Correlation of Dosimetric Parameters With Subclinical Liver Function Test Alterations After Radiotherapy for Upper Gastrointestinal Tract Tumors
Bibliographic record
Abstract
Purpose: To characterize conditions of radiation induced liver diseases (RILD) after radiation therapy administered for upper gastrointestinal tract tumours, not involving the liver. Method & Materials: this is a retrospective study of 169 patients treated by three dimensional conformal radiations for upper gastrointestinal tract tumours between 2002 and 2008 at the Michallon hospital. Cumulative and differential DVHs (Dose Volume Histogram) were extracted from TPS generated files and liver function tests (ALAT, ASAT, GGT and AP) and tumour markers (CA 19.9 and CEA) from patient records at four different time points (before treatment, and one, three, and six months after the end of treatment). Liver function alteration was defined as an increase in one parameter over 1.5 times the upper normal limit. All these data have been stored and statistically worked out using Lyman model parameters. Results: 34 patient records were studied. Twelve patients had RILD but none at six months. Results are consistent with the Burman description. Dosimetric profiles are different and a correlation appears between RILD and the level of doses given to liver. V40Gy is the most predictive dosimetric parameter for subclinical liver function changes. Conclusion: While dosimetric parameters are predictive of liver biological disorder, the Lyman model is not predictive of these mild disorders.
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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) | 0.000 | 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".