Methods for transferring patient and plan data between radiotherapy treatment planning systems

¹Joint Department of Physics, Institute of Cancer Research and Royal Marsden NHS Trust, Sutton, Surrey, UK.

|July 1, 1997

Summary

Transferring patient and radiotherapy plan data between different treatment planning systems is feasible. Understanding differences in field shape and dose calculation methods is crucial for accurate data exchange in multicentre clinical trials.

Area of Science:

Medical Physics
Radiotherapy
Clinical Trials

Background:

Multicentre clinical trials are essential for assessing radiotherapy effectiveness.
Efficient data transfer between radiotherapy treatment planning systems is increasingly important for these trials.

Purpose of the Study:

To discuss strategies for transferring patient and plan data between radiotherapy treatment planning systems.
To illustrate these strategies using TARGET 2 and VOXELPLAN systems.
To compare differences in field shape definition and dose calculation methods.

Main Methods:

Developed a computer program to translate data formats between TARGET 2 and VOXELPLAN.
Focused on transferring CT scans, patient outlines, plan information, and block descriptions.
Did not address beam data transfer, which requires separate input.

Main Results:

Isodose locations differed by up to 3 mm between VOXELPLAN and TARGET 2 due to field shape definitions (smooth vs. stepped).
Dose distributions were generally comparable, with some discrepancies in areas of significant tissue inhomogeneity.
Transfer of patient and plan data was demonstrated as feasible.

Conclusions:

Feasibility of patient and plan data transfer between different treatment planning systems is confirmed.
Understanding system-specific differences in field shape and dose calculation is critical for successful data exchange.
Accurate data transfer is vital for the integrity of multicentre radiotherapy clinical trials.

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Methods for transferring patient and plan data between radiotherapy treatment planning systems

Area of Science:

Background:

Purpose of the Study:

Main Methods:

Main Results:

Conclusions:

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