) data sets. Three readers independently placed an ovoid region of interest in an axial plane starting from the supraorbital bulge and covering the largest supra-auricular head circumference. Clinical measurements of the head circumference taken within an acceptable period served for comparative purposes. Reliability was assessed by calculating the total error of measurement (TEM) and the intraclass correlation coefficient (ICC).

resultsA close correlation was found between MRI-based and clinical measurements. The interrater reliability was excellent (ICC 0.985, 95% confidence interval 0.952-0.993). Absolute TEM ranged from 0.47-0.75, resulting in relative TEM ranging from 1.0-1.6%. Thus, TEMs were classified as acceptable. The mean accuracy of MRI-based measurements was high at 0.94.

conclusionThe head circumference can be reliably determined with a simple measurement on 3D sequences using multiplanar reformations. This approach may help to diagnose microcephaly and macrocephaly, especially when the head circumference is not reported by the referring physician.

Indexed as

Magnetic Resonance ImagingMicrocephalyCephalometryChildChild, PreschoolHeadHumansInfantMaleReproducibility of ResultsRetrospective StudiesCephalometryMacrocephalyMegalocephalyMicrocephalyNeuropediatrics

Identifiers

PMID34019101
PMCPMC8648705
OpenAlexW3161014583

What OpenQuestion holds

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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.