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目的 本研究旨在应用声学密度技术 ,研究心脏黏液瘤和肝细胞癌心脏转移性肿瘤超声组织特征 ,探讨该方法对心脏黏液瘤和肝细胞癌心脏转移性肿瘤组织特征在定性诊断中的应用价值。方法 采用 PhilipsSonos 5 5 0 0型超声诊断仪的 AD (acoustic densitometry)软件系统 ,对 1 0例心脏黏液瘤、 9例肝细胞癌心脏转移性肿瘤患者进行肿瘤组织声学密度测定。结果 心脏黏液瘤组织声学密度 (1 5 .0 0± 4 .5 1 ) d B,低于肝细胞癌心脏转移性肿瘤 (2 4 .0 4± 2 .98) d B,P<0 .0 0 1 ,最高密度与最低密度差 (1 0 .34± 4 .0 8) d B,高于肝细胞癌心脏转移性肿瘤 (8.5 0± 3.84 ) d B,P<0 .0 0 1 ,背向散射心动周期变异幅度 (0 .0 2± 0 .0 6 ) d B与肝细胞癌心脏转移性肿瘤(0 .0 1± 0 .0 3) d B无显著差异 ,P=0 .71 1。结论 心脏黏液瘤组织特征与肝细胞癌心脏转移性肿瘤组织特征有明显不同 ,声学密度技术测定可鉴别肿瘤的性质
Objective The purpose of this study is to study the ultrasonic tissue characteristics of cardiac myxoma and hepatocellular carcinoma with cardiac metastases using acoustic density technique and to explore the value of this method in the qualitative diagnosis of cardiac metastases of cardiac myxoma and hepatocellular carcinoma . Methods Acoustic densitometry (AD) software was used to measure the acoustic density of tumor tissue in 10 cases of cardiac myxoma and 9 cases of hepatocellular carcinoma with cardiac metastasis. Results The acoustic density of cardiac myxoma tissue was (15.0 ± 4.15) d B, which was lower than that of hepatocellular carcinoma (24.4 ± 2.98) d B, P <0. 0 0 1, the difference between the highest density and the lowest density was (1.34 ± 4.00 8) d B, which was higher than that in hepatocellular carcinoma (8.5 ± 3.84) d B, P <0.01, There was no significant difference in the amplitude of cardiac arrest (0.002 ± 0.06) d B and the metastatic tumor of hepatocellular carcinoma (0.01 ± 0.30) d B, P = 0.71 1 . Conclusions The characteristics of cardiac myxoma tissue are significantly different from the characteristics of metastatic tumor tissue in hepatocellular carcinoma. Acoustic densitometry can identify the nature of the tumor