Measurements Of Cerebral Blood Flow in Postasphyxiated Newborns by Color Doppler Imaging（CDI）

Cerebral blood flow of 10 asphyxiated term newborns was continuously measured during the first 7 days of life and compared with that of 10 normal term infants by CDI. Frequency spectrum and blood flow variables in the anterior, middle and posterior cerebral arteries were studied. The results showed evidently lower systolic amplitude in patients than that in normal subjects. End diastolic amplitude was zero in part of vessels, and values of bloed flow variables were all lower in day 1 of the life as compared with the control groups. Frequency spectrum recovered to normal patterns in 9 survived infants in day 2. but blood flow variables recovered to normal by day 7. Values of resistance index (RI) rose to 1 in some vessels of moderate hypoxic ischemic encephalopathy (HIE) infants and stayed at 1 in the severe HIE infants. It is concluded that low CBF plays a key role in brain damage of post-asphyxiated newborns and RI may be an important parameter in the evaluation prognosis.

FEASIBILITY STUDY OF AN ULTRASOUND CONTRAST AGENT(LEVOVIST) IN COLOR DOPPLER IMAGING OF LIVER NEOPLASMS

The purpose of this study was to determine the efficacy of using an ultrasound contrast agent(levovist)to enhance the color Doppler imaging of liver neoplasms.Thirty patients with hepatic tumors were enrolled in this study.After intravenous administration of levovist,the color Doppler signals of normal hepatic vessels were enhanced.In various hepatic tumors,the different patterns of tumor vascularity were observed,which had not been demonstrated in conventional non contrast color Doppler imaging.In 11 of 16 patients with hepatocarcinoma,additional color Doppler signals were observed in the central part of the tumors.On the contrary,3 patients with metastatic liver lesions the enhanced color Doppler signals appear only at the peripheral of tumors.A typical rim like color enhancement was seen in 2 of the 3 cases.In six patients with hepatic hemangiomas contrast enhanced color Doppler imaging demonstrated the blood vessels at the margin of the neoplasms.Contrast enhanced color Doppler imaging improves the visualization of the hepatic neoplasm vascularity.This technique holds great promise for detecting small liver tumors and differentiating hepatic neoplasms.

The Study of Ovarian Artery Hemodynamics in Patients with Infertility by Color Doppler Energy

Seventy four cases of infertility were examined to study the hemodynamics of the bilateral ovarian arteries at 21st day during the corpus luteum phase by color Doppler energy(CDE) and color Doppler flow imaging (CDFI). All the patients were verified by laparoscopy, fallopian tube patency examination and ovarian function test. Twenty two healthy women served as controls. The results showed that the difference of resistance index(RI)and pulsatility index (PI) of bilateral ovarian arteries between the infertility and the normal controls had statistical significance ( P <0.01), and the PI showed negative correlation with the thickness of endometrium (left side: r =0.724, P <0.01; right side: r =0.756, P <0.01). The results also showed that CDE was more sensitive than CDFI in displaying the ovarian arteries. It could be concluded that the elevated resistance of ovarian artery during the corpus luteum phase was one of the important factors that resulted in infertility.

Real-time Three-Dimensional Color Doppler Flow Imaging： An Improved Technique for Quantitative Analysis of Aortic Regurgitation

The recently introduced real-time three-dimensional color Doppler flow imaging （RT-3D CDFI） technique provides a quick and accurate calculation of regurgitant jet volume （RJV） and fraction. In order to evaluate RT-3D CDFI in the noninvasive assessment of aortic RJV and regurgitant jet fraction （RJF） in patients with isolated aortic regurgitation, real-time three-dimensional echocardiographic studies were performed on 23 patients with isolated aortic regurgitation to obtain LV end-diastolic volumes （LVEDV）, end-systolic volumes （LVESV） and RJV, and then RJF could be calculated. The regurgitant volume （RV） and regurgitant fraction （RF） calculated by two-dimensional pulsed Doppler （2D-PD） method served as reference values. The results showed that aortic RJV measured by the RT-3D CDFI method showed a good correlation with the 2D-PD measurements （r= 0.93, Y=0.89X＋ 3.9, SEE= 8.6 mL, P〈0.001 ）; the mean （SD） difference between the two methods was - 1.5 （9.8） mL. % RJF estimated by the RT-3D CDFI method was also correlated well with the values obtained by the 2D-PD method （r=0.88, Y=0.71X＋ 14.8, SEE= 6.4 %, P〈0. 001）; the mean （SD） difference between the two methods was -1.2 （7.9） %. It was suggested that the newly developed RT-3D CDFI technique was feasible in the majority of patients. In patients with eccentric aortic regurgitation, this new modality provides additional information to that obtained from the two-dimensional examination, which overcomes the inherent limitations of two-dimensional echocardiography by depicting the full extent of the jet trajectory. In addition, the RT-3D CDFI method is quick and accurate in calculating RJV and RJF.

Hemodynamic Changes on Color Doppler Flow Imaging and Intravenous Contrast-enhanced Ultrasound for Assessing Transplanted Liver and Early Diagnosis of Complications

The value of color Doppler flow imaging （CDFI） and intravenous contrast-enhanced ultrasound （CEUS） for assessing the transplanted liver and early diagnosing complications by examining hemodynamic changes was discussed. Seventy-five patients with orthotopic liver transplantation （OLT） underwent CDFI. The following parameters were measured： peak systolic velocity （PS）, resistance index （RI） and Doppler perfusion index （DPI） of the hepatic artery （HA）, time average velocity （TAV） of portal vein （PV） and velocity of hepatic vein （HV） in different stages postoperation, And 11 patients of them received CEUS. Thirty healthy subjects were enrolled as controls, The results showed that： （1） In 23 patients without obvious complications, TAV of PV within 15 days post-operation was significantly higher than in controls （P〈0.05）, PS and DPI of HA within 7 days postoperation were lower, but RI was higher than in controls （P〈0.05）; （2） When the hepatic artery thrombosis （HAT） occurred, PS and DPI of HA were obviously decreased, but TAV of PV significantly increased like a high saw-tooth wave; （3） While rejection occurred, both TAV of PV and PS of HA were decreased with the increase in RI of HA, and the triphasic wave of HV disappeared and displayed as saw-tooth wave; （4） The incidence of biliary complications in liver transplantation was increased when DPI was reduced; （5） Seven cases of hepatic carcinoma relapse after OLT demonstrated hyperecho in the arterial phase and hypoecho in the portal and later phase on CEUS; （6） In 2 cases of HA thrombus, there was no visualized enhancement in arterial phase of CEUS, but enhancement during the portal vein and parenchymal phase. It was concluded that the hemodynamic changes of PV, HA and HV in the transplanted liver are valuable for assessing the transplanted liver and early diagnosing complications on CDFI and CEUS.

CHARACTERISTICS OF TWO－DIMENSIONAL AND COLOR DOPPLER ULTRASONOGRAPHY IN GRAVES＇DISEASE

Color Doppler flow imaging(CDFI) was performed in 24 patients with Graves' disease and the results were compared with those from 8 patients with Hashimoto's disease, 6 patients with simple diffuse goiter, and 15 normal volunteers. All cases were confirmed by clinical, laboratory tests or pathology. CDFI of Graves' disease showed diffuse or localized hypoechoes within the thyroid glands, rich flow signals in the hypoechoes, accelerated flow velocity, and decreased resistance in the superior thyroid arteries(STA) and arteries within the glands. These appearances were characteristic as compared with the controls. The rate of flow in STA of Graves' disease patients was 8 to 10 times higher than that in the normal volunteers. This study demonstrates that CDFI is convenient and efficient as compared with isotope scan and some other laboratory tests, and can be widely used in the diagnosis of Graves' disase.

Color Doppler Imaging in the Diagnosis and Follow-up of Carotid Cavernous Sinus Fistulas

This report describes color doppler imaging (CDI) in theevaluation and follow-up of nine patients with carotid cavernous sinusfistulas.The orbits and carotid arteries were examined with CDI.In allcases,the diagnosis was confirmed by angiography.CDI clearlydemonstrated the dilated superior ophthalmic veins (SOVs) with retrogradeflow and low resistance arterial doppler waveform in all nine patients (10eyes).After the study of quantitative hemodynamics,we found that directcarotid cavernous sinus fistulas s...

Value of Acceleration Flow in the Left Anterior Descending Coronary Artery for the Detection of Coronary Artery Stenosis by Transthoracic Coronary Color Doppler Echocardiography

Summary： Whether the localized flow acceleration occurs in the resting stenotie left anterior descending coronary artery was explored and its value for detection of coronary stenosis estimated. Blood flow in the left anterior descending coronary arteries in 45 patients was detected by transthoratio color Doppler echocardiograph and multipoint pulse Doppler spectrums were recorded in the same segment. The ratio of the maximal peak diastolic velocity to the minimal peak diastolic velocity was calculated. The ratio ≥1.5 was the cutoff value for the presence of localized acceleration flow. There were 23 patients with localized acceleration flow examined by eehoeardiography. Twenty of them were found to have luminal diameter stenosis （60%-98%） in the left anterior descending coronary arteries by coronary angiography and 3 patients were normal. There were 22 patients without localized acceleration flow examined by eehoeardiography. Eighteen of them had no or %60 stenosis. Four patients had serious stenosis （≥95%） or occluded segments in the left anterior descending coronary arteries on coronary angiography. The ratio of the maximal peak diastolic velocity to the minimal peak diastolic velocity was significantly higher in patients with left anterior descending coronary artery stenosis than that in those without stenosis （1.9±0.3 vs 1.3±0.2, P〈0.01） and it correlated significantly with left anterior descending coronary artery stenosis （r=0.77, P〈0.01）. The specificity by using the ratio≥1. 5 for stenosis detection was 85.7% （18/ 21）, and the sensitivity was 83.3% （20/24）. This study demonstrated that local blood flow velocity was increased in the resting stenotie left anterior descending coronary artery. Transthoraeie color Doppler eehoeardiography is a reliable noninvasive method to detect localized acceleration flow in the left anterior descending coronary artery stenosis and it is useful in the noninvasive diagnosis of stenosis in the left anterior descending coronary artery.

Role of color Doppler flow imaging in applicable anatomy of spleen vessels

AIM： To explore the role of color Doppler flow imaging （CDFI） in visualization of spleen vessels and to define its value for spleen micro-invasive operation. METHODS： A total of 36 patients requiring laparoscopic splenectomy （LS） for various hematopathies and autoimmune diseases were randomly selected from April 2005 to May 2008. Anatomic types of spleen pedicle, adjacent relations between spleen vessels and pancreas, diameters of spleen artery and vein were detected and recorded by preoperative CDFI. Different operative procedures were performed according to different anatomic frameworks. The parameters were recorded by telerecording during LS and compared with those by preoperative CDFI using Chi-square test. RESULTS： Two anatomic types of spleen pedicle and four different adjacent relations between spleen vessels and pancreas were detected by CDFI. The diameters of spleen artery and vein detected by CDFI were 0.46 ± 0.09 cm and 0.85 ± 0.35 cm, respectively. There was no statistical difference between the parameters recorded by CDFI and by telerecording （X^2 = 0.250, 0.677, P 〉 0.05）. LS was successfully performed following the anatomic information provided by preoperative CDFI.CONCLUSION： Different anatomic frameworks of spleen vessels can be provided by preoperative CDFI, which instructs micro-invasive operation of spleen and increase the safety of operation.

PRELIMINARY APPLICATION OF COLOR DOPPLER FLOW IMAGING IN THE LOCALIZATION OF PARATHYROID ADENOMAS

From December 1991 to April 1993, we performed color Doppler flow imaging (CDFI) in 11 patients with parathyroid adenoma, and all cases were confirmed by operation and pathology. In all the parathyroid adenomas,vessels were clearly revealed at the periphery of the upper pole and/or anterior periphery, where arterial signals were elicited. These arteries had branches into the adenomas and originated from inferior thyroid arteries on the same side in most cases. The internal flow signals were increased markedly as compared to normal thyroid, and high-velocity arterial signals were detected. Because of the thyroid' s rich blood supply and landmark peripheral vessels, CDFI can distinguish parathyroid foci from thyroid nodules, lymph nodes, and normal tissues and provide a sound basis for the diagnosis of small parathyroid foci.

Left Coronary Artery Fistula Identified by Color Doppler Flow Imaging

Coronary artery fistula (CAF) is an abnormal communication between a coronary artery and a cardiac chamber, great vessel,or other vascular structures. The presence of the fistula is usually identified by angiography. In this paper, the diagnosis of left coronary artery-right ventricle fistula was made by color Doppler before angiography? and it was confirmed by surgery.Color Doppler flow imaging is a noninvasive method which can reveal the proximal dilatation, the course and the draining site of CAF.

Color Doppler Imaging in the Study of Retrobulbar Hemodynamic Changes of Primary Angle-closure Glaucoma

Purpose: To investigate the hemodynamic changes of ophthalmic and central retinal artery (OA,CRA) in Primary Angle-closure Glaucoma (PACG) and the effects of intraocular pressure (TOP) on the retrobulbar hemodynamics.Methods: The hemodynamic changes of OA, CRA in PACG were explored with color Doppler imaging (CDI) technique. Peak systolic blood flow velocity (PSV), end-diastolic blood flow velocity (EDV),pulsatile and resistive indices (PI,RI) were recorded and compared with those of the normal subjects. There were 20 patients (40 eyes) with PACG who were divided into two groups according to their IOP levels; ocular hypertension (15 eyes) and normal tension (25 eyes) .Results : Compared with the normal subjects, the hypertension group of PACG showed significant reduction in the EDV and increases in PI, RI of CRA; normal tension group of PACG also showed remarkable increase in RI of CRA. The ocular hypertension was significantly correlated with the RI and not with the EDV by the analysis of multiple

Thrombelastography and color Doppler flow imaging in the perioperative period after closed lower limb fracture

Objective To observe the changes of thrombelastography (TEG) and color Doppler flow imaging (CDFI) in the perioperative period after closed lower limb fracture.Methods Fasting venous blood samples in the morning from 11 healthy adults were used

彩色多普勒超声血流评分对附件扭转患者卵巢活性的预测价值

目的研究卵巢彩色多普勒血流成像(CDFI)评分预测附件扭转患者卵巢活性的价值。方法选取经手术证实的32例附件扭转患者,根据卵巢血流信号进行评分,将其与术中卵巢活性进行对比分析。结果卵巢CDFI评分推测卵巢存活的灵敏度为90%,特异度为81.82%,阳性预测值为69.23%,阴性预测值为94.74%,卵巢CDFI血流存在与手术中卵巢存活的一致性较好,Kappa值为0.664。结论CDFI能够对附件扭转者卵巢活性进行预估,卵巢血流评分可为临床提供较为可靠、有效的影像学依据。

Design of axial flaps with color Doppler flow imaging technique for repairing deep wounds of heels

To report the methods and effect of axial pattern flap on lower limb in repairing deep wounds of heels by using color Doppler flow imaging (CDFI) technique so as to solve the ever before problems that the vessel can not be displayed in designing axial flap.Methods Suitable axial flaps on lower limbs were selected according to the character of the wounds.There were 25 flaps including 10 cases of the distal-based sural neurovascular flap,nine medial sole flap and six medial leg flap.All the axial pattern flaps were designed on the basis of traditional design ways before operation;then,CDFI appliance with high resolution was used to examine the starting spot,exterior diameter,trail and length of the flap’s major artery.The flaps were redesigned according to the results of CDFI and transferred to cover the wounds.In the meantime,both the results of operation and examination were compared.Results The major artery’s starting spot,exterior diameter,trail and anatomic layers were displayed clearly,in consistency with the results of operation.The flaps survived completely and recovered well,with perfect appearance,color and arthral function.Conclusion CDFI is a simple,macroscopic and atraumatic method for designing the axial pattern flap on lower limb,can provide more scientific and accurate evidence for preoperative determination of flap transplantation and is worthy of clinical application.10 refs,4 figs,2 tabs.

二维超声联合微血管血流成像对睾丸结核的诊断价值

目的:探讨二维超声联合微血管血流成像(MV-flow)对睾丸结核的诊断价值。方法:选择2023年1月至12月在郑州大学第一附属医院因阴囊疼痛、坠胀,或伴有阴囊肿块就诊,疑似睾丸结核的91例患者为研究对象。均行二维超声检查、彩色多普勒血流显像(CDFI)和MV-flow。以病理结果为金标准,比较二维超声联合MV-flow及二维超声联合CDFI诊断睾丸结核的效能,同时计算血流像素占比。另外选取20例疑似睾丸结核患者,通过MV-flow获取血管指数(VI),采用同类相关系数(ICC)评估MV-flow检测结果的一致性。结果:91例患者中共有80例病理确诊为睾丸结核。二维超声联合MV-flow诊断睾丸结核的敏感度、特异度、准确度分别为96.3%、54.6%和91.2%,高于二维超声联合CDFI(87.5%、18.2%、79.1%)。MV-flow睾丸内血流像素占比高于CDFI[(2.13±0.81)%vs(1.86±0.70)%,P=0.360]。VI在观察者内和观察者间的一致性良好[ICC(95%CI)分别为0.874(0.683~0.950)、0.945(0.860~0.978)]。结论:相比二维超声联合CDFI,二维超声联合MV-flow对睾丸结核的诊断效能更高。

CDFI血流信号分级、抗CCP抗体、G6PI、RF对类风湿性关节炎的诊断价值

目的分析彩色多普勒血流显像(CDFI)血流信号分级、抗环瓜氨酸肽抗体(CCP)、葡萄糖6磷酸异构酶(G6PI)、类风湿因子(RF)对类风湿性关节炎(RA)的诊断价值。方法回顾性选取2022年4月至2023年10月新疆医科大学附属中医医院收治的100例RA患者纳入观察组,根据病情分为RA活动期组(n=50)和RA非活动期组(n=50);依据血流信号CDFI分级分为0~1级组(n=20)、2级组(n=17)、3级组(n=13)。选取同期本院收治的100例其他自身免疫性疾病患者纳入对照组。比较观察组、对照组一般临床资料(性别、病程、年龄、RA家族史、体重指数、吸烟史、饮酒史、居住地、职业等),比较不同活动期患者抗CCP抗体、G6PI及RF水平;比较不同血流信号分级组患者抗CCP抗体、G6PI及RF水平;采用受试者工作特征(ROC)曲线评估CDFI血流信号分级、抗CCP抗体、G6PI、RF联合检测对RA的诊断价值。结果两组患者性别构成比、病程、年龄、RA家族史、体重指数、吸烟史、饮酒史、居住地、职业比较,差异均无统计学意义(P>0.05);观察组患者抗CCP抗体、G6PI及RF水平均高于对照组,差异均有统计学意义(P<0.05)。RA活动期组患者抗CCP抗体、G6PI及RF水平均高于RA非活动期组患者,差异均有统计学意义(P<0.05)。血流信号3级组患者抗CCP抗体、G6PI及RF水平均高于血流信号0-1级组、2级组患者,差异均有统计学意义(P<0.05)。CDFI血流信号分级、抗CCP抗体、G6PI、RF单独检测RA的敏感度分别为79.57%、86.45%、82.14%、77.89%,特异度分别为83.89%、79.28%、83.67%、84.15%,AUC分别为0.855(0.804~0.907)、0.940(905~0.976)、0.893(0.852~0.935)、0.800(0.736~0.864),CDFI血流信号分级、抗CCP抗体、G6PI、RF联合检测RA的敏感度为89.36%,特异度为77.24%,AUC为0.957(0.933~0.980)。结论RA患者血清CCP抗体、G6PI、RF水平升高,随着CDFI血流信号分级增大,升高愈加明显,CDFI血流信号分级、抗CCP抗体、G6PI、RF联合检测RA诊断价值较高,对判断RA进展具有意义。

彩色多普勒超声检查影像学特征诊断甲状腺乳头状癌颈部淋巴结转移的价值

目的:观察彩色多普勒超声检查影像学特征诊断甲状腺乳头状癌(PTC)颈部淋巴结转移的价值。方法:回顾性分析2018年1月至2022年12月该院收治的107例PTC患者的临床资料,107例PTC患者均行病理学检查、彩色多普勒超声检查,统计107例PTC患者颈部淋巴结转移情况的病理学检查结果,依据是否淋巴结转移将其分为转移组和非转移组,比较两组彩色多普勒超声检查影像学特征;采用多因素Logistic回归分析PTC患者颈部淋巴结转移的危险因素;采用Kappa一致性检验分析彩色多普勒超声检查影像学特征诊断结果与病理学检查结果的一致性。结果:病理学检查结果显示,107例PTC患者颈部淋巴结转移56例;转移组肿瘤边界不清晰、最大结节直径>10 mm、多发结节、内部微钙化、侵犯被膜等影像学特征占比均高于非转移组,差异有统计学意义(P<0.05);Logistic回归分析结果显示,最大结节直径>10 mm、内部微钙化、侵犯被膜等影像学特征均为PTC患者颈部淋巴结转移的危险因素(OR>1,P<0.05);Kappa一致性检验显示,最大结节直径>10 mm、内部微钙化、侵犯被膜三者联合诊断PTC患者颈部淋巴结转移结果与病理学检查结果的一致性(Kappa=0.524,P<0.05)高于三者单项诊断(Kappa=0.286、0.456、0.247,P<0.05)。结论:彩色多普勒超声检查影像学特征中,最大结节直径>10 mm、内部微钙化、侵犯被膜三者联合诊断PTC患者颈部淋巴结转移的价值高于三者单项诊断。

经阴道彩色多普勒超声在子宫内膜病变患者中的应用价值

目的分析经阴道彩色多普勒超声在子宫内膜病变患者中的应用价值。方法选取2021年2月至2022年4月南昌大学第四附属医院收治的88例子宫内膜病变患者作为研究对象,所有患者均接受经阴道彩色多普勒超声及病理学检查,按照病理学检查结果将患者分为息肉组与癌变组,每组44例。比较两组二维超声子宫内膜情况、病灶血流动力学情况、经阴道彩色多普勒超声血流相关参数;以病理学检查结果为金标准,分析经阴道彩色多普勒超声对子宫内膜癌变的诊断效能。结果癌变组子宫内膜厚度厚于息肉组,内膜-肌层分界清晰、病灶回声均匀占比均低于息肉组,差异有统计学意义(P<0.05);癌变组血流丰富占比高于息肉组,差异有统计学意义(P<0.05);癌变组血流阻力指数(RI)、搏动指数(PI)均低于息肉组,时间平均峰值流速(TAP)慢于息肉组,差异有统计学意义(P<0.05);经阴道彩色多普勒超声对子宫内膜癌变的诊断灵敏度为86.36%,特异度为84.09%,准确度为85.23%;诊断息肉的灵敏度为84.09%,特异度为86.36%,准确度为85.23%。结论经阴道彩色多普勒超声对子宫内膜病变的诊断准确率较高,能通过血流动力学、RI、PI、TAP及影像学表现鉴别息肉或癌变。

彩色多普勒血流成像在缺血性脑血管病患者颈动脉狭窄评估中应用价值分析

目的:探讨彩色多普勒血流成像(CDFI)在缺血性脑血管病患者颈动脉狭窄评估中的应用价值。方法:回顾性分析2021年1月—2023年11月寿光市人民医院收治的125例缺血性脑血管病患者颈动脉数字减影血管造影(DSA)及CDFI检查结果,以DSA结果为金标准分析CDFI诊断颈动脉狭窄的灵敏度、特异度、准确度、阳性预测值、阴性预测值,并用Kappa检验验证CDFI与DSA诊断颈动脉狭窄的一致性;根据DSA结果显示的颈动脉狭窄情况将患者分为颈动脉狭窄组与正常组,比较两组患者颈动脉血搏动指数(PI)、阻力指数(RI)、舒张期血流速度(EDV)、收缩期峰值流速(PSV)。结果:DSA结果显示,125例患者中74例存在颈动脉狭窄,设为颈动脉狭窄组;51患者无颈动脉狭窄,设为正常组。CDFI检查结果显示,125例患者中73例存在颈动脉狭窄,以DSA结果为金标准,CDFI诊断颈动脉狭窄的灵敏度为97.30%、特异度为98.04%、准确率为97.60%、阳性预测值为98.63%、阴性预测值为96.15%,且Kappa检验结果显示,CDFI与DSA诊断颈动脉狭窄的一致性极好(Kappa值=0.950,P<0.05)。颈动脉狭窄组患者PI、RI高于对照组,EDV、PSV低于对照组,差异有统计学意义(P<0.05)。结论:CDFI在缺血性脑血管病患者颈动脉狭窄评估中的应用价值较高,便于临床更好地对患者进行治疗,促进患者病情好转。