Pulmonary hypertension may occur in the fetus in the presence of constriction of the ductus arteriosus. The feasibility of detection and quantitation of fetal ductal constriction by Doppler echocardiography was assessed in an animal preparation in which ductal constriction was created in the fetal lamb with a variable ligature causing varying degrees of fetal pulmonary hypertension (fetal pulmo...

velocity probe. Circulation 40: 603, 1969 15. Greenfield JC, Harley A, Thompson HK, Wallace AG: Pressure-flow studies in man during atrial fibrillation. J Clin Invest 47: 2411, 1968 16. Goldberg BB: Suprasternal ultrasonography. JAMA 215: 245, 1971 17. Bommer WJ, Miller LR, Mason DT, DeMaria AN: Enhancement of pulsed Doppler echocardiography in the evaluation of aortic valve disease by the deve...

Pulsed wave 2 MHz Doppler with acoustical focusing was used to obtain blood flow velocity recordings through the intact cranium in 11 patients with occlusive disease of major intracranial arteries. Increased blood flow velocities were recorded from stenoses of the carotid siphon and of the middle cerebral, anterior cerebral and basilar arteries. A clear, inverse relationship existed between ang...

3 The universal CMB 4 3.1 The reactant beam generation . . . . . . . . . . . . . . . . . . . . . . . . . 5 3.1.1 The beam specificity . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3.1.2 Continuous and pulsed supersonic beams of transient species . . . . 6 3.1.3 Reagent state-selection . . . . . . . . . . . . . . . . . . . . . . . . . 6 3.2 The product detection and characterization . . ...

Infertility is defined as the failure to conceive a desired pregnancy after 12 months of unprotected intercourse, and affects 10 percent of married couples. The causes of infertility can involve one or both partners. Causes of female infertility: • Fallopian tube factors (damage or blockage due to salpingitis, EP) • Ovulation disorders (PCOS ,Early menopause ) • Uterine factors • Intrauterine l...

A patient with rheumatic mitral valve stenosis and regurgitation presented with shortness of breath and a "noise" in her chest. Cardiac auscultation revealed an intermittent late systolic "whoop." An increase in severity of mitral valve insufficiency during the periods of "whoop" was observed by pulsed Doppler, hemodynamic tracings and left ventriculography.

AIM To define sensitive and reliable Doppler parameters for measurements in the superior mesenteric artery and mural arteries of affected bowel loops used in the assessment of Crohn disease activity. METHODS We performed cross-sectional study at a tertiary care setting in Zagreb, Croatia, between January 2001 and March 2005. We measured arterial flow in the superior mesenteric artery and affe...

The aim of this study was to define the preoperative diagnosis of thyroid follicular carcinoma by the vascular pattern and velocimetric parameters using high resolution pulsed and power Doppler ultrasonography (US). We compared the vascular pattern and the velocimetric parameters, such as peak systolic velocity (Vmax), end-diastolic velocity (Vmin), pulsatility index (PI), or resistance index (...

3 The universal CMB 4 3.1 The reactant beam generation . . . . . . . . . . . . . . . . . . . . . . . . . 5 3.1.1 The beam specificity . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3.1.2 Continuous and pulsed supersonic beams of transient species . . . . 6 3.1.3 Reagent state-selection . . . . . . . . . . . . . . . . . . . . . . . . . 6 3.2 The product detection and characterization . . ...