1. Additionally, the main mechanism of restenosis after PTCA is vessel shrinkage, not intimal hyperplasia.

2. In order to overcome these limitations of PTCA, alternative interventional techniques were developed, which instead of deforming the obstructive plaque ablate this tissue.

3. The indication for the procedure was reevaluated in every case. 52 patients (mean EF 41 ± 16%) could be further treated by intensified anti-anginal medication, seven patients received bypass grafts, four partients had PTCA, three patients were listed for heart transplantation, and five patients had a combined CABG plus TMR.