超声造影在乳腺良恶性肿瘤鉴别诊断中的价值

目的初步探讨超声造影在乳腺良恶性肿瘤鉴别诊断中的价值。方法用声诺维SonoVue造影剂对40例42个乳腺肿块进行超声造影检查,记录并分析造影灌注过程。结果恶性组不均匀增强占84.2%（16/19）,良性组不均匀性增强占19.0%（4/21）,恶性组高增强占68.4%（13/19）,良性组高增强占9.5%（2/21）,恶性组以慢退为主（14/19）,良性组以快退为主（17/21）,恶性组不均匀增强明显大于良性组,恶性组高增强明显大于良性组,两组之间的差异具有显著性意义（P〈0.05）。结论超声造影为乳腺良恶性肿瘤的鉴别诊断提供了更加准确的信息,有助于良恶性的鉴别。     

超声造影时间强度曲线分析在乳腺肿瘤诊断中的应用

目的探讨超声造影时间强度曲线分析对乳腺肿瘤的诊断价值。方法49例乳腺肿块患者（22例良性，27例恶性），选用声诺维（SonoVue）作为超声造影剂，观察造影后血流增强程度并用软件进行时间强度曲线分析。结果超声造影后恶性组血流信号高增强例数明显高于良性组，差异有显著性意义（P〈0．05）。乳腺良恶性肿块时间强度曲线形态及参数存在差异。恶性组到达时间、达峰时间均短于良性组（P〈0．05），恶性组的上升支斜率、峰值强度均大于良性组（P〈0．05）。结论超声造影时间强度曲线分析有助于鉴别乳腺良恶性肿瘤。     

睾丸附睾肿块超声造影表现及定量分析的初步研究

目的 探讨超声造影及时间-强度曲线对睾丸附睾肿块的诊断价值.方法 采用超声造影 剂SonoVue和时间-强度曲线定量分析26个正常睾丸(对照组)和42个睾丸和附睾肿块(病例组),并与手术病理对照.结果 42个睾丸附睾肿块中23个(54.76％)为恶性,19个(45.24％)为良性.恶性肿块的主要增强方式为均匀增强、快进快出(8.7％),均匀增强、快进慢出(65.2％),不均匀增强、快进慢出(6.1％).良性肿块的主要增强方式为:不均匀增强、快进慢出(10.5％),均匀增强、慢进慢出(10.5％),不均匀增强、慢进慢出(36.9％),无增强(42.1％).时间-强度曲线峰值强度、达峰时间及曲线下面积在恶性组、良性组及正常组同差异均有统计学意义(P＜0.05).结论 超声造影和时间-强度曲线对睾丸附睾良恶性肿块有明显鉴别诊断价值.     

乳腺恶性肿块超声造影增强特征表现与组织病理对照分析

目的探讨不同组织病理类型乳腺恶性肿块超声造影增强特征表现。方法对42例乳腺癌患者行超声造影检查,观察肿块的增强形态、强度及造影时间-强度曲线特征,并将恶性肿瘤超声造影特征与组织病理学特征进行对照分析。结果乳腺恶性肿块超声造影的特征以不均匀部分增强及整体性增强为主,并以高增强多见,肿块增强形态、强度及向周围浸润方式与不同组织病理性质有关;时间-强度曲线呈"快进慢出"或"快进快出"型,超声造影诊断乳腺癌的符合率为95%。结论乳腺恶性病灶在超声造影下呈现不同造影特征,超声造影有助于提高乳腺恶性肿瘤的诊断准确率。     

乳腺肿瘤实时灰阶超声造影与微血管密度相关性研究

目的 探讨乳腺良恶性肿瘤实时灰阶超声造影定量参数与病理微血管密度的相关性.方法 52例乳腺肿块患者(25例良性,27例恶性),采用百胜Technos DU8实时造影匹配成像技术,获取造影参数开始增强时间、达峰时间、峰值强度、增强幅度、开始～90 s曲线下面积、开始～90 s平均强度.对术后病理标本进行抗CD34因子免疫组化染色,检测肿瘤微血管密度.结果 恶性组的峰值强度、增强幅度、开始～90 s曲线下面积及开始～90 s平均强度均高于良性组(P<0.01).恶性组的病理微血管密度也显著高于良性组(P<0.001).上述造影参数与微血管密度呈显著正相关,其中以开始～90 s曲线下面积与微血管密度的相关性最佳(r=0.89,P<0.001).结论 乳腺肿瘤实时灰阶超声造影的定量参数与病理微血管密度之间存在很好的相关性,可用于活体评估乳腺肿瘤的血管生成情况.     

乳腺肿瘤实时超声造影增强方式的研究

目的研究乳腺肿慵实时超声造影的增强方式及其诊断价值．．方法对45例乳腺肿块进行常规超声及超声造影检查,将超声造影增强方式分为周闱片状型、周刚点条状型、整体均匀型及整体不均匀型,并统计有无充盈缺损,、结果乳腺肿瘤26例为恶性,19例为良性,,40例超声造影增强,5例超声造影尤增强。乳腺肿瘤恶性组周闱片状增强、整体不均匀增强的比例高于良性组．恶性组周围点条状增强、整体均匀增强的比例低于良性组,差异均有统计学意义（P〈0．05）.以周刚片状捌增强方式作为超声造影恶性指标,周围点条状型、整体均匀型增强方式作为良性指标,常规超声诊断乳腺癌敏感性为88％,特异性为71％,常规超声结合超声造影诊断乳腺癌敏感性为92％,特异性为86％。结论超声造影良恶性增强模式小同,恶性以周闹片状型为主,良性以周同点条状型、整体均匀型为主,有助于乳腺良恶性肿瘤的鉴别诊断。     

超声造影在乳腺良恶性病灶鉴别诊断中的应用

目的 观察乳腺肿块实时灰阶超声造影增强模式,探讨其在乳腺良恶性病灶鉴别诊断中的价值.方法 50个乳腺肿块,恶性病灶23个,良性病灶27个,观察其超声造影增强的增强程度、增强模式,病灶边界是否清晰、消退模式,比较良恶性病变血流灌注特征.结果 50个乳腺病灶均有不同程度增强,恶性病灶表现为3级以上明显增强17个,占73.9%,呈结节状不均匀增强16个,占69.6%,增强时边界不清晰不规则,呈放射状18个,占78.3%.良性病灶27个,增强程度为3级的占40.7%（11/27）,呈整体较均匀增强20个,占74.1%,部分增强7个,占25.9%,表现为点线状、结节状或团块状增强.良恶性病灶造影增强特点的差异有统计学意义（P〈0.05）.结论 超声造影可以动态观察乳腺病灶内微血管血流灌注,提高其良恶性的鉴别诊断能力.     

声学造影在乳腺良恶性肿块诊断中的应用价值

目的：探讨声学造影在乳腺肿块定性诊断中的应用价值。方法：对62例乳腺肿块（33例良性,29例恶性）进行声学造影检查,通过观察造影增强模式、分析时间-强度曲线参数比较乳腺良恶性肿块的差异。结果：良、恶性肿块造影增强均匀度、造影增强时间、达峰时间、斜率有显著差异（P<0.05）;峰值强度、峰值～60s平均强度及峰值～60s曲线下面积无明显差异。把肿块不均匀增强、造影剂出现时间<10s,达峰时间<20s,斜率<5作为恶性参考指标。对于乳腺肿块灰阶及彩色多普勒确诊率88.7%,结合声学造影确诊率93.6%。结论：声学造影有助于提高乳腺肿块定性的确诊率。     

实时超声造影在乳腺良恶性肿块鉴别诊断中的应用

目的观察乳腺肿块实时灰阶超声造影增强模式,探讨其在乳腺良恶性肿块鉴别诊断中的价值。方法观察分析30个乳腺肿块的超声造影增强表现,从增强程度、增强模式,增强时肿块边界是否清晰、消退模式等方面,比较研究良恶性肿块血流灌注特征。结果 30个乳腺肿块病理证实良性肿块17个,恶性肿块13个。所有乳腺肿块超声造影均有不同程度增强,其中恶性肿块多表现为3级以上明显增强(69.2%,9/13),增强时边界不清晰不规则,呈放射状(84.6%,11/13),与良性肿块相比,差异有统计学意义(P0.05)。结论实时灰阶超声造影可以动态观察乳腺肿块内微血管血流灌注,研究良恶性肿块灌注特征有助于提高乳腺良恶性肿块鉴别诊断水平。     

乳腺良恶性肿块超声造影典型模式分析及其临床价值

目的 探讨乳腺良,恶性肿块典型超声造影模式特征.方法 观察66个乳腺良、恶性肿块超声造影特征性表现,并对其进行造影时间-强度曲线分析.结果 超声造影乳腺良、恶性肿块增强均以高增强为主.良性组多呈均匀增强,边缘多平滑,而恶性组多呈不均匀增强,边缘多不光滑呈放射状增强,差异有统计学意义(P<0.05).时间-强度曲线参数分析中,乳腺恶性肿块的达峰时间、上升支及下降支斜率均大于良性肿块,差异有统计学意义(P<0.05).结论 乳腺良、恶性肿块超声造影模式均表现一定的特征性,有助于乳腺肿块良、恶性鉴别诊断.     

超声造影结合时间-强度曲线在乳腺肿块鉴别诊断中的应用

目的进一步探讨超声造影结合时间-强度曲线分析在乳腺肿块鉴别诊断中的价值。方法以病理结果为金标准,分析36个乳腺肿块的超声造影表现及时间-强度曲线。结果典型恶性肿块有其特异性的增强模式,时间-强度曲线形态与周围正常组织相差较大;而良性肿块的时间-强度曲线形态与周围正常组织相似。结论超声造影结合时间-强度曲线分析有助于乳腺肿块的鉴别诊断。     

Value of contrast-enhanced power Doppler sonography using a microbubble echo-enhancing agent in evaluation of small breast lesions

PURPOSE: The purpose of this study was to prospectively evaluate the usefulness of contrast-enhanced power Doppler sonography (PDUS) using a microbubble echo-enhancing agent in differentiating between malignant and benign small breast lesions. PATIENTS AND METHODS: Between July 1, 2000, and September 30, 2001, we performed gray-scale sonographic examination of patients in whom diagnostic sonography or screening mammography had revealed solid breast lesions measuring less than 2 cm in the largest dimension. The patients were then examined on PDUS before and after injection of a microbubble contrast agent. The sonographic findings for all 3 techniques, as well as the morphologic features of the Doppler signals for each patient before and after injection of the contrast agent on PDUS, were independently assessed. Each lesion was classified as "benign" or "malignant" on the basis of specific criteria for sonographic interpretation. A hemodynamic study was performed in which time-transit profiles of the Doppler signals on contrast-enhanced PDUS were generated using a computer-assisted program, and the results for each patient were compared with the findings of a histopathologic examination of surgical specimens. RESULTS: Thirty-six patients (35 women and 1 man) with a mean age of 43.5 years (range, 18-69 years) were evaluated. The tumors ranged from 4 to 19 mm in the largest dimension. Histopathologic examination revealed that 19 tumors were benign and 17 were malignant. For morphologic diagnosis of the malignant lesions, the sensitivity of gray-scale sonography was 100%, compared with 29% for PDUS without contrast enhancement. The specificity of gray-scale sonography was 47%, compared with 74% for PDUS without contrast enhancement. Contrast-enhanced PDUS had a sensitivity of 71% and a specificity of 58%. The diagnostic accuracy was 72% for gray-scale sonography, 53% for PDUS without contrast enhancement, and 64% for contrast-enhanced PDUS. The time-transit profiles of the hemodynamic study did not reveal a statistically significant difference in the accuracy rates of contrast-enhanced PDUS between benign and malignant breast lesions. CONCLUSIONS: Compared with PDUS without contrast enhancement, contrast-enhanced PDUS provides better visualization of the morphology of vascular Doppler signals that is characteristic of malignancy and therefore has a higher sensitivity and diagnostic accuracy, albeit a lower specificity. In differentiating between benign and malignant small breast lesions, contrast-enhanced PDUS can be helpful when used with gray-scale sonography and PDUS without contrast enhancement.     

超声造影在乳腺局灶性病变中的应用

目的探讨超声造影在乳腺肿块良、恶性病变鉴别诊断中的价值。方法应用超声造影观察48例女性乳腺肿块患者肿块内造影剂灌注特点及增强程度,并用时间一强度分析软件（ACQ）进行分析。结果良性肿块80．65％（25,31）表现为轻中度增强,ACQ曲线转折处多较圆钝,呈单向;恶性肿块88．24％（15／17）呈明显增强,ACQ曲线转折处多较锐利,呈多相。良性肿块达峰强度、增强强度、斜率低于恶性组（t=5．89、5．50、6．15,P均〈0．05）;达峰时间、增强时间、到达时间高于恶性组（t=-4．62、9．14、2．18,P均〈0．05）。结论超声造影提高了超声对乳腺良、恶性肿瘤的鉴别能力。     

应用超声造影时强曲线诊断盆腔肿块

目的探讨时强曲线在盆腔良恶性肿块诊断及鉴别诊断中的应用价值。方法对24例盆腔肿块患者术前进行超声造影检查,并进行时间-强度曲线(TIC)分析。结果24例中,良性肿块15例,恶性9例。良、恶性肿块在造影剂进入方式上差异无统计学意义(P>0.05);良性肿块以周边先增强为主,恶性肿块以中央先增强为主(P<0.01);造影后恶性肿块内造影剂信号上升斜率明显高于良性组(P=0.002),且恶性组增强时间短(15.22svs25.89s,P=0.049)、造影剂信号绝对强度增加值高(19.1,15.25,P=0.022)、相对强度增加值高(0.26vs0.23,P=0.04),差异有统计学意义(P<0.05)。良恶性肿块在始增时间、始增强度、峰值时间、峰值强度指标上无明显统计学差异。结论超声造影时间-强度曲线分析在盆腔良恶性肿块诊断与鉴别诊断中有较高的应用价值。     

Contrast-enhanced sonography helps in discrimination of benign from malignant adnexal masses.

OBJECTIVE: To investigate the potential efficacy of real-time contrast-enhanced power Doppler sonography in the differentiation of benign and malignant adnexal masses in a pilot study. METHODS: Before surgical treatment, adnexal masses were prospectively evaluated with power Doppler sonography before and after injection of a contrast agent. Real-time postinjection sequences were computerized with time-intensity analysis software to determine an enhancement curve and contrast parameters. The intraobserver and interobserver reproducibilities of these criteria were assessed on a subsample. These contrast parameters were compared between benign and malignant tumors using logistic regression. Sensitivity and specificity were used to compare contrast parameters with sonographic and Doppler variables. RESULTS: Ninety-nine women were included, for a total of 101 adnexal masses. There were 23 cases of ovarian malignancies and 78 benign adnexal lesions. Our procedure had excellent intraobserver and interobserver reproducibility, with an average intraclass correlation coefficient of 0.92. The time before enhancement and intensity ratio did not reliably differentiate between the benign and malignant masses. Washout times and areas under the curves were significantly greater in ovarian malignancies than in other benign tumors (P < .001), leading to sensitivity estimates between 96% and 100% and specificity estimates between 83 and 98%. Contrast parameters had slightly higher sensitivity and slightly lower specificity when compared with transvaginal sonographic variables of the resistive index and serum cancer antigen 125 levels. CONCLUSIONS: Contrast-enhanced power Doppler imaging may easily and precisely discriminate benign from malignant adnexal lesions. Larger studies are needed to determine the appropriate use and benefits of this new procedure.     

实时灰阶超声造影评价乳腺导管内病变血流灌注特征的初步探讨

目的分析乳腺导管内病变实时灰阶超声造影血流灌注特征,探讨良恶性病变增强的特点和差异。方法分析19例21个乳腺导管内病变的超声造影增强表现,比较研究良恶性病变血流灌注特征。结果虽然增强达峰值时恶性病变以整体增强为主(80%,4/5),良性病变以部分增强多见(68.7%,11/16),但两者间差异无统计学意义(p>0.05)。注射造影剂后62.5%的良性病变(10/16)呈点线状增强,80%的恶性病变(4/5)呈团块状增强,消退期全部良性病变均呈不均匀消退,40%的恶性病变(2/5)呈均匀消退。良恶性病变早期增强模式和消退方式间有明显差异(p<0.05)。结论实时灰阶超声造影可以动态观察乳腺导管内病变微血管血流灌注,研究良恶性病变灌注特征有助于提高此类疾病的诊断水平。     

造影时间-强度曲线分析在乳腺肿物鉴别诊断的应用

目的 探讨超声造影时间-强度曲线分析在乳腺肿物鉴别诊断的实用价值.方法 176例患者(共181个病灶)在术前1～2 d进行常规超声检查和超声造影检查.动态存贮病灶超声造影图像180 s,以备分析.运用QLAB软件的ROI功能,绘制时间-强度曲线,获得相关指标.结果 181个病灶均经病理确诊,良性病灶121个,恶性病灶60个.对时间-强度曲线的分析,良恶性肿瘤组间,病灶增强达峰差值时间Tp差异有统计学差异,病灶峰值强度,病灶峰值减半差值时间Th 的差异无统计学意义.结论 造影时间-强度曲线对于乳腺良恶性肿瘤的鉴别诊断价值有限.     

相对造影参数在乳腺良恶性病灶鉴别诊断中的价值

目的通过获取造影定量参数及计算相对造影参数评价其对乳腺病灶良恶性鉴别诊断的价值。方法对54例经病理结果证实的乳腺病灶(良性31例,恶性23例)进行超声造影检查,使用ACQ软件对病灶及病灶旁组织增强感兴趣区绘制时间-强度曲线,测定超声造影参数,并计算相对造影参数。结果以病灶周围腺体为对照,良性组时间-强度曲线多数(80.65%,25/31)为与腺体曲线接近型,或呈缓升速降型,峰值后移。恶性组时间-强度曲线多数(91.30%,21/23)呈速升缓降型,峰值前移。病灶相对开始增强时间、相对达峰时间及相对峰值强度在乳腺良恶性病灶之间比较差异均有统计学意义(P<0.05)。相对基准强度良恶性之间差异无明显统计学意义(P>0.05)。结论研究乳腺病灶的造影参数应充分重视病灶周围腺体的增强情况,计算病灶与周围腺体造影参数的差值并结合时间-强度曲线形态特点进行良恶性对比分析更有意义。