![IMPORTANT] Post challenge submission is still possible. Please write to autoimplant.challenge@gmail.com with your results for evaluation details.
![April.13,2022] Check out our preprint on reconstructing large and complex cranial defects
![Dec.  03,2021] AutoImplant  II challenge  proceedings are published online.
![Sept. 30,2021]  Final ranking made public.
![Sept. 28,2021]  AutoImplant 2021 Program released.
![Sept. 24,2021]  Author notification sent.
! Paper submission portal: https://cmt3.research.microsoft.com/AUTOIMPLANT2021
! [June 21,2021] Dataset for Task 2 is now released and submission for Task 2 opens. 
! TESCAN 3DIM is sponsoring our challenge.  Winners of Task 1, Task 2 and Task 3 will receive 300 €, 400€, 300€ , respectively. To be eligible for the price, a full LNCS paper (8 + pages) must be submitted, besides the results. 
! [May 20,2021] Submission for Task 1 and Task 3 now opens.                                                                                                                                                             

Second MICCAI challenge on cranial implant design

Please see our AutoImplant 2020 website for an overview of the cranial implant design topic.  Our 2nd AutoImplant Challenge (referred to as AutoImplant 2021) sees the (not limited to) following  three major improvements  compared to the prior edition, besides a stronger team:

  • Real craniotomy defective skulls will be provided in the evaluation phase.
  • Task specific metrics (e.g., boundary Dice Score) that are optimally in agreement with the clinical criteria of cranial implant design will be implemented and used.
  • Besides a metric-based scoring and ranking system, neurosurgeons will be invited to verify, score and rank the participants-submitted cranial implants based their clinical usability (for the real cases in Task 2).

More information can be found from the design document of our AutoImplant 2021 challenge.

Participation Overview

You need to JOIN our challenge to gain access to our challenge dataset at the dataset page. You can choose to participate in one, two or all three tasks:

  • Task 1: Cranial implant design for diverse synthetic defects on aligned skulls [link]
  • Task 2: Cranial implant design for real patient defects [link]
  • Task 3: Improving the model generalization ability for cranial implant design [link]
To submit your results and challenge papers, please refer to the guideline. Please refer to the Evaluation And Ranking page to know about how your submissions will be evaluated and ranked.

Presentation at MICCAI 2021

AutoImplant 2021 will be held as a half-day even at MICCAI 2021 (in Strasbourg, FRANCE). To be able to present your results at MICCAI 2021, you need to submit a  paper (2- 7 page abstract or 8+ page regular paper) alongside with your results. If only the results are submitted, you are unable to present your methods at the conference (We can still process your submission and list your scores and ranking on the result page).  We encourage the participants of our challenge to make early preparations and submit full papers (8+ pages) so that they can be officially published (e.g., in Springer, etc) after acceptance. Even though we do have an option to accept abstract (2-7 pages), please be wary that these very short papers cannot meet the criteria set by these publishers. Paper submission guideline can be found here.


  • Registration open (Datasets releases): Task 1 & 3 (April 2021), Task 2 (June 2021)
  • Submission open: Task 1 & 3 (May 2021), Task 2 (June, 2021)
  • Full Paper Deadline: September 20, 2021
  • Paper Review Due: September 23, 2021
  • Notification of Acceptance: September 23,24,  2021
  • Camera-ready Paper: September 25, 27, 2021
  • Presentation at MICCAI 2021: UTC time  Oct 1 / 9:00-13:00.  CEST time Oct 1/ 11:00 - 15:00 CEST

Useful Materials to Read

1.  Li, J. and Egger, J. Towards the Automatization of Cranial Implant Design in Cranioplasty: First Challenge, AutoImplant 2020, Held in Conjunction with MICCAI 2020, Lima, Peru, October 8, 2020, Proceedings. Springer Nature. [Bibtex]                    
2.  Li, J., Pimentel, P., Szengel, A., Ehlke, M., Lamecker, H., et al. 2021. AutoImplant 2020 - First MICCAI Challenge on Automatic Cranial Implant Design. IEEE transactions on medical imaging. DOI: 10.1109/TMI.2021.3077047. [Github] [Bibtex]
3. Li, J., von Campe, G., Pepe, A., Gsaxner, C., Wang, E., Chen, X., Zefferer, U., Tödtling, M., Krall, M., Deutschmann, H. and Schäfer, U., et al. 2021. Automatic Skull Defect Restoration and Cranial Implant Generation for Cranioplasty. Medical Image Analysis, p.102171. [Github][Bibtex]


Number of participants: 189