Evidence map›Paper›PMID 30140608›Full record

ArticleNeuroImage. Clinical2018

A user-guided tool for semi-automated cerebral microbleed detection and volume segmentation: Evaluating vascular injury and data labelling for machine learning.

Melanie A Morrison, Seyedmehdi Payabvash, Yicheng Chen, Sivakami Avadiappan, Mihir Shah, Xiaowei Zou, Christopher P Hess, Janine M Lupo

Registry-linked trialAbstract read
In one paragraph

Article in NeuroImage. Clinical, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT01764529 (Modifiers of Disease Severity and Progression in Cerebral Cavernous Malformations), which is not on this map. Cited by 26 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed, 1 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.

NCT01764529 completednot on this map

Modifiers of Disease Severity and Progression in Cerebral Cavernous Malformations

Typeobservational_patient_registrySponsorUniversity of California, San FranciscoRan2010 to 2025Enrolled789ConditionsCavernous Angioma, Familial, Cerebral Cavernous Malformations, Cerebral Cavernous Hemangioma
3 · Its place in the literature

Who cites it

26 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Trial
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  4. Review
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  7. Review
  8. Article
  9. aXonica: A support package for MRI based Neuroimaging.Biotechnology notes (Amsterdam, Netherlands) · 2024
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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

8 authors.

Melanie A MorrisonDepartment of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA, USA.
Seyedmehdi PayabvashDepartment of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA, USA.
Yicheng ChenDepartment of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA, USA; UCSF/UC Berkeley Graduate Group in Bioengineering, USA.
Sivakami AvadiappanDepartment of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA, USA.
Mihir ShahDepartment of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA, USA.
Xiaowei ZouDepartment of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA, USA.
Christopher P HessDepartment of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA, USA; Department of Neurology, University of California San Francisco, San Francisco, CA, USA.
Janine M LupoDepartment of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA, USA; UCSF/UC Berkeley Graduate Group in Bioengineering, USA. Electronic address: janine.lupo@ucsf.edu.

Funding

VCRC Administration UnitU54NS065705 · NINDS · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI LOEB, JEFFREY A · 2009 to 2023
$20.8M
MICROBLEEDS AS A MARKER OF RADIATION-INDUCED BRAIN INJURY IN PEDIATRIC PATIENTSR01HD079568 · NICHD · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI LUPO, JANINE MARIE · 2015 to 2019
$2.5M
NICHD NIH HHS R01 HD079568NINDS NIH HHS U54 NS065705
6 · The paper itself

Abstract

Background and purpose: With extensive research efforts in place to address the clinical relevance of cerebral microbleeds (CMBs), there remains a need for fast and accurate methods to detect and quantify CMB burden. Although some computer-aided detection algorithms have been proposed in the literature with high sensitivity, their specificity remains consistently poor. More sophisticated machine learning methods appear to be promising in their ability to minimize false positives (FP) through high-level feature extraction and the discrimination of hard-mimics. To achieve superior performance, these methods require sizable amounts of precisely labelled training data. Here we present a user-guided tool for semi-automated CMB detection and volume segmentation, offering high specificity for routine use and FP labelling capabilities to ease and expedite the process of generating labelled training data. Materials and methods: Existing computer-aided detection methods reported by our group were extended to include fully-automated segmentation and user-guided CMB classification with FP labelling. The algorithm's performance was evaluated on a test set of ten patients exhibiting radiotherapy-induced CMBs on MR images. Results: The initial algorithm's base sensitivity was maintained at 86.7%. FP's were reduced to inter-rater variations and segmentation results were in 98% agreement with ground truth labelling. There was an approximate 5-fold reduction in the time users spent evaluating CMB burden with the algorithm versus without computer aid. The Intra-class Correlation Coefficient for inter-rater agreement was 0.97 CI[0.92,0.99]. Conclusions: This development serves as a valuable tool for routine evaluation of CMB burden and data labelling to improve CMB classification with machine learning. The algorithm is available to the public on GitHub (https://github.com/LupoLab-UCSF/CMB_labeler).

Indexed as

AlgorithmsMachine LearningMicrocirculationCerebral HemorrhageCohort StudiesData AnalysisHumansImage Processing, Computer-AssistedRetrospective StudiesVascular System InjuriesAlgorithmAutomatedBrain tumorCerebral microbleedsLesionMachine learningMagnetic resonance imagingRadiation therapySusceptibility weighted imagingVascular injury

Identifiers

PMID30140608
PMCPMC6104340

What OpenQuestion holds

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LicenceCC BY-NC-ND
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Registered trials

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.