HEPATOCELLULAR-CARCINOMA AND CAVERNOUS HEMANGIOMA - DIFFERENTIATION WITH MR IMAGING - EFFICACY OF T2 VALUES AT 0.35 AND 1.5 T
HEPATOCELLULAR-CARCINOMA AND CAVERNOUS HEMANGIOMA - DIFFERENTIATION WITH MR IMAGING - EFFICACY OF T2 VALUES AT 0.35 AND 1.5 T
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DOI：
10.1148/radiology.168.3.2841716
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发表时间：
1988-09-01
期刊：
影响因子：
19.7
通讯作者：
IIO, M
中科院分区：
文献类型：
--
作者：
OHTOMO, K;ITAI, Y;IIO, M
本文对72例肝细胞癌（肝癌）和56例肝血管瘤患者进行了0.35或1.5T磁共振（MR）成像，以评价T2值在鉴别诊断中的作用。采用两点法计算T2值。肝癌和血管瘤的平均T_2值为58.9 ± 0.01。8.9和101.6毫秒±。25.8在0.35 T和49.1毫秒±。9.8和85.3毫秒±。21.2在1.5T.在0.35和1.5T时，肝癌和血管瘤的T2值差异有统计学意义（P <0.001）。当肝癌和血管瘤之间的T2边界设置为80 msec时，0.35 T和1.5 T下的56个病灶中的53个（94.6%）和102个病灶中的86个（84.3%）被正确分类。所有误诊的病灶均为血管瘤，除1例外，其余均小于2cm。然而，当以0.35%时T2值为70 msec，1.5T时T2值为60 msec时，超过90%的小于2cm的病变被正确诊断。在1.5T和0.35T条件下，T2测量的MR成像对于鉴别肝癌和血管瘤（包括小病变）非常有用。
Seventy-two patients with hepatocellular carcinoma (hepatoma) and 56 with hemangioma were studied with magnetic resonance (MR) imaging at 0.35 or 1.5 T to evaluate the efficacy of T2 values in differential diagnosis. T2 values were calculated with the two-point method. The mean T2 values of hepatoma and hemangioma were 58.9 msc .+-. 8.9 and 101.6 msec .+-. 25.8 at 0.35 T and 49.1 msec .+-. 9.8 and 85.3 msec .+-. 21.2 at 1.5 T. The difference in the T2 values for hepatoma and hemangioma ws statistically significant (P < .001) at both 0.35 and 1.5 T. Fifty-three of 56 lesions (94.6%) at 0.35 T and 86 of 102 lesions (84.3%) at 1.5 T were correctly classified when the T2 borderline between hepatoma and hemangioma was set at 80 msec. All misdiagnosed lesions were hemangioma, and all but one were smaller than 2 cm. However, over 90% oflesions smaller than 2 cm were correctly diagnosed when 70 msec at 0.35% and 60 msec at 1.5 T were used as borderline T2 values. MR imaging with T2 measurement was very useful for differentiating between hepatoma and hemangioma (including small lesions) at 1.5 T as well as at 0.35 T.