Data Summary


Size


100 Data for Training

54 Data for Testing

Pathology


Atrial Fibrillation


Images


3D Gadolinium-Enhanced Magnetic Resonance Imaging


Labels



3D Binary Masks of the Left Atrial Cavity


 

Background

Atrial fibrillation (AF) is the most common type of cardiac arrhythmia. The poor performance of current AF treatment is due to a lack of understanding of the structure of the human atria.

Nowadays, gadolinium contrast agencies are used in a third of all MRI scans to improve the clarity of the images of a patient's internal structures, such as the atria. Gadolinium-enhanced magnetic resonance imaging (GE-MRI) is widely used to study the extent of fibrosis (scars) across the atria [1]. Recent studies on human atria imaged with GE-MRI have suggested fingerprints of the atrial structure may hold the key to understanding and reversing AF [2][3].

Direct segmentation of the atrial chambers from GE-MRIs is very challenging due to the low contrast between the atrial tissue and background. Most of the existing atrial structural analysis studies utilizing GE-MRIs have been based on labor-intensive, error/bias-prone manual segmentation. Hence, there is a need for an intelligent algorithm that can perform fully automatic atrial segmentation for the left atrial (LA) cavity, to accurately reconstruct and visualize the atrial structure for clinical usage [4].

This challenge has provided an open competition for wider communities to test and validate their methods for image segmentation on a large 3D clinical dataset. The exciting development is a very important step towards patient-specific diagnostics and treatment of AF.

The Task

The participants are required to produce a computational framework capable of performing fully automatic segmentation of the LA cavity from 3D GE-MRIs without any manual assistance. The participants will receive 100 data+masks to develop their approach and be evaluated on 54 different test data for evaluation. The participants will submit the masks of the LA cavity for the 54 patients. The evaluation will be done by comparing the submitted masks for the test data the with their manually segmented masks (not open to the public). The test data (data only) will be released 2 weeks prior to the deadline of the challenge so participants can submit their predicted masks. This challenge provides a chance for participants to carefully study and experiment on a large GE-MRI dataset, and further push the state-of-the-art performance for atria segmentation.

To download the dataset and other relevant files, please visit the Data section of the challenge.

To submit your predictions for the challenge, please visit the Submission section of the challenge.

Timeline

  • 4 April 2018: Competition begins (training data released)
  • 1 Sep 2018 (00:00 AM UTC): Competition open for submission (test data released)
  • 14 Sep 2018 (11:59 PM UTC): Competition ends
  • 16 Sep 2018: Final winner announced

The competition organizers reserve the right to update the contest timeline if they deem it necessary.

Prizes

  • The team in 1st place will receive an NVIDIA GPU as an award
  • The team in 2nd place will receive $300 USD.
  • The team in 3rd place will receive $200 USD.
  • The top performers will also be invited to co-author in an international benchmarking study.

Final Rankings

Congratulations to the winners and thank you sponsors!

 

The final rankings for the top 15 out of 18 conference attending teams

Rank Author   Score
1 Qing Xia, Yuxin Yao, Zhiqiang Hu, Aimin Hao 0.932
2 Cheng Bian, Xin Yang, Jianqiang Ma, Shen Zheng, Yu-An Liu, Reza Nezafat, Pheng-Ann Heng, Yefeng Zheng 0.926
2 Sulaiman Vesal, Nishant Ravikumar, and Andreas Maier 0.926
3 Caizi Li, Qianqian Tong, Xiangyun Liao, Weixin Si, Yinzi Sun, Qiong Wang, Pheng Ann Heng 0.923
3 Elodie Puybareau, Zhao Zhou, Younes Khoudli, Yongchao Xu, Jerome Lacotte, Thierry Geraud 0.923
3 Xin Yang, Na Wang, Yi Wang, Xu Wang, Reza Nezafat, Dong Ni, Pheng-Ann Heng 0.923
4 Chen Chen, Wenjia Bai, and Daniel Rueckert 0.921
5 Shuman Jia, Antoine Despinasse, Zihao Wang, Herve Delingette, Xavier Pennec, Pierre Jaıs, Hubert Cochet, and Maxime Sermesant 0.907
6 Yashu Liu, Yangyang Dai, Cong Yan, Kuanquan Wang 0.903
7 Davide Borra, Alessandro Masci, Lorena Esposito, Alice Andalo, Claudio Fabbri, Cristiana Corsi 0.898
8 Coen de Vente, Mitko Veta, Orod Razeghi, Steven Niederer, Josien Pluim, Kawal Rhode, Rashed Karim 0.897
9 Chandrakanth Jayachandran Preetha, Shyamalakshmi Haridasan, Vahid Abdi, Sandy Engelhardt 0.888
10 Mengyun Qiao, Yuanyuan Wang, Rob J. van der Geest, Qian Tao 0.862
11 Marta Nunez-Garcia, Xiahai Zhuang, Gerard Sanroma, Lei Li, Lingchao Xu, Constantine Butakoff, Oscar Camara 0.859
12 Nicolo Savioli, Giovanni Montana, Pablo Lamata 0.851

The final rankings for the top 22 out of a total of 27 participants

Rank Author Score
1 Qing Xia et al. 0.932
2 Ning Huang 0.931
3 Xinlong Sun 0.930
4 Cheng Bian et al. 0.926
4 Px Zhan 0.926
4 Sulaiman Vesal et al. 0.926
5 Caizi Li et al. 0.923
5 Elodie Puybareau et al. 0.923
5 Xin Yang et al. 0.923
6 Chen Chen et al. 0.921
6 Ed 0.921
7 Qinyi Zhang 0.920
8 Lingchao Xu 0.915
9 Shuman Jia et al. 0.907
10 Xiaochuan Li 0.904
11 Yashu Liu et al. 0.903
12 Davide Borra et al. 0.898
13 Coen de Vente et al. 0.897
14 Chandrakanth Jayachandran Preetha et al. 0.888
15 Mengyun Qiao et al. 0.862
16 Marta Nunez-Garcia et al. 0.859
17 Nicolo Savioli et al. 0.851

[1] Christopher McGann, Nazem Akoum, Amit Patel, Eugene Kholmovski, Patricia Revelo, Kavitha Damal, Brent Wilson, Josh Cates, Alexis Harrison, Ravi Ranjan, Nathan S. Burgon, Tom Greene, Dan Kim, Edward V.R. DiBella, Dennis Parker, Rob S. MacLeod, Nassir F. Marrouche. "Atrial fibrillation ablation outcome is predicted by left atrial remodeling on MRI." Circulation: Arrhythmia and Electrophysiology (2013): CIRCEP-113.
[2] Brian J. Hansen, Jichao Zhao, Thomas A. Csepe, Brandon T. Moore, Ning Li, Laura A. Jayne, Anuradha Kalyanasundaram, Praise Lim, Anna Bratasz, Kimerly A. Powell, Orlando P. Simonetti, Robert S.D. Higgins, Ahmet Kilic, Peter J. Mohler, Paul M.L. Janssen, Raul Weiss, John D. Hummel, Vadim V. Fedorov. "Atrial fibrillation driven by micro-anatomic intramural re-entry revealed by simultaneous sub-epicardial and sub-endocardial optical mapping in explanted human hearts." European heart journal 36, no. 35 (2015): 2390-2401.
[3] Jichao Zhao, Brian J. Hansen, Yufeng Wang, Thomas A. Csepe, Lidiya V. Sul, Alan Tang, Yiming Yuan, Ning Li, Anna Bratasz, Kimerly A. Powell, Ahmet Kilic, Peter J. Mohler, Paul M. L. Janssen, Raul Weiss, Orlando P. Simonetti, John D. Hummel, Vadim V. Fedorov. "Three‐dimensional Integrated Functional, Structural, and Computational Mapping to Define the Structural “Fingerprints” of Heart‐Specific Atrial Fibrillation Drivers in Human Heart Ex Vivo." Journal of the American Heart Association 6, no. 8 (2017): p.e005922.
[4] Zhaohan. Xiong, Vadim. V. Fedorov, Xiaohang. Fu, Elizabeth. Cheng, Rob. Macleod and Jichao. Zhao, "Fully Automatic Left Atrium Segmentation from Late Gadolinium Enhanced Magnetic Resonance Imaging Using a Dual Fully Convolutional Neural Network." IEEE Transactions on Medical Imaging (2018).

For any personal questions, please contact the organizers at this email address: atriaseg2018@gmail.com.