The Auxiliary Role of Cardiac Magnetic Resonance Feature-Tracking Parameters in the Differentiation between Cardiac Amyloidosis and Constrictive Pericarditis

Table 1

Demographic and CMR parameters of the study population.

Variable	Age (mean ± SD)	Gender (male) %
CA	57 ± 10	68.4%
CP	51 ± 17	73.7%
Control	32 ± 4	50%
Study group	CA	CP	Control
Frequency (n)	19	19	28
CMR parameter	Mean ± SD	Mean ± SD	Mean ± SD
LVGLS%	8 ± 3	13 ± 2.7	18 ± 1.4
LVGCS%	10.5 ± 3.79	15 ± 3.2	18.7 ± 2.18
LVGRS%	17.5 ± 8.89	31 ± 12.3	40 ± 7.8
RVGLS%	14.6 ± 5.70	19.4 ± 5.90	23.6 ± 4.48
RVGCS%	9.9 ± 2.92	9.2 ± 4.00	17.7 ± 1.79
RVGRS%	16 ± 5.3	14.2 ± 5.96	31.1 ± 7.75
LVEF%	38 ± 11.9	52.5 ± 6.63	58 ± 2.7
LVEDVI (ml)	82.5 ± 33.99	64.3 ± 17.76	79.9 ± 2.94
LVESVI (ml)	52.6 ± 32.94	29.9 ± 6.64	34.5 ± 2.82
RVEF%	39 ± 12.0	47 ± 7.8	56 ± 2.2
RVEDVI (ml)	70.9 ± 25.40	71.2 ± 20.08	63.6 ± 3.00
RVESVI (ml)	43.3 ± 18.25	36.8 ± 12.27	28.8 ± 2.29
IAS thickness	5.8 ± 1.53	1.4 ± 0.2	1.4 ± 0.19
LV mass index	92.8 ± 25.81	57 ± 10.2	54.9 ± 8.57
LA area (cm^2)	27.4 ± 7.24	24 ± 3.4	18 ± 1.7
RA area (cm^2)	25.3 ± 4.10	18 ± 2.3	16.8 ± 1.60

CA: cardiac amyloidosis, CP: constrictive pericarditis, LV: left ventricle, RV: right ventricle, EF: ejection fraction, GLS: global longitudinal strain, GCS: global circumferential strain, GRS: global radial strain, CI: confidence interval, EDVI: end-diastolic volume index, ESVI: end-systolic volume index, IAS: interatrial septum, LA: left atrium, and RA: right atrium.