Diagnostic Value Of Color Doppler Research Articles

The diagnostic value of color Doppler ultrasound for breast tuberculosis

Objective To explore the diagnostic value of color Doppler ultrasound for breast tuberculosis . Methods 70 cases were found breast tumor for various reasons .The direct method of scanning application of 7.5 ~10MHz high frequency color Doppler , simultaneous detection of axillary lymph node size and acoustic imaging . Results The ultrasonic diagnosis of 70 cases of breast mass with an accuracy of 97.14%,for diagnosis of tuberculo-sis of the breast,the accurate rate was 100.00%.Conclusion High frequency ultrasonography and color Doppler flow imaging in diagnosis of breast mass has high accuracy ,good effect ,it is one of the best method to check currently . Key words: Breast diseases; Ultrasonography,Doppler,color; Diagnosis,differential

Color Doppler Twinkling Artifacts from Gallbladder Adenomyomatosis with 1.8 MHz and 4.0 MHz Color Doppler Frequencies

The purpose of this study was to investigate the diagnostic value of color Doppler twinkling artifacts (CDTAs) in the evaluation of gallbladder adenomyomatosis with differently colored Doppler frequencies. An ultrasound was performed by an experienced radiologist in 17 patients with typical gallbladder adenomyomatosis. Two abdominal radiologists retrospectively evaluated the anatomic locations, the intensity of 69 CDTAs on 1.8 MHz and 4.0 MHz Doppler frequencies, and the intensity of the corresponding comet-tail artifacts. Statistical analysis was performed using the Friedman and Kruskal-Wallis test. The intensity of the CDTAs was significantly greater than that of the comet-tail artifacts, regardless of the color Doppler frequency and anatomic location (p < 0.001). The intensity of the CDTAs on 1.8 MHz was significantly higher than that on 4.0 MHz color Doppler frequency (p < 0.05). In conclusion, CDTAs may be useful in recognizing gallbladder adenomyomatosis, and 1.8 MHz color Doppler frequency is more highly recommended than 4.0 MHz for the visualization of CDTAs.

Diagnostic value of color doppler ultrasound in hemorrhagic ovarian cysts

目的 研究出血性卵巢囊肿的超声声像图特征.方法 对113例超声检查怀疑出血性卵巢囊肿的患者进行每隔1～2周的超声复查,直至肿块消失,对随访3个月后肿块未见缩小者行手术治疗.结果 104例肿块因在随访过程中自然消失而诊断为出血性卵巢囊肿,囊肿平均最大直径(5.12±1.33)cm,平均消退时间(3.5±2.4)周.9例因随访过程中肿块未见消失而经手术病理证实为赘生性卵巢囊肿.出血性卵巢囊肿的超声声像图有4种类型:Ⅰ型(团状强叫声型)21例(20.2%);Ⅱ型(混合型)25例(24.0%);Ⅲ型(海绵状回声型)30例(28.8%);Ⅳ型(囊性回声型)28例(27.0%),彩色多普勒显示41例(39.4%)肿块周围出现高速低阻的环状血流,肿块实质回声末见血流.结论 出血性卵巢囊肿具有特征性的超声和临床表现,有助于与卵巢肿瘤相鉴别,避免不必要的手术。

Color Doppler ultrasound in the assessment of the retinal detachment

Objective The aim of the study was to determine the diagnostic value of color Doppler ultrasound in the assessment of the retinal detachment. Methods The changes of ultrasonograph of the retinal detachment were retrospectively observed in 35 cases of 31 opei-ation proven retinal detachment patients. Results Color Doppler ultrasound had an accuracy of 97.1% (34/35) for diagnosing retinal detachment. In 33 cases of retinal detachment, the results of color Doppler flow imaging(CDFI) showed the color blood-flow signal in the vitreous membrane echo,extending with central retinal artery and vein. Conclusion For the color blood-flow signal in the vitreous membrane echo by CDFI ,extending with central retinal artery and vein, has a specificity of diagnostic value for retinal detachment, and the color Doppler ultrasound has a high accuracy for diagnosing retinal detachment. Key words: Retinal detachment; Ultrasongraphy, Doppler, color

Color Doppler ultrasound in the assessment of the breast mass

Objective The aim of the study was to determine the diagnostic value of color Doppler ultrasound in the assessment of the breast mass.Methods The results of ultrasonograph of the breast mass were retrospectively observed in 79 operation and pathological proven breast mass parients,in which 47 patients had proven malignant breast mass and 32 patients had proven benign malignant breast mass.Results Color Doppler ultrasound had a sensitivity of 100%for diagnosing breast mass,accuracy of 93.7%(30/32)and 91.4%(43/47)for diagnosing malignant and benign mass.Conclusion Color Doppler ultrasound has high diagnostie value in distinguishing malignant from benign mass. Key words: Breast mass; Color Doppler ultrasound

Application of ultrasonic examination by color Doppler's method in portal vein disease

目的 探讨彩色多普勒对门静脉疾病的诊断价值.方法将28例门静脉疾病患者行彩色多普勒超声检查并行手术及造影证实.结果 28例中确诊17例为门静脉血栓,5例为门静脉内癌栓,1例胰腺炎,2例假性胰腺囊肿,2例为先天性门静脉发育畸形,1例门静脉血管癌.结论彩色多普勒能确诊门静脉疾患。

Color Doppler sonographically guided transthoracic needle aspiration of lung and mediastinal masses.

This study investigated the diagnostic value of color Doppler sonographically guided transthoracic needle aspiration in lung and mediastinal masses. B-mode and colorDoppler sonographic images were obtained in 48 patients with mediastinal or peripheral pulmonary tumors. Color Doppler sonography was used to show the vascular structures before the transthoracic needle aspiration procedure. It was also used to locate the needle tip during the procedure by showing the twinkling sign. This maneuver was performed with motion of the inner stylet. Pathologic and microbiological examination of the aspirates was made. Vascular structures were detected in 37 cases on color Doppler images and in 10 cases on B-mode images. Similarly, the needle tip was observed in 39 cases on color Doppler images but in only 9 cases on B-mode images. No complications were observed except partial pneumothorax in 2 cases. The method had sensitivity of 90.0%, specificity of 87.5%, a positive predictive value of 97.2%, a negative predictive value of 63.6%, and diagnostic accuracy of 89.6%. Color Doppler sonographically guided transthoracic needle aspiration is a safe diagnostic method in malignant lung tumors, especially peripheral tumors, because of its ability to differentiate vascular structures within a tumor before the transthoracic needle aspiration procedure. It provides additional information about the location of the needle tip.

Three-dimensional color Doppler flow reconstruction and its clinical applications.

The visualization and quantification of intracardiac blood flow have always been a challenging task for the cardiologist. The advent of color Doppler flow imaging substantially enhanced the clinical diagnosis of heart valve disease. Three-dimensional (3-D) color Doppler, a new diagnostic procedure, refines the diagnostic value of color Doppler by providing unique spatial and temporal information about the actual extension, direction, origin, and size of intracardiac flows. Here, we describe the procedure for 3-D color Doppler reconstruction of intracardiac blood flow velocities and reveal the varied findings in different heart pathologies that cause blood flow disturbances. An automated procedure for the segmentation of turbulent and laminar flows, which allows for the measurement of mitral regurgitant jet volumes, is one of the first 3-D quantitative approaches to the clinical assessment of mitral valve regurgitation. The major technical advances of this procedure include the direct use of digital color Doppler velocity data and an automatic voxel count of the turbulent jet flows. Three-dimensional color Doppler not only can disclose the spatial complex geometry of intracardiac blood flow disturbances but also can quantitatively assess the severity of mitral valve regurgitation.