Phase analysis single-photon emission computed tomography (SPECT) myocardial perfusion imaging (MPI) detects dyssynchrony in myocardial scar and increases specificity of MPI

EJNMMI Research

Table 5 Multivariable analysis of the phase analysis parameters

Variable	OR	LCL	UCL	p value
Derivation cohort—clinical/imaging variables^a alone
Clinical/imaging variables	1.326	1.132	1.552	0.0005
Derivation cohort—clinical/imaging variables^a + entropy
Clinical/imaging variables	1.322	1.121	1.559	< 0.0001
Entropy (≥ 59%)	5.244	2.856	9.629	0.0009
Derivation cohort—clinical/cmaging variables^a + phase histogram bandwidth
Clinical/imaging variables	1.370	1.162	1.615	< 0.0001
Phase histogram bandwidth (≥ 78°)	4.186	2.386	7.345	0.0002
Derivation cohort—clinical/imaging variables^a + phase standard deviation
Clinical/imaging variables	1.331	1.133	1.563	0.0006
Phase standard deviation (≥ 26.7 °)	3.084	1.619	5.875	0.0005

Abbreviations: LCL lower confidence interval, OR odds ratio, UCL upper confidence interval
^aSee methodology section for discussion of chosen clinical/imaging variables to include in model