Evidence map›Paper›PMID 33756031›Full record

Observational studyEpilepsia2021

Automated analysis of cortical volume loss predicts seizure outcomes after frontal lobectomy.

Alexander C Whiting, Marcia Morita-Sherman, Manshi Li, Deborah Vegh, Brunno Machado de Campos, Fernando Cendes, Xiaofeng Wang, William Bingaman, Lara E Jehi

Abstract readObservational Study
In one paragraph

Observational study in Epilepsia, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing 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

11 citing papers in PubMed.

  1. Article
  2. Review
  3. Seminars in epileptology: Presurgical epilepsy evaluation.Epileptic disorders : international epilepsy journal with videotape · 2025
    Review
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Review
  11. 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

9 authors.

Alexander C WhitingCleveland Clinic Epilepsy Center, Cleveland Clinic Foundation, Cleveland, OH, USA.ORCID 0000-0002-4585-5219
Marcia Morita-ShermanCleveland Clinic Epilepsy Center, Cleveland Clinic Foundation, Cleveland, OH, USA.
Manshi LiDepartment of Quantitative Health Sciences, Cleveland Clinic Foundation, Cleveland, OH, USA.
Deborah VeghCleveland Clinic Epilepsy Center, Cleveland Clinic Foundation, Cleveland, OH, USA.
Brunno Machado de CamposDepartment of Neurology, University of Campinas UNICAMP, Campinas, Brazil.
Fernando CendesDepartment of Neurology, University of Campinas UNICAMP, Campinas, Brazil.ORCID 0000-0001-9336-9568
Xiaofeng WangDepartment of Quantitative Health Sciences, Cleveland Clinic Foundation, Cleveland, OH, USA.
William BingamanCleveland Clinic Epilepsy Center, Cleveland Clinic Foundation, Cleveland, OH, USA.
Lara E JehiCleveland Clinic Epilepsy Center, Cleveland Clinic Foundation, Cleveland, OH, USA.ORCID 0000-0002-8041-6377

Funding

A Nomogram to Predict Seizure Outcomes After Resective Epilepsy SurgeryR01NS097719 · NINDS · CLEVELAND CLINIC LERNER COM-CWRU · PI JEHI, LARA · 2017 to 2021
$3.6M
NINDS NIH HHS R01 NS097719
6 · The paper itself

Abstract

objectivePatients undergoing frontal lobectomy demonstrate lower seizure-freedom rates than patients undergoing temporal lobectomy and several other resective interventions. We attempted to utilize automated preoperative quantitative analysis of focal and global cortical volume loss to develop predictive volumetric indicators of seizure outcome after frontal lobectomy.

methodsNinety patients who underwent frontal lobectomy were stratified based on seizure freedom at a mean follow-up time of 3.5 (standard deviation [SD] 2.5) years. Automated quantitative analysis of cortical volume loss organized by distinct brain region and laterality was performed on preoperative T1-weighted magnetic resonance imaging (MRI) studies. Univariate statistical analysis was used to select potential predictors of seizure freedom. Backward variable selection and multivariate logistical regression were used to develop models to predict seizure freedom.

resultsForty-eight of 90 (53.3%) patients were seizure-free at the last follow-up. Several frontal and extrafrontal brain regions demonstrated statistically significant differences in both volumetric cortical volume loss and volumetric asymmetry between the left and right sides in the seizure-free and non-seizure-free cohorts. A final multivariate logistic model utilizing only preoperative quantitative MRI data to predict seizure outcome was developed with a c-statistic of 0.846. Using both preoperative quantitative MRI data and previously validated clinical predictors of seizure outcomes, we developed a model with a c-statistic of 0.897. SIGNIFICANCE: This study demonstrates that preoperative cortical volume loss in both frontal and extrafrontal regions can be predictive of seizure outcome after frontal lobectomy, and models can be developed with excellent predictive capabilities using preoperative MRI data. Automated quantitative MRI analysis can be quickly and reliably performed in patients with frontal lobe epilepsy, and further studies may be developed for integration into preoperative risk stratification.

Indexed as

Cerebral CortexEpilepsy, Frontal LobeImage Interpretation, Computer-AssistedNeuroimagingAdolescentAdultAgedChildChild, PreschoolFemaleHumansMagnetic Resonance ImagingMaleMiddle AgedPsychosurgeryTreatment Outcomeepilepsy surgeryfrontal lobectomyfrontal lobe epilepsyoutcomesvolumetric analysis

Identifiers

PMID33756031
PMCPMC8896091

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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.