Publications by authors named "Da-Kun Zhang"

The aim of this study was to explore the value of Shear wave elastography (SWE) in evaluating vascular and nonvascular erectile dysfunction. In this study, erectile dysfunction (ED) patients enrolled (n = 114) received SWE and Doppler ultrasonography (PCDU) exams. The peak systolic velocity (PSV) and end-diastolic velocity (EDV) were used as the classification standard.

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Background: Wandering spleen is rare clinically. It is characterized by displacement of the spleen in the abdominal and pelvic cavities and can have congenital or acquired causes. Wandering spleen involves serious complications, such as spleen torsion.

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Objective: To detect the degree of oxidative stress in the process when Porphyromonas gingivalis (P. gingivalis) stimulates human vascular endothelium, And to investigate the effect of peroxisome proliferator-activated receptor(PPAR)γ on oxidative stress during this process.

Methods: Human vascular endothelial cells (HVECs) line EA.

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Objective: To investigate the diagnostic value of acoustic radiation force impulse (ARFI) imaging technology for the assessment of liver fibrosis in chronic hepatitis C (CHC) patients.

Methods: One-hundred-and-eight CHC patients were examined by real-time ultrasound elastography using the Acuson S2000 ARFI instrument (Siemens Healthcare) and underwent liver biopsy for pathohistological analysis. The correlation between liver fibrosis grades determined by the two approaches was analyzed.

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Objective: To observe whether chronic periodontitis (CP) and metabolic syndrome (MS) have synergistic effect on atherosclerosis.

Methods: Fifty-nine patients with CP from dental clinic were enrolled in this study. According to the latest definition on MS, Twenty-six patients were diagnosed as MS by physicians.

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Objective: The purpose of this study was to investigate the characteristics of focal hypoechoic tumors of fatty liver using conventional ultrasonography and contrast-enhanced ultrasonography (CEUS).

Methods: Sixty-four hypoechoic tumors of fatty liver in 52 patients were examined by both conventional ultrasonography and CEUS. Contrast pulse sequencing and a sulfur hexafluoride contrast agent were used for CEUS.

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Purpose: To investigate the vascular characteristics of focal fatty infiltration (FFI) in the liver using color Doppler sonography (CDUS) and contrast-enhanced sonography (CEUS).

Methods: We prospectively examined 25 areas of FFI of the liver in 20 patients via conventional gray-scale sonography, CDUS, and CEUS. Cadence contrast pulse sequencing and the contrast agent SonoVue were used for CEUS examination.

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Objective: The purpose of this study was to investigate whether focal fatty sparing (FFS) formation in the liver relates to aberrant blood flow.

Methods: Sixty-three FFSs of the liver in 52 patients were examined by color Doppler flow imaging and contrast-enhanced microvessel display sonography. The 63 FFSs included 16 FFSs in the porta hepatis, 14 FFSs around the gallbladder fossa, and 33 other FFSs.

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