Evidence map›Paper›PMID 30801895›Full record

Observational studyJournal of magnetic resonance imaging : JMRI2019

Comparing invasive with MRI-derived intracranial pressure measurements in healthy elderly and brain trauma cases: A pilot study.

Ritambhar Burman, Ashish H Shah, Ronald Benveniste, George Jimsheleishvili, Sang H Lee, David Loewenstein, Noam Alperin

Open access · greenAbstract readComparative StudyObservational Study
In one paragraph

Observational study in Journal of magnetic resonance imaging : JMRI, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
1.9field-weighted citation impact, top 15% 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

12 citing papers in PubMed, 21 citations in OpenAlex.

  1. Trial
  2. Article
  3. Review
  4. Article
  5. Article
  6. Article
  7. Article
  8. Review
  9. Article
  10. Non-Invasive Intracranial Pressure Monitoring.Journal of clinical medicine · 2023
    Review
  11. Non-invasive detection of intracranial pressure related to the optic nerve.Quantitative imaging in medicine and surgery · 2021
    Review
  12. 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

7 authors at 1 institution in 2 countries.

Ritambhar BurmanUniversity of Miami, Biomedical Engineering Department, Coral Gables, Florida, USA.ORCID 0000-0002-9090-7858
Ashish H ShahUniversity of Miami, Department of Neurological Surgery, Florida, USA.
Ronald BenvenisteUniversity of Miami, Department of Neurological Surgery, Florida, USA.
George JimsheleishviliUniversity of Miami, Department of Neurological Surgery, Florida, USA.
Sang H LeeUniversity of Miami, Radiology Department, Miami, Florida, USA.
David LoewensteinUniversity of Miami, Department of Psychiatry and Behavioral Sciences, Florida, USA.
Noam AlperinUniversity of Miami, Biomedical Engineering Department, Coral Gables, Florida, USA.
University of Miami · US

Funding

Novel Detection of Early Cognitive and Functional Impairment in the ElderlyR01AG047649 · NIA · UNIVERSITY OF MIAMI SCHOOL OF MEDICINE · PI LOEWENSTEIN, DAVID · 2015 to 2019
$2.7M
Noninvasive Measurements of Intracranial PressureR41NS046185 · NINDS · ALPERIN NONINVASIVE DIAGNOSTICS, INC. · PI ALPERIN, NOAM · 2004 to 2004
$106k
NIA NIH HHS R01 AG047649NINDS NIH HHS R41 NS046185
6 · The paper itself

Abstract

backgroundIntracranial pressure (ICP) is an important physiological parameter in several neurological disorders. Considerable effort has been made to measure ICP noninvasively. MR-based ICP (MR-ICP) is a nonempirical method based on principles of cerebrospinal fluid (CSF) physiology, where ICP is obtained from measurements of blood and CSF flows to and from the cranium during the cardiac cycle. PURPOSE: To compare MR-ICP with invasive ICP measurements obtained using lumbar puncture (LP) or external ventricular drainage (EVD). STUDY TYPE: Prospective, cross-sectional, observational study. SUBJECTS: Ten cognitively healthy elderly subjects (age 69.6 ± 6.6 years; seven females) and six brain trauma patients (age 36.8 ± 19.7 years; two females). FIELD STRENGTH: Velocity encoding cine phase-contrast at 1.5 T and 3 T. ASSESSMENT: MR-ICP and craniospinal compliance distribution were estimated from arterial inflow and venous outflow to and from cranium, and craniospinal CSF flow at the upper cervical region, measured using cine phase contrast MRI. LP (done 177 ± 163 days after scan) and EVD measurements (at the time of scan) were performed in lateral recumbent and supine positions, respectively. STATISTICAL TESTS: Linear regression was used to assess the relationships of MR-ICP with invasive ICP, and the dependency of these measurements on age, weight, height, and BMI. A Shapiro-Wilks test and Bland-Altman plot were respectively used to evaluate the normality and agreement between these two pressure distributions. Student's t-test was used throughout the analysis to compare differences between the EVD and LP cohorts.

resultsIn the combined cohort, MR-ICP and invasive ICP were positively correlated (r = 0.95, P < 0.001), with invasive ICP being higher than MR-ICP by 2.2 mmHg on average. In the healthy cohort, the cranial contribution to total craniospinal compliance was negatively correlated with MR-ICP (r = -0.90, P < 0.001). DATA

conclusionMR-ICP provides a reliable estimate of ICP, with 14 out of 16 datapoints within the clinically acceptable error. Craniospinal compliance distribution plays a role in modulating ICP in supine position. LEVEL OF EVIDENCE: 3 Technical Efficacy: Stage 2 J. Magn. Reson. Imaging 2019;50:975-981.

Indexed as

AdultAgedBrainBrain Injuries, TraumaticCross-Sectional StudiesFemaleHumansIntracranial PressureMagnetic Resonance ImagingMaleMiddle AgedPilot ProjectsProspective StudiesReproducibility of ResultsYoung Adultcraniospinal systemEVDICPlumbar punctureMRI

Identifiers

PMID30801895
PMCPMC7418078
OpenAlexW2917836564

What OpenQuestion holds

Textmetadata
LicenceTDM
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.