Purpose: We wished to know North American Symptomatic Carotid Endarterectomy Trial(NASCET) and European Carotid Stenosis Trial(ECST) significance that is different measuring mean of intracranial
Method: We did to 73 patients who was enforced stent implantation by intracranial arteriostenosis from July, 2002 to July, 2006 and sex ratio is a man：33 peoples, woman：40 peoples and age was to 24-78(Mean：58.9). Comparison of stenosis rate before stent insertion and residual stenosis rate after stent insertion used measuring mean of NASCET and ECST?and statistical analysis uses Wilcoxon signed rank test and analyzed by retrospective study. NASCET’s method used Rulerds program(Asan Medical center information team, Seoul, Korea) and ECST’s method used Quantitive Coronary Analysis Package (Pie Medical Imaging BV, Netherlands ).
Results: In measurement of NASCET(Rulerds) and ECST(QCA) average ± standard deviation of the stenosis rate appeared by 71.96 ± 12.56 and 72.76 ± 12.51 and did not appear to be significant statistically(p=0.306). In NASCET(Rulerds) and ECST(QCA) measurement average ± standard deviation of the residual stenosis rate appeared by 13.28 ± 9.73 and 17.52 ± 11.88 and do appear to be significant statistically (p<0.05). ECST(QCA)=0.95NASCET(Rulerds)+6 in value that measure Stenosis rate before Stent insertion, In remaining Residual stenosis rate after Stent insertion was ECST(QCA)=0.98NASCET(Rulerds)+8.
Conclusion: It was no significance of NASCET(Rulerds) and ECST(QCA) in stenosis rate measurement of intracranial arteriostenosis region.
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