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Table 1 Mean values of peak strain, peak twist and untwist rates in the amyloid cohort and in volunteers.

From: Quantitative assessment of myocardial mechanics in patients with cardiac amyloid using cardiovascular magnetic resonance myocardial feature tracking

Strain/Twist

Group

Mean value - peak % (+/-SD)

Sig (2 tailed)*

Ell

Volunteer

-18.78 (+/-3.7)

p<0.005

 

Amyloid

-6.73 (+/-11)

 

Err

Volunteer

36.97 (+/-26.5)

p=0.510

 

Amyloid

35.00 (+/-35)

 

Ecc endo

Volunteer

-25.96 (+/-11.6)

p<0.005

 

Amyloid

-17.81 (+/-11.4)

 

Ecc epi

Volunteer

-17.26 (+/-9.6)

p<0.005

 

Amyloid

-10.34 (+/-9.3)

 

Twist(degrees)

Volunteer

8.05 (+/-6.1)

p=0.025

 

Amyloid

3.05 (+/-6.42)

 

Untwist-rate (degrees/s)

Volunteer

-65.5 (+/-46.42)

P=0.04

 

Amyloid

-19.2 (+/-45.6)

 
  1. * Significance tested with an unpaired t-test