Bibliographic record
Abstract
A method was developed for quantitative sodium MRI of the mouse prostate at 9.4 T. A small loop-gap radiofrequency coil was constructed and dual-tuned to both the proton and sodium frequencies. The location and boundary of the mouse prostate were localized using high-resolution T(2)-weighted proton images, and sodium images were acquired with 1mm isotropic resolution using a short echo time (0.6 ms) and a long pulse repetition time (300 ms) for sodium density weighting with minimal T(1) and T(2) contrast. Sodium concentration in the prostate was estimated by comparing pixel intensities within the prostate to the pixel intensities in a pair of reference vials with known sodium concentrations, and a radiofrequency field inhomogeneity correction was performed based on field maps of a homogeneous phantom. In a group of five healthy, 5-month-old BALB/c mice, the average sodium concentration within their prostates was measured to be 173 +/- 38 mM. Muscle tissue and bladder were also clearly visible in the sodium images, and their sodium concentrations were estimated to be 40 +/- 15 mM and 210 +/- 72 mM, respectively.
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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 | 0.001 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.001 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.002 | 0.001 |
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".