Forskning ved Københavns Universitet - Københavns Universitet

Forside

Segmentation of intracranial arterial calcification with deeply supervised residual dropout networks

Publikation: Bidrag til bog/antologi/rapportKonferencebidrag i proceedingsForskningfagfællebedømt

  • Gerda Bortsova
  • Gijs van Tulder
  • Florian Dubost
  • Tingying Peng
  • Nassir Navab
  • Aad van der Lugt
  • Daniel Bos
  • de Bruijne, Marleen

Intracranial carotid artery calcification (ICAC) is a major risk factor for stroke, and might contribute to dementia and cognitive decline. Reliance on time-consuming manual annotation of ICAC hampers much demanded further research into the relationship between ICAC and neurological diseases. Automation of ICAC segmentation is therefore highly desirable, but difficult due to the proximity of the lesions to bony structures with a similar attenuation coefficient. In this paper, we propose a method for automatic segmentation of ICAC; the first to our knowledge. Our method is based on a 3D fully convolutional neural network that we extend with two regularization techniques. Firstly, we use deep supervision to encourage discriminative features in the hidden layers. Secondly, we augment the network with skip connections, as in the recently developed ResNet, and dropout layers, inserted in a way that skip connections circumvent them. We investigate the effect of skip connections and dropout. In addition, we propose a simple problem-specific modification of the network objective function that restricts the focus to the most important image regions and simplifies the optimization. We train and validate our model using 882 CT scans and test on 1,000. Our regularization techniques and objective improve the average Dice score by 7.1%, yielding an average Dice of 76.2% and 97.7% correlation between predicted ICAC volumes and manual annotations.

OriginalsprogEngelsk
TitelMedical Image Computing and Computer-Assisted Intervention − MICCAI 2017 : 20th International Conference, Quebec City, QC, Canada, September 11-13, 2017, Proceedings, Part III
RedaktørerMaxime Descoteaux, Lena Maier-Hein, Alfred Franz, Pierre Jannin, D. Louis Collins, Simon Duchesne
Antal sider9
ForlagSpringer
Publikationsdato2017
Sider356-364
ISBN (Trykt)978-3-319-66178-0
ISBN (Elektronisk)978-3-319-66179-7
DOI
StatusUdgivet - 2017
Begivenhed20th International Conference on Medical Image Computing and Computer-Assisted Intervention - Quebec City, Canada
Varighed: 11 sep. 201713 sep. 2017
Konferencens nummer: 20

Konference

Konference20th International Conference on Medical Image Computing and Computer-Assisted Intervention
Nummer20
LandCanada
ByQuebec City
Periode11/09/201713/09/2017
NavnLecture notes in computer science
Vol/bind10435
ISSN0302-9743

Links

ID: 184143404