Evidence map›Paper›PMID 31491834›Full record

ArticleNeuroImage. Clinical2019

Finding maximally disconnected subnetworks with shortest path tractography.

Clint Greene, Matthew Cieslak, Lukas J Volz, Lukas Hensel, Christian Grefkes, Ken Rose, Scott T Grafton

Abstract read
In one paragraph

Article in NeuroImage. Clinical, 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
–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

12 citing papers in PubMed.

  1. Trial
  2. Article
  3. Article
  4. The elusive metric of lesion load.Brain structure & function · 2023
    Review
  5. Preserved anatomical bypasses predict variance in language functions after stroke.Cortex; a journal devoted to the study of the nervous system and behavior · 2022
    Article
  6. Review
  7. Article
  8. Article
  9. Article
  10. Article
  11. 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.

Clint GreeneSignal Compression Lab, Department of Electrical and Computer Engineering, University of California, Santa Barbara, Santa Barbara, CA, USA. Electronic address: clint@ece.ucsb.edu.
Matthew CieslakDepartment of Psychological and Brain Sciences, University of California, Santa Barbara, Santa Barbara, CA, USA.
Lukas J VolzDepartment of Neurology, University of Cologne, Cologne, Germany.
Lukas HenselDepartment of Neurology, University of Cologne, Cologne, Germany.
Christian GrefkesDepartment of Neurology, University of Cologne, Cologne, Germany.
Ken RoseSignal Compression Lab, Department of Electrical and Computer Engineering, University of California, Santa Barbara, Santa Barbara, CA, USA.
Scott T GraftonDepartment of Psychological and Brain Sciences, University of California, Santa Barbara, Santa Barbara, CA, USA.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Connectome-based lesion symptom mapping (CLSM) can be used to relate disruptions of brain network connectivity with clinical measures. We present a novel method that extends current CLSM approaches by introducing a fast reliable and accurate way for computing disconnectomes, i.e. identifying damaged or lesioned connections. We introduce a new algorithm that finds the maximally disconnected subgraph containing regions and region pairs with the greatest shared connectivity loss. After normalizing a stroke patient's segmented MRI lesion into template space, probability weighted structural connectivity matrices are constructed from shortest paths found in white matter voxel graphs of 210 subjects from the Human Connectome Project. Percent connectivity loss matrices are constructed by measuring the proportion of shortest-path probability weighted connections that are lost because of an intersection with the patient's lesion. Maximally disconnected subgraphs of the overall connectivity loss matrix are then derived using a computationally fast greedy algorithm that closely approximates the exact solution. We illustrate the approach in eleven stroke patients with hemiparesis by identifying expected disconnections of the corticospinal tract (CST) with cortical sensorimotor regions. Major disconnections are found in the thalamus, basal ganglia, and inferior parietal cortex. Moreover, the size of the maximally disconnected subgraph quantifies the extent of cortical disconnection and strongly correlates with multiple clinical measures. The methods provide a fast, reliable approach for both visualizing and quantifying the disconnected portion of a patient's structural connectome based on their routine clinical MRI, without reliance on concomitant diffusion weighted imaging. The method can be extended to large databases of stroke patients, multiple sclerosis or other diseases causing focal white matter injuries helping to better characterize clinically relevant white matter lesions and to identify biomarkers for the recovery potential of individual patients.

Indexed as

AgedAlgorithmsConnectomeDiffusion Tensor ImagingFemaleHumansMaleMiddle AgedNerve NetNeuroimagingStrokeWhite MatterBrain injuryBrain networksConnectomesDiffusion MRIDisconnectionDisconnectomeGraphsLesion symptom mappingSpatial normalizationTractography

Identifiers

PMID31491834
PMCPMC6627647

What OpenQuestion holds

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LicenceCC BY
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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.