Web portal applications that dynamically generate results in response to user requests are more popular than ever. Such portal applications usually consist of a business logic component and a very large database, or databases that hold the portal’s content. Despite efforts to speed up response generation, ever-rising user demand means that replication of a portal’s logic and database will be ne...

In this study, teachers’ acceptance and use of an educational portal is assessed based on data from two sources: usage data (number of logins, downloads, uploads, reactions and pages viewed) and an online acceptance questionnaire. The usage data is extracted on two occasions from the portal’s database: at survey completion (T1) and twenty-two months later (T2). Framework for this study is C-TAM...

The purpose of the paper is to present and evaluate the performance of a new software-based registration system for patient setup verification, during radiotherapy, using electronic portal images. The estimation of setup errors, using the proposed system, can be accomplished by means of two alternate registration methods. (a) The portal image of the current fraction of the treatment is register...

The purpose of the paper is to present and evaluate the performance of a new software-based registration system for patient setup verification, during radiotherapy, using electronic portal images. The estimation of setup errors, using the proposed system, can be accomplished by means of two alternate registration methods. (a) The portal image of the current fraction of the treatment is register...

Objective: The aim of this study was ultrasonographic findings and technique ofthe liver in the Lori breed sheep.Design: Descriptive study.Animals: 10 clinically healthy, female sheep.Procedures: Ultrasound examination of liver performed from the caudal aspect of13th rib to the 7th intercostals spaces (ICS). The possibility of liver imaging fromeach ICS, distance between the position of liver i...

We report two premature neonates with Candida albicans septic thrombosis of the portal vein who developed, in very early childhood, the sonographic appearance of cavernous transformation of the vessel and/or clinical signs of extrahepatic portal hypertension.

Portal biliopathy is a rare complication of extrahepatic portal vein obstruction. Jaundice occurs in symptomatic patients with fibrotic strictures. Short-term improvement in such patients can be achieved with endoscopic retrograde cholangio-pancreatography with balloon dilatation and stent placement. Surgery in these patients is traditionally two staged. We report the results of a one-stage pro...

This report describes two non-cirrhotic patients with portal vein thrombosis who underwent successful balloon occlusion retrograde transvenous obliteration (BRTO) of gastric varices with a satisfactory response and no complications. One patient was a 35-year-old female with a history of Crohn's disease, status post-total abdominal colectomy, and portal vein and mesenteric vein thrombosis. The o...

Spontaneous bacterial peritonitis is defined by a positive ascitic fluid bacterial culture and an elevated ascitic fluid absolute polymorphonuclear count (≥250 cells/mm3) without an evident intra-abdominal, surgically treatable source of infection. Transient ascites is well documented in patients with extrahepatic portal venous obstruction but spontaneous bacterial peritonitis complicating extr...