Table 2

Cardiac magnetic resonance characteristics

Healthy control subjects
(n=20)
Patients with myocardial infarction (n=20)P valuePatients with myocardial infarction and repeat imaging (n=14)
Acute3 monthsP value
Indexed EDV (mL/m2)74.7±14.486.2±19.10.0483.2±16.287.1±16.10.3
Indexed ESV (mL/m2)26.8±7.346.7±16.0<0.000144.8±13.841.6±12.10.2
Indexed SV (mL/m2)47.9±9.139.5±7.50.00338.4±7.545.5±8.40.001
Ejection fraction (%)64.4±5.546.7±8.8<0.000146.9±8.952.9±7.90.0004
Mass index (g/m2)57.9±13.178.1±11.3<0.000175.2±9.465.2±10.40.003
ECV (%)27.1±3.637.9±2.5<0.000137.0±1.936.7±3.50.9
Native T1 remote/healthy (ms)1123±371143±440.11130±441110±410.2
MEMRI T1 remote/healthy (ms)835±28859±360.02853±35855±320.8
Infarct Characteristics
 Native T1 peri-infarct (ms)1278±551278±561195±370.0005
 Native T1 infarct (ms)1395±731389±841295±710.002
 MEMRI T1 peri-infarct (ms)1007±311009±33903±35<0.0001
 LGE (% LV)30.3±10.230.5±9.619.3±7.3<0.0001
Core Infarct Slice (%)
 LGE (FWHM)34.9±13.935.1±12.524.2±6.50.005
 T2 area-at-risk47.1±11.0
 T1 area-at-risk47.6±15.646.9±15.737.2±12.20.0004
 MEMRI T1 injury40.5±11.940.3±11.626.9±11.0<0.0001
Influx constant
(Ki, mL/100 g/min)
 Remote/healthy23.1±3.623.0±3.00.223.3±2.823.0±3.20.8
 Peri-infarct16.7±3.816.5±3.522.8±3.5<0.0001
 Infarct11.7±3.511.5±3.714.0±1.20.1
  • Values quoted are mean±SD or median±IQR.

  • Bold values indicate statistical significance (<0.05).

  • AAR, area at risk; ECV%, extracellular volume fraction; EDV, end-diastolic volume; EF, ejection fraction; ESV, end-systolic volume; FWHM, full width at half maximum; LGE, late gadolinium enhancement; MEMRI, manganese-enhanced MRI; SV, stroke volume.