Initial application of virtual touch tissue quantification in diagnosis of chronic allograft nephropathy / 中华超声影像学杂志

Objective To investigate the feasibility of virtual touch tissue quantification(VTQ) for the assessment of chronic allograft nephropathy(CAN).Methods 48 patients with normal renal function and 50 patients with CAN were checked by color Doppler and VTQ technique.All the results were compared　between two groups.Results Mean VTQ-values were significantly different between the two groups( P ＜ 0.05).ROC curve displayed that VTQ value of 2.51 m/s could be used to diagnose CAN,the sensitivity,specificity,positive predictive value and negative predictive value were 76.0％,52.1％,60.3％ and 65.7％,respectively.The diagnostic efficiency was 62.2％.Conclusions Parenchymal stiffness measured by VTQ is stable and repeatable,which can be used to diagnose patients with CAN and to monitor renal function.

Application of conventional ultrasound and contrast-enhanced ultrasonography in comparison of the two different artery remodling techniques for kidney transplantation / 中华超声影像学杂志

ObjectiveTo assess long-term effect of two different types of arterial reanastomoses for kidney transplantation [an end-to-side anastomoses (ESA) of renal artery to external iliac artery and an endto-end anastomoses (EEA) of renal artery to internal iliac artery] by comparing conventional ultrasound and contrast-enhanced ultrasonography(CEUS) after five years of renal transplantation.MethodsSixty patients underwent kidney transplatation were included and divided into EEA group or ESA group based on the type of anastomoses. Data of renal blood flow perfusion,hemodynamic parameters,and renal anatomical structure were collected and analyzed in each groups using CEUS,color Doppler flow imaging(CDFI) and B-mode ultrasound.ResultsThe patients of the two arterial reanastomoses had no significantly difference in B-mode ultrasound and CDFI. The ESA patients had a slightly better perfusion than the EEA ones in parameters of CEUS.Conclusions Transplant tissue perfusion imaging was performed by CEUS. The perfusion of ESA grafts was slightly better than that of EEA.

Evaluation of blood flow perfusion of different function transplanted kidney with conventional ultrasound and CEUS / 中国医学影像技术

Objective To compare blood flow perfusion conditions of renal allograft of different renal function with conventional ultrasound and contrast enhanced ultrasonography (CEUS). Methods Sixty patients underwent kidney transplatation were divided into normal group (SCr≤110 μmol/L) and abnormal group (SCr＞110 μmol/L). Renal structure and inner diameter of renal artery were messured with two-dimensional ultrasound. The hemodynamic parameters (PSV, EDV and RI) were messured with CDFI. Data of renal blood flow perfusion (AT, TTP, △I and Increase), data of renal blood flow perfusion (AT, TTP, △I and Increase) were quantitatively analyzed with CEUS combined with time intensity curve. All the data were compared between two groups.Results There was no significantly difference of above indexes for B-mode ultrasound and CDFI between two groups, except EDV of arcuate arteries. CEUS parameters of patients with normal renal function were better than those with abnormal function.Conclusion Microcirculation perfusion changes of transplanted kidney with abnormal function could be detected with CEUS. The quantitative indexes of transplanted kidney with normal function were better than those with abnormal function.

Diagnostic efficacy of contrast-enhanced ultrasonography in solid renal parenchymal lesions with maximum diameters of 5 cm.

OBJECTIVE: The purpose of this study was to evaluate the diagnostic efficacy of contrast-enhanced ultrasonography (CEUS) using a sulfur hexafluoride contrast agent and the cadence contrast pulse sequencing mode in differentiating solid renal parenchymal lesions (SRPLs) with a maximum diameter of 5 cm. METHODS: Seventy-one patients with 72 SRPLs with a maximum diameter of 5 cm underwent conventional ultrasonographic and CEUS examinations in our department. The final diagnoses were 44 renal cell carcinomas (RCCs; confirmed by pathologic examination), 24 renal angiomyolipomas (4 by pathologic examination and 20 by computed tomography, magnetic resonance imaging, and follow-up studies), 1 oncocytoma (by pathologic examination), 2 hypertrophied columns of Bertin, and 1 renal abscess (both by computed tomography, magnetic resonance imaging, and follow-up studies). Three observers who were blinded to other results and the final diagnoses reviewed the conventional ultrasonographic and CEUS images. RESULTS: Hyperenhancement in the late phase (30-90 seconds after agent injection) was the most important finding for predicting SRPLs with a maximum diameter of 5 cm to be RCCs. With this criterion, the specificity and sensitivity for diagnosing solid RCCs (

Color Doppler ultrasound in the assessment of the retinal detachment / 中国基层医药

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.

Color Doppler ultrasound in the assessment of the breast mass / 中国基层医药

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.