Table 2.

Quantitative analysis of dual-energy CT and MRI findings for cardiac tumors and thrombi.

	Cardiac tumors (n = 24)					Cardiac thrombi (n = 19)	P value (tumors vs. thrombi)
	Lymphoma (n = 4)	Metastasis (n = 5)	Myxoma (n = 9)	Other* (n = 6)	All (n = 24)
Volume (cm3)	32.14 ± 8.77	36.50 ± 7.84	24.24 ± 5.84	9.89 ± 7.16	24.52 ± 3.76	3.98 ± 4.22	<0.001
CT attenuation value (HU)	94.63 ± 21.11	88.60 ± 18.88	74.11 ± 14.08	44.02 ± 17.24	73.03 ± 8.78	74.50 ± 9.87	0.912
Iodine concentration (mg/mL)	3.04 ± 0.58	2.96 ± 0.52	3.33 ± 0.39	2.43 ± 0.47	2.98 ± 0.23	1.79 ± 0.26	0.002
SI ratio†	4.13 ± 2.76	3.31 ± 3.39	10.30 ± 1.95	5.92 ± 2.14	6.90 ± 0.12	1.43 ± 0.14	0.008

Note: Estimated mean ± SE (standard error) by the mixed effects model.

*Other tumor included cavernous hemangioma (n = 2), lipoma (n = 2), angiofibroma (n = 1), and papillary fibroelastoma (n = 1).

^†For SI ratio, sample size was 16 for cardiac tumors and 12 for cardiac thrombi.

HU, Hounsfield units; SI, signal intensity.