Improving multi-pinhole CZT myocardial perfusion imaging specificity without changing sensibility by using adapted filter parameters

EJNMMI Research

Table 2 Quantitative parameters result for the two arms

	First arm (n = 100)‘Ischemia and necrosis group’		Second arm (n = 100)‘Reversible artefact group’
	Mean ± SD	95% CI	Mean ± SD	95% CI
SSRSa	12.8 ± 6.2	[11.5–14.0]	6.5 ± 1.9	[6.1–6.8]
SSRSb	12.7 ± 6.0	[11.5–13.9]	2.0 ± 1.2	[1.7–2.2]
SSRSwsa	10.7 ± 5.9	[9.6–11.9]	4.5 ± 1.7	[4.2–4.8]
SSRSwsb	10.5 ± 5.8	[9.4–11.7]	0.7 ± 0.8	[0.5–0.8]
∆	0.1 ± 1.1	[− 0.1 to 0.3]	4.5 ± 1.6	[4.2–4.8]
∆r (%)	− 0.5 ± 11.1	[− 2.7 to 1.7]	69.7 ± 16.2	[66.6–72.9]
∆ws	0.2 ± 1.0	[0.0–0.4]	3.8 ± 1.4	[3.6–4.1]
∆rws (%)	1.3 ± 10.2	[− 0.7 to 3.3]	86.5 ± 14.6	[83.6–89.4]
SSRSa/SSRSb	P = 0.54		P = 1.7*10^–49
SSRSwsa/SSRSwsb	P = 0.05		P = 3.3*10^–49

SSRS summed stress or rest score with septum, SSRSws summed stress or rest score without septum, ∆ absolute differences with septum, ∆r relative differences with septum, ∆ws absolute differences without septum, ∆rws relative differences without septum, P p-value, SD standard deviations, 95% CI confidence intervals of 95%