| 廖玉珍,刘小林,王秋良,罗志刚.0.5T MR机对肝脏小结节病变的诊断价值[J].中国医学影像技术,2001,17(8):754~756 |
| 0.5T MR机对肝脏小结节病变的诊断价值 |
| Diagnostic Value of Using 0.5-T MR System for Small Liver Nodules |
| 投稿时间：2001-01-29 |
| DOI： |
| 中文关键词: MR 肝脏 结节 肝细胞癌 血管瘤 转移瘤 |
| 英文关键词:MR Liver Nodules Hepatocellular carcinoma Angioma Metastasis |
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| 中文摘要: |
| 目的 探讨0.5TMR扫描系统对肝脏小结节病变的诊断价值。方法 回顾性分析34例肝脏小结节(≤3cm)的MRI影像特点。使用0.5T MR扫描系统,SE序列为T1WI、质子像(PD)、T2WI及重T2WI。其中6例行Gd-DTPA强化。结果 检出21例直径小于或等于2cm的肝脏小结节病灶,其中MR确诊19例(90％),10例肝癌、2例转移瘤、6例血管瘤、1例再生结节,误诊2例。13例直径大于2cm、小于3cm的肝脏小结节MRI均诊断正确(100％),包括肝癌10 |
| 英文摘要: |
| Purpose To assess the effect of 0.5-T MR system in the detection and diagnosis of small hepatic nodules. Methods Thirty-four patients with small hepatic nodules (≤3cm) retrospectively analyzed.The final diagnosis of the nodule liver was proven by surgical pathologic or／and clinic follow-up.MR image was performed on a 0.5-T MR system and in consisted the conventional SE sequences including coronal and axial planes T1-WI, PD, T2-WI, heavily T2-WI.6 cases of thirty four patients were examined after Gd-DTPA.Results In the 21 patients with hepatic nodules which the diameter is less than or equal to 2cm,19 cases were diagnosed correctly (90％) (included 10 hepatocellular carcinomas (HCC),6 angiomas,1 regeneral nodule) and 2 cases were mistaken.13 cases with hepatic nodules (1ess than 3cm and more than 2cm) were diagnosed correctly(100%) (10HCC,2 angiomas,l regeneral nodule).MR signal characterisitic of small HCC is slight hyperintensity on T2-WI(17／20,85％),heterogeneous (11／20,55％).When tumors more than 2cm、HCC were associated with capsule.The angiomas were hyperintensity on T2-WI and heavily T2-WI (8／8 100％).The regeneral nodules were hypointensity on T2-WI(2／3 67％). Conclusion 0.5T MRI is one of the best Methods for the detection and diagnosis of hepatic nodules. |
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