Dilated Squeeze-and-Excitation U-Net for Fetal Ultrasound Image Segmentation
Bibliographic record
Abstract
During all trimesters of the pregnancy, measuring the fetal Head Circumference (HC) from ultrasound images can estimate the gestational age, monitor the growth status of the fetus and infer newborn's state. Precise segmentation of fetal ultrasound images can help physicians measure HC efficiently and accurately and make further predictions. In this paper, we leverage deep learning encode-decode architecture to segment the fetal skull boundary and fetal skull for fetal HC measurement. We modify our network based on U-Net due to its outstanding performance in biomedical image analysis. We add dilated convolution layers after the last encoder and Squeeze-and-Excitation (SE) blocks on the skip connections of U-Net to segment fetal skull boundary and fetal skull in 2D ultrasound images. The model is trained and evaluated on the HC18 grand challenge dataset, which has 2D ultrasound images at different trimesters of pregnancy. We achieved 2.27 ± 3.61 mm mean absolute difference in HC measurement. The model also achieved 97.31 ± 1.84% mean Dice score in fetal skull segmentation.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".