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A multileaf delineator system for a radiotherapy simulator

M Karlsson1

  • 1Radiation Physics Department, University of Umeå, Sweden.

Medical Physics
|January 1, 1994
PubMed
Summary
This summary is machine-generated.

A new multileaf delineator accessory allows radiotherapy simulators to verify radiation fields before treatment. This tool accurately indicates individual multileaf collimator leaf positions on patient skin and X-ray images.

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Area of Science:

  • Medical Physics
  • Radiation Oncology

Background:

  • Conformal radiotherapy utilizes multileaf collimators (MLCs) with accelerators.
  • Dose planning systems can calculate MLC-collimated beams.
  • Verification of radiation fields on a simulator before treatment is frequently desired.

Purpose of the Study:

  • To develop an accessory for radiotherapy simulators to verify radiation fields.
  • To enable visualization of individual multileaf collimator leaf positions.

Main Methods:

  • Development of a multileaf delineator accessory for radiotherapy simulators.
  • The delineator indicates the front end of individual MLC leaves.
  • Indications are provided on both the patient's skin and in the X-ray image.

Main Results:

  • The multileaf delineator successfully indicates individual leaf positions.
  • Visualization occurs on both skin and X-ray images.
  • Anatomical structures outside and inside the field edge remain fully visible.

Conclusions:

  • The developed multileaf delineator is an effective tool for verifying radiation fields.
  • It enhances the accuracy of radiotherapy planning by providing visual confirmation.
  • The accessory maintains visibility of surrounding anatomy, crucial for treatment safety.