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Improving treatment planning accuracy through multimodality imaging

S L Sailer1, J G Rosenman, M Soltys

  • 1Department of Radiation Oncology, University of North Carolina at Chapel Hill, USA.

International Journal of Radiation Oncology, Biology, Physics
|April 1, 1996
PubMed
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Physicians can now accurately define gross tumor volume (GTV) using integrated multimodality imaging in 3D treatment planning. This enhanced visualization improves accuracy and maximizes the benefits of advanced treatment systems.

Area of Science:

  • Medical Imaging
  • Radiation Oncology
  • Image Registration

Background:

  • Accurate gross tumor volume (GTV) definition is crucial for effective cancer treatment planning.
  • Three-dimensional (3D) treatment planning enhances GTV definition but faces challenges when tumors are not visible on planning computed tomography (CT) scans.

Observation:

  • A modified treatment-planning software allows interactive display of multiple, registered images.
  • Images from various modalities (e.g., magnetic resonance (MR) and diagnostic CT scans) are registered and digitized.
  • Physicians can visualize contours from all registered images simultaneously in the beam's eye view.

Findings:

  • Nineteen patients were successfully planned and treated using this multimodality imaging approach.
  • The system accommodates images from outside institutions and various anatomical sites, including brain, thorax, abdomen, and extremity.

Related Experiment Videos

  • Sequential MR scans were utilized for planning initial fields and boosts in one case.

    • Implications:

    • Successful integration of multimodality imaging into treatment planning systems is demonstrated.
    • Routine use of this technology is increasing, promising improved accuracy in radiation therapy.
    • Enhanced visualization through multimodality imaging maximizes the potential of 3D treatment planning systems.