JPH0534643Y2 - - Google Patents

Description

[Detailed description of the invention] A. Industrial application field This invention relates to a nuclear magnetic resonance tomography device.
In particular, it concerns lighting within the dome of the gantry.

B. Prior Art The dome of the gantry in nuclear magnetic resonance tomography equipment is made as small in diameter as possible to increase imaging sensitivity, and the dome is also quite long, making it difficult for outside light to enter the dome. It's getting dark. Furthermore, if a lighting device connected to an electrical cord is installed inside the dome, noise called artifacts will occur in the tomographic image, so general lighting equipment cannot be installed inside the gantry.

C. Problems to be solved by the invention Therefore, subjects who are placed in a dark and narrow dome lying on their backs on the movable top of a bed are likely to feel psychologically pressured and feel anxious. Moreover, since this type of photography requires a relatively long time, it also increases the sense of boredom.

This idea was devised in view of these circumstances, and is based on a nuclear magnetic field that allows the subjects inside the dome to undergo the imaging process comfortably without giving them a sense of mental pressure or boredom. The purpose of the present invention is to provide a resonance tomography device.

D. Means for solving the problem In order to achieve the above object, this invention has the following configuration.

That is, the nuclear magnetic resonance tomography apparatus according to this invention includes a light-emitting panel made of an optical fiber sheet that is curved to follow the dome shape and is arranged in the upper part of the dome of the gantry and emits light in an arbitrary pattern; It is characterized by being equipped with an optical fiber cable that connects the panel and a light source outside the gantry.

E Effect According to this invention, light emitted from a light source outside the gantry enters the light-emitting panel through an optical fiber cable, and the light-emitting panel emits light, creating a preset pattern such as pictures or letters on the panel surface. appears, and the inside of the dome becomes brighter. Furthermore, since the light emitting panel and the fiber optic cable that transmits light thereto do not disturb the magnetic field within the gantry, no artifacts will occur in the captured image.

In addition, the light-emitting panel is curved and placed above the dome of the gantry to follow the shape of the dome, so it does not give a feeling of pressure to the patient, and it is easy to insert and remove the top plate into and out of the dome. without interfering with
The inside of the dome can be used to advantage.

F. Embodiment Hereinafter, embodiments of this invention will be described in detail based on the drawings.

FIRST EMBODIMENT FIGS. 1 to 3 relate to the first embodiment of this invention, in which FIG. 1 is a schematic longitudinal sectional side view of a nuclear magnetic resonance tomography apparatus, FIG. 2 is a perspective view thereof, and FIG. is a perspective view of the main part configuration.

The nuclear magnetic resonance tomography apparatus is configured such that a subject 5 lying supine is inserted into a movable top plate 4 of a bed 3 from one end of a dome 2 formed at the center of a gantry 1.

A light emitting panel 6 made of an optical fiber sheet is attached to the ceiling of the dome 2.
As shown in FIGS. 3 and 4, this light emitting panel 6 is made of a resin panel sheet with an arbitrary pattern such as a picture or text attached to the front surface of an optical fiber sheet 7 configured to emit light from the side. 8. It has a structure in which a resin reflective sheet 9 is attached to the rear surface, and a ribbon-shaped optical fiber cable 10 extending from the optical fiber sheet 7 to both ends of the panel is connected to a light source 11 placed outside the gantry 1. has been done.

Further, the light emitting panel 6 is attached to an arbitrary position on the ceiling surface of the dome 2 with a suction cup or adhesive tape in a curved manner along the shape of the ceiling surface of the dome 2,
The mounting position can be changed depending on the position of the subject, and the light emitting panel 6 can be replaced with a light emitting panel 6 having a different light emitting pattern.

Second Example Next, a second example will be described based on FIGS. 5 to 7.

FIG. 5 is a longitudinal sectional side view of the whole, FIG. 6 is a perspective view of the main part, and FIG. 7 is a front view of the main part.

In this embodiment, the light emitting panel 6 is configured to be able to move back and forth together with the subject 5.

That is, an arch member 12 made of transparent resin and curved to follow the shape of the ceiling surface of the dome is attached near the front end of the movable top plate 4.
The light emitting panel 6 is attached to the upper outer surface of the arch member 12 with the light emitting surface facing downward.

Therefore, with this configuration, even if the subject 5 moves, the light emitting panel 6 is always maintained at a position where the subject can easily see it.

The arch member 12 is engaged and connected to both sides of the movable top plate 4 by utilizing the elasticity of the arch member, so that it can be easily attached and detached.

Third Embodiment A third embodiment is shown in FIG. 8. This embodiment is a modification for moving the light emitting panel 6 together with the subject 5.
A resin support 13 is erected at the front end of the support 1.
Attach a support plate 14 made of transparent resin to the upper end of 3.
The light emitting panel 6 is attached to the upper or lower surface of this support plate 14.

Other Examples (1) In the first example, a guide rail is provided on the ceiling of the dome to support the light-emitting panel so that it can slide back and forth, and the panel mounting position can be changed, and the light-emitting panel can be inserted and removed from the end of the guide rail and replaced. You may do so.

(2) It is also a good idea to fix a large light-emitting panel that covers almost the entire surface of the dome ceiling. In this case, the light-emitting front may be a split screen formed by a plurality of light-emitting panels.

(3) A colorful light-emitting screen may be constructed by using multiple light sources of different colors.

G Effect of invention According to this idea, the following effects are achieved.

(1) Since the inside of the dome is brightly illuminated by the light emitted from the light emitting panel, the light emitting panel is curved along the dome shape at the top of the dome, and this makes it easier for the patient to be examined. Mental pressure is relieved and anxiety is reduced.

(2) Patterns of pictures and letters appear on the light-emitting screen of the light-emitting panel, which alleviates the feeling of boredom during long shooting sessions and allows the user to comfortably undergo the shooting process.

(3) Using a light-emitting panel made of optical fiber sheet,
Extend both ends of the optical fiber outside the gantry,
Since it is connected to a light source placed outside the gantry, it does not disturb the magnetic field inside the gantry or generate noise.

(4) Even when the light-emitting panel is attached to the ceiling of the dome, it can be installed curved to follow the shape of the ceiling, so it does not interfere with the operation of inserting and removing the top plate inside the dome. Effective use of internal space can be achieved.

(5) Since both ends of the optical fiber sheet of the light emitting panel are connected to the light source, the light from the light source can be effectively guided to the side light emitting part of the optical fiber, so it can be used to illuminate the panel sheet or the inside of the dome. can be done effectively.

[Brief explanation of the drawing]

1 to 4 relate to the first embodiment of this invention, in which FIG. 1 is a schematic longitudinal sectional side view of the entire device, FIG. 2 is a perspective view thereof, and FIG. 3 is a perspective view of a light emitting panel, and FIG. FIG. 4 is an enlarged cross-sectional view of a part of the light emitting panel. 5 to 7 relate to the second embodiment; FIG. 5 is a schematic longitudinal sectional side view of the entire device, FIG. 6 is a perspective view of the main part, and FIG. 7 is a front view of the main part. Also, the 8th
The figure is a perspective view of main parts according to the third embodiment. 1... Gantry, 6... Light emitting panel, 10...
fiber optic cable.

Claims (1)

[Scope of utility model registration request] A light emitting panel is formed by forming a side light emitting part on an optical fiber sheet and arranging a panel sheet in the light emitting part, and a light emitting panel is arranged in the upper part of the dome of the gantry in a curved manner so as to follow the dome shape. A nuclear magnetic resonance tomography apparatus characterized in that both ends are connected to a light source placed outside the gantry.