Measurements of the effect of storage at various temperatures on the T1 of ex vivo tissues.

The detailed measurements of the effects of storage at various temperatures on the nuclear magnetic resonance (NMR) spin-lattice relaxation time T1 are reported. On the basis of the results, a method to monitor tissue transformation in hyperthermia of biological systems using magnetic resonance imaging (MRI) techniques is discussed. The method was found on proton relaxation time spin-lattice T1 variation measurements. Parameter F described as tissue structure transformation and/or protein denaturation rate index is discussed.