Dynamic Arterial and Valsalva-Augmented Venous Phase Multidetector CT for Orbital Vascular Lesions
Bibliographic record
Abstract
In Brief Purpose: To describe the value and purpose of a new method of dynamic arterial and Valsalva-augmented venous phase CT angiographic assessment of vascular orbital lesions. Methods: Description of a dynamic arterial and Valsalva-augmented venous phase multidetector CT protocol currently being used at the institution of the authors for investigation of orbital vascular lesions. Research ethics approval was not required by the institution because this is a 1-case report, with a pictorial review of imaging findings in various representative orbital vascular lesions. Results: One case of a distensible venous malformation depicts the clinical application of the imaging protocol. Key features of the malformation were demonstrated by arterial and venous phases of imaging. Conclusions: This technique is of value in diagnosis and management of vascular malformations of the orbit. We present a dynamic dual-phase CT angiographic protocol composed of arterial phase and Valsalva-augmented venous phase for assessment of vascular lesions of the orbit.
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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 | 0.000 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.002 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.001 | 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".