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

EJNMMI Research

Table 3 Quantitative results for the three subgroups of the first arm

	‘Ischemia subgroup’		‘Necrosis subgroup’		‘Ischemia associated necrosis subgroup’
	Mean ± SD	95% CI	Mean ± SD	95% CI	Mean ± SD	95% CI
Patients (n)	17		67		16
SSRSa	9.9 ± 6.7	[13.0–6.8]	13.3 ± 6.1	[13.1–13.4]	13.8 ± 5.8	[13.5–14.1]
SSRSb	9.9 ± 6.4	[12.9–7.0]	13.2 ± 6.0	[13.1–13.3]	13.6 ± 5.4	[13.7–14.3]
SSRSwsa	8.1 ± 6.3	[11.0–5.1]	11.1 ± 5.7	[10.9–11.2]	12.1 ± 5.7	[11.8–12.4]
SSRSwsb	8.3 ± 6.3	[11.2–5.4]	10.8 ± 5.6	[10.7–10.9]	11.8 ± 5.5	[11.5–12.0]
∆	− 0.1 ± 0.9	[− 0.5 to 0.4]	0.1 ± 1.2	[0.0–0.1]	0.3 ± 1.2	[0.2–0.3]
∆r (%)	− 1.6 ± 11.9	[− 7.1 to 3.9]	− 0.5 ± 11.5	[− 0.8 to − 0.2]	0.7 ± 8.5	[0.3–1.2]
∆ws	− 0.2 ± 1.0	[− 0.7 to 0.2]	0.3 ± 0.9	[0.2–0.3]	0.3 ± 1.2	[0.3–0.4]
∆rws (%)	− 3.6 ± 15.9	[− 10.9 to 3.7]	2.1 ± 8.4	[1.9–2.3]	3.2 ± 8.8	[2.8–3.7]
SSRSa/SSRSb	P = 0.79		P = 0.67		P = 0.43

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%