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JAMA. 2001;285:34.

	Since this article does not have an abstract, we have provided the first 150 words of the full text and any section headings.

The FDA has approved two new devices for delivery of radiation to treat in-stent tissue growth following restoration of blood supply to a blocked coronary artery. Both brachytherapy systems are designed to be placed at the site of the in-stent restenosis following opening of the blockage with a balloon, atherectomy, or excimer laser catheter. The radiation treatment is intended to prevent exaggerated healing response at the site and recurrence of significant blockage within the stent.

The Cordis Checkmate System (Cordis Corp, Miami, Fla) delivers g radiation through a catheter that contains a ribbon with 6, 10, or 14 radioactive seeds of iridium 192. The Novoste Beta-Cath System (Novoste Corp, Norcross, Ga) has a catheter with three lumens that allow for the passage of guide wire, a source train with 12 radioactive seeds of strontium 90 that emit b radiation, and hydraulic fluid that moves the source train to and from . . . [Full Text of this Article]

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