نتایج جستجو برای: color doppler ultrasonography
تعداد نتایج: 195427 فیلتر نتایج به سال:
Since luteal vascularization plays a decisive role for the function of the corpus luteum (CL), the investigation of luteal blood flow (LBF) might give valuable information about the physiology and patho-physiology of the CL. To quantify LBF, usually Power mode color Doppler ultrasonography is used. This method detects the number of red blood cells moving through the vessels and shows them as co...
Background: Arteriovenous fistula is an important method for hemodialysis and prediction of fistula function and failure rate and access is crucial. This study was performed to determine the association between Doppler ultrasonography findings with function and failure and access rate of fistula. Methods: In this observational comparative cross-sectional study, out of 108 patients requiring fi...
Introduction: Beta thalassemia major is a severe hemolytic anemia due to inadequate synthesis of beta chain globin. Splenomegaly secondary to extramedullary hematopoiesis and iron overload is one of the most prominent findings and makes splenectomy inevitable in majority of these patients. For many reasons these patients are at risk of hypercoagulation. Portal vein thrombosis is a rare cons...
Vasa previa is a rare but clinically important obstetrical complication that can be associated with a low-lying placenta or placenta previa. We aim to convey the challenges in diagnosing this condition by presenting 2 cases of pseudo vasa previa diagnosed antenatally as vasa previa using standard and color Doppler ultrasonography. Both patients were falsely diagnosed; only a low-lying placenta ...
[This corrects the article DOI: 10.1371/journal.pone.0188948.].
The cerebral hypoperfusion caused by chronic progressive stenosis or occlusion of intracranial arteries in moyamoya disease can be treated by direct bypass or indirect revascularization procedures. The extent of collaterals from the external carotid artery (ECA) after indirect revascularization surgery is the key point of angiographic follow-up, and the invasiveness of angiography impelled us t...
BACKGROUND Perforator flaps are well established, and their usefulness as freestyle island flaps is recognized. The whereabouts of vascular perforators and classification of perforator flaps in the face are a debated subject, despite several anatomical studies showing similar consistency. In our experience using freestyle facial perforator flaps, we have located areas where perforators are cons...
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