<正> Objective: To evaluate the therapeutic effects of 0. 014" Choice PTTM wire in chronic total occlusion angioplasty. Methods: Balloon angioplasty was attempted in 25 arteries with chronic total occlusion

with the mean time of occlusion of 17±13 months （ranging from 2 to 84 months） and mean length of 14±6 mm （ranging from 5 to 25 mm）. The morphology of the lesions included bridging collaterals （4 cases）

calcification （3 cases） and major side branch at the lesion （4 cases） . Choice PT?wire was used electively in all the cases. Results: Lesion was crossed successfully in 92% （23/25） cases

without incidences of dissection of the coronary artery with subintimal entry. Balloon angioplasy and stenting （n = 21） were performed with good immediate angiograghic results. Acute myocardial infarction or death occurred in none of the patients. Conclusion Successful recanalization of chronic coronary total occlusions using Choice PTTM wire can be achieved with good safety.