Evidence map›Paper›PMID 31467240›Full record

ArticleAJNR. American journal of neuroradiology2019

Quantitative Analysis of Spinal Canal Areas in the Lumbar Spine: An Imaging Informatics and Machine Learning Study.

B Gaonkar, D Villaroman, J Beckett, C Ahn, M Attiah, D Babayan, J P Villablanca, N Salamon, A Bui, L Macyszyn

Abstract read
In one paragraph

Article in AJNR. American journal of neuroradiology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed, 3 pooled it
–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

17 citing papers in PubMed, 3 syntheses or guidelines pooled it.

  1. Artificial intelligence for segmentation and classification in lumbar spinal stenosis: an overview of current methods.European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society · 2025
    Pooled it
  2. Pooled it
  3. Artificial Intelligence and Computer Vision in Low Back Pain: A Systematic Review.International journal of environmental research and public health · 2021
    Pooled it
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  15. Vertebrae, IVD and spinal canal boundary extraction on MRI, utilizing CT-trained active shape models.International journal of computer assisted radiology and surgery · 2021
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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.

B GaonkarFrom the Departments of Neurosurgery (B.G., D.V., J.B., C.A., M.A., D.B., L.M.) bilwaj@gmail.com.ORCID 0000-0001-8827-8063
D VillaromanFrom the Departments of Neurosurgery (B.G., D.V., J.B., C.A., M.A., D.B., L.M.).ORCID 0000-0003-1475-1238
J BeckettFrom the Departments of Neurosurgery (B.G., D.V., J.B., C.A., M.A., D.B., L.M.).ORCID 0000-0002-2392-0526
C AhnFrom the Departments of Neurosurgery (B.G., D.V., J.B., C.A., M.A., D.B., L.M.).ORCID 0000-0003-3505-7915
M AttiahFrom the Departments of Neurosurgery (B.G., D.V., J.B., C.A., M.A., D.B., L.M.).ORCID 0000-0001-8609-7883
D BabayanFrom the Departments of Neurosurgery (B.G., D.V., J.B., C.A., M.A., D.B., L.M.).ORCID 0000-0001-5994-5656
J P VillablancaRadiology (J.P.V., N.S., A.B., L.M.), University of California, Los Angeles, Los Angeles, California.ORCID 0000-0002-7066-0341
N SalamonRadiology (J.P.V., N.S., A.B., L.M.), University of California, Los Angeles, Los Angeles, California.ORCID 0000-0002-3520-9467
A BuiRadiology (J.P.V., N.S., A.B., L.M.), University of California, Los Angeles, Los Angeles, California.ORCID 0000-0002-4702-1373
L MacyszynFrom the Departments of Neurosurgery (B.G., D.V., J.B., C.A., M.A., D.B., L.M.).ORCID 0000-0002-3706-2796

Funding

Developing Database and Software infrastructure for Quantitative Radiologic Analysis of Lumbar RadiculopathyR21EB026665 · NIBIB · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI MACYSZYN, LUKE · 2019 to 2020
$429k
NIBIB NIH HHS R21 EB026665
6 · The paper itself

Abstract

background and purposeQuantitative imaging biomarkers have not been established for the diagnosis of spinal canal stenosis. This work aimed to lay the groundwork to establish such biomarkers by leveraging the developments in machine learning and medical imaging informatics. MATERIALS AND

methodsMachine learning algorithms were trained to segment lumbar spinal canal areas on axial views and intervertebral discs on sagittal views of lumbar MRIs. These were used to measure spinal canal areas at each lumbar level (L1 through L5). Machine-generated delineations were compared with 2 sets of human-generated delineations to validate the proposed techniques. Then, we use these machine learning methods to delineate and measure lumbar spinal canal areas in a normative cohort and to analyze their variation with respect to age, sex, and height using a variable-intercept mixed model.

resultsWe established that machine-generated delineations are comparable with human-generated segmentations. Spinal canal areas as measured by machine are statistically significantly correlated with height (

conclusionsOur machine learning methodology demonstrates that this important anatomic structure can be accurately detected and quantitatively measured without human input in a manner comparable with that of human raters. Anatomic deviations measured against the normative model established here could be used to flag spinal stenosis in the future.

Indexed as

Machine LearningAdultAgedFemaleHumansLumbar VertebraeMagnetic Resonance ImagingMaleMiddle AgedReference ValuesSpinal CanalSpinal Stenosis

Identifiers

PMID31467240
PMCPMC7048444

What OpenQuestion holds

Textmetadata
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.