Evaluation of the Efficiency of Patient Stabilization Devices for 3D X-ray Reconstruction of the Spine and Rib Cage
Bibliographic record
Abstract
Four devices designed to stabilize the patient's position and/or posture between X-ray exposures were investigated in order to obtain accurate 3-D reconstruction of their spine: a pelvis support, two elbow supports with handlebars, a back neck contact system and a device with three divergent laser beams pointing on subject body targets. Stability and the bearing of natural posture on a group of 10 adults without scoliosis was evaluated for the different devices using a statistical experimental design (Plackett-Burman plan of resolution IV). Small displacements of subjects were obtained by an Optotrak system with 11 infrared diodes placed on the subject's back. Results showed that the elbow supports with handlebars and pelvis support improved the subject's stability while the pelvis support was the device that produces more changes in the subject's natural posture. The elbow and back neck supports were retained for further evaluation.
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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 | 0.002 | 0.007 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.001 | 0.000 |
| 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".