Quantitative 3D scintigraphy shows increased muscular uptake of pyrophosphate in idiopathic inflammatory myopathy

EJNMMI Research

Table 3 Results of semi-automated quantification of thigh muscles in patients with polymyositis or dermatomyositis and control persons

	All patients (N = 83)			Controls (N = 46)			p value
	Estimate	95% CI	Min–max	Estimate	95% CI	Min–max	p value
SUV_mean	0.34	[0.32;0.36]	0.15–0.73	0.21	[0.20;0.22]	0.14–0.29	< 0.0001
Slope of activity per length unit of muscle (SUV_mean mm⁻¹)	− 0.00024	[− 0.00030;− 0.00018]	− 0.00097 to 0.00047	− 0.00010	[− 0.00013;− 0.00007]	− 0.00028 to 0.00014	< 0.0001