MR IMAGING - POSSIBILITY OF TISSUE CHARACTERIZATION OF BRAIN-TUMORS USING T1 AND T2 VALUES

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  • 1 January 1987
    • journal article
    • research article
    • Vol. 8  (1) , 65-70
Abstract
To evaluate the usefulness of T1 and T2 values for tissue characterization of brain tumors, 37 histologically confirmed brain tumors were examined with a 0.5-T superconductive MR system. With spin-echo and inversion-recovery imaging sequences, computed T1 and T2 images were reconstructed, and T1 and T2 values of the tumors were calculated. Relaxation rates (1/T1 and 1/T2), T1/T2 ratios, and malignancy indexes, which were originally designed for gastrointestinal tumors, were also calculated. Values of all these parameters were so wide-ranged that it was impossible to characterize the tumor tissue types.