The level of workers' exposure depends both on the type of the magnet and on the ergonomical characteristic of design of the particular MRI scanner. This paper presents the current state of the art on occupational exposure to static magnetic field health effects, gaps in scientific data, MRI ...
An MRI scanner [主语] uses [谓语] magnetic fields and radio waves [宾语] to track the changes [状语] in oxygenated blood. [定语] 分句-1 The changes [主语] in oxygenated blood [定语] accompany [谓语] mental activity. [宾语] 4. 句子翻译 主句 An MRI scanner uses magnetic fields and...
Magnetic Field - The region surrounding a magnet (or current carrying conductor) is equiped with certain properties... Magnetic field is a vector quantity; the direction of the field is defined as the direction that the north pole of the small magnet
Installation of the MRI magnet continues with an iterative, fine-tuning process known as shimming. The aim here is to make the magnetic field inside the bore of the MRI scanner more homogeneous by placing pieces of iron (shims) in the appropriate place or by adjusting the current in special ...
The MRI requires a two-step process to generate an image once the patient is placed into the scanner. First, a powerful magnet is used to align all the protons in the body in the same direction. Protons are part of the core of every atom in nature. Second, radiofrequency waves are pul...
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MRI (magnetic resonance imaging) is a noninvasive diagnostic test that takes detailed images of the soft tissues of the body. Unlike X-rays or CT, images are created by using a magnetic field, radio waves, and a computer. It allows your doctor to view your spine or brain in slices, as...
Which way does the main magnetic field point in an MR scanner? The answer depends on the type of magnet and its configuration. The vast majority of MR scanners sold today are of cylindrical (tube) design and have their main magnetic fields directed along the bore of the scanner. All ...
MRI is a very safe procedure. The strong magnetic field itself does not hurt people, unless they have certain types of metal implanted in their body. The magnetic field can cause certain types of metal to move, which could potentially cause an injury. ...
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