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目的:观察超声造影对肝转移癌的灌注过程及回声变化规律,探讨超声造影对转移性肝癌的诊断应用价值。方法:采用超声造影技术对26例共47个转移性肝癌病灶进行超声造影,分析研究其造影增强各时相的特征。结果:动脉相47个病灶均可见增强,28个(59.6%)为快速弥漫增强,15个(31.9%)为快速环状增强,4(8.5%)个较大的病灶呈缓慢不均匀轻度增强;延迟相43个病灶(91.5%)呈边界清晰的低回声,5例(10.6%)发现更多的肝内病灶。超声造影47个转移性肝癌中,43个(91.5%)表现为快进快出。结论:转移性肝癌超声造影表现的观察并且对恶性肿瘤肝转移病灶的个数、位置的确定,特别是对延迟相临床前期的微小转移灶的检出,对于恶性肿瘤病人的临床分期及其后续选择治疗方案有较高的临床意义。
Objective: To observe the changes of perfusion process and echo of contrast-enhanced ultrasound on liver metastasis and to explore the diagnostic value of contrast-enhanced ultrasound in the diagnosis of metastatic liver cancer. Methods: Twenty-seven cases of metastatic hepatocellular carcinoma were studied by contrast-enhanced ultrasonography. Contrast-enhanced ultrasound was used to evaluate the characteristics of each phase. Results: Forty-seven lesions were found to be enhanced in the arterial phase, 28 (59.6%) were rapidly diffusely enhanced, 15 (31.9%) were rapidly annularly enhanced, and 4 (8.5%) larger lesions were slightly uneven Enhanced; Delayed phase 43 lesions (91.5%) were clear border hypoechoic, 5 cases (10.6%) found more intrahepatic lesions. Of the 47 metastatic HCCs, 43 (91.5%) showed fast forward and fast. Conclusions: The observation of contrast-enhanced ultrasound in the diagnosis of metastatic HCC and the determination of the number and location of liver metastases in malignant tumors, especially for the detection of micrometastases in the preclinical phase of delayed-phase hepatocellular carcinoma. The clinical stage and its follow-up Select the treatment plan has a higher clinical significance.