磁共振成像：利用T1和T2值对脑肿瘤进行组织特征分析的可能性。
MR imaging: possibility of tissue characterization of brain tumors using T1 and T2 values.
作者信息
Komiyama M, Yagura H, Baba M, Yasui T, Hakuba A, Nishimura S, Inoue Y
出版信息
AJNR Am J Neuroradiol. 1987 Jan-Feb;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.
摘要
为评估T1和T2值在脑肿瘤组织特征分析中的作用，使用0.5-T超导磁共振系统对37例经组织学证实的脑肿瘤进行了检查。通过自旋回波和反转恢复成像序列，重建了计算得到的T1和T2图像，并计算了肿瘤的T1和T2值。还计算了最初为胃肠道肿瘤设计的弛豫率（1/T1和1/T2）、T1/T2比值和恶性指数。所有这些参数的值范围都很广，以至于无法对肿瘤组织类型进行特征分析。
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