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Context-aware convolutional neural networks for stroke sign detection in non-contrast CT scans

  • Aneta Lisowska
  • , Alison O’Neil
  • , Vismantas Dilys
  • , Matthew Daykin
  • , Erin Beveridge
  • , Keith Muir
  • , Stephen McLaughlin
  • , Ian Poole

Research output: Chapter in Book / Report / Conference proceedingConference contributionAcademicpeer-review

Abstract

Detection of acute stroke signs in non-contrast CT images is a challenging task. The intensity and texture variations in pathological regions are subtle and can be confounded by normal physiological changes or by old lesions. In this paper we investigate the use of contextual information for stroke sign detection. In particular, the appearance of the contralateral anatomy and the atlas-encoded spatial location are incorporated into a Convolutional Neural Network (CNN) architecture. CNNs are trained separately for the detection of dense vessels and of ischaemia. The network performance is evaluated on 170 datasets by cross-validation. We find that atlas location is important for dense vessel detection, but is less useful for ischaemia, whereas bilateral comparison is crucial for detection of ischaemia.
Original languageEnglish
Title of host publicationMedical Image Understanding and Analysis - 21st Annual Conference, MIUA 2017, Proceedings
EditorsV. Gonzalez-Castro, M. Valdes Hernandez
PublisherSpringer Verlag
Pages494-505
ISBN (Print)9783319609638
DOIs
Publication statusPublished - 2017
Externally publishedYes
Event21st Annual Conference on Medical Image Understanding and Analysis, MIUA 2017 - Edinburgh, United Kingdom
Duration: 11 Jul 201713 Jul 2017

Publication series

NameCommunications in Computer and Information Science
ISSN (Print)1865-0929

Conference

Conference21st Annual Conference on Medical Image Understanding and Analysis, MIUA 2017
Country/TerritoryUnited Kingdom
CityEdinburgh
Period11/07/1713/07/17

Funding

FundersFunder number
Medical Research CouncilMR/N003403/1

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