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首页> 外文期刊>Journal of Clinical Ultrasound: JCU >Flash-echo gray-scale imaging in the subtraction mode for assessing perfusion of small hepatocellular carcinoma.
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Flash-echo gray-scale imaging in the subtraction mode for assessing perfusion of small hepatocellular carcinoma.

机译：减影模式下的回波灰度成像用于评估小肝细胞癌的灌注。

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PURPOSE: The aim of this study was to evaluate the effectiveness of using flash-echo imaging (FEI) in the subtraction mode to assess the vascularity of small hepatocellular carcinomas (HCCs) that had been unsatisfactorily assessed with power Doppler sonography. METHODS: Between May 2000 and April 2001, we prospectively assessed nodular small HCCs using FEI in the subtraction mode after power Doppler sonography resulted in unsatisfactory images. After microbubble contrast was injected, we used the FEI technique to assess tumor perfusion in the arterial, portal, and delayed phases. RESULTS: Our study population comprised 14 patients (10 men and 4 women) whose ages ranged from 31 to 79 years (mean, 61 +/- 13.7 years) and whose tumors ranged in size from 0.8 to 3 cm (mean, 1.8 +/- 0.5 cm). Power Doppler sonography was unable to assess tumor vascularity in 6 cases because of interference by heart pulsation, and it failed to detect a color signal in the other 8 cases. All tumors were enhanced with FEI. In the arterial phase, 7 of the 14 tumors (50%) showed hyperperfusion relative to liver parenchyma enhancement, 5 of 14 (36%) showed isoperfusion, and 2 of 14 (14%) showed hypoperfusion. In the portal phase, 3 of the 14 tumors (21%) showed isoperfusion, and the other 11 (79%) showed hypoperfusion. In the delayed phase, all 14 tumors showed hypoperfusion. CONCLUSIONS: Despite heart pulsation and slow vascular flow, FEI in the subtraction mode was sensitive and effective in assessing the perfusion of small HCCs.
机译：目的：本研究的目的是评估在减影模式下使用快速回波成像（FEI）评估用动力多普勒超声检查不能令人满意地评估的小肝细胞癌（HCC）血管的有效性。方法：在2000年5月至2001年4月之间，我们采用FEI在功率多普勒超声检查导致图像不满意后以减影方式对结节性小肝癌进行了前瞻性评估。注射微泡造影剂后，我们使用FEI技术评估动脉，门静脉和延迟期的肿瘤灌注。结果：我们的研究人群包括14例患者（10例男性和4例女性），年龄范围为31至79岁（平均61 +/- 13.7岁），肿瘤大小为0.8至3厘米（平均1.8 + / -0.5厘米）。由于心脏搏动的干扰，有6例Power Doppler超声无法评估肿瘤血管，而在其他8例中，它未能检测到彩色信号。 FEI增强了所有肿瘤。在动脉期，相对于肝实质增强而言，14个肿瘤中有7个（50％）表现出过度灌注，14个肿瘤中的5个（36％）表现为等灌注，而14个肿瘤中的2个（14％）表现为灌注不足。在门脉期，14个肿瘤中有3个（21％）表现为等灌注，其他11个（79％）表现为灌注不足。在延迟阶段，所有14个肿瘤均显示灌注不足。结论：尽管有心脏搏动和缓慢的血管流动，FEI在减法模式下对评估小型HCC的灌注是敏感而有效的。

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