1.

Baseline clinical characteristics of study population.

	Subintimal plaque modification		P-value
	Traditional (n = 32)	Modified (n = 22)
Values are mean ± SD or n (%). CABG: coronary artery bypass grafting; CCS: Canadian cardiovascular society; CKD: chronic kidney disease; LVEF: left ventricular ejection fraction; MI: myocardial infarction.
Age, yrs	60.8 ± 9.2	57.2 ± 10.2	0.18
Male	23 (71.9%)	17 (77.3%)	0.76
Current smoker	22 (68.8%)	13 (59.1%)	0.57
Medical history
Hypertension	25 (78.1%)	16 (72.7%)	0.75
Diabetes mellitus	13 (40.6%)	13 (59.1%)	0.27
Previous MI	11 (34.4%)	6 (27.3%)	0.77
Previous CABG	7 (21.9%)	4 (18.2%)	0.99
Arial fibriallation	5 (15.6%)	2 (9.1%)	0.69
CKD	8 (25.0%)	4 (18.2%)	0.74
CCS angina score			0.86
Ⅰ/Ⅱ	11 (34.4%)	12 (54.5%)
Ⅲ/Ⅳ	21 (65.6%)	10 (45.5%)
Baseline LVEF	53.6% ± 5.8%	54.3% ± 7.0%	0.67