نتایج جستجو برای: portal imaging
تعداد نتایج: 487433 فیلتر نتایج به سال:
An organic scintillator-based radiation portal monitor (RPM) prototype system with imaging capabilities has been developed based on the neutron–gamma emission tomography technique. The technique enables rapid detection and precise location of small amounts special nuclear materials, such as plutonium, using time energy correlations between fast neutrons gamma rays from spontaneous fission low f...
BACKGROUND The extended knee lateral midpatellar portal for intraarticular injection of the knee is accurate but is not practical for all patients. We hypothesized that a modified anteriolateral portal where the synovial membrane of the medial femoral condyle is the target would be highly accurate and effective for intraarticular injection of the knee. METHODS 83 subjects with non-effusive os...
BACKGROUND/PURPOSE Intrahepatic portal vein aneurysm is rare and its natural history is unknown. A 22-year-old healthy man, who wished to donate part of his liver to his diseased father, was incidentally diagnosed to have an intrahepatic portal vein aneurysm. The surgical decision of performing live donor hepatectomy for such a patient is normally difficult. We combined modern imaging reconstru...
UNLABELLED The P22 capsid is a T=7 icosahedrally symmetric protein shell with a portal protein dodecamer at one 5-fold vertex. Extending outwards from that vertex is a short tail, and putatively extending inwards is a 15-nm-long α-helical barrel formed by the C-terminal domains of portal protein subunits. In addition to the densely packed genome, the capsid contains three "ejection proteins" (E...
BACKGROUND The objective of this study was to retrospectively investigate and compare multidetector computed tomography findings of hepatocellular carcinoma (HCC) in hepatitis B virus (HBV)-positive and -negative patients. METHODS Triphasic (arterial, portal venous, and delayed phases) dynamic multidetector computed tomography (CT) was performed in 83 patients with HCC, 48 of whom were HBV-po...
With considerable advances in technology, ultrasound, as a noninvasive procedure has been more frequently used for diagnosis of liver diseases and portal hypertension (P.H.). Venography and splenoportography, both are invasive procedures with considerable X-ray exposure. The information obtained from these procedures are limited only to condition of vesseles, while with ultr...
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