Bibliographic record
Abstract
Objective To investigate the value of color Doppler ultrasound in the diagnosis of posterior nutcracker syndrome(PNCS)by analyzing the ultrasonographic data.Methods Eight cases diagnosed as PNCS according to history and examinations results were performed color Doppler ultrasound.The morphology and pathway of the left renal vein(LRV)were observed.After that,the anteroposterior diameter of LRV and peak velocity were measured both at the dialated portion on the left side of aorta and the narrowest segment between aorta and lumber vertebral.The ratios of both the diameter and the peak velocity were calculated later.Results Color Doppler ultrasound can clearly display the pathway of LRV running into the inferior vena cava.In all the 8 cases, LRV was demonstrated to flow into the inferior vena cava retroaortically by color Doppler ultrasound in multiple scanning planes.The diameter of the narrowest portion of the LRV was (1.5±0.4)mm with the peak velocity of (154.5±30.1)cm/s,whereas the diameter of the dilated portion was (8.7±1.4)mm with the peak velocity of (22.8±3.4)cm/s.The ratio of the diameter and the peak velocity between the narrowest portion with the dilated portion of the LRV were 1:(6.5±0.5)and 1:(7.2±0.9)respectively.Conclusion Color Doppler ultrasound could evaluate accurately the hemodynamic changes due to left renal vein anomalies and is useful for the diagnosis and management of PNCS.
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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) | 0.013 | 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".