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Related Experiment Videos

Intracoronary radiation with a 32P source wire

D P Lee1, S Lo, K M Forster

  • 1Division of Cardiovascular Medicine, Stanford University Medical Center, CA, USA.

Herz
|November 17, 1998
PubMed
Summary

The Proliferation REduction with Vascular ENergy Trial (PREVENT) investigated intracoronary brachytherapy to prevent restenosis after coronary intervention. This study evaluated the safety and efficacy of 32P beta-emitter radiation doses.

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Area of Science:

  • Cardiology
  • Interventional Cardiology
  • Radiation Oncology

Background:

  • Restenosis, the re-narrowing of arteries after intervention, remains a clinical challenge.
  • Intracoronary brachytherapy is being explored as a method to reduce restenosis rates.

Purpose of the Study:

  • To evaluate the safety and efficacy of intracoronary brachytherapy in preventing restenosis.
  • To assess different radiation doses of 32P delivered via a catheter system.

Main Methods:

  • Prospective randomized study design.
  • Delivery of a 32P beta-emitter on a wire tip to the target lesion post-intervention.
  • Radiation doses of 16, 20, and 24 Gy administered.
  • Follow-up with angiography and intravascular ultrasound (IVUS) at 6 months.

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Main Results:

  • Phase I of the trial has been completed.
  • Results are anticipated in early 1999.

Conclusions:

  • The PREVENT trial is evaluating a novel approach to manage post-intervention restenosis.
  • Further data analysis is required to determine the definitive outcomes and optimal radiation dosage.