Table 3.

CMR Findings (n=40 STEMI Patients and n=20 Controls)

	Controls (n=20)	Acute Scan (n=40)	Follow‐up Scan (n=40)	Change Between Acute and Follow‐up	P Value
LV EDV, mL	148±34	172±38	182±49	−9±25	0.02a 0.01b
LV ESV, mL	55±16	90±30	88±38	2±24	0.001a 0.001b
LV EF, %	63±5	49±8	53±10	−5±8	0.001a 0.001b
LV mass, g	108±21	112±35	104±26	8±27	NS
LV wall thickness in remote myocardium—diastole, mm	7.2±0.7	7.1±1.3	6.7±1.3	0.4±1.3	NS
LV wall thickness in remote myocardium—systole, mm	12.0±1.3	12.0±1.8	11.2±1.8	0.8±2.3	NS
LV wall thickening in remote myocardium, %	66±14	77±40	75±26	2±43	NS
LV wall motion in remote myocardium, mm	7.7±2.5	9.2±2.6	8.9±2.6	0.3±2.9	0.04a 0.10b
Infarct size, % of LV	NA	27.4±14.6	19.5±10.5	7.9±7.2	0.0001
Infarct size, g	NA	20.2±13.6	14.4±9.4	5.8±5.9	0.0001
AAR, % of LV	NA	42.0±12.0	NA	NA
T2Remote, ms	50±4	50±3	48±2	1±3	0.94a 0.001b
T2Infarct, ms	NA	65±5	57±5	9±7	0.0001
T2Core, ms	NA	51±5	47±3	4±5	0.001
T1Remote, ms	1000±25	1032±51	1004±39	29±52	0.001a 0.66b
T1Infarct, ms	NA	1245±75	1141±53	104±88	0.0001
T1Core, ms	NA	1025±89	1029±52	−5±79	0.74
ECVRemote, %
Whole cohort (n=40)	26.4±2.1	27.9±2.1	27.0±2.1	0.9±1.9	0.01a 0.30b
With adverse LV remodeling (n=8)	NA	29.5±1.4	28.6±1.5	0.9±2.2	0.27
Without adverse LV remodeling (n=32)	NA	27.4±2.0	26.6±2.1	0.9±1.9	0.02
ECVInfarct, %	NA	69.2±9.6	70.4±19.9	−1.2±18.3	0.71

AAR indicates area‐at‐risk; CMR, cardiovascular magnetic resonance imaging; ECV, extracellular volume fraction; EDV, end diastolic volume; EF, ejection fraction; ESV, end systolic volume; LV, left ventricle; MVO, microvascular obstruction; NA, not applicable; NS, not statistically significant; STEMI, ST‐segment elevation myocardial infarction.

^aControl vs acute scan.

^bControl vs follow‐up scan.