Comparing the Prognostic Value of Stress Myocardial Perfusion Imaging by Conventional and Cadmium-Zinc Telluride Single-Photon Emission Computed Tomography through a Machine Learning Approach

Table 2

Univariate statistical analysis of all the parameters of C-SPECT and the CZT-SPECT.

Parameters	C-SPECT			CZT-SPECT
	Patients with no event	Patients with event	value	Patients with no event	Patients with event	value
SSS			0.053			<0.001
SRS			0.163			0.240
SDS			0.841			0.310
TPD			0.043			<0.001
Stress SWM			0.007			0.018
Stress SWT			0.002			0.020
Stress EDV			0.031			0.044
Stress ESV			0.006			0.008
Stress EF			<0.001			0.005
Rest SWM			0.048			0.070
Rest SWT			0.128			0.110
Rest EDV			0.493			0.790
Rest ESV			0.283			0.420
Rest EF			0.098			0.160

Statistically significant at: 0.05, 0.001, <0.001. Abbreviations. EDV: end-diastolic volume; EF: ejection fraction; ESV: end-systolic volume; SDS: summed difference score; SRS: summed rest score; SSS: summed stress score; SWM: wall motion; SWT: wall thickening; TPD: total perfusion defect.