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Table 3 Comparison of EDV, ESV, and LVEF determined using conventional SPECT, IQ-SPECT, and CMR

From: CMR validation of left ventricular volumes and ejection fraction measured by the IQ-SPECT system in patients with small heart size

 

IQ

Conventional

CMR

Conventional vs. IQ

Conventional vs. CMR

IQ vs. CMR

(a) Normal group

EDV (mL)

87.7 ± 14.9

63.4 ± 16.3

129.7 ± 21.5

r = 0.824

P < 0.001

r = 0.883

P < 0.001

r = 0.758

P < 0.001

ESV (mL)

43.8 ± 10.0

18.1 ± 9.2

60.7 ± 11.7

r = 0.800

P < 0.001

r = 0.638

P = 0.002

r = 0.607

P = 0.005

LVEF (%)

50.6 ± 4.3

73.4 ± 8.4

53.2 ± 5.8

r = 0.652

P = 0.002

r = 0.181

P = 0.002

r = 0.652

NS

(b) Small-heart group

EDV (mL)

49.5 ± 9.6

45.9 ± 9.0

78.2 ± 18.8

r = 0.848

P < 0.001

r = 0.471

P = 0.010

r = 0.469

P = 0.010

ESV (mL)

19.2 ± 6.9

12.1 ± 6.8

28.1 ± 10.6

r = 0.779

P < 0.001

r = 0.539

P = 0.003

r = 0.408

P = 0.028

LVEF (%)

62.1 ± 7.8

75.0 ± 11.4

64.6 ± 8.8

r = 0.780

P < 0.001

r = 0.484

P = 0.007

r = 0.522

NS

  1. Conventional conventional SPECT, CMR cardiovascular magnetic resonance, IQ IQ-SPECT, EDV end-diastolic volume, ESV end-systolic volume, LVEF left ventricular ejection fraction, NS not statistically significant
  2. Data are represented as the mean ± standard deviation