Clinical Value Of Color Doppler Research Articles

The clinical value of color Doppler ultrasound combined with vascular enhancement technology in the diagnosis of iliac vein compression syndrome

Objective To evaluate the clinical value of color Doppler ultrasound(CDUS) combined with vascular enhancement technology(VET) in diagnosis of iliac vein compression syndrome(IVCS). Methods From Jan 2016 to Oct 2018, 252 patients with the lower extremities chronic venous diseases(CVD) were selected in the Second Hospital of Hebei Medical University. The ipsilateral iliac veins of the affected limbs were examined by CDUS, VET and the combined diagnosis of IVCS before X-Ray venography(XRV). Iliac vein diameter stenosis ratio(DSR)>50% in transverse section was the criterion of ultrasound diagnosis of IVCS. The stenosis site of iliac vein and indirect signs of IVCS, such as presence of collateral circulation and the retrograde flow of internal iliac vein were recorded. The cases, which had the same results in CDUS, VET and both and XRV, were divided into IVCS group and non-IVCS group. The results of XRV were taken as the gold standard, the diagnostic efficiency of the above 3 methods in diagnosis of IVCS was calculated. The cases identically diagnosed by the most effective ultrasonic method and XRV were divided into DVT group and non-DVT group according to the deep vein thrombosis in lower limbs. In the non-DVT group, there were five groups of C2-C6 on the basis of the CEAP clinical grades of CVD in lower extremity. The relationship between IVCS and different CEAP clinical grades were analyzed. The locations of common iliac vein stenosis and collateral circulation formation and internal iliac vein reverse flow were evaluated for the diagnosis of the IVCS. Results ①XRV diagnosis of IVCS was used as the gold standard. Compared with CDUS and VET alone, the sensitivity and specificity of CDUS combined with VET was the highest(all P 0.05). ④For the proportion of the iliac vein stenosis sites, the prevalence of the primary section of left common iliac vein was much higher than those of the primary section of right common iliac vein and the middle-distal sections of bilateral common iliac veins(all P 0.05). ⑤In IVCS group, which had the same results of CDUS combined with VET and XRV, there were statistical differences in the positive rate of collateral circulation and the retrograde flow of internal iliac vein(χ2=6.717, P=0.010), and the former is higher than the latter. Conclusions CDUS combined with VET has a higher diagnostic efficiency for IVCS than VET or CDUS alone. The presence of IVCS is closely related to DVT of lower extremities, but not related to clinical class of CEAP. The most common site of IVCS is the initial segment of the left common iliac vein. The presence of collateral circulation can be used as indirect indicators for the diagnosis of IVCS. Key words: Ultrasonography, Doppler, color; Vascular enhancement technology; Iliac vein compression syndrome

Clinical value of color Doppler ultrasound in the diagnosis of lower extremity varicosis of great saphenous vein in patients with deep vein structure and hemodynamic status

Objective To investigate the clinical value of color Doppler ultrasound in the diagnosis of lower extremity varicosis of great saphenous vein in patients with deep vein structure and hemodynamic status. Methods 79 patients with 96 deep lower extremity varicosis were detected deep venous wall and valve echo, lumen morphology, reflux time, reflux velocity and spectrum Doppler imaging by using color Doppler ultrasound, and the results were compared with intravenous X-line angiography, while the patients with normal deep vein were selected as the control group. Results Color Doppler ultrasonography compared with angiography, the completely normal diagnostic accuracy of deep vein was 98.3%, the diagnosis accuracy of simple deep venous valve insufficiency was 91.7%, the diagnostic accuracy of sequela of deep vein thrombosis was 100.0%, the diagnosis accuracy of arteriovenous fistula was 100.0%.The sonographic appearance of 60 deep veins was similar to those of the control group.In the stripping surgery of 60 great saphenous vein, there was no postoperative lower limb swelling, review of ultrasound had no deep venous reflux phenomenon.96 suffered limbs were measured in different parts, different levels of venous reflux.The reflux time of superficial femoral vein valve was the longest, which was (5.92±1.83)s, the reflux rate was (50.28±19.48)cm/s, and the lower leg traffic vein reflux time was the shortest, which was (2.37±1.92)s, the reflux rate was (27.92±17.28)cm/s. Conclusion Color Doppler ultrasound has important clinical value for the evaluation of lower extremity varicosis of great saphenous vein in patients with deep vein structure and blood flow. Key words: Color Doppler ultrasound; Varicosis of great saphenous vein; Deep vein; Hemodynamics

Clinical study of color Doppler ultrasound for early diagnosis of acute cholecystitis infection

Objective To investigate the clinical value of color Doppler ultrasound in the early diagnosis of acute cholecystitis infection ,in order to improve the diagnosis of acute cholecystitis infection .Methods 36 cases with acute cholecystitis infection were selected as the observation group , and during the same period the healthy people were randomly selected as the control group .The color Doppler performance of ultrasound was observed .The hepatic artery blood flow velocity and the maximum peak of the cystic artery （Vmax） and resistance index（RI） were meas-ured.ROC curve was observed to evaluate the specificity of color Doppler ultrasound for the disease .Results The incidence rates of weak bile sound transmission ,gallbladder wall thickness ,gallbladder enlargement ,ultrasound Mur-phy positive in the control group were 25.0%,16.7%,22.2%,8.3%,which in the observation group were 72.2%, 47.2%,100.0%,94.4%,the differences were statistically significant （χ2 =4.571,4.571,4.589,5.689,all P 0.05）.Conclusion Color Doppler ultrasound can show the form of acute infectious cholecystitis ,gallbladder wall degree of bile through sound etc .,it can improve the diagnostic value of the disease. Key words: Cholecystitis, acute; Ultrasonography, Doppler, color; Diagnostic imaging

Application value of color Doppler ultrasound in the early diagnosis of diabetic nephropathy

Objective To investigate the clinical value of color Doppler in the early diagnosis of diabetic nephropathy （DN）.Methods 69 cases of DN Phase I,II patients （group A） and 75 cases Phase III （B group） all underwent renal artery line Doppler flow imaging inspection .Renal aorta （ MRA） ,interlobar artery （ IRA） ,renal seg-mental artery blood flow （SRA） peak systolic velocity （Vsmax）,resistance index （RI） and diastolic minimum speed （ Vdmin） and other hemodynamic parameters of two groups were analyzed .Results The Doppler spectrum renal blood flow characteristics of early renal damage were：between group A,B,the main renal artery （MRA）,the kidney arterial segment Vdmin significantly reduce ,RI was significantly higher;the interlobar artery Vsmax （t=3.562 5,P=0.000 5）,Vdmin （t=5.252,P=0.000 0） were significantly lower,RI was significantly higher （t=9.166 0,P=0.000 0）;with the severity of renal dysfunction ,kidney color flow imaging reduce ,the kidney volume was significantly reduced in patients with stage Ⅲ.Conclusion Color Doppler ultrasound can clearly show the size of the patient′s kidney and renal artery blood flow parameters ,which has certain value in the diagnosis of early DN . Key words: Diabetic nephropathies; Ultrasonography,doppler,color

Clinical value of color Doppler ultrasound in evaluation of the right ventricular systolic function of patients with hypertrophic cardiomyopathy

目的 通过应用CDE观察患者右心室面积变化率(RVPCA),以评价肥厚型心肌病(HCM)患者的右心室心肌收缩功能(RVSF).方法 采用CDE检查56例HCM患者(HCM组)及60例健康体检者(对照组)的心尖四腔心观(A4CH)、胸骨旁心底短轴观(PSAX)及左心长轴观(PLAX)三个不同切面RVPCA及其均值.结果 与对照组比较,HCM组PLAX、PSAX、A4CH的RVPCA值均降低,其中PLAX、PSAX的RVPCA值两组比较,差异均有统计学意义(t=17.552、12.473,均P＜0.05).HCM组综合RVPCA值明显低于对照组(P＜0.01).HCM组右室游离壁近房室环处心肌纵向收缩期s波波峰速度(Vs)为(10.5±4.1)cm/s,s波速度时间积分(VTIs)为(1.6±0.7)cm;对照组Vs为(13.6±3.8)cm/s,VTIs为(2.3±0.6)cm;两组Vs、VTIs比较,差异均有统计学意义(t=4.262、5.839,均P＜0.01).结论 HCM患者的右心室心肌收缩功能有一定程度减退,通过CDE对HCM患者RVSF进行评价具有可行性。

Value of color Doppler ultrasound in the examination of prethrombotic state

To explore the clinical value of color Doppler ultrasound in patients with prethrombotic state (PTS). From October 2011 to November 2012, a total of 201 patients were diagnosed with PTS. There were 95 males and 106 females with an average age of 52 years (range: 15-78). They were divided into intervention and observation groups on the basis of drug intervention. And the relevant literatures were reviewed and the images of color Doppler ultrasound before and after treatment compared. Before treatment, blood flow peak rates of common femoral, popliteal and calf intermuscular veins were (0.16 ± 0.03), (0.14 ± 0.03) and (0.13 ± 0.02) m/s; after treatment, (0.19 ± 0.03), (0.17 ± 0.03) and (0.15 ± 0.01) m/s respectively. The peak flow increased and sluggish flow decreased or disappeared in 152 PS patients. It indicated a relief or an obvious resolution of hypercoagulable state. And the symptom of lower extremity soreness was greatly relieved. Among 49 patients without drug intervention, severe full-lumen storm floating occurred in 12 cases. And 8 of them suffered deep vein thrombosis within 2 weeks. The incidence of thrombus was 66.7%. Color Doppler ultrasound may detect and assess PTS effectively so as to guide effective interventions.