英文字典中文字典


英文字典中文字典51ZiDian.com



中文字典辞典   英文字典 a   b   c   d   e   f   g   h   i   j   k   l   m   n   o   p   q   r   s   t   u   v   w   x   y   z       







请输入英文单字，中文词皆可：


请选择你想看的字典辞典：
单词字典翻译
creeks查看　creeks　在百度字典中的解释百度英翻中〔查看〕
creeks查看　creeks　在Google字典中的解释Google英翻中〔查看〕
creeks查看　creeks　在Yahoo字典中的解释Yahoo英翻中〔查看〕

安装中文字典英文字典查询工具!


中文字典英文字典工具:
选择颜色:
输入中英文单字

































































英文字典中文字典相关资料:


  • Portal vein | Radiology Reference Article | Radiopaedia. org
    Immediately before reaching the liver, the portal vein divides in the porta hepatis into left and right portal veins The right portal vein divides into anterior (supplying segments 5 and 8) and posterior (supplying segments 6 and 7) branches
  • Pulsatile portal venous flow | Radiology Reference Article . . .
    Pathologically, pulsatile flow in the portal vein have a variety of differentials, as below 2,4 To differentiate between the primary causes, concurrent assessment of the hepatic veins should be performed
  • US of the Portal Vein | RadioGraphics
    The main portal vein provides the majority of blood flow to the liver and is subject to intrinsic and extrinsic abnormalities that can be readily identified at US A complete evaluation of the portal veins requires gray-scale, color, and spectral Doppler US
  • Typical and atypical portal vein Doppler ultrasound spectrums . . . - EPOS™
    Normal portal vein waveform Sonographically, PV has a thick and echogenic wall It demonstrates antegrade flow direction (hepatopetal flow) The normal PV waveform is described as phasic, with minimal or gentle undulation depending on the cardiac cycle and respiration [3] The flow velocity ranges from 16 to 40cm sec [3-4] (Fig 3)
  • Ultrasound Assessment of the Hepatic Vasculature - Radiology Key
    This chapter reviews the normal hemodynamics of the liver and then considers the sonographic assessment of portal hypertension, portal vein obstruction, hepatic vein obstruction, transjugular intrahepatic portosystemic shunts (TIPS), and hepatic artery injury
  • Ultrasound Evaluation of the Portal and Hepatic Veins
    Spectral Doppler waveforms from the portal and HVs should be obtained during quiet respiration, as deep inspiration will flatten venous waveforms and decrease PV velocity However, when evaluating the HA, the PRF and wall filter will need to be increased to avoid aliasing and motion artifact
  • Doppler ultrasound of the portal system - Normal findings
    This document provides an overview of Doppler ultrasound of the normal portal system, including: 1 Principles of Doppler ultrasound and how to adjust settings like color box size, velocity scale, gain, and wall filter to optimize the examination 2 Sites for duplex insonation of the portal system and techniques for obtaining spectral
  • Portal Vein Doppler – Sonographic Tendencies
    When the portal vein enters the liver it bifurcates into right and left main branches The right portal vein bifurcates into an anterior and posterior branch which feed segments 5, 6, 7 and 8 respectively, whereas the left branch feeds segments 2, 3 and 4
  • Portal Vein Thrombosis: Imaging the Spectrum of Disease With an . . . - AJR
    PVT may be a complication of liver cirrhosis, but it may also occur as a primary vascular disorder without liver disease PVT can result in portal hypertension and may present with variceal bleeding or hypersplenism Radiologists should be familiar with the imaging of PVT in patients of various ages and in different clinical scenarios





中文字典-英文字典  2005-2009