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Influence of Classification Task and Distribution Shift Type on OOD Detection in Fetal Ultrasound.
In: (28th International Conference on Medical Image Computing and Computer Assisted Intervention, MICCAI 2025, 23-27 September 2025, Daejeon). Berlin [u.a.]: Springer, 2026. 293-303 (Lect. Notes Comput. Sc. ; 15966 LNCS)
Reliable out-of-distribution (OOD) detection is important for safe deployment of deep learning models in fetal ultrasound amidst heterogeneous image characteristics and clinical settings. OOD detection relies on estimating a classification model’s uncertainty, which should increase for OOD samples. While existing research has largely focused on uncertainty quantification methods, this work investigates the impact of the classification task itself. Through experiments with eight uncertainty quantification methods across four classification tasks on the same image dataset, we demonstrate that OOD detection performance significantly varies with the task, and that the best task depends on the defined ID-OOD criteria; specifically, whether the OOD sample is due to: i) an image characteristic shift or ii) an anatomical feature shift. Furthermore, we reveal that superior OOD detection does not guarantee optimal abstained prediction, underscoring the necessity to align task selection and uncertainty strategies with the specific downstream application in medical image analysis. Code: https://github.com/wong-ck/ood-fetal-us.
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Publication type
Article: Conference contribution
Keywords
Fetal Ultrasound ; Ood ; Uncertainty Quantification
Language
english
Publication Year
2026
HGF-reported in Year
2026
ISSN (print) / ISBN
0302-9743
e-ISSN
1611-3349
Conference Title
28th International Conference on Medical Image Computing and Computer Assisted Intervention, MICCAI 2025
Conference Date
23-27 September 2025
Conference Location
Daejeon
Quellenangaben
Volume: 15966 LNCS,
Pages: 293-303
Publisher
Springer
Publishing Place
Berlin [u.a.]
Institute(s)
Helmholtz Artifical Intelligence Cooperation Unit (HAICU)
Institute of AI for Health (AIH)
Institute of AI for Health (AIH)
POF-Topic(s)
30205 - Bioengineering and Digital Health
Research field(s)
Enabling and Novel Technologies
PSP Element(s)
G-530005-001
G-540007-001
G-540007-001
Scopus ID
105017859502
Erfassungsdatum
2025-10-23