Magnetic resonance imaging apparatus
A technology of magnetic resonance imaging and image data, which is used in magnetic resonance measurement, measurement of magnetic variables, medical science, etc.
Active Publication Date: 2012-07-18
TOSHIBA MEDICAL SYST CORP
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Problems solved by technology
In this case, the receiving RF coil must be replaced every time the imaging site is changed
Especially when taking blood flow images of the whole body, the RF coil must be replaced very frequently
[0013] In addition, when the imaging sequence (sequence) suitable for capturing blood flow images is different for each imaging site, the user must reset the imaging sequence every time the imaging site changes.
[0014] In this way, when shooting blood flow images spanning a wide range, there is a problem that the user must perform complicated operations such as resetting the shooting sequence in addition to complicated operations such as selecting and setting the receiving RF coil.
In addition, this problem is not limited to blood flow images, but is a common problem when taking images of a large area
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[0027] Embodiments of the magnetic resonance imaging apparatus of the present invention will be described with reference to the drawings.
[0028] figure 1 It is a configuration diagram showing an embodiment of the magnetic resonance imaging apparatus of the present invention.
[0029] The magnetic resonance imaging apparatus 20 incorporates a cylindrical static magnetic field magnet 21 forming a static magnetic field, a shim coil 22 provided inside the static magnetic field magnet 21, and a tilting gantry (gantry) (not shown). Magnetic field coil 23 and RF coil 24 .
[0030] In addition, a control system 25 is provided in the magnetic resonance imaging apparatus 20 . The control system 25 includes a static magnetic field power supply 26 , a gradient magnetic field power supply 27 , a shim coil power supply 28 , a transmitter 29 , a receiver 30 , a sequence controller 31 and a computer 32 . The gradient power supply 27 of the control system 25 is composed of an X-axis gradi...
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A magnetic resonance imaging apparatus includes an imaging condition setting unit, a data acquisition unit and an image data generating unit. The imaging condition setting unit sets respective imaging conditions corresponding to plural imaging regions. The respective imaging conditions include at least one non-contrast-enhanced imaging condition. The data acquisition unit acquires respective pieces of data corresponding to the plural imaging regions according to the respective imaging conditions. The image data generating unit generates image data based on the respective pieces of data corresponding to the plural imaging regions.
Description
technical field [0001] The present invention relates to a kind of high-frequency (RF: radio frequency, radio frequency) signal of Larmor frequency to magnetically excite the atomic nucleus spin (spin) of the object under examination, according to the nuclear magnetic resonance (NMR: nuclear Magnetic resonance imaging (MRI: Magnetic Resonance Imaging) apparatus that reconstructs an image from a signal of magnetic resonance, in particular, it involves setting imaging conditions for each imaging site, and collecting data from each imaging site according to the set imaging conditions. magnetic resonance imaging device. Background technique [0002] Magnetic resonance imaging is a shooting method in which the nuclear spins of the subject placed in a static magnetic field are magnetically excited by an RF signal of Larmor frequency, and the image is reconstructed according to the NMR signal generated with the excitation. [0003] In the field of magnetic resonance imaging, MRA (m...
Claims
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IPC IPC(8): A61B5/055G01R33/44
Inventor 宮崎美津惠
Owner TOSHIBA MEDICAL SYST CORP