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A new type of sorting program for plotting of isodose curves
Acta Biochimica Et Biophysica Hungarica
|January 1, 1989
Summary
This study presents an algorithm for determining isoeffect curves from matrix data, crucial for radiation therapy planning. The method optimizes pen plotter efficiency for brachytherapy and teletherapy by efficiently plotting dose distributions within body contours.
Area of Science:
- Medical Physics
- Radiation Oncology
- Computational Geometry
Background:
- Determining isoeffect curves from matrix data is a complex problem in radiation therapy.
- Accurate plotting of dose distributions, considering body contours, is essential for treatment planning.
Purpose of the Study:
- To develop and describe an efficient algorithm for generating isoeffect curves from n x m matrix data.
- To optimize the plotting process for pen plotters in both brachytherapy and teletherapy applications.
Main Methods:
- The algorithm processes matrix data to identify points of a desired dose value.
- Points are rearranged into continuous line segments, characterized by start/end points and closure status.
- A sorting algorithm minimizes pen movement and computational tests during plotting.
Main Results:
- The algorithm successfully generates continuous isoeffect lines, respecting defined body contours.
- It enhances plotting efficiency by reducing pen motion and processing steps.
- The method is applicable to both brachytherapy and teletherapy dose calculations.
Conclusions:
- The developed algorithm provides an efficient and accurate method for plotting isoeffect curves in radiation therapy.
- Implementation on PCs demonstrates its practical utility for radiation oncology planning.
- This approach improves the precision and speed of dose distribution visualization.