Magnetic resonance imaging subject support

Patent metadata

Field	Value
Publication number	US-2016139218-A1
Application number	US-201414898292-A
Country	US
Kind code	A1
Filing date	Jun 17, 2014
Priority date	Jun 17, 2013
Publication date	May 19, 2016
Grant date	—

Abstract

The invention provides for a subject support assembly ( 125 ) for a magnetic resonance imaging system ( 100, 200, 300, 400, 500 ). The subject support is operable for supporting a subject ( 118 ) within an imaging zone ( 108 ) of a magnet ( 104 ) of the magnetic resonance imaging system. The subject support is operable for supporting at least one radio frequency amplifier ( 124, 124′, 124″ ) outside of the imaging zone. The subject support is operable for supplying DC electrical power to the at least one radio frequency amplifier.

First claim

1 . A subject support assembly for a magnetic resonance imaging system, comprising: a radio frequency transmit coil and a subject support for supporting a subject within an imaging zone of a magnet of the magnetic resonance imaging system, wherein the subject support assembly supports at least one radio frequency amplifier for driving the radio frequency transmit coil and positioned outside of the imaging zone when the subject support is in use in the magnetic resonance imaging system, and wherein the subject support assembly is provided with a DC power source for supplying DC electrical power to the at least one radio frequency amplifier, wherein the at least one radio frequency amplifier is detachably supported by the subject support, wherein the subject support comprises a first DC electrical connector, wherein the at least one radio frequency amplifier comprises a second DC electrical connector, wherein the first DC electrical connector is operable for forming an electrical connection with the second DC electrical connector, and wherein the subject support is operable for supplying DC electrical power to the at least one radio frequency amplifier when the first DC electrical connector is connected to the second DC electrical connector.

2 . (canceled)

3 . The subject support assembly of claim 1 , wherein the subject support comprises a first coolant connector, wherein the at least one radio frequency amplifier comprises a second coolant connector, wherein the first coolant connector is operable for forming a connection with the second coolant connector, wherein the subject support is operable to supply coolant to the at least one radio frequency amplifier when the first coolant connector is connected with the second coolant connector.

4 . The subject support assembly of claim 1 , wherein the subject support comprises a sensor operable for determining if the at least one radio frequency generator is connected to the subject support.

5 . The subject support assembly of claim 1 , wherein the subject support comprises a first fiber optic connector, wherein the at least one radio frequency amplifier comprises a second fiber optic connector, wherein the first fiber optic connector is operable for forming a connection with the second fiber optic connector, wherein the subject support is any one of the following: operable to transmit radio frequency control signals to the at least one radio frequency amplifier, receive data from the at least one radio frequency amplifier, and combinations thereof.

6 . The subject support assembly of claim 1 , wherein the subject support comprises the at least one radio frequency amplifier.

7 . The subject support assembly of claim 1 , wherein the at least one radio frequency amplifier is incorporated into the subject support.

8 . The subject support assembly of claim 6 , wherein the at least one radio frequency amplifier comprises a DC electrical power storage device operable for powering the generation of pulsed radio-frequency pulses by the at least one radio frequency amplifier.

9 . The subject support assembly of claim 6 , wherein each of the at least one radio frequency amplifier comprises at least one radio frequency connector for connecting to one or more magnetic resonance imaging transmit coils.

10 . The subject support assembly of claim 6 , wherein the at least one radio frequency amplifier comprises a RF combiner network for controlling a multi-element magnetic resonance imaging transmit coil.

11 . The subject support assembly of claim 6 , wherein the at least one radio frequency amplifier is a class D or class E amplifier.

12 . The subject support assembly of claim 6 , wherein the at least one amplifier has a display operable for any one of the following: displaying an operating status, indicating a safety status, and for controlling a service mode of the at least one amplifier.

13 . A magnetic resonance imaging system comprising a subject support assembly according to claim 1 , and wherein the magnetic resonance imaging system comprises a magnet with an imaging zone.

14 . The magnetic resonance imaging system of claim 13 , wherein the magnetic resonance imaging system comprises at least one selected from a group consisting of: an interventional device, a catheter system, a biopsy needle system, a microwave ablation catheter system, a radio-frequency ablation catheter system, an ablation catheter system, a stent placement system, a radio-active seed placement system, a cryoablation system, a high intensity focused ultrasound catheter system, a high intensity focused ultrasound system, a chemoembolization system, a ECG system, and combinations thereof.

15 . The magnetic resonance imaging system of claim 13 , wherein the subject support is operable for detachably receiving the at least one radio frequency amplifier, wherein the subject support comprises a first DC electrical connector, wherein the at least one radio frequency amplifier comprises a second DC electrical connector, wherein the first DC electrical connector is operable for forming an electrical connection with the second DC electrical connector, and wherein the subject support is operable for supplying DC electrical power to the at least one radio frequency amplifier when the first DC electrical connector is connected to the second DC electrical connector, wherein the at least one radio frequency amplifier comprises a DC electrical power storage device operable for powering the generation of pulsed radio-frequency pulses by the at least one radio frequency amplifier, wherein the magnetic resonance imaging system further comprises a charging station operable for receiving the at least one radio frequency generator, and wherein the charging station is operable for charging the DC electrical power storage device.

Assignees

• Koninkl Philips Nv

Inventors

• Possanzini Cecilia
• Leussler Christoph

Classifications

• G01R33/3403 Primary

  Means for cooling of the RF coils, e.g. a refrigerator or a cooling vessel specially adapted for housing an RF coil · CPC title

• G01R33/3614

  RF power amplifiers · CPC title

• G01R33/288

  Provisions within MR facilities for enhancing safety during MR, e.g. reduction of the specific absorption rate [SAR], detection of ferromagnetic objects in the scanner room · CPC title

• G01R33/30 Primary

  Sample handling arrangements, e.g. sample cells, spinning mechanisms · CPC title

• G01R33/36 Primary

  Electrical details, e.g. matching or coupling of the coil to the receiver · CPC title