[1] This paper describes estimation of low-altitude atmospheric refractivity from radar sea clutter observations. The vertical structure of the refractive environment is modeled using five parameters, and the horizontal structure is modeled using six parameters. The refractivity model is implemented with and without an a priori constraint on the duct strength, as might be derived from soundings...

We report here on a case of extrahepatic biliary cystadenoma arising from the common hepatic duct. A 42-year-old woman was evaluated by us to find the cause of her jaundice. Ultrasonography and CT showed a cystic dilatation of the common hepatic duct and also marked dilatation of the intrahepatic duct. Direct cholangiography demonstrated a large filling defect between the left hepatic duct and ...

Flow control devices are used within complex intakes to reduce the flow distortion which can adversely impact stability and performance of embedded engines. There is a need assess capability modern computational methods such as detached eddy based models compute unsteady flowfield evaluate potential benefits on distortion. This paper investigates for an S-duct using Zonal Detached Eddy Simulati...

thyroglossal duct cysts are the most common congenital anomalies in thyroid development, which in less than 1% of cases are malignant. in most cases the diagnosis is made postoperatively. up to now, a few cases have been reported which had been papillary carcinoma. controversies exist concerning its nature and treatment. we present a 30 years old woman with papillary carcinoma of thyroglossal d...

BACKGROUND This retrospective study aimed to investigate the incidence of each type of accessory hepatic duct by drip infusion cholangiography with CT (DIC-CT). METHODS Five hundred sixty nine patients who underwent preoperative DIC-CT and laparoscopic cholecystectomy were reviewed. Accessory hepatic ducts were classified as follows: type I (accessory hepatic ducts that merged with the common...

Simultaneous dilation of both the common bile duct and the pancreatic duct (double-duct sign) is usually because of ampullary or pancreatic tumours. Here we report an unusual cause of double-duct dilation; we describe the case of a 49-year-old female who developed afferent loop syndrome after pylorus-preserving pancreaticoduodenectomy: cross-sectional imaging of the abdomen revealed a double-du...

Abstract Background The anatomical variation of the frontal sinus and its intimate relation to skull base orbit makes surgery demanding. extended endoscopic allows wide better drainage preventing recurrence disease. Fourteen patients underwent EEFSS from May 2017 2019. These are nine presented by chronic recurrent sinusitis, three fronto ethmoidal mucocele two with external fistula. Draff III d...

BACKGROUND We performed duct-to-mucosa pancreaticojejunostomy with resection of jejunal serosa in 55 patients, and here compare the clinical results between duct-to-mucosa pancreaticojejunostomies with a non-dilated pancreatic duct and those with a dilated duct. PATIENTS AND METHODS In the period 1999 to 2005, 55 patients (27 F, 28 M; mean age 63.4 years) underwent duct-to-mucosa pancreaticoj...