MRI thermo-isolating jacket

• US 10,132,887 B2
• Filed: 02/16/2015
• Issued: 11/20/2018
• Est. Priority Date: 03/09/2014
• Status: Active Grant

• Current Assignee: Aspect Imaging Ltd.
• Original Assignee: Aspect Imaging Ltd.
• Inventors: Rapoport, Uri
• Primary Examiner(s): Hoque, Farhana
• Application Number:
  US14/623,039
• Publication Number:
  US 20150253400A1
• Time in Patent Office: 1,373 Days
• Field of Search: 324239, 324318
• CPC Class Codes: G01R 33/3804 Additional hardware for cooling or heating of the magnet assembly, for housing a cooled or heated part of the magnet assembly or for temperature control of the magnet assembly
• CPC Class Codes: G01R 33/422 of the radio frequency field
• CPC Class Codes: Y10T 29/49826 Assembling or joining

Abstract

A thermo-isolating jacket for a magnetic resonance device (MRD). The thermo-isolating jacket is configured to be positioned in an atmospheric pressure, temperature changing environment. The thermo-isolating jacket provides a passive temperature insulating device to be placed on the outer side of the MRD. The thermo-isolating jacket insulates the MRD from external environment temperature fluctuations during its operation.

Claims

1. A thermal isolating jacket for a magnetic resonance device (MRD), configured to be positioned in an atmospheric pressure system, temperature changing environment, having at least one first temperature T₁ [°

C.] and a Q [kj] amount of heat applied to the same, in which;

a. an inner portion fitted by means of size and shape to the external dimensions of said MRD;

b. at least one second temperature T₂ [°

C.] in said inner portion;

c. a specific mass, m [kg]; and

,

d. specific heat capacity, C_p [kj/kg];

wherein the following formula is being held true;

Q=C_pmdT;

where dT=T₁−

T₂,

wherein for each applied Q, dT2 is in the range of 0°

C.-0.2°

C.;

where dT₂=T₂+dT.

2. The thermal isolating jacket according to claim 1, wherein at least a portion of said jacket comprising n layers.

3. The thermal isolating jacket according to claim 2, wherein at least 2 of said n layers comprising a substantially different specific heat capacity C_p for each layer;

where each of said layers has at least one first temperature H₁ [°

C.] measured on the outer side of said layer, and at least one first temperature H₂ [°

C.], measured on its inner side towards said MRD, having a dH₁−

. . . dHn, where dT of thermo isolating jacket equals H₁−

Hn.

4. The thermo isolating jacket according to claim 1, wherein said jacket comprising at least one opening to permit access to said MRD.

5. The thermo isolating jacket according to claim 1, wherein at least a portion of said thermo isolating jacket comprising a material selected from a group consisting of:

thermo insulating material, sealing material, foam material, fire retardant materials, at least partially transparent material and any combination thereof.

6. The thermo isolating jacket according to claim 1, wherein at least a portion of said thermo isolating jacket comprises means for shielding at least a portion of said MRD from a selected from a group consisting of:

magnetism, electromagnetic interference, physical damage and any combination thereof.

7. A method for thermo-regulating an magnetic resonance device (MRD), configured to be positioned in an atmospheric pressure system and temperature changing environment, having at least one first temperature T₁ [°

C.] and a Q [kj] amount of heat applied to the same, comprising steps of;

a. obtaining a thermal isolating jacket for an MRD, in which i. an inner portion fitted by means of size and shape to the external dimensions of said MRD;

ii. at least one second temperature T₂ [°

C.] in said inner portion;

iii. a specific mass, m [kg]; and

iv. specific heat capacity, C_p [kj/kg]; and

,

b. operating the same;

wherein said step of obtaining said thermal isolating jacket such that the following formula is held true;

Q=C_pmdT;

where dT=T₁−

T₂,

wherein for each applied Q, dT2 is in the range of 0°

C.-0.2°

C.;

where dT₂=T₂+dT.