超声彩色室壁动力学对心肌梗死范围定量的实验研究

目的验证超声彩色室壁动力学(CK)分析技术判断心肌梗死的准确性.方法结扎犬冠状动脉(冠脉)造成实验性急性心肌梗死模型,应用超声CK分析技术与病理解剖的结果进行对比性研究.结果结扎犬冠脉前超声CK图像由红-黄-绿-蓝色组成,色彩分布均匀,心内膜彩色移位(SEM)值为7.98～14.53mm结扎犬冠脉后造成实验性急性心肌梗死时超声CK图像绿-蓝色完全消失,仅遗留红-黄色,SEM值为1.27～6.45mm,与结扎前对比明显减少(P<0.05).超声CK图像检测的心肌梗死范围为(26.2±4.8)mm2,病理解剖测量为(22.5±4.7)mm2,两者对比显著相关(r=0.9264,P<0.01).结论超声CK图像有助于急性心肌梗死定性、定量诊断.     

彩色多普勒超声对胎儿血流监测的临床应用

本文应用彩色多普勒超声对３０例正常足月胎儿，２０例妊娠高征孕妇的胎儿及２０例过期孕妇的胎儿进行心，脑，肾及脐带血流多指标全面监测，并作多元相关回归分析，结果显示：妊高征及过期孕妇胎儿主动脉，肾动脉及脐动脉及血流速度降低，血流阻力增加，胎儿大脑中动脉血流速度增加，血流阻力降低，与正常胎儿线有统计学差别（Ｐ〈０．０５）。脐动脉ＰＩ与肾动脉ＰＩ和主动脉ＰＩ呈正相关，与大脑中动脉ＰＩ呈负相关；脐动脉ＰＩ与     

探讨彩色多普勒超声对乳腺肿块的诊断

本文对４０例乳腺肿块患者进行彩色多普勒超声检查,旨在探讨彩色多普勒超声也腺肿块的诊断价值。方法经彩色多普勒检查,观察灶内部及周边血流情况,根据血流丰富程度分成四个等级。结果：发现血流丰富程度与乳腺肿块的良恶性及肿块大小密切相关。     

彩色多普勒血流显像对小孔室间隔缺损的诊断价值

目的　评价彩色多普勒血流显像 (CDFI)对小孔室间隔缺损 (VSD)的诊断价值。方法　对经CDFI诊断的 43例小孔VSD患者与手术治疗结果进行对照分析。结果　CDFI诊断阳性预测值为 95 % ,误、漏诊各 1例 ;整体定位阳性预测值为 88% ;40例彩色穿隔血流束宽测值与手术结果建立的回归方程式为Y =0 5 47+0 616X ,r =0 815 ,P <0 0 0 1;术前估测肺动脉收缩压 (PASP)为 ( 4 76± 1 93 )kPa。结论　CDFI诊断小孔VSD具有很高的特异性和准确性 ,并可估测患者术前的PASP。     

Breast cancer angiogenesis: A quantitative morphologic and doppler imaging study

Background: Tumor growth and metastases require the development of new vessels (angiogenesis). Angiogenesis, assessed by microvessel count using immunocytochemical stain of endothelial cells, has been shown to predict metastases and correlate with early death. Recently developed color Doppler mapping can detect the “tumor flow signals” in breast cancer and help to distinguish it from benign lesions. The question is, does this tumor vascularization assessed by color Doppler mapping correlate with the angiogenesis assessed by immunocytochemistry? Methods: Eighty-four patients admitted for breast surgery were studied. The final diagnosis was made by pathology for 52 malignancies and 32 benign lesions. The color Doppler mapping of the breast lesion was made preoperatively. The following parameters were assessed: (a) vessel location (peripheral or central); (b) density of color Doppler signals; and (c) maximum systolic velocity. Tumor angiogenesis was assessed by microvessel count under light microscopy using the platelet/endothelial cell adhesion molecule antibodies (CD31) method. The correlation between maximum velocity and microvessel count of breast cancer was examined. The clinical significance of maximum flow velocity of breast cancer with various clinicopathologic factors was assessed. Results: Color signals were detected in 48 cases of 52 malignancies (92%). All tumors demonstrated signals at the periphery of the lesion but in only 13 (27%) were the signals detected within the tumor. Color signals were scored as + + or + + + in 44 (92%) patients. Pulsed wave blood flow was shown in all these 48 tumors, with maximum velocities varying from 4 to 36 cm/s. Among the 32 benign lesions, color signals were detected in 10 (31%) and all were peripheral and scored subjectively as +. Evaluation of these color Doppler mapping parameters shows no significant correlation with microvessel counts using CD31 monoclonal antibodies. However, there was a positive association (p<0.05) between nodal metastases and higher tumor flow velocity in T1 (<2 cm) breast tumors but not in larger tumors. Conclusion: Although the color Doppler mapping has been shown to be useful in distinguishing benign from malignant breast lesions, the intensity of signal and velocity of flow had no correlation with the extent of angiogenesis of breast cancer. The presence of high-flow tumor signal in early breast carcinoma is significantly associated with the presence of axillary lymph node metastases.     

2型糖尿病患者四肢血管的彩色多普勒研究

为了解２型糖尿病（ＤＭ）患者四肢动脉血管及血流的改变情况,我们应用Ａｃｕｓｏｎ １２８ ＸＰ／１０ 彩色多普勒超声仪,对５０ 例ＤＭ 患者进行测定并与正常对照组作比较。结果显示：①２ 型ＤＭ 患者动脉血管壁较正常人回声明显增加,内膜增厚,管壁不光滑、僵硬,部分患者四肢血管内可探及粥样斑块回声（１４／５０）,以胫前动脉斑块病变为多（９／５０）。其中１ 例为临床无四肢症状者;②２ 型ＤＭ 患者四肢动脉血管内径明显低于正常对照组（Ｐ＜０．０５）,且有四肢症状存在者较无症状者（除左侧胫前动脉外）血管内径有进一步变细;③正常人四肢动脉频谱形态主要呈三峰,少数出现单峰,而２型ＤＭ 患者频谱形态主要呈单峰且频谱增宽,出现舒张期持续灌注,与正常组比较有显著性差异（Ｐ值分别＜ ０．０１ 和＜ ０．０５）;④２ 型ＤＭ 患者四肢血流峰值流速（ＰＶ）较正常对照有加快,但差异无显著性,有四肢症状存在者较无症状者峰值流速有进一步加快的趋势。本试验结果提示：２ 型糖尿病患者的上、下肢动脉血管均受累,采用彩色多普勒检查患者四肢动脉血流动力学及血管定位改变,对ＤＭ 患者周围血管病变的诊断,尤对无症状患者早期诊断具有一定价值。     

应用彩色多普勒血流显像检测眼前部缺血性视神经病变

应用彩色多普勒血流显像检测眼前部缺血性视神经病变,以探讨其血流动力学变化特征。     

彩色多普勒超声检查在房间隔缺损封堵介入治疗中的应用研究

目的 研究彩色多普勒超声检查在房间隔缺损封堵介入治疗中的应用价值。方法 经食道彩色多普勒超声和经胸彩色多普勒超声引导下，对20例继发孔中央房间隔缺损用Amplatzer封堵器或类似Amplatzer国产双盘式伞状封堵器进行封堵。结果 20例房间隔缺损封堵成功，1例房间隔缺损封堵后次日封堵器脱落，经心外科再次手术，成功取出封堵器同时进行房间隔缺损修补术。对封堵成功的患者定期随访均见封堵器位置正常，未见残余分流。结论 彩色多普勒超声检查在房间隔缺损封堵介入治疗中有重要应用价值。     

慢性乙型肝炎门脉血流动力学及病理学研究

目的　研究慢性乙型肝炎 (CHB)门脉系多普勒超声 (CDFI)血流动力学改变与肝组织病变的关系。方法　本组 82例CHB皆为住院患者 ,在实施CDFI检测的同时进行肝组织活检诊断。CDFI检测与病理学诊断采用双盲法。肝CDFI检测CHB患者的门静脉主干 (MPV)、门静脉左支矢状部 (LPV)、门静脉右支(RPV)、脾门处脾静脉 (SPV)、血流动力学变化 ,即内径 (D ,cm)及流速 (cm/s)。结果　CDFI提示各组CHB患者上述静脉的V与对照组相比除CHB轻型外皆显著降低 (P <0 0 1) ,D示扩大 ,但仅在门脉高压组差异有显著意义 (P <0 0 1)。结论　CDFI提供的数量化信息能较好地鉴别CHB不同的组织病理学表现 ,有着重要的实用价值