Table 2. ROI Values of the Uptake of ^99mTc-DTX-SLMNPs in Tumor-Bearing Nude CD-1 Mice.

organs	applied magnetic field	ROI values
		15 min	1 h	2 h	4 h
tumor folate-negative	no	2.32 ± 0.92	1.70 ± 0.46	2.94 ± 1.52	2.76 ± 1.15
	yes	2.10 ± 0.77	2.64 ± 1.02	3.90 ± 0.75	3.48 ± 1.55
tumor folate-positive	no	3.35 ± 1.37	2.06 ± 0.61	3.72 ± 1.42	3.27 ± 0.81
	yes	3.13 ± 1.86	3.29 ± 1.87	4.03 ± 0.17	3.99 ± 1.20
right lung	no	5.93 ± 2.05	3.28 ± 0.91	7.79 ± 3.20	8.15 ± 4.13
	yes	6.23 ± 1.18	8.57 ± 1.09	8.69 ± 4.74	8.11 ± 1.51
left lung	no	5.23 ± 1.46	3.54 ± 0.56	6.93 ± 2.19	6.80 ± 2.88
	yes	5.89 ± 0.69	7.83 ± 1.88	8.13 ± 2.46	7.15 ± 1.49
liver	no	16.67 ± 5.97	8.85 ± 4.87	12.14 ± 3.28	30.05 ± 1.84
	yes	58.10 ± 10.26	235.42 ± 49.22	242.67 ± 85.86	258.69 ± 21.11