Method and apparatus for receiving signals for nuclear magnetic resonance imaging system
A nuclear magnetic resonance imaging and system signal technology, which is applied in the fields of magnetic resonance measurement, measurement equipment, electric/magnetic exploration, etc., can solve the problem of weak signal acceptance ability of saddle coil, limited effect of imaging area, and insignificant improvement of imaging quality, etc. question
Inactive Publication Date: 2005-10-05
SIEMENS SHENZHEN MAGNETIC RESONANCE
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However, under the current technical conditions, due to the weak signal acceptance ability of the saddle coil, the effect of actually increasing the imaging area is limited, and the improvement of the imaging quality is not obvious, and the imaging quality of the edge parts on both sides of the imaging area will be significantly reduced. Difference
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[0064] figure 1 A structure diagram of an antenna array of the present invention is shown. In the figure, L is a receiving coil group composed of a first annular receiving coil and a saddle coil, and C1 and C2 are two annular receiving coils of a double annular receiving coil receiving unit respectively. The two annular receiving coils C1 and C2 of the double annular receiving coil are connected in series head to tail, that is, the coil head of C1 is connected to the coil tail of C2, and the coil tail of C1 is connected to the coil of C2. head to head. Since the newly added counter-rotating receiving coil is composed of two parallel coil loops symmetrically distributed on both sides of the original first annular receiving coil, and is distributed in the same saddle coil as the first annular receiving coil. The inner side of the saddle surface, so the imaging area of the coil can be enlarged without significantly increasing the volume of the antenna. At the same time, sinc...
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The present invention discloses a nuclear magnetic resonance imaging system signal receiving method and its equipment. The described equipment includes a first toroidal receiving coil and a saddle receiving coil overlapped on said first toroidal receiving coil. Along the axial direction of said first toroidal receiving coil are set two independent toroidal receiving coils or two head-tail connected counterrevolving toroidal receiving coils which are equidistant from said first toroidal receiving coil to form a double toroidal receiving coil unit. Besides, said invention also provides the working principle of said equipment, and also provides the advantages of said invented method.
Description
(1) Technical field [0001] The invention relates to a signal receiving antenna device and a signal receiving method in a nuclear magnetic resonance imaging system. Specifically, it relates to a receiving antenna device in a nuclear magnetic resonance imaging system and a method for adjusting the working mode of the receiving coil to improve the signal-to-noise ratio of the output signal of the device and improve the signal uniformity and edge characteristics of the imaging area. (2) Background technology [0002] The invention is suitable for detecting the limbs of human body and the limbs or body nuclear magnetic resonance image signals of animals whose shape is similar to the limbs of human body. [0003] In the existing nuclear magnetic resonance imaging system for receiving antenna devices such as human knee joint signals, the antenna basic unit structure for receiving signals is usually a combination of a first loop (LOOP) receiving coil and a saddle (SADDLE) receiving ...
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IPC IPC(8): A61B5/05A61B5/055G01R33/20G01R33/341G01R33/3415G01V3/00
CPCG01R33/3678A61B5/055G01R33/3415
Inventor 汪坚敏刘晓飞薛廷强贺增合
Owner SIEMENS SHENZHEN MAGNETIC RESONANCE