[Computerized dosimetry in curie therapy].

Area of Science:

• Medical Physics
• Radiation Oncology
• Radiotherapy Technology

Context:

• Curietherapy (brachytherapy) involves placing radioactive sources within or near a tumor.
• Accurate dose calculation is critical for effective cancer treatment and minimizing side effects.
• Manual treatment planning can be time-consuming and prone to errors.

Purpose:

• To describe an automated system for curietherapy treatment planning.
• To detail the process of reconstructing radioactive implants from radiographic images.
• To present the capabilities of the system in generating dose distributions and isodose curves.

Summary:

• The Istituto Nazionale Tumori of Milano has implemented routine automatic treatment planning for curietherapy.
• The system reconstructs radioactive implants using orthogonal or stereo-roentgenograms.
• It generates tabular dose data and automatically plots isodose curves with source projections using an interactive plotter.

Impact:

• Streamlines the curietherapy planning process, enabling faster treatment delivery.
• Enhances the accuracy of absorbed dose calculations in brachytherapy.
• Provides a visual tool for understanding radiation distribution, aiding clinical decision-making.