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Table 5 Inter- and intra-observer variability of first-perfusion and tissue tracking

From: Left ventricular subclinical myocardial dysfunction in uncomplicated type 2 diabetes mellitus is associated with impaired myocardial perfusion: a contrast-enhanced cardiovascular magnetic resonance study

 

Intra-observer

(n = 30)

95% CI

Inter-observer

(n = 30)

95% CI

ICC

ICC

Upslope

0.979

0.957–0.990

0.977

0.952–0.989

TTM (s)

0.987

0.973–0.994

0.983

0.964–0.992

Max SI

0.983

0.965–0.992

0.982

0.962–0.992

PS (%)

 Radial

0.952

0.899–0.977

0.920

0.833–0.962

 Circumferential

0.934

0.862–0.968

0.915

0.823–0.960

 Longitudinal

0.864

0.717–0.935

0.849

0.316–0.948

PSSR (1/s)

 Radial

0.938

0.871–0.970

0.925

0.843–0.964

 Circumferential

0.866

0.720–0.936

0.847

0.596–0.934

 Longitudinal

0.828

0.641–0.918

0.777

0.285–0.913

PDSR (1/s)

 Radial

0.936

0.867–0.969

0.905

0.799–0.955

 Circumferential

0.881

0.751–0.943

0.871

0.732–0.938

 Longitudinal

0.883

0.756–0.944

0.824

0.633–0.916

  1. ICC, intraclass correlation coefficient
  2. All p < 0.001