| 杨州,李颖.动脉期短暂性肝实质强化的螺旋CT表现[J].中国医学影像技术,2005,21(7):1052~1054 |
| 动脉期短暂性肝实质强化的螺旋CT表现 |
| Spiral CT study of transient hepatic parenchymal enhancement in hepatic arterial phase |
| 投稿时间：2005-02-05 修订日期：2005-04-09 |
| DOI： |
| 中文关键词: 肝脏疾病 灌注 体层摄影术,X线计算机 |
| 英文关键词:Liver disease Perfusion Tomography, X-ray computed |
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| 中文摘要: |
| 目的 探讨动脉期短暂性肝实质强化(THPE)CT表现类型、病因和形成机制。方法 回顾性分析40例动脉期THPE CT表现的肝脏螺旋CT检查资料,观察其形态、位置及与肝脏内病灶的关系,并对其CT表现进行分类。结果 肝内肿瘤性病变23例,炎性病变8例,梗阻性黄疸、肝硬化和腹膜病变各2例,Budd-Chiari综合征、上腔静脉综合征和肝内未见明确病变各1例。THPE典型CT表现为肝动脉期肝内楔形或三角形高密度区,常位于肝脏边缘部位;门静脉期恢复正常肝脏密度。根据THPE的形态、数目、位置及与肝脏内病灶的位置关系,分为四种类型:Ⅰ型,楔形或三角形,伴或无肝内病灶;Ⅱ型,病灶周围型;Ⅲ型,外压型,表现为受压部位肝实质表面不规则形态THPE;Ⅳ型,多发多形态型。结论 THPE是螺旋CT增强扫描于肝动脉期表现的肝脏短暂性灌注异常,反映局部肝脏双重血供的重新分布,与原发性和继发性肝动脉血液供应增多或肝脏变异血供有关。 |
| 英文摘要: |
| Objective To assess the SCT appearances, the etiologies and mechanisms of transient hepatic parenchymal enhancement (THPE) in hepatic arterial phase. Methods Forty patients underwent SCT, and the images of livers were retrospectively analyzed. The CT findings, etiologies, mechanisms of the different patterns of THPE were studied. Results According to morphology and association with/without hepatic focal lesions, THPE could be divided into four types: Type Ⅰ, triangular wedged or fan-shaped areas; Type Ⅱ, THPE located around the hepatic lesion, irregular shape; Type Ⅲ, irregular THPE, due to compression of the hepatic parenchyma by perihepatic lesions or organs, without lesions in liver; Type Ⅳ, polymorphous THPE. Conclusion THPE can be detected by SCT, generally as an area of high attenuation on hepatic arterial phase images that return to normal on portal venous phase images. These findings reflected hepatic perfusion disorders, such as increased arterial blood flow and aberrant blood supply. |
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