Human embryonic larynx morphogenesis: three‐dimensional and multiplanar study (918.26)
Bibliographic record
Abstract
The purpose of this study was to describe the human larynx embryology, using three‐dimensional reconstructions from seven human embryos histological sections, and to compare our results with literature. Seven human embryos from two historic French collections (Paris‐Descartes University's Delmas‐Rouvière collection and Rouen University's Tardif collection) stained with hematoxylin & eosin or Masson's trichrome were reclassified according to the Carnegie Atlas criteria (CS (Carnegie stages) 17, 18, 19, 21 and 22). A local made computer software developed by IADI lab (INSERM U947, Nancy) allowed automatic slices selection, automatic rigid registration, and dust filtering. Once registration had been completed, DICOM files were used with ORS Visual software (v1.5, Montreal), which allowed multiple display and post‐processing possibilities (3D VR; orthogonal/curved multiplanar reformation). Due to large size files, image processing was performed on PC with Windows 7 (64 bit) and 20 GB RAM. Three‐dimensional and multiplanar study of the larynx morphogenesis was possible with appropriate thresholding. In the first stages of this study, the early laryngeal aditus was visible. Two posterior elevations, the arytenoid swellings, one anterior, the epiglottis, and the vocal folds were seen in the last stages. Human embryonic larynx morphogenesis works are very rare because of the smallness of this anatomical structure. Our study, using historic human embryos histological sections has shown the larynx growth. This demonstration was completely novel and had never been published previously, to our knowledge. Indeed, our method is fully respectful towards the microscopic structure unlike methods using Amira© segmentation and triangulation process. The precise knowledge of this morphogenesis will help to better understand congenital malformations.
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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 | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| 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) | 0.003 | 0.002 |
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".