Perfusion CT evaluation in experimentally induced testicular torsion
Bibliographic record
Abstract
Introduction: In this study, we define the characteristics of perfusioncomputed tomography (CT) in an experimental model of testiculartorsion.Methods: Twenty male Sprague-Dawley rats were included forthe study. Torsion was applied to 10 rats and perfusion CT wasperformed in the first hour to evaluate the following perfusionparameters: blood flow (BF), blood volume (BV) and time to peak(TTP) values. Detorsion was done for the same rats, and perfusionCT was repeated 2 hours later to evaluate reperfusion. Tenrats were left as part of the control group.Results: There is significant statistical correlation between the BFand BV values in the torsion and control groups (p = 0.001 andp = 0.001, respectively). There is no statistical correlation of theTTP parameters between the groups. No correlation was foundbetween torsion and detorsion perfusion parameters.Conclusion: Perfusion CT can demonstrate the testicular perfusioninsult in an experimental model of torsion. Perfusion CT may bean alternative method for diagnosis of torsion in indeterminatecases. Following detorsion an interval of 2 hours is not sufficientfor demonstrating luxury perfusion of the testis.Introduction : Dans cette étude, nous définissons les caractéristiquesd’une tomodensitométrie (TDM) de perfusion dans un mo -dèle expérimental de torsion testiculaire.Méthodologie : Vingt rats Sprague-Dawley mâles ont été utiliséspour l’étude. Une torsion a été appliquée chez 10 rats et uneTDM de perfusion a été effectuée dans l’heure suivante pour éva -luer les paramètres suivants : débit sanguin (DS), volume sanguin(VS) et temps nécessaire pour arriver aux valeurs maximales (TVM).On a procédé à une détorsion chez les mêmes rats avant de répéterla TDM de perfusion 2 heures plus tard. Les 10 autres rats formaientle groupe témoin.Résultats : Il existe une corrélation significative sur le plan statistiqueentre les valeurs de DS et de VS dans le groupe ayant subila torsion et le groupe témoin (p = 0,001 et p = 0,001, respectivement).Par contre, aucune corrélation statistique n’a été observéedans les deux groupes concernant les valeurs de TVM, ni entreles paramètres de perfusion liés à la torsion et la détorsion.Conclusion : Une TDM de perfusion peut permettre de démontrerune anomalie de perfusion testiculaire selon un modèle expérimentalde torsion. La TDM de perfusion peut constituer une mé -thode diagnostique de rechange dans les cas indéterminés. Aprèsla détorsion, un intervalle de 2 heures ne suffit pas pour démontrerune perfusion excessive des testicules.
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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 | 0.001 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| 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".