Publications by authors named "W I Dock"
Several studies have demonstrated the correlation of heart rate (HR) and image quality in coronary computed tomography angiography. Beta-blocker administration is critical because of its negative inotropic effect. Ivabradine is a selective HR-lowering agent that exclusively inhibits the I(f) current in sinoatrial node cells without having any effect on cardiac contractility or atrioventricular conduction.
View Article and Find Full Text PDFPurpose: In patients with testicular cancer the percent of embryonal carcinoma and lymphovascular invasion in the primary tumor have been identified as risk factors for occult metastatic disease. We reviewed differences between primary and post-chemotherapy retroperitoneal lymph node dissection in patients at high risk.
Materials And Methods: Patients who underwent retroperitoneal lymph node dissection at our institution from 1993 to 2006 were identified and the clinical charts were reviewed.
Rationale And Objectives: To objectively quantify the effects of a microbubble contrast agent to differentiate breast tumors with power doppler ultrasound and to compare these results with color doppler ultrasound (CD US).
Methods: In 47 patients a microbubble contrast agent was injected intravenously. Computer-assisted quantitative assessment of the color pixel density was performed to evaluate the increase in Doppler signals.
Purpose: To evaluate objectively the effects of a microbubble contrast agent on the color Doppler ultrasound (US) examination of breast lesions.
Materials And Methods: Forty-seven patients aged 23-71 years underwent color Doppler US before and after intravenous injection of a microbubble contrast agent. A 3-minute computer-assisted assessment of the color pixel density (CPD) was used to evaluate objectively the increase in the number of color Doppler US signals, the transit time of the microbubble bolus, and the potential additional differential diagnostic information.