14 In this study, the overall procedural time and radiation dose showed a trend to decrease in the tip-in group but it had not reached statistical significance yet.
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Efficiency of the Guide Extension Catheter-Facilitated Tip-in Technique in the Recanalization of Coronary Chronic Total Occlusion.
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The sentences
There was a trend in decreasing total operation time and radiation dose, but it did not reach statistical significance.