A Prenatally Diagnosed Rare Vascular Ring Formed by Left Aortic Arch and Right Ductus Arteriosus
Bibliographic record
Abstract
BACKGROUND: A vascular ring arises during the development of the fetal arches and is often associated with a double aortic arch or right-sided aorta, an aberrant left subclavian artery with a posterior esophageal component, and a left-sided ductus arteriosus. CASE SUMMARY: This is a rare vascular ring formed by a left aortic arch, aberrant right subclavian artery, and right ductus arteriosus that was diagnosed prenatally by fetal echocardiography. The 3-vessels and trachea (3VT) view with 2-dimensional and color Doppler sweeps were helpful in defining the vascular pathology. Tracheomalacia was also noted, and genetic tests confirmed the presence of 22q11.2 deletion. DISCUSSION: The distal portions of the right sixth and right eighth dorsal arches were persistent, whereas the right fourth and distal part of the left sixth arches disappeared in the process of fetal development. TAKE-HOME MESSAGE: Use of the 3VT echocardiography sweep facilitates prenatal diagnosis of rare vascular rings.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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 | 0.000 | 0.004 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.002 | 0.001 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.003 | 0.002 |
| Insufficient payload (model declined to judge) | 0.002 | 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 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".