AssemblyNet: A large ensemble of CNNs for 3D whole brain MRI segmentation.

NeuroImage
Pierrick CoupéJosé V. Manjon

Abstract

Whole brain segmentation of fine-grained structures using deep learning (DL) is a very challenging task since the number of anatomical labels is very high compared to the number of available training images. To address this problem, previous DL methods proposed to use a single convolution neural network (CNN) or few independent CNNs. In this paper, we present a novel ensemble method based on a large number of CNNs processing different overlapping brain areas. Inspired by parliamentary decision-making systems, we propose a framework called AssemblyNet, made of two "assemblies" of U-Nets. Such a parliamentary system is capable of dealing with complex decisions, unseen problem and reaching a relevant consensus. AssemblyNet introduces sharing of knowledge among neighboring U-Nets, an "amendment" procedure made by the second assembly at higher-resolution to refine the decision taken by the first one, and a final decision obtained by majority voting. During our validation, AssemblyNet showed competitive performance compared to state-of-the-art methods such as U-Net, Joint label fusion and SLANT. Moreover, we investigated the scan-rescan consistency and the robustness to disease effects of our method. These experiences demonstrated th...Continue Reading

References

Apr 3, 2008·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·José V ManjónMontserrat Robles
Dec 23, 2009·Journal of Magnetic Resonance Imaging : JMRI·José V ManjónMontserrat Robles
Apr 10, 2010·IEEE Transactions on Medical Imaging·Nicholas J TustisonJames C Gee
May 25, 2011·IEEE Transactions on Medical Imaging·Françcois RousseauColin Studholme
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Jan 18, 2012·NeuroImage·Bruce Fischl
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Mar 26, 2013·NeuroImage·Tong TongUNKNOWN Alzheimer's Disease Neuroimaging Initiative
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Aug 6, 2015·NeuroImage·Rémi GiraudUNKNOWN Alzheimer's Disease Neuroimaging Initiative
Apr 6, 2016·IEEE Transactions on Medical Imaging·Pim MoeskopsIvana Isgum
Aug 12, 2016·Frontiers in Neuroinformatics·José V Manjón, Pierrick Coupé
Feb 23, 2017·NeuroImage·Christian WachingerTassilo Klein
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Dec 7, 2018·NeuroImage·Abhijit Guha RoyUNKNOWN Alzheimer's Disease Neuroimaging Initiative
Mar 10, 2019·Scientific Reports·Pierrick CoupéGwenaelle Catheline
Mar 23, 2019·NeuroImage·Christian S PeroneJulien Cohen-Adad
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Dec 1, 2019·Computerized Medical Imaging and Graphics : the Official Journal of the Computerized Medical Imaging Society·Jose DolzIsmail Ben Ayed
Feb 8, 2020·IEEE Transactions on Medical Imaging·Anne-Marie RickmannChristian Wachinger

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