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Proton Therapy Delivery and Its Clinical Application in Select Solid Tumor Malignancies
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Clinical immobilization techniques for proton therapy.

Andrew J Wroe1, David A Bush2, Reinhard W Schulte2

  • 1Department of Radiation Medicine, Loma Linda University Medical Center, Loma Linda, CA, USA 92354 awroe@dominion.llumc.edu.

Technology in Cancer Research & Treatment
|December 21, 2013
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Summary

Patient immobilization is crucial for precise proton therapy dose delivery. This review details advanced immobilization systems developed over 23 years at Loma Linda University Medical Center for various cancers and brain conditions.

Keywords:
Immobilization.Proton therapy

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Area of Science:

  • Radiation Oncology
  • Medical Physics
  • Biomedical Engineering

Background:

  • Proton therapy utilizes the Bragg peak for conformal dose delivery, minimizing radiation to healthy tissues.
  • Accurate patient immobilization is essential for effective proton therapy, ensuring precise dose delivery and target localization.
  • Proton therapy requires specific considerations for immobilization, including maintaining the target's water-equivalent depth along the beam axis.

Purpose of the Study:

  • To review the comprehensive patient immobilization systems developed and implemented at Loma Linda University Medical Center for proton therapy.
  • To highlight the evolution and application of these systems over 23 years of clinical practice.
  • To describe immobilization techniques for various anatomical sites and conditions treated with protons.

Main Methods:

  • Review of immobilization systems employed in clinical practice at the James M. Slater Proton Treatment and Research Center.
  • Description of techniques for head and neck, prostate, upper GI, lung, and breast cancers.
  • Detailed explanation of intracranial radiosurgery immobilization for brain metastases and arteriovenous malformations (AVMs).

Main Results:

  • Extensive immobilization systems have been developed and refined over 23 years to meet the unique demands of proton therapy.
  • These systems effectively address inter- and intra-fraction motion and maintain target water-equivalent depth.
  • Successful application across a wide range of oncological and neurosurgical conditions has been demonstrated.

Conclusions:

  • Advanced patient immobilization is a cornerstone of successful proton therapy, enhancing treatment accuracy and efficacy.
  • The Loma Linda University Medical Center experience provides a robust model for developing and implementing specialized immobilization strategies.
  • Continued innovation in immobilization techniques is vital for maximizing the benefits of proton therapy in clinical practice.