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目的探讨肝转移癌超声造影检出能力、造影动脉相增强模式特点。方法 35例肝转移癌患者为研究对象,行超声造影检查。记录病灶大小、位置、数目、各增强时相的表现。结果①35例肝转移癌患者常规超声共检出病灶182个,超声造影共检出386个,超声造影检出率明显增加(P<0.05)。②动脉相重点观察的76个肝转移癌病灶表现四种灌注特征:Ⅰ型(26.3%),周边环状增强,中心不增强或有少量点状、短线状血管向中心伸延。Ⅱ型(46.1%),周边环状增强,内部少量均匀增强。Ⅲ型(11.8%),周边环状增强,内部少量增强,可见细长分枝状血管。Ⅳ型(15.8%),快速整体团状增强,内部团状或网状走行血管。结论超声造影增加了肝转移病灶的检出数目;其增强模式及造影表现有利于定性诊断。
Objective To investigate the detection of liver metastases by contrast-enhanced ultrasound and contrast-enhanced arterial phase imaging. Methods Totally 35 patients with liver metastases were studied by contrast-enhanced ultrasound. Record the size of the lesion, location, number, performance of the enhanced phase. Results ① Of the 35 patients with liver metastasis, 182 were detected by conventional ultrasound and 386 by contrast-enhanced ultrasound. The detection rate of CEUS increased significantly (P <0.05). (2) There were four perfusion characteristics in 76 hepatic metastatic carcinomas observed mainly in arterial phase: type Ⅰ (26.3%), peripheral enhancement, central lesion or a small amount of punctate and short-shaped blood vessels extending to the center. Type Ⅱ (46.1%), the surrounding ring-shaped enhancement, a small amount of internal uniform enhancement. Type Ⅲ (11.8%), the surrounding ring-shaped enhancement, a small amount of internal enhancement, showing slender branch-shaped blood vessels. Type Ⅳ (15.8%), rapid overall mass enhancement, intrastrus flow or reticular blood vessels. Conclusions Contrast-enhanced ultrasound enhanced the number of liver metastases detected; its enhancement pattern and imaging performance were favorable for the qualitative diagnosis.