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FLUIDLESS PASSIVE COOLING FOR MRI SYSTEM

IP.com Disclosure Number: IPCOM000197944D
Publication Date: 2010-Jul-23
Document File: 5 page(s) / 71K

Publishing Venue

The IP.com Prior Art Database

Abstract

A technique relating to a Magnetic Resonance Imaging (MRI) System utilizing fluid-less passive cooling is disclosed. This technique proposes utilization of a heat pipe or thermosyphon to enhance cooling for an MRI machine. Such an enhanced system cooling system enables a more compact lightweight device.

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RP13445

BRIEF ABSTRACT

    A technique relating to a Magnetic Resonance Imaging (MRI) System utilizing fluid-less passive cooling is disclosed. This technique proposes utilization of a heat pipe or thermosyphon to enhance cooling for an MRI machine. Such an enhanced system cooling system enables a more compact lightweight device.

KEYWORDS

    Magnetic Resonance Imaging (MRI), thermal cooling system, heat pipe, thermosyphon, thermal conductivity, weight, circulate, cooling fluid.

DETAILED DESCRIPTION

    Magnetic Resonance Imaging (MRI) equipment is generally quite heavy and not portable. One contributor to the weight of MRI machines is thermal cooling system of the MRI. The thermal cooling system typically includes a chiller which further increases the weight of the MRI machine.

    Conventional techniques utilized in MRI cooling systems use milli-channel size forced water-cooling. In such a technique water is circulated inside a bank of tubes to cool the gradient. Such cooling techniques pose significant weight problems. In addition, circulating coolant in an electrical system brings significant

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FLUIDLESS PASSIVE COOLING FOR MRI SYSTEM

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RP13445

challenges. An alternative conventional cooling system includes a liquid cooling system with serpentine copper tube cooling.

    Hence there is a need in the art for a technique which significantly and effectively reduces the weight of the cooling system an MRI system.

    In the present technique, highly effective thermal conductivity heat pipes are used to move the heat from a gradient to a lightweight external air-cooled heat exchanger. According to the present technique, the weight of the plumbing system of the MRI system is reduced since it is replaced with heat pipes while a conventional chiller is replaced with an air cooled heat sink.

    Generally, a heat pipe is a two-phase device with an extremely high effective thermal conductivity that uses thermodynamic forces developed between the evaporator and the condenser combined with the interfacial capillary force developed inside its wicked evaporator to circulate a working fluid through the heat pipe. Heat pipes efficiently transport heat that is generated by a highly localized concentrated heat source and discharge this heat to a convenient sink.

    The present technique utilizes a heat pipe or thermosyphon to enhance a cooling system for an MRI machine. Such an enhanced cooling system enables a more compact lightweight MRI device. A unique heat pipe arrangement called a fishbone/ribcage arrangement is utilized. Figure 1 illustrates a three dimensional schematic of the fishbone arrangement cooling system with external cooling. Such fishbone arrangement assures that the he...