Skip to main content

Table 3 Association of heart rate with signal to noise and contrast to noise ratios

From: Feasibility study of electrocardiographic and respiratory gated, gadolinium enhanced magnetic resonance angiography of pulmonary veins and the impact of heart rate and rhythm on study quality

 

Heart rate ≤ 55 bpm (n = 21)

Heart rate > 90 bpm (n = 14)

 

β coefficient

95% CI

p value

β coefficient

95% CI

p value

SNR left atrium

−2.32

−5.30, 0.66

0.13

0.21

−3.93, 4.34

0.92

SNR LAA

−1.41

−3.62, 0.80

0.21

−0.33

−3.29, 2.63

0.83

SNR PV

−2.29

−4.42,-0.17

0.03

−1.06

−4.01, 1.88

0.48

CNR LA/Myocardium

−2.19

−5.16, 0.78

0.15

−0.23

−4.35, 3.90

0.91

CNR LAA/Myocardium

−1.77

−4.12, 0.58

0.14

−0.52

−3.67, 2.63

0.75

CNR PV/Myocardium

−2.26

−4.38,-0.14

0.04

−1.10

−4.04, 1.85

0.46

  1. Legend: Beta coefficients from multiple linear regression models with the respective SNR or CNR as the dependent variable, and heart rhythm and categorical HR as predictor variables. Results for HR categories presented in this table are compared to the following ‘reference’ HR category: 55 < HR ≤ 90 bpm (n = 66), and adjusted for heart rhythm.
Back to article page

Journal of Cardiovascular Magnetic Resonance

ISSN: 1532-429X

Contact us