Automatic Assessment of Mitral Regurgitation Severity Using the Mask R-CNN Algorithm with Color Doppler Echocardiography Images

Table 1

Medical history, clinical presentation, and baseline TTE characteristics of the study patients.

	Age (Yrs)	Male	Medical history and clinical presentation						Baseline TTE characteristics					Time (minutes)
			CHD	MI	HTN	DM	TIA	NYHA≥III	LVDd, cm	LVDs, cm	LA, cm	EF, %	Reduced EF, <50%
Mild (grade I)	61 (29-82)	126	59	14	56	41	29	19				58 (46-67)	7
Moderate (grade II)	68 (31-88)	117	102	51	82	37	27	47				57 (44-66)	19
Moderate (grade III)	71 (41-90)	121	125	62	103	38	44	91				50 (36-63)	55
Severe (grade IV)	73 (43-92)	135	140	71	134	47	48	135				44 (30-61)	98

CHD: coronary artery heart disease; MI: myocardial infarction; HTN: hypertension; DM: diabetes mellitus; TIA: transient ischemic attack; NYHA: New York Heart Association; time: the time taken to quantitatively evaluate the severity of MR according to the 2017 ASE guidelines. Values are median (interquartile range), , or (%), unless otherwise indicated.