Visualisation of Dynamic Surface Data for a Patient Display to Reduce Movement during Radiotherapy
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Bibliographic record
Abstract
The accuracy of radiotherapy treatment is dependent on the ability of the patient to maintain a pre-planned, fixed position during each radiotherapy fraction. We present a new visual feedback device that will allow patients to assist in controlling and maintaining their position during both setup and treatment. We use an optical sensor system to gather real-time positional data about the patient during radiotherapy. When the mean-surface, calculated by taking optical data over a number of breathing periods, is subtracted from each sequential surface in a dataset the result is a simple flexing surface lamina. The movement of this lamina about the zero position indicates the deviation from the mean reference surface. This makes it an ideal, intuitive visualisation approach for describing the motion of a patient around their planned setup position. We present our method for determining individually achievable bounds for the patient motion and the use of simple threshold bars and colours to indicate those bounds to the patient. We also present a method for associating a body texture with the mean reference surface and the results of an early demonstration of the device with national patient representatives. Copyright © 2011 ACTA Press.
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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 it