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Systems and methods for avoiding mri-derived interference to simultaneously used rf systems

A simultaneous operation, sensitive technology, applied in the direction of measurement with MRI system, measurement of magnetic variables, application, etc., can solve problems such as preventing complete packaging of ultrasonic receiving elements

Active Publication Date: 2022-05-17
INSIGHTEC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in some systems, acoustic limitations prevent complete encapsulation of the ultrasound receiving element, resulting in penetration of e.g. the front layer of the receiver and / or cables by a certain amount of RF noise

Method used

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  • Systems and methods for avoiding mri-derived interference to simultaneously used rf systems
  • Systems and methods for avoiding mri-derived interference to simultaneously used rf systems
  • Systems and methods for avoiding mri-derived interference to simultaneously used rf systems

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Embodiment Construction

[0047] Figure 1A An exemplary MRI device 102 is shown. The device 102 may include a cylindrical electromagnet 104 that generates the necessary static magnetic field within a bore 106 of the electromagnet 104 . During a medical procedure, the patient is placed on a movable support table 108 within the bore 106 . A region of interest 110 within a patient (eg, the patient's head) may be located within an imaging region 112 where the electromagnet 104 generates a substantially uniform field. A set of cylindrical magnetic field gradient coils 113 may also be disposed within bore 106 and surround the patient. The gradient coil 113 generates magnetic field gradients of a predetermined magnitude in three mutually orthogonal directions for a predetermined time. Using field gradients, different spatial positions can be associated with different precession frequencies, thus giving the spatial resolution of the MR image. An RF transmitter coil 114 surrounding the imaging region 112 tr...

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Abstract

MRI interference to simultaneously operating systems can be reduced or corrected by subtracting MRI interference from signals measured using the simultaneously operating systems.

Description

technical field [0001] The present invention relates generally to methods of medical diagnosis and treatment guided by magnetic resonance imaging (MRI), and more particularly to methods of minimizing MRI-induced disturbances. Background technique [0002] Magnetic resonance imaging can be used in conjunction with ultrasound focusing in a variety of medical applications. Ultrasound penetrates soft tissue well and, due to its short wavelength, can be focused down to spots a few millimeters in size. As a result of these properties, ultrasound can and has been used for a variety of diagnostic and therapeutic medical purposes, including ultrasound imaging and non-invasive surgery. For example, focused ultrasound can be used to ablate diseased (eg, cancer) tissue without causing significant damage to surrounding healthy tissue. Ultrasound focusing systems typically utilize an acoustic transducer surface or array of transducer surfaces to generate an ultrasound beam. In a transd...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R33/48G01R33/58A61B8/08A61N7/00A61N7/02A61B8/00
CPCA61N7/02A61B8/5261G01R33/4814G01R33/583A61B8/085A61B8/4416
Inventor B·阿西夫
Owner INSIGHTEC