目的:探讨乳腺良恶性肿块二维超声图像和彩色多普勒血流状况,提高乳腺肿块的超声诊断符合率。方法:回顾性分析105例乳腺肿块的二维及彩色多普勒超声图像特点。结果:本组恶性肿块37例,超声诊断和疑诊恶性肿块32例,符合率为865%(32/37);良性肿块68例,超声诊断良性肿块58例,符合率为853%(58/68)。乳腺良恶性肿块在形态、 边界、 包膜、 内部回声、 后方回声、 沙粒样钙化、血流形态分布,血流动力学等方面具有明显差异。结论:二维及彩色多普勒超声对良恶性乳腺肿块有较高鉴别诊断价值。
ObjectiveTo evaluate the ultrasonic pre locating internal jugular venous cannulation in infants, comparison with the external landmark technique.MethodsSixty two infants scheduled for cardiac surgery were randomized prospectively into two groups. In the anatomic landmarks group( n =30), the patient’s internal jugular vein(IJV) were cannulated by using the traditional method of palpation of carotid pulsation and identification of other anatomic landmarks. In the ultrasonic pre locating group ( n =32), an two dimensional ultrasound scanner image made for locating the puncture site of vessels was used with an operative probe of HP SONOS 4500 system. The number of attempts, success rate, and incidence of complications were compared for two groups.ResultsThe success rate was 100% vs 80% in the ultrasonic pre locating group vs anatomic landmarks group, with a 3.1% vs 26 7% incidence of carotid artery punctures and the number of attempts 1.57±1.04 vs 2.55±1.76. All differences were statistically significant ( P lt;0.05,0.05,0.01). Conclusion Ultrasonographic pre-localization of the IJV is superior to the anatomic landmarks technique in terms of overall success , and decreases incidence of carotid artery puncture.
ObjectiveTo systematically review the effectiveness and safety of anatomic landmarks positioning method (ALM) and real-time two-dimensional ultrasound (RTUS) guidance in the internal jugular vein cannulation. MethodsWe searched PubMed, EMbase, Web of Knowledge, CBM, WanFang Data and CNKI for randomized controlled trials (RCTs) concerning the effectiveness and safety of ALM and RTUS in the internal jugular vein catheterization up to May 1st, 2014. According to the inclusion and exclusion criteria, two reviewers independently screened literature, extracted data, and assess methodological quality of included studies. Then meta-analysis was performed using RevMan 5.3 software. ResultsA total of 10 RCTs involving 1 973 cases were included in the metaanalysis. The results of meta-analysis showed that, compared with the ALM method, the RTUS method reduced puncture failure rate (OR=0.08, 95%CI 0.05 to 0.15, P<0.000 01). For safety, compared with the ALM method, the RTUS method was significantly lower in arterial injury rate (peto-OR=0.22, 95%CI 0.14 to 0.37, P<0.000 01), and the incidence of pneumothorax (peto-OR=0.13, 95%CI 0.04 to 0.40, P=0.000 3). ConclusionCompared to the ALM method, the RTUS method has characteristics such as causing fewer traumas, and having higher success rate and fewer complications. Due to limited quantity and quality of the included studies, the above conclusion still needs to be verified by conducting more studies.
Objective To explore the value of three-dimensional contrast-enhanced ultrasound angiography in the differential diagnosis of breast masses. Methods A total of 120 patients with breast masses who were treated in our hospital from July 2013 to February 2016 were selected as the research objects retrospectively, including 70 patients of benign tumor (benign group) and 50 patients of malignant tumor (malignant group) that confirmed by surgery and pathology. All patients were given conventional two-dimensional ultrasound and three-dimensional contrast-enhanced ultrasound angiography during the diagnosis. Compared the imaging features of benign group and malignant group, and compared the diagnostic value of two-dimensional ultrasound and three-dimensional contrast-enhanced ultrasound angiography for breast masses. Results Compared with benign group, the rates of irregular masses, unclear boundary, inhomogeneous echo, lateral shadowing, echo attenuation, and micro calcification in the malignant group were all higher (P<0.05). The three-dimensional contrast-enhanced ultrasound angiography scores in malignant group and benign group were significantly different with each other (P<0.05), the score of the malignant group was higher than that of benign group. The 2- and 3-score was common in benign group, but 4- and 5-score was common in malignant group. The diagnostic sensitivity of two-dimensional ultrasound and three-dimensional contrast-enhanced ultrasound angiography for breast masses were 97.1% (68/70) and 98.6% (69/70) respectively, and the specificity were 80.0% (40/50) and 96.0% (48/50) respectively, the specificity of three-dimensional contrast-enhanced ultrasound angiography was significantly higher than that of two-dimensional ultrasound (P<0.05). Conclusion Two-dimensional ultrasound and three-dimensional contrast-enhanced ultrasound angiography both have a certain diagnostic value in the differential diagnosis of breast masses, but the three dimensional contrast-enhanced ultrasound angiography can get more information through assessment of richness of the microvascular in tumor tissue, so as to improve the diagnostic specificity and is worthy of popularization and application.
ObjectiveTo systematically review the diagnostic value of automatic breast volume scanner (ABVS) and handheld ultrasound (HHUS) for benign and malignant breast lesions.MethodsPubMed, EMbase, Web of Science, Biosis Preview, The Cochrane Library, WanFang Data, CNKI, VIP and SinoMed databases were electronically searched to collect studies on HHUS versus ABVS for benign and malignant breast lesions from inception to May 31st, 2019. Two reviewers independently screened literature, extracted data and assessed the risk of bias of included studies, and then, meta-analysis was performed by using Meta-Disc software.ResultsA total of 24 studies were included. The pooled sensitivity, specificity, positive likelihood ratio, negative likelihood ratio and diagnostic odds ratio for HHUS were 0.83 (95%CI 0.82 to 0.85), 0.81 (95%CI 0.79 to 0.82), 19.71 (95%CI 14.93 to 26.01), 4.05 (95%CI 3.49 to 4.69), 0.22 (95%CI 0.18 to 0.26), and for ABVS were 0.90 (95%CI 0.89 to 0.92), 0.88 (95%CI 0.87 to 0.89), 76.86(95%CI 55.13 to 107.17), 7.40 (95%CI 6.07 to 9.04), 0.11 (95%CI 0.09 to 0.14), respectively. The areas under the summary receiver operating characteristic curves in the differentiation of benign and malignant breast lesions were 0.88 and 0.96 for ABVS and HHUS, respectively.ConclusionThe current evidence shows that ABVS has higher value than HHUS in the diagnosis of benign and malignant breast tumor. Due to limited quality and quantity of the included studies, more high quality studies are needed to verify above conclusion.
Objective To explore the clinical value of shear wave elastography in the evaluation of quadriceps femoris lesions in patients with chronic obstructive pulmonary disease (COPD). Methods Fifty-eight COPD patients who were admitted to Chengdu First People’s Hospital and 55 healthy controls were included in the study between August 2021 and February 2022. The thickness, circumference, cross-sectional area and Young's modulus of quadriceps femoris in all subjects were measured using shear wave elastography combined with conventional two-dimensional ultrasound. The differences in ultrasound parameters between the two groups were compared, and the correlation between each ultrasound parameter and clinical evaluation indicators (modified British Medical Research Council Scale, COPD Assessment Test, six-minute walk test, and five-time sit-to-stand test) was analyzed. Results Young’s modulus values of the quadriceps femoris muscle were smaller in the COPD group than those in the healthy control group [COPD Group: rectus femoris 6.72 (6.22, 7.36) kPa, vastus medialis 6.25 (5.82, 6.79) kPa, vastus lateralis 6.94 (6.17, 7.48) kPa; healthy control group: rectus femoris 11.40 (10.23, 12.11) kPa, vastus medialis 10.77 (9.62, 11.42) kPa, vastus lateralis 11.14 (10.42, 12.52) kPa]. The differences were statistically significant (all P<0.05). The Young's modulus value of the rectus femoris muscle correlates with the aforementioned clinical evaluation indicators, with positive correlation with six-minute walk distance and negative correlation with COPD Assessment Test, modified British Medical Research Council Scale, five-time sit-to-stand time (P<0.05). Quadriceps thickness, circumference, and cross-sectional area measured by conventional two-dimensional ultrasound were not significantly different between the two groups, nor were there significant correlations between each parameter and clinical parameters (P>0.05). In addition, shear wave elastography has good reproducibility in the measurement of Young's modulus in quadriceps. Conclusions Shear wave elastography can identify quadriceps lesions earlier than conventional two-dimensional ultrasound in COPD patients, and there is a significant correlation between its measurements and the clinical condition of COPD patients. Shear wave elastography may provide a simple and noninvasive method for clinical evaluation of quadriceps femoris lesions in COPD patients.