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Apparatus for correcting position of therapeutic instrument guided by magnetic resonance

A treatment instrument, magnetic resonance technology, applied in the field of position correction of treatment instruments, can solve problems such as failure of treatment, failure to correctly reflect the relative position of the transducer and the tumor, failure to hit the predetermined treatment area, etc., to ensure accuracy and precision Effect

Active Publication Date: 2010-01-13
SIEMENS HEALTHINEERS LTD
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Problems solved by technology

During MR-guided HIFU treatment, such as the use of HIFU transducers to treat tumors, due to the distortion caused by the nonlinearity of the magnetic field gradient, the MR image will not correctly reflect the relative position of the transducer and the tumor , the result of this is that the ultrasonic beam emitted by the transducer cannot hit the intended treatment area, so that the treatment effect is not good, and even the treatment fails

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  • Apparatus for correcting position of therapeutic instrument guided by magnetic resonance
  • Apparatus for correcting position of therapeutic instrument guided by magnetic resonance
  • Apparatus for correcting position of therapeutic instrument guided by magnetic resonance

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Embodiment Construction

[0029] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0030] figure 2 It is a flow chart of a method for correcting the position of an MR-guided therapeutic instrument according to an embodiment of the present invention. In this embodiment, an MR-guided HIFU transducer is used to treat a tumor as an example, that is, the tumor is the treatment target, and the position of the HIFU transducer is corrected. from figure 2 It can be seen that correcting the position of the HIFU transducer in this embodiment specifically includes the following steps:

[0031] Step S201: Determine the position where the HIFU transducer needs to be during treatment, that...

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Abstract

The invention discloses a method for correcting position for therapeutic equipment guided by an MR and a treatment to a therapeutic target by the therapeutic equipment comprises the processes: according to the picture position of the therapeutic target, the spatial location of the therapeutic equipment is determined; a gradient distortion correction offset corresponding to the therapeutic target is calculated; on the basis of the gradient distortion correction offset, the spatial location of the therapeutic equipment is corrected. The invention also discloses a position correction device for the therapeutic equipment guided by the MR, which comprises a position determination unit that is used for determining the spatial location of the therapeutic equipment according to the picture position of the therapeutic target, a gradient distortion correction unit which is used for calculating the gradient distortion correction offset corresponding to the therapeutic target and for correcting the spatial location of the therapeutic equipment based on the gradient distortion correction offset. When the method and the device are used, the position deviation of the therapeutic equipment guided by the MR is corrected while the position deviation is caused by the nonlinearity of gradient magnetic field, thus ensuring the accuracy and precision of therapy guided by the MR.

Description

technical field [0001] The present invention relates to magnetic resonance imaging (MRI, Magnetic Resonance Imaging) technology, in particular to a method and device for correcting the position of a magnetic resonance guided treatment instrument. Background technique [0002] The main magnet of the MRI imaging system is used to generate a highly uniform and stable static magnetic field B 0 , so that the hydrogen nuclei in the human body in the magnetic field are magnetized to form a magnetization vector. When the magnetization vector is subjected to the action of the radio frequency alternating magnetic field satisfying the resonance condition, a resonance signal is generated. [0003] Figure 1a is a schematic diagram of the static magnetic field generated by the main magnet in the MRI system. If there is only a uniform static magnetic field B 0 In the magnetic field, the magnetization intensity of all parts of the human body precesses around the direction of the static ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/055G01R33/58G01R33/54
Inventor 施莱克·奥利弗
Owner SIEMENS HEALTHINEERS LTD
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