Table 2.

In vivo ROI-based MET₂ results for tumor and normal ROIs (as defined in Fig. 1). Component relaxation times (T̄_2,n) and signal fractions (p_n) were tabulated for each animal using the spectra shown in Fig. 3 (panels c and d). The day post inoculation (DPI) each imaging study was performed is also given for each rat.

Rat	DPI	Tumor				Normal
#		I		II		p (%)	T̄2 (ms)
		pI (%)	T̄2,I (ms)	pII (%)	T̄2,II (ms)
1	14	4.5	25.5	95.5	68.1	100	50.7
2	15	4.6	21.2	95.4	85.6	100	44.6
3	16	21.2	28.1	78.8	80.1	100	49.2
4	14	3.0	14.5	97.0	67.4	100	50.3
5	14	8.5	24.3	91.5	70.2	100	49.6
6*	14	0	-	100	83.5	100	48.3
7*	18	0	-	100	80.8	96.8	50.1
8	18	2.0	12.6	98.0	66.2	100	49.6
9	21	3.7	21.9	96.3	85.3	100	49.8
10	18	7.2	17.7	92.8	88.2	96.8	50.1
11*	18	0	-	100	57.2	100	44.2
Mean	16.4±2.4	6.8±6.2	20.7±5.4	93.2±6.2	76.4±9.3	99.4±1.3	48.8±2.3

^*Indicates animals whose tumor T₂ spectra exhibited a single peak (n.b., these three animals exhibited relatively small tumors). As a result, spectra from these animals are not given in Fig. 3. For these animals, component values for the single observed peak are given in the long-lived component columns and these values were ignored in calculating the mean component values across animals for tumor results.