CN114203054B

CN114203054B - Facing display device and system compatible with magnetic resonance imaging

Info

Publication number: CN114203054B
Application number: CN202210068652.3A
Authority: CN
Inventors: 龚启勇; 幸浩洋; 黄晓琦; 吕粟
Original assignee: Sichuan University
Current assignee: Sichuan University
Priority date: 2022-01-20
Filing date: 2022-01-20
Publication date: 2023-06-27
Anticipated expiration: 2042-01-20
Also published as: CN114203054A

Abstract

The invention discloses a facing display device and a facing display system compatible with magnetic resonance imaging, which solve the technical problem that a visual stimulus mode of the existing functional magnetic resonance imaging has blurring or distortion of pictures. A magnetic resonance imaging compatible face-to-face display device comprising: a nuclear magnetic shielding box which is integrally made of a material capable of realizing nuclear magnetic shielding inside and outside a box body of the nuclear magnetic shielding box and magnetic property does not influence magnetic resonance imaging, and is provided with a display mounting groove and a transparent front cover positioned at the bottom of the display mounting groove; and a display for being mounted in the display mounting groove and having a display screen facing the front cover side when the display is mounted on the display mounting groove so that contents emitted from the display screen are displayed to a subject through the front cover. When in use, the display screen is arranged in a channel of the magnetic resonance imaging equipment, the display screen faces the eyes of the tested person, and the tested person can observe clearer and more accurate pictures or images.

Description

Facing display device and system compatible with magnetic resonance imaging

Technical Field

Embodiments of the present application relate to a magnetic resonance imaging compatible facing display device and system.

Background

Traditional functional magnetic resonance imaging (fMRI) applied in the field of clinical imaging is task state imaging with visual stimuli (allowing the subject to see some cognitive or emotional pictures at some point in time). fMRI is greatly limited by whether the subject looks at or has seen the test picture, and therefore the results are highly subjective. In addition, the conventional visual stimulation mode of functional magnetic resonance imaging is to map the picture outside a magnet cavity (channel) of the magnetic resonance imaging device and then project the picture to a tested person through a reflector group, so that the picture is easy to blur or distort.

On the other hand, in the field of treating mental diseases by means of nerve regulation, brain function intervention regulation can be performed by generating physical fields (such as magnetic fields, currents, ultrasound and the like) through electromagnetic equipment, but the methods belong to positioning treatment, that is, brain targets acted by the physical fields are predetermined. However, the individual differences of human brain functions are very different, and the above brain function intervention regulation means are difficult to realize individual accurate medical treatment.

Disclosure of Invention

The embodiment of the application aims to provide a facing display device and a facing display system compatible with magnetic resonance imaging, and solves the technical problem that a visual stimulus mode of the existing functional magnetic resonance imaging has blurring or distortion of pictures.

According to a first aspect of the present application, there is provided a magnetic resonance imaging compatible facing display device. Comprising the following steps: a nuclear magnetic shielding box which is integrally made of a material capable of realizing nuclear magnetic shielding inside and outside a box body of the nuclear magnetic shielding box and magnetic property does not influence magnetic resonance imaging, and is provided with a display mounting groove and a transparent front cover positioned at the bottom of the display mounting groove; and a display for being mounted in the display mounting groove and having a display screen facing the front cover side when the display is mounted on the display mounting groove so that contents emitted from the display screen are displayed to a subject through the front cover.

Alternatively, the display is a display that receives an optical signal and then converts the optical signal into an electrical signal that is an input signal to the display screen.

Optionally, the display includes a ROSA-HDMI sub-module, an HDMI-MIPI sub-module, an MCU sub-module and an AMOLED display screen sub-module, where the ROSA-HDMI sub-module is connected with the HDMI-MIPI sub-module through an HDMI interface, the HDMI-MIPI sub-module is connected with the AMOLED display screen sub-module through an MIPI interface, the HDMI-MIPI sub-module is in communication connection with the MCU sub-module, and the display screen is the display screen of the AMOLED display screen sub-module.

Optionally, the nuclear magnetic shielding box comprises a frame and a rear cover, and the front cover and the rear cover are respectively installed on the front side and the rear side of the frame. Optionally, a conductive rubber sealing element is arranged on the assembly surface between the frame and the rear cover.

Optionally, the frame and the rear cover are respectively formed by injection molding, and the surfaces of the frame and the rear cover are respectively provided with a first adhesion layer formed by a first material which is conductive and magnetic and does not influence magnetic resonance imaging. Optionally, the first material is copper conductive paint.

Optionally, the frame is connected with the rear cover through a screw which is conductive and magnetic and does not influence magnetic resonance imaging. Optionally, the screw is a copper screw. Optionally, an electrically conductive rubber seal is provided on the assembly surface between the screw and the rear cover.

Optionally, the front cover comprises a transparent base layer and a second adhesion layer formed by a second material which is conductive and magnetic and does not influence magnetic resonance imaging and is arranged on the surface of the transparent base layer. Optionally, the transparent base layer is made of silicon-boron-based glass. Optionally, the second material is indium tin oxide. Optionally, the second material is disposed on the surface of the transparent base layer by magnetron sputtering.

Optionally, the transparent front cover is adhered to the frame by a third material which is conductive and magnetic and does not affect magnetic resonance imaging. Optionally, the third material is copper carbon-based conductive epoxy glue.

Optionally, the nuclear magnetic shielding box comprises a cable connection structure, wherein the cable connection structure is used for being connected with a transmission cable in an adaptive manner in a nuclear magnetic leakage prevention mode, and the transmission cable is used for providing signals required for display for the display.

Optionally, the cable connection structure includes the cable and wears the wall spare, the cable is worn the wall spare and is had the mount pad and be located cable on the mount pad wears the wall pipe, the mount pad attached install in the box body surface of nuclear magnetic shielding box, the cable wear the wall pipe through nuclear magnetic shielding layer with transmission cable parcel adaptation.

Optionally, the nuclear magnetic shielding layer adopts a copper woven mesh. Optionally, the mounting seat is connected with the surface of the nuclear magnetic shielding box body through a screw which is conductive and magnetic and does not affect magnetic resonance imaging. Optionally, the screw is a copper screw.

Optionally, the magnetic resonance imaging compatible face-to-face display apparatus of the first aspect further includes an optical viewer integrally made of a material that does not affect magnetic resonance imaging and having a light-in portion and a light-out portion and a light-conducting structure between the light-in portion and the light-out portion, the light-in portion being connected to the nuclear magnetic shielding case and aligned with the display screen and the light-out portion being aligned with the subject's eyes so as to guide the content, which is emitted from the display screen and displayed to the subject through the transparent front cover, into the field of view of the subject through the light-conducting structure.

Optionally, the light inlet portion, the light outlet portion and the light conducting structure form left and right different and independent observation channels, and the left and right different and independent observation channels respectively correspond to the left eye and the right eye of the tested person. Optionally, the optical viewer is a head-mounted optical viewer.

Optionally, the magnetic resonance imaging compatible face-to-face display device of the first aspect further includes a transition connection block made of a material whose magnetism does not affect magnetic resonance imaging, the transition connection block being connected between the nuclear magnetic shielding box and the optical viewer and having a first side-submerged groove for accommodating adaptation of the nuclear magnetic shielding box and a second side-submerged groove for accommodating adaptation of the light inlet portion, and when the nuclear magnetic shielding box accommodates adaptation of the first side-submerged groove and the light inlet portion accommodates adaptation of the second side-submerged groove, an outer edge of the transition connection block protrudes from an outer edge of the transition connection block and the light inlet portion. Optionally, the transition connection block is made of plastic.

Optionally, the side top of nuclear magnetic shielding box is equipped with the flange, works as the nuclear magnetic shielding box holds the adaptation in after the first side sunk groove this flange with the terminal surface contact that corresponds of transition connecting block, the flange with be equipped with corresponding through-hole and screw hole on the terminal surface respectively, through the bolted connection that magnetism did not influence magnetic resonance imaging between this through-hole and the screw hole. Optionally, the bolt is a plastic bolt.

Optionally, a clamping groove is formed in the outer edge of the light inlet portion, a buckle is arranged at the edge of the second side sunk groove of the transition connecting block, and the buckle is in clamping fit with the clamping groove after the light inlet portion is accommodated and adapted to the second side sunk groove.

According to a second aspect of the present application there is provided a magnetic resonance imaging compatible face-to-face display system comprising: the frame comprises a frame bottom, a frame top and a frame side, wherein the frame bottom is used for being positioned beside the head bottom support, the frame top is positioned above the frame bottom, the frame side is connected between the frame bottom and the frame top, the frame bottom, the frame top and the frame side define a head accommodating area, a shoulder placing area is arranged outside one end of the head accommodating area, and a stimulation equipment installing area is arranged on the frame top; the head magnetic resonance radio frequency coil comprises a flexible wearable base and a radio frequency coil arranged in the flexible wearable base, and a sight hole is further formed in the head magnetic resonance radio frequency coil, and when the head magnetic resonance radio frequency coil is worn on the head of a tested person, the sight hole provides a channel for the tested person to observe; the stimulation device is arranged in the stimulation device installation area, the stimulation device is a face-type stimulation device, the face-type stimulation device adopts the face-type display device compatible with magnetic resonance imaging in the first aspect, and the display screen emits the content which is displayed to the tested person through the transparent front cover and acts on the tested person through the channel.

The facing display equipment and the system compatible with the magnetic resonance imaging are arranged in the channel of the magnetic resonance imaging equipment when in use, the display screen faces the eyes of the tested person, and the tested person can observe clearer and more accurate pictures or images.

The present application is further described below with reference to the drawings and detailed description. Additional aspects and advantages of the application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the application.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention. In the drawings:

fig. 1 is a schematic structural diagram of a system for magnetic resonance imaging according to an embodiment of the present application.

Fig. 2 is a schematic view of the product of fig. 1 at another angle.

Fig. 3 is a schematic structural diagram of a magnetic resonance radio frequency coil for a head according to an embodiment of the present application.

Fig. 4 is a schematic view of the product of fig. 3 in a perspective state.

Fig. 5 is a schematic diagram of an facing display device compatible with magnetic resonance imaging according to an embodiment of the present application.

Fig. 6 is an exploded view of the apparatus shown in fig. 5.

Fig. 7 is an exploded view of the nuclear magnetic shield cartridge in the apparatus shown in fig. 5.

Fig. 8 is a schematic diagram of the constituent modules of the display of the apparatus shown in fig. 5.

Detailed Description

The present application will now be described more fully hereinafter with reference to the accompanying drawings. Those of ordinary skill in the art will be able to implement the present solution based on these descriptions. Before describing the present application with reference to the accompanying drawings, it should be noted in particular that:

the technical solutions and technical features provided in the respective sections including the following description in the present specification may be combined with each other without conflict.

The matter set forth in the following description will generally be presented to illustrate only some, but not all embodiments of the application and, accordingly, will be apparent to those of ordinary skill in the art from consideration of the specification and practice of the invention.

The terms "comprising," "including," "having," and any variations thereof, in the present specification and claims, and in the related sections, are intended to cover a non-exclusive inclusion.

Fig. 1 is a schematic structural diagram of a system for magnetic resonance imaging according to an embodiment of the present application. Fig. 2 is a schematic view of the product of fig. 1 at another angle. Fig. 3 is a schematic structural diagram of a magnetic resonance radio frequency coil for a head according to an embodiment of the present application. Fig. 4 is a schematic view of the product of fig. 3 in a perspective state. As shown in fig. 1-4, a system for magnetic resonance imaging, comprising: a frame 10, a head magnetic resonance radio frequency coil 20 and a stimulation device 30. Wherein the frame 10 comprises a frame bottom 11 for positioning beside a head rest (i.e. headrest, which is part of the existing magnetic resonance imaging apparatus), a frame top 12 above the frame bottom 11, and a frame side 13 connected between the frame bottom 11 and the frame top 12, the frame bottom 11, the frame top 12, and the frame side 13 defining a head receiving area 14, one end of the head receiving area 14 being open outside of a shoulder placement area 15 of the subject 40 and the other end being open to form a first stimulation apparatus mounting area 16, the frame top 12 being provided with a second stimulation apparatus mounting area 17; the head magnetic resonance rf coil 20 comprises a flexible wearable base 21 (which may be made of EVA material, i.e. ethylene-vinyl acetate copolymer material) and an rf coil 22 disposed in the flexible wearable base 21, wherein the head magnetic resonance rf coil 20 is further provided with a viewing hole 23 and an equipment abdication area 24, respectively, when the head magnetic resonance rf coil 20 is worn on the head of the subject 40, the equipment abdication area 24 provides a first channel exposing a specific portion of the head of the subject 40, and the viewing hole 23 provides a second channel for the subject to observe; the stimulation device 30 comprises a first stimulation device 31 and a second stimulation device 32, the first stimulation device 31 and the second stimulation device 32 are respectively installed in the first device installation area 16 and the second device installation area 17 at the same time or in a time sharing mode, the first stimulation device 31 is an electromagnetic stimulation device and acts on the tested person 40 through the first channel, and the second stimulation device 32 is a visual stimulation device and acts on the tested person 40 through the second channel.

The first stimulation device may be at least one or more of transcranial magnetic stimulation Transcranial Magnetic Stimulation device (TMS device for short), transcranial direct current stimulation transcranial Direct Current Stimulation device (Tdcs device for short) and focused ultrasound interventional therapy MR guide Focused Ultrasound device (MRgFUS device for short) under magnetic resonance guidance. TMS devices, tdcs devices, and MRgFUS devices and VR devices are all prior art. Wherein, TMS equipment and Tdcs equipment both use pulse magnetic field or weak direct current to act on the brain, change the membrane potential of cortical nerve cells and further influence the metabolism and the nerve electrical activity in the brain, thereby causing a series of physiological and biochemical reactions. The TMS device generates an induced magnetic field by pulsed current in the coil, passes through the skull, generates a reverse induced current in the brain, and the current in the cortex can activate neurons and cause microscopic changes in axons, further causing changes in electrophysiology and function. the tDCS device functions by modulating the activity of spontaneous neuronal networks; at the neuronal level, the basic mechanism of regulating cortical excitability is to induce hyperpolarization or depolarization change of resting membrane potential according to the polarity of stimulation, and at the same time, the micro-environment of synapses can be regulated, such as changing the activity of NMDA receptors or GABA, so as to play a role in regulating synaptic plasticity. Along with the accumulation of clinical evidence, neural regulation technologies such as TMS equipment and Tdcs equipment have gradually evolved into regulation treatment means of diseases. The MRgFUS device is a newer non-ionizing radiation and non-invasive precise noninvasive regulation and control technology, and the intervention treatment mode utilizes the mechanical effect (the change of sound intensity and frequency) of ultrasonic waves to activate or inhibit nerve cells, and has the characteristics of precise positioning, small action area, high targeting, good multi-parameter regulation and control performance, capability of stimulating intracranial deep tissues and the like, the action range of focused ultrasound can be precisely up to a micron-sized pressure, and the intervention on deep parts of human brain tissues can be realized. Overall, MRgFUS devices can achieve more accurate and effective brain function intervention regulation than TMS devices or tDCS devices.

It has also been found from the above description that the TMS device and/or Tdcs device acts primarily on the superficial brain structures and the MRgFUS device acts primarily on the deep brain structures, and thus, when the first stimulation device comprises the TMS device and/or Tdcs device in combination with the MRgFUS device, a more comprehensive transcranial stimulation need may be met.

The main characteristics of the system structure for magnetic resonance imaging are as follows: the invention provides a head magnetic resonance radio frequency coil 20 which is wearable in nature, a sight hole 23 and a device yielding zone 24 are designed on the head magnetic resonance radio frequency coil 20, on the basis, a frame 10 is externally arranged on the head magnetic resonance radio frequency coil 20 and is used for providing a first stimulation device mounting zone 16 and a second stimulation device mounting zone 17, when the first stimulation device 31 and the second stimulation device 32 are simultaneously or time-sharing respectively arranged on the first device mounting zone 16 and the second device mounting zone 17, the first stimulation device 31 acts on a tested person 40 through the device yielding zone 24, and the second stimulation device 32 acts on the tested person 40 through the sight hole 23. The main advantage of the characteristics is that the whole system has extremely optimized utilization of space, and the occupied space of the whole system can be extremely small, so that the system can be directly added in the channel of the existing magnetic resonance imaging equipment.

As a preferred embodiment of the head mr rf coil 20, as shown in fig. 1-4, the head mr rf coil 20 is a band-shaped body when deployed and is worn on the head of the subject 40 in a cylindrical configuration wrapped around the head of the subject by being rolled along the long sides of the band-shaped body. In addition, the two ends of the length of the band may be provided with an adhesive structure 25 (such as a velcro) that can be adhered to each other and can adjust the inner diameter of the cylindrical structure by changing the adhesive position to thereby adjust the wearing tightness of the cylindrical structure. The cylindrical structure has an advantage in that the end thereof is opened to expose the entire head top of the subject 40, so that the first stimulation device 31 can cover both the head top of the subject 40 and the side surface and even the bottom surface of the head of the subject 40 from the gap between the head of the subject 40 and the cylindrical structure, which can be changed by adjusting the wearing tightness of the cylindrical structure.

In addition, as shown in fig. 3-4, the inner side of the head mr coil 20 is further provided with a convex-shaped face-conformable liner 26. The inner liner 26 can help the head mr coil 20 to be worn and positioned, so that a gap is reserved between the head mr coil 20 and the head of the subject 40 after being worn, and the wearing comfort of the head mr coil 20 is improved. The inner liner 26 may be made of a soft, skin friendly material. To make the design of the liner 26 more reasonable, the liner 26 may include an orbit fit portion 261, where the orbit fit portion 261 is provided with a groove 262 that is arranged along the orbit circumference, and the second channel is located in the groove 262; the recess 262 is preferably a flat annular recess that simultaneously covers both eyepieces. Optionally, the orbit fitting portion 261 has a bridge lateral support portion 264, and the bridge lateral support portion 264 has an arc structure with thin middle and thick ends in the thickness direction. Optionally, liner 26 further includes an orbital and forehead abutment 263; the forehead attaching part 263 is preferably provided obliquely so as to extend in both the forehead width direction and the forehead height direction.

The system for magnetic resonance imaging can be used for magnetic resonance imaging by combining brain function intervention regulation and control means for generating physical fields by electromagnetic stimulation equipment on the basis of traditional function magnetic resonance imaging. Therefore, the limitations of the traditional functional magnetic resonance imaging in visual stimulation can be broken through, and the brain functional intervention regulation means of the physical field generated by the electromagnetic stimulation equipment can be changed from a passive positioning treatment means to a functional magnetic resonance imaging stimulation means. Through fMRI scanning under electromagnetic stimulation, the mode of change of the nerve loop function of each individual can be revealed, and then an individualized functional target point is defined, so that individualized and accurate medical treatment of mental diseases is realized. The system for magnetic resonance imaging has simple and reasonable structural design, and can skillfully combine different stimulation devices on the basis of utilizing the existing magnetic resonance imaging device.

The second stimulation device 32 is, as mentioned above, a visual stimulation device. Obviously, the visual stimulus apparatus functions to provide a specific picture or image to the subject for observation. An improved visual stimulation device, which may be referred to as a magnetic resonance imaging compatible face-to-face display device in particular, will be provided below, which may be used as the second stimulation device 32 described above. Of course, the below-described compatible magnetic resonance imaging facing display device need not be limited to the above-described system for magnetic resonance imaging, and any magnetic resonance imaging system may employ such a compatible magnetic resonance imaging facing display device, if desired.

Fig. 5 is a schematic diagram of an facing display device compatible with magnetic resonance imaging according to an embodiment of the present application. Fig. 6 is an exploded view of the apparatus shown in fig. 5. Fig. 7 is an exploded view of the nuclear magnetic shield cartridge in the apparatus shown in fig. 5. Fig. 8 is a schematic diagram of the constituent modules of the display of the apparatus shown in fig. 5. As shown in fig. 5 to 8, the magnetic resonance imaging compatible face-up display apparatus includes a nuclear magnetic shield case 321 and a display 322, the nuclear magnetic shield case 321 being integrally made of a material capable of realizing nuclear magnetic shielding inside and outside a case body of the nuclear magnetic shield case 321 and magnetically not affecting magnetic resonance imaging and having a display mounting groove 321a and a transparent front cover 321b located at a bottom of the display mounting groove 321a, the display 322 being for mounting in the display mounting groove and a display screen 322a of the display 322 being directed to a side of the front cover 321b so that contents emitted from the display screen 322a are displayed to a subject through the front cover 321b when the display 322 is mounted on the display mounting groove. Since the above-described mri-compatible face-up display device is disposed in the channel of the mri apparatus when in use, the display screen 322a faces the eyes of the subject, so that the subject can observe clearer and more accurate pictures or images.

In addition, the above-mentioned facing display device compatible with magnetic resonance imaging may further include an optical viewer 323, which is integrally made of a material that does not affect magnetic resonance imaging by magnetism and has a light-entering portion 323a and a light-exiting portion 323b, and a light-conducting structure between the light-entering portion 323a and the light-exiting portion 323b, the light-exiting portion 323b being aligned with the eyes of the subject using the light-entering portion 323a to be connected to the nuclear magnetic shield box 324 and aligned with the display screen 322 so as to direct the content, which is emitted from the display screen 322 and displayed to the subject through the transparent front cover surface 321b, into the field of view of the subject through the light-conducting structure. The optical viewer 323 can be used to adjust the picture or image observed by the subject. For example, the light inlet portion 323a, the light outlet portion 323b and the light transmission structure form two different and independent observation channels, and the two different and independent observation channels respectively correspond to the left eye and the right eye of the tested person, so that the optical observer 323 can be used as virtual reality glasses, and the picture or the image observed by the tested person is more real. The light-conducting structure may comprise a lens or a lens group commonly used for virtual reality glasses. Furthermore, the optical viewer can also be designed as a head-mounted optical viewer.

In order to better realize the connection between the optical viewer 323 and the nuclear magnetic shielding box 324, the above-mentioned magnetic resonance imaging compatible facing display device may further include a transition connection block 324 made of a material that does not affect magnetic resonance imaging, where the transition connection block 324 is connected between the nuclear magnetic shielding box 321 and the optical viewer 323 and has a first side-submerged groove for accommodating the nuclear magnetic shielding box 321 and a second side-submerged groove for accommodating the light inlet portion 323a, and when the nuclear magnetic shielding box accommodates the first side-submerged groove and the light inlet portion accommodates the second side-submerged groove, an outer edge of the transition connection block 324 protrudes from an outer edge of the nuclear magnetic shielding box 321 and the light inlet portion 323 a. Since the nuclear magnetic shielding box is accommodated in the first side sunk groove and the light inlet is accommodated in the second side sunk groove, the optical viewer 323 and the nuclear magnetic shielding box 324 can be positioned through the transition connecting block 324, and the overall thickness of the facing display device compatible with magnetic resonance imaging is not increased significantly; since the outer edge of the transition connection block 324 protrudes from the outer edges of the nuclear magnetic shield 321 and the light inlet 323a, the transition connection block 324 can also protect the nuclear magnetic shield 321 and the light inlet 323 a. Optionally, the transitional coupling block 324 is made of plastic to reduce the weight of the transitional coupling block 324.

In order to fix the transition connecting block 324 and the nuclear magnetic shielding box 321, a flange 321g may be disposed above a side of the nuclear magnetic shielding box 321, after the nuclear magnetic shielding box is accommodated and adapted in the first side sinking groove, the flange 321g is in contact with a corresponding end face of the transition connecting block, and a corresponding through hole and a threaded hole are respectively formed in the flange 321g and the end face, and the through hole and the threaded hole are connected through a bolt 321h (which may be a plastic bolt) that does not affect magnetic resonance imaging through magnetism. In addition, a clamping groove 323c may be further disposed on the outer edge of the light inlet portion 323a, and a buckle (not shown in the drawing) may be disposed on the edge of the second side sunk groove of the transition connection block, where the buckle is in clamping fit with the clamping groove after the light inlet portion 323a is accommodated and adapted to the second side sunk groove.

As shown in fig. 7, the magnetic shielding case 321 specifically further includes a frame 321c and a rear cover 321d, where the front cover 321b and the rear cover 321d are respectively mounted on front and rear sides of the frame 321c, and the frame 321c and the rear cover 321d may be respectively formed by injection molding and a first adhesion layer formed by a first material that is conductive and magnetic and does not affect magnetic resonance imaging, and the first material may be a copper conductive paint, so that the magnetic shielding effect of the frame 321c and the rear cover 321d can be ensured, and the weight of the magnetic shielding case 321 can be reduced. The frame 321c and the back cover 321d may be further connected by a screw 321j (e.g. a copper screw) that is electrically conductive and magnetic and does not affect the magnetic resonance imaging, and in addition, an electrically conductive rubber seal 321i may be disposed on an assembling surface between the frame 321c and the back cover 321d and/or an assembling surface between the screw 321j and the back cover 321d, so as to better prevent leakage of nuclear magnetism.

The front cover 321b may specifically include a transparent base layer and a second adhesion layer disposed on the surface of the transparent base layer and formed of a second material that is electrically conductive and magnetic and does not affect magnetic resonance imaging, where the transparent base layer may be a silicon-boron-based sheet glass, the second material may be indium tin oxide, and the second material may be disposed on the surface of the transparent base layer by magnetron sputtering. The front cover 321b may also be adhered to the frame by a third material that is conductive and magnetic and does not affect magnetic resonance imaging, and the third material may be a copper carbon-based conductive epoxy adhesive.

In addition, the nuclear magnetic shielding case 321 further comprises a cable connection structure, wherein the cable connection structure is used for being adaptively connected with a transmission cable in a nuclear magnetic leakage prevention manner, and the transmission cable is used for providing signals required for display to the display 322. Specifically, the cable connection structure comprises a cable wall penetrating member 321e, the cable wall penetrating member 321e is provided with an installation seat 321k and a cable wall penetrating guide pipe 321l located on the installation seat 321k, the installation seat 321k is attached to the surface of the box body of the nuclear magnetic shielding box, the cable wall penetrating guide pipe 321l is matched with the transmission cable in a wrapping mode through a nuclear magnetic shielding layer, and the nuclear magnetic shielding layer is specifically made of a copper woven net 321f. The mounting seat 321k and the box body surface of the nuclear magnetic shielding box can be connected by a screw which is conductive and magnetic and does not affect magnetic resonance imaging, and the screw can be a copper screw.

As shown in fig. 8, the display 322 may be a display that receives an optical signal and then converts the optical signal into an electrical signal that is an input signal to the display screen. Specifically, the display includes a ROSA-HDMI sub-module 322b, an HDMI-MIPI sub-module 322c, an MCU sub-module 322d, and an AMOLED display sub-module 322a, where the ROSA-HDMI sub-module is connected to the HDMI-MIPI sub-module through an HDMI interface, the HDMI-MIPI sub-module is connected to the AMOLED display sub-module through an MIPI interface, and the HDMI-MIPI sub-module is in communication connection with the MCU sub-module, and the display is the display of the AMOLED display sub-module. An electrical signal of a High Definition Multimedia Interface (HDMI) signal of a signal input module outside the display 322 is converted into an optical signal by an optical transmitter module (TOSA) and transmitted to a ROSA-HDMI sub-module 322b in the display main body by an optical fiber; the ROSA-HDMI sub-module converts the optical signal transmitted by the signal input module into an electric signal of the high-definition multimedia interface through an optical receiving module (ROSA), and transmits the electric signal to the HDMI-MIPI sub-module through the high-definition multimedia interface; the HDMI-MIPI sub-module converts the high-definition multimedia interface signal into a MIPI interface signal, is connected with the AMOLED display screen sub-module through a MIPI interface, is communicated with the MCU sub-module 322d through an I2C communication interface, and notifies the MCU sub-module 322d through INT state conversion; the MCU submodule is responsible for processing data of each module and controlling each module; the AMOLED display screen submodule consists of an AMOLED screen and a screen PFC driving circuit, and the screen PFC driving circuit is used for completing display of the AMOLED screen by power factor correction of MIPI interface signals. The display is powered by a power supply module which converts Alternating Current (AC) into Direct Current (DC) and supplies the Direct Current (DC) to the display main body and the MCU sub-module and the HDMI-MIPI sub-module respectively.

One of ordinary skill in the art will be able to implement embodiments of the present application based on the above description. Based on the foregoing provided herein, all other embodiments that would be apparent to one of ordinary skill in the art without making any inventive effort are intended to be within the scope of this application.

Claims

1. A magnetic resonance imaging compatible face-to-face display system, comprising:

a frame comprising a frame bottom for positioning beside the head mount, a frame top above the frame bottom, and a frame side connected between the frame bottom and the frame top, the frame bottom, the frame top, and the frame side defining a head receiving area having one open end outside of which is a shoulder placement area and the other open end forming a first stimulation device mounting area, the frame top having a second stimulation device mounting area disposed thereon;

the head magnetic resonance radio frequency coil comprises a flexible wearable base and a radio frequency coil arranged in the flexible wearable base, the head magnetic resonance radio frequency coil is also respectively provided with a sight hole and an equipment abdication area, when the head magnetic resonance radio frequency coil is worn on the head of a tested person, the equipment abdication area provides a first channel for exposing a specific part of the head of the tested person, and the sight hole provides a second channel for the tested person to observe facing the tested person;

the stimulation device comprises a first stimulation device and a second stimulation device, the first stimulation device and the second stimulation device are respectively arranged in the first stimulation device installation area and the second stimulation device installation area at the same time or in a time-sharing mode, the first stimulation device is electromagnetic stimulation device and acts on a tested person through the first channel, and the second stimulation device is visual stimulation device and acts on the tested person through the second channel;

the visual stimulation device adopts a compatible magnetic resonance imaging facing display device, and the compatible magnetic resonance imaging facing display device specifically comprises:

a nuclear magnetic shielding box which is integrally made of a material capable of realizing nuclear magnetic shielding inside and outside a box body of the nuclear magnetic shielding box and magnetic property does not influence magnetic resonance imaging, and is provided with a display mounting groove and a transparent front cover positioned at the bottom of the display mounting groove;

a display for being mounted in the display mounting groove and having a display screen facing the front cover side when the display is mounted on the display mounting groove so that contents emitted from the display screen are displayed to a subject through the front cover;

an optical observer which is integrally made of a material which does not affect magnetic resonance imaging by magnetism and has a light inlet portion and a light outlet portion and a light conduction structure between the light inlet portion and the light outlet portion, wherein the light inlet portion is connected with the nuclear magnetic shielding box and is aligned with the display screen, and the light outlet portion is aligned with the eyes of a tested person so as to guide the content which is emitted from the display screen and displayed to the tested person through the transparent front cover into the field of view of the tested person through the light conduction structure;

the transition connecting block is made of a material with magnetism not influencing magnetic resonance imaging, is connected between the nuclear magnetic shielding box and the optical observer, is provided with a first side sunk groove for accommodating and adapting the nuclear magnetic shielding box and a second side sunk groove for accommodating and adapting the light inlet part, and when the nuclear magnetic shielding box is accommodated and adapted to the first side sunk groove and the light inlet part is accommodated and adapted to the second side sunk groove, the outer edge of the transition connecting block protrudes out of the outer edge of the nuclear magnetic shielding box and the light inlet part.

2. A magnetic resonance imaging compatible face-up display system as claimed in claim 1, wherein: the display is a display that receives an optical signal and then converts the optical signal into an electrical signal that is an input signal to the display screen.

3. A magnetic resonance imaging compatible face-up display system as claimed in claim 2, wherein: the display comprises a ROSA-HDMI sub-module, an HDMI-MIPI sub-module, an MCU sub-module and an AMOLED display screen sub-module, wherein the ROSA-HDMI sub-module is connected with the HDMI-MIPI sub-module through an HDMI interface, the HDMI-MIPI sub-module is connected with the AMOLED display screen sub-module through an MIPI interface, the HDMI-MIPI sub-module is in communication connection with the MCU sub-module, and the display screen is the display screen of the AMOLED display screen sub-module.

4. A magnetic resonance imaging compatible face-up display system as claimed in claim 1, wherein: the nuclear magnetic shielding box comprises a frame and a rear cover, wherein the front cover and the rear cover are respectively arranged on the front side and the rear side of the frame.

5. A magnetic resonance imaging compatible face-up display system as set forth in claim 4, wherein: the frame and the rear cover are respectively formed by injection molding, and the surfaces of the frame and the rear cover are respectively provided with a first adhesion layer formed by a first material which is conductive and magnetic and does not influence magnetic resonance imaging.

6. A magnetic resonance imaging compatible face-up display system as set forth in claim 5, wherein: the first material is copper conductive paint.

7. A magnetic resonance imaging compatible face-up display system as set forth in claim 4, wherein: the frame and the rear cover are connected through screws which are conductive and magnetic and do not affect magnetic resonance imaging.

8. A magnetic resonance imaging compatible face-up display system as set forth in claim 7, wherein: the screw is a copper screw.

9. A magnetic resonance imaging compatible face-up display system as set forth in claim 7, wherein: and a conductive rubber sealing piece is arranged on the assembly surface between the frame and the rear cover and/or the assembly surface between the screw and the rear cover.

10. A magnetic resonance imaging compatible face-up display system as claimed in claim 1, wherein: the front cover comprises a transparent base layer and a second adhesion layer which is arranged on the surface of the transparent base layer and is formed by a second material which is conductive and magnetic and does not influence magnetic resonance imaging.

11. The magnetic resonance imaging compatible face-up display system of claim 10, wherein: the transparent base layer adopts silicon boron base sheet glass.

12. The magnetic resonance imaging compatible face-up display system of claim 10, wherein: the second material is indium tin oxide.

13. The magnetic resonance imaging compatible face-up display system of claim 10, wherein: the second material is arranged on the surface of the transparent base layer through magnetron sputtering.

14. A magnetic resonance imaging compatible face-up display system as claimed in claim 1, wherein: the front cover is adhered to the frame through a third material which is conductive and magnetic and does not influence magnetic resonance imaging.

15. The magnetic resonance imaging compatible face-up display system of claim 14, wherein: the third material is copper carbon-based conductive epoxy glue.

16. A magnetic resonance imaging compatible face-up display system as claimed in claim 1, wherein: the nuclear magnetic shielding box comprises a cable connection structure, wherein the cable connection structure is used for being connected with a transmission cable in an adaptive manner in a nuclear magnetic leakage prevention mode, and the transmission cable is used for providing signals required for display for the display.

17. The magnetic resonance imaging compatible face-up display system of claim 16, wherein: the cable connection structure comprises a cable wall penetrating piece, the cable wall penetrating piece is provided with a mounting seat and a cable wall penetrating guide pipe located on the mounting seat, the mounting seat is attached to the surface of the box body of the nuclear magnetic shielding box, and the cable wall penetrating guide pipe is matched with the transmission cable in a wrapping mode through the nuclear magnetic shielding layer.

18. The magnetic resonance imaging compatible face-up display system of claim 17, wherein: the nuclear magnetic shielding layer adopts a copper woven mesh.

19. The magnetic resonance imaging compatible face-up display system of claim 17, wherein: the mounting seat is connected with the surface of the nuclear magnetic shielding box body through screws which are conductive and magnetic and do not influence magnetic resonance imaging.

20. The magnetic resonance imaging compatible face-up display system of claim 19, wherein: the screw is a copper screw.

21. A magnetic resonance imaging compatible face-up display system as claimed in claim 1, wherein: the light inlet part, the light outlet part and the light conduction structure form left and right different and mutually independent observation channels, and the left and right different and mutually independent observation channels respectively correspond to the left eye and the right eye of the tested person.

22. A magnetic resonance imaging compatible face-up display system as claimed in claim 1, wherein: the optical viewer is a head-mounted optical viewer.

23. A magnetic resonance imaging compatible face-up display system as claimed in claim 1, wherein: the transition connecting block is made of plastic.

24. A magnetic resonance imaging compatible face-up display system as claimed in claim 1, wherein: the nuclear magnetic shielding box comprises a transition connecting block, and is characterized in that a flange is arranged above the side of the nuclear magnetic shielding box, the flange is in contact with the corresponding end face of the transition connecting block after being accommodated in the sunk groove of the first side, the flange and the end face are respectively provided with a corresponding through hole and a threaded hole, and the through holes and the threaded holes are connected through bolts which do not affect magnetic resonance imaging through magnetism.

25. The magnetic resonance imaging compatible face-up display system of claim 24, wherein: the bolt is a plastic bolt.

26. A magnetic resonance imaging compatible face-up display system as claimed in claim 1, wherein: the outer fringe of advance optical portion is equipped with the draw-in groove, the edge of transition connecting block's second side sunk type recess is equipped with the buckle, works as advance optical portion hold the adaptation in after the second side sunk type recess this buckle and draw-in groove joint adaptation.