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Rickmann, A.* ; Senapati, J.* ; Kovalenko, O.* ; Peters, A. ; Bamberg, F.* ; Wachinger, C.*

AbdomenNet: Deep neural network for abdominal organ segmentation in epidemiologic imaging studies.

BMC Med. Imaging 22:168 (2022)
Verlagsversion DOI PMC
Open Access Gold
Creative Commons Lizenzvertrag
Background: Whole-body imaging has recently been added to large-scale epidemiological studies providing novel opportunities for investigating abdominal organs. However, the segmentation of these organs is required beforehand, which is time consuming, particularly on such a large scale. Methods: We introduce AbdomentNet, a deep neural network for the automated segmentation of abdominal organs on two-point Dixon MRI scans. A pre-processing pipeline enables to process MRI scans from different imaging studies, namely the German National Cohort, UK Biobank, and Kohorte im Raum Augsburg. We chose a total of 61 MRI scans across the three studies for training an ensemble of segmentation networks, which segment eight abdominal organs. Our network presents a novel combination of octave convolutions and squeeze and excitation layers, as well as training with stochastic weight averaging. Results: Our experiments demonstrate that it is beneficial to combine data from different imaging studies to train deep neural networks in contrast to training separate networks. Combining the water and opposed-phase contrasts of the Dixon sequence as input channels, yields the highest segmentation accuracy, compared to single contrast inputs. The mean Dice similarity coefficient is above 0.9 for larger organs liver, spleen, and kidneys, and 0.71 and 0.74 for gallbladder and pancreas, respectively. Conclusions: Our fully automated pipeline provides high-quality segmentations of abdominal organs across population studies. In contrast, a network that is only trained on a single dataset does not generalize well to other datasets.
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Publikationstyp Artikel: Journalartikel
Dokumenttyp Wissenschaftlicher Artikel
Korrespondenzautor
Schlagwörter Deep Learning ; Segmentation ; Abdominal Mri ; Dixon Mri
ISSN (print) / ISBN 1471-2342
e-ISSN 1471-2342
Zeitschrift BMC Medical Imaging
Quellenangaben Band: 22, Heft: 1, Seiten: , Artikelnummer: 168 Supplement: ,
Verlag BMC
Verlagsort London
Nichtpatentliteratur Publikationen
Begutachtungsstatus Peer reviewed
Institut(e) Institute of Epidemiology II (EPI2)
Förderungen Projekt DEAL