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The challenge of mapping the human connectome based on diffusion tractography.


ABSTRACT: Tractography based on non-invasive diffusion imaging is central to the study of human brain connectivity. To date, the approach has not been systematically validated in ground truth studies. Based on a simulated human brain data set with ground truth tracts, we organized an open international tractography challenge, which resulted in 96 distinct submissions from 20 research groups. Here, we report the encouraging finding that most state-of-the-art algorithms produce tractograms containing 90% of the ground truth bundles (to at least some extent). However, the same tractograms contain many more invalid than valid bundles, and half of these invalid bundles occur systematically across research groups. Taken together, our results demonstrate and confirm fundamental ambiguities inherent in tract reconstruction based on orientation information alone, which need to be considered when interpreting tractography and connectivity results. Our approach provides a novel framework for estimating reliability of tractography and encourages innovation to address its current limitations.

SUBMITTER: Maier-Hein KH 

PROVIDER: S-EPMC5677006 | biostudies-literature | 2017 Nov

REPOSITORIES: biostudies-literature

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The challenge of mapping the human connectome based on diffusion tractography.

Maier-Hein Klaus H KH   Neher Peter F PF   Houde Jean-Christophe JC   Côté Marc-Alexandre MA   Garyfallidis Eleftherios E   Zhong Jidan J   Chamberland Maxime M   Yeh Fang-Cheng FC   Lin Ying-Chia YC   Ji Qing Q   Reddick Wilburn E WE   Glass John O JO   Chen David Qixiang DQ   Feng Yuanjing Y   Gao Chengfeng C   Wu Ye Y   Ma Jieyan J   He Renjie R   Li Qiang Q   Westin Carl-Fredrik CF   Deslauriers-Gauthier Samuel S   González J Omar Ocegueda JOO   Paquette Michael M   St-Jean Samuel S   Girard Gabriel G   Rheault François F   Sidhu Jasmeen J   Tax Chantal M W CMW   Guo Fenghua F   Mesri Hamed Y HY   Dávid Szabolcs S   Froeling Martijn M   Heemskerk Anneriet M AM   Leemans Alexander A   Boré Arnaud A   Pinsard Basile B   Bedetti Christophe C   Desrosiers Matthieu M   Brambati Simona S   Doyon Julien J   Sarica Alessia A   Vasta Roberta R   Cerasa Antonio A   Quattrone Aldo A   Yeatman Jason J   Khan Ali R AR   Hodges Wes W   Alexander Simon S   Romascano David D   Barakovic Muhamed M   Auría Anna A   Esteban Oscar O   Lemkaddem Alia A   Thiran Jean-Philippe JP   Cetingul H Ertan HE   Odry Benjamin L BL   Mailhe Boris B   Nadar Mariappan S MS   Pizzagalli Fabrizio F   Prasad Gautam G   Villalon-Reina Julio E JE   Galvis Justin J   Thompson Paul M PM   Requejo Francisco De Santiago FS   Laguna Pedro Luque PL   Lacerda Luis Miguel LM   Barrett Rachel R   Dell'Acqua Flavio F   Catani Marco M   Petit Laurent L   Caruyer Emmanuel E   Daducci Alessandro A   Dyrby Tim B TB   Holland-Letz Tim T   Hilgetag Claus C CC   Stieltjes Bram B   Descoteaux Maxime M  

Nature communications 20171107 1


Tractography based on non-invasive diffusion imaging is central to the study of human brain connectivity. To date, the approach has not been systematically validated in ground truth studies. Based on a simulated human brain data set with ground truth tracts, we organized an open international tractography challenge, which resulted in 96 distinct submissions from 20 research groups. Here, we report the encouraging finding that most state-of-the-art algorithms produce tractograms containing 90% of  ...[more]

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