TY - CHAP
T1 - Mesh U-Nets for 3D Cardiac Deformation Modeling
AU - Beetz, Marcel
AU - Acero, Jorge Corral
AU - Banerjee, Abhirup
AU - Eitel, Ingo
AU - Zacur, Ernesto
AU - Lange, Torben
AU - Stiermaier, Thomas
AU - Evertz, Ruben
AU - Backhaus, Sören J.
AU - Thiele, Holger
AU - Bueno-Orovio, Alfonso
AU - Lamata, Pablo
AU - Schuster, Andreas
AU - Grau, Vicente
N1 - Funding Information:
Acknowledgments. The authors express no conflict of interest. The work of MB is supported by the Stiftung der Deutschen Wirtschaft (Foundation of German Business). AB is a Royal Society University Research Fellow and is supported by the Royal Society (Grant No. URF\R1\221314). The work of AB and VG is supported by the British Heart Foundation (BHF) Project under Grant PG/20/21/35082. The work of VG is supported by the CompBioMed 2 Centre of Excellence in Computational Biomedicine (European Commission Horizon 2020 research and innovation programme, grant agreement No. 823712). The work of JCA is supported by the EU’s Horizon 2020 research and innovation program under the Marie Sklodowska-Curie (g.a. 764738) and the EPSRC Impact Acceleration Account (D4D00010 DF48.01), funded by UK Research and Innovation. ABO holds a BHF Intermediate Basic Science Research Fellowship (FS/17/22/32644). The work is also supported by the German Center for Cardiovascular Research, the British Heart Foundation (PG/16/75/32383), and the Wellcome Trust (209450/Z/17).
Publisher Copyright:
© 2022, The Author(s), under exclusive license to Springer Nature Switzerland AG.
PY - 2022
Y1 - 2022
N2 - During a cardiac cycle, the heart anatomy undergoes a series of complex 3D deformations, which can be analyzed to diagnose various cardiovascular pathologies including myocardial infarction. While volume-based metrics such as ejection fraction are commonly used in clinical practice to assess these deformations globally, they only provide limited information about localized changes in the 3D cardiac structures. The objective of this work is to develop a novel geometric deep learning approach to capture the mechanical deformation of complete 3D ventricular shapes, offering potential to discover new image-based biomarkers for cardiac disease diagnosis. To this end, we propose the mesh U-Net, which combines mesh-based convolution and pooling operations with U-Net-inspired skip connections in a hierarchical step-wise encoder-decoder architecture, in order to enable accurate and efficient learning directly on 3D anatomical meshes. The proposed network is trained to model both cardiac contraction and relaxation, that is, to predict the 3D cardiac anatomy at the end-systolic phase of the cardiac cycle based on the corresponding anatomy at end-diastole and vice versa. We evaluate our method on a multi-center cardiac magnetic resonance imaging (MRI) dataset of 1021 patients with acute myocardial infarction. We find mean surface distances between the predicted and gold standard anatomical meshes close to the pixel resolution of the underlying images and high similarity in multiple commonly used clinical metrics for both prediction directions. In addition, we show that the mesh U-Net compares favorably to a 3D U-Net benchmark by using 66% fewer network parameters and drastically smaller data sizes, while at the same time improving predictive performance by 14%. We also observe that the mesh U-Net is able to capture subpopulation-specific differences in mechanical deformation patterns between patients with different myocardial infarction types and clinical outcomes.
AB - During a cardiac cycle, the heart anatomy undergoes a series of complex 3D deformations, which can be analyzed to diagnose various cardiovascular pathologies including myocardial infarction. While volume-based metrics such as ejection fraction are commonly used in clinical practice to assess these deformations globally, they only provide limited information about localized changes in the 3D cardiac structures. The objective of this work is to develop a novel geometric deep learning approach to capture the mechanical deformation of complete 3D ventricular shapes, offering potential to discover new image-based biomarkers for cardiac disease diagnosis. To this end, we propose the mesh U-Net, which combines mesh-based convolution and pooling operations with U-Net-inspired skip connections in a hierarchical step-wise encoder-decoder architecture, in order to enable accurate and efficient learning directly on 3D anatomical meshes. The proposed network is trained to model both cardiac contraction and relaxation, that is, to predict the 3D cardiac anatomy at the end-systolic phase of the cardiac cycle based on the corresponding anatomy at end-diastole and vice versa. We evaluate our method on a multi-center cardiac magnetic resonance imaging (MRI) dataset of 1021 patients with acute myocardial infarction. We find mean surface distances between the predicted and gold standard anatomical meshes close to the pixel resolution of the underlying images and high similarity in multiple commonly used clinical metrics for both prediction directions. In addition, we show that the mesh U-Net compares favorably to a 3D U-Net benchmark by using 66% fewer network parameters and drastically smaller data sizes, while at the same time improving predictive performance by 14%. We also observe that the mesh U-Net is able to capture subpopulation-specific differences in mechanical deformation patterns between patients with different myocardial infarction types and clinical outcomes.
KW - 3D heart contraction
KW - Acute myocardial infarction
KW - Cardiac mechanics
KW - Cardiac MRI
KW - Geometric deep learning
KW - Mesh sampling
KW - Spectral graph convolutions
UR - http://www.scopus.com/inward/record.url?scp=85147996130&partnerID=8YFLogxK
U2 - 10.1007/978-3-031-23443-9_23
DO - 10.1007/978-3-031-23443-9_23
M3 - Conference paper
AN - SCOPUS:85147996130
SN - 9783031234422
T3 - Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
SP - 245
EP - 257
BT - Statistical Atlases and Computational Models of the Heart. Regular and CMRxMotion Challenge Papers - 13th International Workshop, STACOM 2022, Held in Conjunction with MICCAI 2022, Revised Selected Papers
A2 - Camara, Oscar
A2 - Puyol-Antón, Esther
A2 - Suinesiaputra, Avan
A2 - Young, Alistair
A2 - Qin, Chen
A2 - Sermesant, Maxime
A2 - Wang, Shuo
PB - Springer Science and Business Media Deutschland GmbH
T2 - 13th International Workshop on Statistical Atlases and Computational Models of the Heart, STACOM 2022, held in conjunction with the 25th International Conference on Medical Image Computing and Computer-Assisted Intervention, MICCAI 2022
Y2 - 18 September 2022 through 18 September 2022
ER -