PT  - JOURNAL ARTICLE
AU  - M Komiyama
AU  - H Yagura
AU  - M Baba
AU  - T Yasui
AU  - A Hakuba
AU  - S Nishimura
AU  - Y Inoue
TI  - MR imaging: possibility of tissue characterization of brain tumors using T1 and T2 values.
DP  - 1987 Jan 01
TA  - American Journal of Neuroradiology
PG  - 65--70
VI  - 8
IP  - 1
4099  - http://www.ajnr.org/content/8/1/65.short
4100  - http://www.ajnr.org/content/8/1/65.full
SO  - Am. J. Neuroradiol.1987 Jan 01; 8
AB  - 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.