Split magnetic resonance imaging system

Patent metadata

Field	Value
Publication number	US-9423477-B2
Application number	US-201414452416-A
Country	US
Kind code	B2
Filing date	Aug 5, 2014
Priority date	Feb 24, 2010
Publication date	Aug 23, 2016
Grant date	Aug 23, 2016

Abstract

A magnetic resonance imaging (MRI) system includes a split magnet system having a pair of MRI magnet housings separated by gap. A pair of main MRI magnets are disposed within respective MRI magnet housings. A plurality of buttress assemblies are attached to the MRI magnet housings. Some or all of the buttress assemblies are provided with removable connections to the MRI magnet housings. This allows for partial disassembly of the MRI system for improved transport and maneuverability for relocating the MRI system. The MRI system can include a gantry in the gap for supporting a radiation therapy system. Also, the removably buttress assemblies can be used for housing conduits, such as electrical and fluid conduits, between the pair of MRI magnet housings.

First claim

What is claimed is:

1. A magnetic resonance imaging (MRI) system comprising:
a first main MRI magnet disposed within a first MRI magnet housing;
a second main MRI magnet disposed within a second MRI magnet housing separated by a gap from the first MRI magnet housing;
a first plurality of buttress assemblies attached to an outer surface of the first MRI magnet housing, the first plurality of buttress assemblies configured to support the first MRI magnet housing;
a second plurality of buttress assemblies attached to an outer surface of the second MRI magnet housing, the second plurality of buttress assemblies configured to support the second MRI magnet housing, and wherein at least one of the first and second plurality of buttress assemblies comprises an interior through which one or more conduits is routed; and
a plurality of buttress connectors extending between the respective first and second plurality of buttress assemblies,
wherein at least one of the first plurality of buttress assemblies is removably attached to the outer surface of the first MRI magnet housing and at least one of the second plurality of buttress assemblies is removably attached to the outer surface of the second MRI magnet housing.

2. The MRI system of claim 1 , wherein each of the plurality of buttress connectors attaches to one of the first plurality of buttress assemblies and/or one of the second plurality of buttress assemblies.

3. The MRI system of claim 2 , wherein each of the plurality of buttress connectors attaches to one of the first plurality of buttress assemblies and/or one of the second plurality of buttress assemblies by one or more removable connection devices.

4. The MRI system of claim 1 , further comprising a gantry positioned in the gap.

5. The MRI system of claim 4 , further comprising a radiation therapy device supported by the gantry.

6. The MRI system of claim 1 , further comprising a cooling system, the cooling system including fluid conduit for carrying coolant for cooling the first and second main MRI magnets.

7. The MRI system of claim 6 , wherein the fluid conduit extends from within the first MRI magnet housing to within the second MRI magnet housing by routing through the interior of the at least one of the first plurality of buttress assemblies and routing through the interior of the at least one of the second plurality of buttress assemblies.

8. The MRI system of claim 1 , further comprising a power system, the power system including electrical conduit for providing electrical power to the first and second main MRI magnets.

9. The MRI system of claim 8 , wherein the electrical conduit extends from within the first MRI magnet housing to within the second MRI magnet housing by routing through the interior of the at least one of the first plurality of buttress assemblies and routing through the interior of the at least one of the second plurality of buttress assemblies.

10. The MRI system of claim 8 , wherein the first and second MRI magnet housings are separated along a longitudinal axis of the system and wherein the first and second main MRI magnets are disposed about the longitudinal axis.

11. The MRI system of claim 1 , wherein the first and second MRI magnet housings are substantially cylindrical such that a patient bed of the system extends through a center of the first and second MRI housings.

12. A magnetic resonance imaging (MRI) system comprising:
a first main MRI magnet surrounded by a first MRI magnet housing;
a second main MRI magnet surrounded by a second MRI magnet housing and separated from the first MRI magnet housing by a MRI magnet gap;
a first buttress assembly removably attached to an outer surface of the first MRI magnet housing;
a second buttress assembly removably attached to the first buttress assembly and removably attached to an outer surface of the second MRI magnet housings; and
a cooling system including a fluid conduit for carrying coolant for cooling the first and second main MRI magnets that routes through an interior of at least one of the first and second buttress assemblies.

13. The MRI system of claim 12 , wherein the second buttress assembly is removably attached to the first buttress assembly by a buttress connector that is removably attached to the first and second buttress assemblies.

14. The MRI system of claim 13 , wherein the fluid conduit extends from within the first MRI magnet housing to within the second MRI magnet housing by routing through an interior of the first buttress assembly, the second buttress assembly and the buttress connector.

15. The MRI system of claim 14 , wherein the fluid conduit has a connector positioned near one or more disassembly points of the first buttress assembly and near one or more disassembly points of the second buttress assembly.

16. The MRI system of claim 12 , further comprising a power system, the power system including electrical conduit for providing electrical power to the first and second main MRI magnets.

17. The MRI system of claim 16 , wherein the electrical conduit extends from within the first MRI magnet housing to within the second MRI magnet housing by routing through an interior of at least one of the removably attached buttress assemblies.

18. The MRI system of claim 12 , wherein the first and second MRI magnet housings are substantially cylindrical such that a patient bed of the system extends through a center of the first and second MRI housings.

19. The MRI system of claim 12 , wherein the first buttress assembly extends radially from the outer surface of the first MRI magnet housing, and the second buttress assembly extends radially from the outer surface of the second MRI magnet housing.

20. The MRI system of claim 12 , further comprising a gantry positioned in the MRI magnet gap and a radiation therapy device supported by the gantry.

Assignees

• Viewray Incorporated
• Viewray Tech Inc

Inventors

• Dempsey James F
• Patrick John L
• Shvartsman Shmaryu M
• Demeester Gordon D

Classifications

• G01R33/3802 Primary

  Manufacture or installation of magnet assemblies; Additional hardware for transportation or installation of the magnet assembly or for providing mechanical support to components of the magnet assembly · CPC title

• G01R33/3806 Primary

  Open magnet assemblies for improved access to the sample, e.g. C-type or U-type magnets · CPC title

• A61N5/1049

  for verifying the position of the patient with respect to the radiation beam · CPC title

• A61B5/055 Primary

  involving electronic [EMR] or nuclear [NMR] magnetic resonance, e.g. magnetic resonance imaging · CPC title

• A61N2005/1055

  using magnetic resonance imaging [MRI] · CPC title