Title
Technical note: automatic segmentation method of pelvic floor levator hiatus in ultrasound using a self-normalising neural network.
Abstract
Segmentation of the levator hiatus in ultrasound allows to extract biometrics which are of importance for pelvic floor disorder assessment. In this work, we present a fully automatic method using a convolutional neural network (CNN) to outline the levator hiatus in a 2D image extracted from a 3D ultrasound volume. In particular, our method uses a recently developed scaled exponential linear unit (SELU) as a nonlinear self-normalising activation function. SELU has important advantages such as being parameter-free and mini-batch independent. A dataset with 91 images from 35 patients all labelled by three operators, is used for training and evaluation in a leave-one-patient-out cross-validation. Results show a median Dice similarity coefficient of 0.90 with an interquartile range of 0.08, with equivalent performance to the three operators (with a Williams' index of 1.03), and outperforming a U-Net architecture without the need for batch normalisation. We conclude that the proposed fully automatic method achieved equivalent accuracy in segmenting the pelvic floor levator hiatus compared to a previous semi-automatic approach.
Year
DOI
Venue
2018
10.1117/12.2322403
Proceedings of SPIE
Keywords
DocType
Volume
levator hiatus,automatic segmentation,SNN,ultrasound,CNN
Conference
10576
ISSN
Citations 
PageRank 
0277-786X
0
0.34
References 
Authors
0
8
Name
Order
Citations
PageRank
Ester Bonmati1604.77
Yipeng Hu217014.83
Nikhil Sindhwani331.18
Hans Peter Dietz420.74
Jan D'hooge528432.31
Dean C. Barratt641032.01
Jan Deprest712320.45
Tom Vercauteren81956108.68