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
461893查看　461893　在百度字典中的解释百度英翻中〔查看〕
461893查看　461893　在Google字典中的解释Google英翻中〔查看〕
461893查看　461893　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:


  • Fringe magnetic fields - Questions and Answers in MRI
    Depending on the design of the magnet and the room a moderately large fringe field may extend for several meters around, above, and below an MR scanner Field plots (similar to the illustration right) are available from each magnet manufacturer
  • Fringe field (MRI) | Radiology Reference Article | Radiopaedia. org
    In effect, this results in an elongated “tail” to the fringe magnetic field As a consequence, the fringe field can often extend beyond the limit of the MRI scanning room, and needs to be accounted for and often shielded
  • MR magnet types - Questions and Answers in MRI
    Rather than a single large continuous winding, 6-10 large and small solenoidal bands are typically placed to create a more uniform central field with minimized fringe Although it is tempting to think of the entire C-shaped structure as a solid permanent magnet, this is not the case
  • Primary Magnetic Resonance Imaging Magnets - Radiology Key
    The principal advantage of a permanent magnet MRI system is the insignificant fringe magnetic field, which for any MRI system must be no greater than 0 5 mT in any controlled area
  • Magnetic Resonance Imaging Instrumentation • Magnetic Resonance in . . .
    It needs no cooling because there is no power dissipa­tion and it has a small fringe (stray) field when compared to the other mag­net systems Capital and ope­ra­tio­nal costs of permanent magnets are low
  • Magnetic fields in MRI — Principles of MRI
    The main magnetic field is created with solenoid coils, shown above, that can provide a large region in space where there is large, homogeneous magnetic field The large magnetic field is required to create stronger polarization
  • Access Restriction | Radiology
    Each MRI system has its own unique fringe field due to varying magnetic design, shielding characteristics, and field inhomogeneity Each site must be supplied with a schematic that clearly defines the fringe field of the magnet
  • Physics of magnetic resonance imaging - Wikipedia
    In MRI, the static magnetic field is augmented by a field gradient coil to vary across the scanned region, so that different spatial locations become associated with different precession frequencies
  • Magnetic Shielding and Gradient Systems in MRI - Quizlet
    Different MRI systems have different fringe fields; permanent magnets have relatively low fringe fields, while unshielded high field systems have large fringe fields that can extend many feet or meters
  • MRI - Fringe Field - MR-TIP: Database
    The magnetic field outside the magnet, which is also called the stray field Its strength depends on the magnet type and the field strength The higher the field strength, the larger the fringe field See Magnetic Fringe Field





中文字典-英文字典  2005-2009