Direct comparison of diagnostic and clinical values between Tc-99 m DPD and Tc-99 m PYP scintigraphy in patients with cardiac amyloidosis

Table 3 Correlations between visual scores and heart retention ratios

Visual score	Retention ratio	rho^†	P value^†	Visual score	Retention ratio	rho^†	P value^†
DPD Perugini	DPD H/WBp	0.890	0.0006^*	PYP Perugini	PYP H/WBp	0.871	0.0010^*
	DPD H/P	0.829	0.0030^*		PYP H/P	0.777	0.0082^*
	DPD H/S	0.884	0.0007^*		PYP H/S	0.871	0.0010^*
	DPD H/CL	0.761	0.0106^*		PYP H/CL	0.536	0.1102
DPD Dorbala	DPD H/WBp	0.705	0.0228^*	PYP Dorbala	PYP H/WBp	0.435	0.2087
	DPD H/P	0.701	0.0240^*		PYP H/P	0.348	0.3242
	DPD H/S	0.701	0.0240^*		PYP H/S	0.348	0.3242
	DPD H/CL	0.683	0.0294^*		PYP H/CL	0.261	0.4662

Abbreviations: DPD, technetium-99 m 3,3-diphosphono-1,2-propanodicarboxylic acid; PYP, technetium-99 m pyrophosphate; H/WBp, heart/whole-body profile; H/P, heart/pelvis; H/S, heart/skull; H/CL, heart/contralateral lung. ^* P < 0.05. ^† Spearman’s correlation

ISSN: 1471-2342