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Abstract

Due to difficulties in collecting sufficient training data, recent advances in neural-network-based methods have not been fully explored in the analysis of brain Magnetic Resonance Imaging (MRI). A possible solution to the limited-data issue is to augment the training set with synthetically generated data. In this paper, we propose a data augmentation strategy based on regional feature substitution. We demonstrate the advantages of this strategy with respect to training a simple neural-network-based classifier in predicting when individual youth transition from no-to-low to medium-to-heavy alcohol drinkers solely based on their volumetric MRI measurements. Based on 20-fold cross-validation, we generate more than one million synthetic samples from less than 500 subjects for each training run. The classifier achieves an accuracy of 74.1% in correctly distinguishing non-drinkers from drinkers at baseline and a 43.2% weighted accuracy in predicting the transition over a three year period (5-group classification task). Both accuracy scores are significantly better than training the classifier on the original dataset.

Notes

Acknowledgement

This research was supported in part by NIH grants U24AA021697, AA005965, AA013521, AA026762, and National Natural Science Foundation of China grants 11501352, 61573235, 11871328.

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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  • Tuo Leng
    • 1
    • 2
  • Qingyu Zhao
    • 2
  • Chao Yang
    • 1
  • Zhufu Lu
    • 1
  • Ehsan Adeli
    • 2
    Email author
  • Kilian M. Pohl
    • 2
    • 3
  1. 1.School of Computer Engineering and SciencesShanghai UniversityShanghaiChina
  2. 2.School of MedicineStanford UniversityStanfordUSA
  3. 3.SRI International, Center for Health SciencesMenlo ParkUSA

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