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Systems and methods for wireless communication for magnetic resonance imaging (MRI) systems

A magnetic resonance imaging and wireless communication technology, applied in wireless communication, magnetic resonance measurement, synchronization device, etc., can solve problems such as image artifacts and drift

Active Publication Date: 2018-08-03
KONINKLJIJKE PHILIPS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This time-varying time delay can cause drift between the RF station's internal clock and the master clock
[0004] Unfortunately, when the wireless RF station internal clock is not accurately synchronized with the MRI system clock, due to the nature of the encoding method used, the phase noise of the wireless RF station internal clock can lead to image artifacts in the reconstructed images, especially in long time acquisition period

Method used

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  • Systems and methods for wireless communication for magnetic resonance imaging (MRI) systems
  • Systems and methods for wireless communication for magnetic resonance imaging (MRI) systems
  • Systems and methods for wireless communication for magnetic resonance imaging (MRI) systems

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Embodiment Construction

[0025]The invention will now be described more fully hereinafter with reference to the accompanying drawings, in which embodiments of the invention are shown. This invention may, however, be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided as teaching examples of the invention.

[0026] figure 1 An exemplary embodiment of a magnetic resonance imaging (MRI) system 100 is illustrated.

[0027] MRI system 100 includes static magnet 1, gradient coils 2, gradient power supply 103, patient table or patient bed 104, patient table controller 105, RF coil unit 106a, wireless RF station 106b, transmitter 107, clock generator 108, RF / Gradient field controller 109 , driver 110 , radio unit 111 , reconstruction front end 115 , reconstruction system 120 , storage device 121 , display 122 , input unit 123 , main controller 124 and data generator 125 .

[0028] In some embodiments, components oth...

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Abstract

A magnetic resonance imaging (MRI) system (100, 400, 500) includes a wireless RF station (20, 320, 420, 520, 620) which is associated with one or more RF coils which sense the magnetic resonance (MR)signal emitted from a subject under MRI examination. The wireless RF station communicates digital data representing the sensed MR signal to an MRI controller (124) for further processing, which may include display. An internal clock (2202, 3202) in the wireless RF station is precisely synchronized with the MRI controller clock (108, 2101, 3101), with carrier phase synchronization and code phase tracking of a predefined code sequence such as a pseudo random number (PRN) sequence.

Description

technical field [0001] The present system generally relates to a magnetic resonance imaging (MRI) system having a wireless radio frequency (RF) coil portion and a method of operation thereof. Background technique [0002] Magnetic resonance imaging (MRI) is an imaging method that typically uses frequency and phase encoding of protons for image reconstruction. More recently, MRI systems have begun to use one or more wireless RF coils to sense magnetic resonance signals emanating from a subject undergoing an MRI examination. Specifically, a wireless RF coil acquires analog MR information during an acquisition session, and then an associated RF coil unit (also referred to herein as a wireless RF station) converts the analog MR information to form digitized information, e.g., digitized raw data (k space) information. Thereafter, the wireless RF station transmits the digitized information to the system controller for further processing and / or display on the MRI system's display...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R33/36H04W56/00
CPCG01R33/283G01R33/3692H04W56/0085G01R33/36H04B1/26H04B1/30
Inventor A·赖高斯基P·雷德T·奥尔蒂斯G·R·丁辛
Owner KONINKLJIJKE PHILIPS NV