Biodistribution and SPECT Imaging Study of ^99mTc Labeling NGR Peptide in Nude Mice Bearing Human HepG2 Hepatoma

Table 1

Rf values of free ^99mTcO₄⁻, ^99mTc-colloid and ^99mTc-NGR.

Rf value	Free ^99mTcO4^−	^99mTc-colloid	^99mTc-NGR
Acetone	0.9~1.0	0.0	0.0
Vethanol : Vammonia water : Vwater = 2 : 1 : 5	0.9~1.0	0.0	0.7~0.8