Sonographic correlate of stationary waves.

Stationary waves are a rare and inconsistent angiographic finding that has been attributed to various causes, including angiographic artifact. We present 2 cases of patients with arterial occlusion in whom sonographic examination revealed a correlate of stationary waves that was present on angiography. This report is, to our knowledge, the first to document the phenomenon of stationary waves using an imaging modality other than angiography.

Color Doppler sonography of arteries associated with perforating veins.

Background: It has been known for some time that perforating veins had associated perforating arteries. There has been no way to investigate these arteries preoperatively. The newer high resolution ultrasonic devices enable us to investigate these arteries.

[Carotid stenting with the new slotted tube stent--prospective multicenter study. Essen experiences]].

Unlabelled: The indication for therapy of high degree carotid stenoses is discussed controversely in regard to new publications. Only symptomatic carotid stenoses are accepted as indication for operative therapy (arterectomy). The new method of carotid stenting was investigated in several studies and needs to be proved in controlled prospective randomized trials.

["Panorama images" with ultrasound. A computer program joins individual images to make a continuous image].

SieScape is a novel method that enables the investigator to obtain continuous ultrasonographic images of extensive structures. Its ease of use and rapidity of deployment make SieScape the method of choice for the documentation and monitoring of large superficial lesions, for example hematomas following arterial puncture. With the aid of Color Sie Scape, not only views can be obtained in any desired plane, but also the relationship of the hematoma to the vascular structures can be documented.

Effect of hemodynamic conditions on sonographic measurements of peak systolic velocity and arterial diameter in patients with peripheral arterial stenosis.

Purpose: We measured changes in peak systolic velocity ratio and sonogaphic vascular diameter during different hemodynamic conditions in patients with femoral or iliac artery stenosis.

Methods: In 35 patients with isolated femoral or iliac artery stenosis, prestenotic and intrastenotic peak systolic velocity and inner vascular diameter were calculated using color Doppler sonography and gray-scale sonography, respectively. The measurements were performed with the patient at rest (baseline), after leg exercise, and again after oral administration of 10 mg of the vasodilator nifedipine.