Differentiation between hemangiomas and cysts of the liver with nonenhanced MR imaging: Efficacy of T2 values at 1.5 T |
| |
Authors: | Wei Li Michael A. Nissenbaum Michael K. Stehling Alexander Goldmann Robert R. Edelman |
| |
Abstract: | The authors studied the utility of non-contrast-agent-enhanced magnetic resonance (MR) imaging for differentiating cysts and cavernous hemangiomas of the liver. Nineteen patients with hemangiomas (51 lesions) and 16 with cysts (30 lesions) were studied with a 1.5-T MR imager. T2 values were calculated with the two-point method to evaluate the efficacy of T2 values in the differentiation between hemangiomas and cysts of the liver. For lesions larger than 1 cm, the mean T2 value of cysts (306 msec ± 156) was significantly longer than that of hemangiomas (113 msec ± 15) (P < .0001); there was no overlap of the ranges for T2 values of hemangiomas and cysts. All cysts larger than 1 cm could be differentiated from hemangiomas by using a threshold T2 value of 140 msec. This study suggests that calculated T2 values permit differentiation between hemangiomas and cysts larger than 1 cm at 1.5 T. |
| |
Keywords: | Angioma, gastrointestinal tract, 761.3194 Liver, cysts. 761.3121 Liver, MR, 761.121411, 761.121412 Liver neoplasms, diagnosis, 761.3121, 761.3194 Liver neoplasms, MR, 761.121411, 761.121412 Tissue characterization |
|
|