Proton NMR relaxation times in the peripheral blood or cancer patients

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Abstract
The proton spin lattice relaxation time (T1) of serum and leucocytes of cancer patients and normal volunteers was measured using pulsed NMR techniques. There was no statistically significant difference in the serum T1 values of cancer patients relative to normal. An increase in T1 relative to normal values was detected in the white blood cells of patients with active leukaemia. In these patients T1 fell to normal levels after the initiation of treatment. The variation of leucocyte T1 with the course of the disease for five patients having leukaemia is presented.