JPH0329640A - Mri device - Google Patents

Abstract

PURPOSE:To make it possible to keep a patient in a comfortable condition by furnishing a table with a plurality of ventilating holes, forwarding air into the dome of a frame, thereby improving ventilation within the dome. CONSTITUTION:A patient 3 is held over the table 6 of a movable bed section 1 and the patient 3 is moved together with the table 6 into a frame section 2 where magnetic fields are formed so that a desired position is thereby photographed. In this case, the table 6 is furnished with a plurality of ventilating holes 10. As a result, this permits air to be forwarded into the dome 8 of the frame section 2 through the ventilating holes 10 and also permits environment to be improved while convection current is generated within the dome 8 so that the patient can be kept in a comfortable condition.

Description

DETAILED DESCRIPTION OF THE INVENTION [Objective of the Invention (Field of Industrial Application) The present invention relates to an MHI device, and particularly to improving the air conditioning effect thereof.

(Prior Art) An MRI apparatus images a desired area by moving a patient supported on a top plate of a bed section together with the top plate inside a gantry in which a magnetic field is generated, but accurate diagnostic information cannot be obtained. In order to achieve this, patients are forced to remain stationary in a dome inside the cradle for long periods of time. Typically, 30 to 40 minutes of imaging time is spent per patient.

(Problem to be Solved by the Invention) However, in conventional MRI apparatuses, a patient is restrained inside a gantry for a long time, so there is a problem that air circulation inside the gantry deteriorates, causing discomfort to the patient. . In particular, compared to X-ray CT machines, MRI machines have a longer and narrower dome space for accommodating patients inside the gantry, so the temperature inside the dome may rise somewhat due to the patient's own body temperature over a long period of time, causing the atmosphere to deteriorate. Environment worsens. Therefore, even if this is not the case, it places a greater burden on mentally unstable patients. Therefore, patients who are not supposed to move during imaging often end up moving.

MRI equipment is usually located entirely within an air-conditioned room, but
Because the space inside the dome of the pedestal section is narrow, a sufficient air conditioning effect cannot be obtained, and therefore air circulation has not been improved.

The present invention has been made in response to the above-mentioned problems.
It is an object of the present invention to provide an MHI device that improves air circulation inside the frame.

[Structure of the Invention] (Means for Solving the Problems) In order to achieve the above object, the present invention supports a patient on a top plate of a bed section so as to be movable, and a magnetic field is formed inside the pedestal. The MRI apparatus is characterized in that a plurality of ventilation holes are provided in the top plate of the MRI apparatus, which images a desired region by moving the patient along with the top plate.

(Function) By providing a ventilation hole in the top plate, air is sent into the dome of the pedestal through this ventilation hole. This creates a convection of air inside the dome, creating a good atmosphere.
Can keep the patient comfortable.

(Example) Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view showing an embodiment of the MRI apparatus of the present invention.
The MHI apparatus includes a bed section 1 that supports a patient 3, and a pedestal section 2 that houses an imaging mechanism including a static magnetic field generator, a high-frequency magnetic field generator, a gradient magnetic field generator, and the like. The bed section 1 includes a top plate 6 that directly supports the patient 3 and is movable in the horizontal direction X, and a height adjustment N7 for adjusting the height position of the top plate 6 in the vertical direction y. The type lifting mechanism is covered by a bellows 9. Further, the pedestal section 2 includes a dome 8 that guides the patient 3 moved in the horizontal direction X by the top plate 6. Top plate 6 as shown in Figure 2.
At the same time, the patient 3 is guided into the dome 8, and the slice plane of the region to be imaged is determined based on a preset pulse sequence, and imaging is started.

FIGS. 3(a), (b), and (c) show the structure of the top plate 6 of the bed section 1 shown in FIG. 10 is formed, and this ventilation hole 10 is connected to a ventilation source such as a fan or an air conditioner via a tube 12 attached to the common hole l1. It is necessary that the air source be separated by the tube 12 to such an extent that it is not affected by the magnetism of the pedestal section 2. The patient lies on the top plate 6 so as to be surrounded by a plurality of ventilation holes 10.

According to the configuration of this embodiment, the patient 3 who has been moved into the dome 8 of the pedestal section 2 together with the top plate 6 is transported by air supplied from the ventilation source into the dome 8 from the ventilation hole 10. Since air convection occurs within the dome 8, the atmosphere is maintained in a good and comfortable condition. Therefore, since a psychologically stable state can be maintained, there is no movement during imaging, and accurate diagnostic information can be obtained.

FIG. 4 shows another embodiment of the present invention, in which a plurality of ventilation holes 10 are formed on the side surface of the top plate 6. These plurality of ventilation holes 10 are connected to a ventilation source via a tube 12 attached to a common hole 11 as in the previous embodiment. According to this embodiment, since the ventilation hole 10 is formed on the side surface of the top plate 6, the air sent from the ventilation hole 10 into the dome 8 does not directly hit the patient 3, so that patients who do not like being hit directly by the air It is effective when applied when taking pictures.

FIG. 5 shows another embodiment of the present invention, in which a plurality of ventilation holes 10 are formed on the back surface of the top plate 6. According to this embodiment as well, it is possible to prevent the air blown into the dome 8 from the ventilation hole 10 from directly hitting the patient.

FIGS. 6(a) and 6(b) show the drawing structure of the tube 12 in each of the above embodiments, in which one end of the tube 12 is attached to the common hole 11 provided at the rear end position of the top plate 6, The other end is passed through an opening 14 provided approximately at the center of the hydraulic lifting mechanism 13 of the adjustment section 7 and connected to an air source. Further, an appropriate weight 15 is attached to the middle portion of the tube 12, and this weight 15 is selected to have a weight that does not apply an excessive load to the tube 12.

FIG. 6(a) shows the state before the top plate 6 is moved, and the tube 12 is pulled out into the elevating mechanism 13 in an elongated state by applying an appropriate load.

FIG. 6(b) shows the state after the top plate 6 has been moved into the dome 8 of the pedestal section 2, and as before, the tube 12 is stretched by applying an appropriate load to the elevating mechanism 13.
It is pulled out inside. In either case, the tube 12 is kept stretched by an appropriate load, thereby preventing the tube 12 from becoming entangled.

As described above, according to each embodiment of the present invention, by providing the ventilation holes 10 in the top plate 6, when the patient 3 is moved together with the top plate 6 into the dome 8 of the pedestal section 2, Since the air is blown into the patient 8, air convection occurs and the patient 3 can be kept comfortable.

Note that it is desirable that the temperature and humidity of the air sent into the dome 8 from the ventilation holes 10 be optimally adjusted, and in some cases, it is possible to provide more comfort to the patient 3 by adding an appropriate fragrance to the air. It becomes like this. Furthermore, the top plate 6
Since it is usually made of plastic material, it is easy to process it to form the ventilation hole 10.

[Effects of the Invention] As described above, according to the present invention, the ventilation holes are formed in the top plate to send air into the dome of the pedestal, which improves the air circulation within the dome and improves the patient's health. can be kept comfortably.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing an embodiment of the MRI apparatus of the present invention, and Fig. 2v! Figures 3(a) and 3(b) are side views showing the patient placed inside the dome of the pedestal. (C) is a perspective view, a cross-sectional view, and a vertical cross-sectional view showing the top plate of the device of this embodiment; FIGS. 4 and 5 are cross-sectional views showing the top plate according to another embodiment of the present invention; Figure (a). (b) is a side view showing the arrangement of tubes before and after the top plate is moved. DESCRIPTION OF SYMBOLS 1... Frame part, 2... Bed part, 3... Patient, 6... Top plate, 8... Dome, 10...
...Air vent, 12...Tube, 15...Weight. (bl

Claims (1)

[Claims] In an MRI apparatus, a patient is supported on a top plate of a bed section so as to be movable, and a desired region is imaged by moving the patient together with the top plate inside a pedestal in which a magnetic field is formed. MRI characterized by having ventilation holes
Device.