ISPD 2022 debate—When offering a first trimester ultrasound at 11 + 0 to 13 + 6 weeks, a detailed review of fetal anatomy should be included
Bibliographic record
Abstract
Key points What is already known about this topic? Through the introduction of the nuchal translucency scan at 11 + 0 to 13 + 6 weeks gestation for aneuploidy screening in the 1990s, the role of the first trimester scan has evolved to include an assessment of fetal anatomy. Advances in ultrasound technology and expertise now mean that many fetal anomalies that were previously detected on the routine second trimester anatomy scan are now detected in the first trimester. What does this study add? This report summarizes the oral debate that was presented at the 22nd International Conference on Prenatal Diagnosis and Therapy in Montreal, Canada, on 21 June 2022. Our maternal–fetal medicine experts argue for and against the proposition that a detailed review of fetal anatomy should be included in all scans performed at 11 + 0 to 13 + 6 weeks gestation.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.006 | 0.020 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.003 | 0.003 |
| Science and technology studies | 0.001 | 0.002 |
| Scholarly communication | 0.004 | 0.004 |
| Open science | 0.002 | 0.002 |
| Research integrity | 0.005 | 0.005 |
| Insufficient payload (model declined to judge) | 0.022 | 0.012 |
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 source (direct Gemma or distilled Codex), 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".