Use of a deep-learning-based lumen extraction method to detect significant stenosis on coronary computed tomography angiography in patients with severe coronary calcification

The Egyptian Heart Journal

Table 2 Comparison of CCTA and DL-LEM in detecting significant stenosis (≥ 75%) with ICA as the reference standard

	CCTA group		DL-LEM group
	Significant stenosis (≥ 75%)	Nonsignificant stenosis	Significant stenosis (≥ 75%)	Nonsignificant stenosis
Evaluation 1
ICA significant stenosis (≥ 75%)	124	48	125	47
ICA nonsignificant stenosis	179	540	163	556
Evaluation 2
ICA significant stenosis (≥ 75%)	81	0	81	0
ICA nonsignificant stenosis	147	0	131	16

CCTA coronary computed tomography angiography, DL-LEM deep learning-based lumen extraction method, ICA invasive coronary angiography