\[The Purpose of the Clinical Study\] The purpose of this randomized comparison study is to compare the 1-stent strategy with a drug-eluting balloon and the 2-stent strategy in patients with non-LM coronary true-bifurcation lesions.
\[Hypothesis\] In this study, the researchers intend to verify the hypothesis that the 1-stent strategy with a drug-eluting balloon is non-inferior to the 2-stent strategy in terms of target lesion failures (cardiac death, target vessel MI, or target vessel revascularization).
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Patients with myocardial infarction involving an elevated ST segment, or patients with an LM coronary true-bifurcation lesion.
Patients who are ruled out by the treatment provider because the 2-stent strategy was deemed unsuitable to the patient due to a clinical condition.
A patient with aspirin or P2Y12 inhibitors (ticagrelor or clopidogrel) contraindications.
A patient who experienced psychogenic shock at the time of admission, or showed severe left ventricle insufficiency (where the left ventricle ejection fraction is less than 30%.)