JPH054094B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an MR imaging apparatus, and more particularly to a bed for an MR imaging apparatus equipped with a Surf Eighth coil that can be easily installed on an affected area of a patient for local imaging.

[Conventional technology]

The Surf Eight coil used in conventional MR imaging equipment is, for example, the MR Surfase manufactured by GE.
As shown in the Coils Holdes and Positioning Sids catalog, they were fixed by being sandwiched between the table of the patient's bed and the patient, or by hollowing out the mat above the table and incorporating it. However, since the protrusion of the Surf Eighth Coil causes patient pain, and because the Surf Eighth Coil is fixed, it is necessary for the patient to align himself with the center of the coil depending on the measurement site. I had no choice but to force him into an impossible position.

[Problem that the invention seeks to solve]

With such conventional Surf Eighth coils, when performing local imaging, the Surf Eighth coil is pressed against the patient's imaging site and fixed with adhesive, or the Surf Eighth coil is tied with a belt, or the Surf Eighth coil is tied between the patient's bed and the patient. This caused problems such as the protrusion hitting the patient and causing pain directly to the patient. There is also a device that solves the protruding problem by hollowing out the mat on the table and incorporating the Surf Ace coil and fixing it there, but the Surf Ace coil is fixed in the fixed position of the mat on the table. Measurement site, e.g. cervical vertebrae, vertebral region, lumbar vertebrae, joint region,
In order to view each area, the patient must either move to the center of the Surf Eighth Coil and force the image to be taken in an awkward position, or use a wide variety of Surf Eight coils and mats that are suitable for each area. There was no choice but to prepare them, which presented difficulties due to poor handling, safety, and workability.

[Purpose of the invention]

An object of the present invention is to provide a bed for an MR imaging device that can efficiently image any part of the patient without directly causing pain, and that can perform localized imaging of the whole body without preparing multiple types of Surf Aces. There is a particular thing.

[Means for solving the invention]

In order to achieve the above object, the first invention includes a method in which a subject is placed on a table, the subject is inserted into a static magnetic field inside the cylinder of a magnet, and the subject is irradiated with pulse-modulated high frequency waves to generate nuclear radiation. In a bed for an MR imaging apparatus for performing tomography of the subject by generating magnetic resonance, a surface coil for receiving nuclear magnetic resonance signals is formed into a unit and is detachably placed on the table. In addition, a plurality of spacers are spread over the entire body of the subject on the sides of the Surf Eighth coil, and the heights of the surface of the Surf Eighth coil and the surface of the spacers are made to match.

Further, the second invention is to place a subject on a table, insert the subject into a static magnetic field inside the cylinder of a magnet, and irradiate the subject with pulse-modulated high frequency waves to generate nuclear magnetic resonance. MR for performing tomography of the subject
In a bed for an imaging device, SurfEight coils for receiving nuclear magnetic resonance signals are spread over the table.

Furthermore, the third invention is such that a subject is placed on a table, the subject is inserted into a static magnetic field inside the cylinder of a magnet, and pulse-modulated high frequency waves are irradiated to the subject to cause nuclear magnetic resonance. Accordingly, for performing tomography of the subject
In a bed for an MR imaging device, a Surf-Eighth coil for receiving nuclear magnetic resonance signals is formed into a unit and is slidably mounted on the table, and the Surf-Eighth coil is mounted on the table so as to be freely slidable. Hard pine is placed above the eighth coil.

[Effect]

According to the first invention, since the Surf Eighth coil is detachable, the Surf Eighth coil can be placed at any position according to the measurement area of the subject, and the subject is not forced into an unreasonable posture. . In addition, spacers are spread along the sides of the Surf Eighth Coil, that is, along the patient's body axis, and the surface of the spacer matches the surface height of the Surf Eighth Coil, so the area on which the subject rests is flat, making it uncomfortable for the subject. It can also prevent giving pleasure.

Furthermore, according to the second invention, since the Surf Eighth coil is provided over the whole body of the subject, it is possible to image a plurality of body parts without the subject moving at all. Moreover, since the part on which the test subject rests is flat, the test subject does not feel uncomfortable.

Furthermore, according to the third aspect of the invention, imaging of multiple locations can be performed simply by sliding the Surf Eighth coil to any position according to the measurement location of the subject. In this case as well, the part on which the subject rests is made of hard pine and is flat, so the subject does not feel uncomfortable.

〔Example〕

Examples of the present invention will be described below.

FIG. 1 shows an embodiment of the invention.

In the figure, the table 2 on which the patient sits on the patient bed 1 is hollowed out to extend the length of the patient's entire body. The eighth coil 3 and an arbitrary number of spacers 4 similarly made of non-metallic and non-magnetic material are built in, and are configured to be housed so as to fill the space of the table 2 and to be fixed in position. has been done. By removing the Surf Eighth coil 3 and the spacer 4 and changing their positions, the position of the Surf Eighth coil 3 can be changed as desired. Further, the table 2 is provided with a notch so that the signal cable 5 of the Surf Eighth coil 3 can be moved to an arbitrary position, and a table cutter 6 is attached to cover the notch. Furthermore, a line 7 and a mark 8 are provided on the table 2 so that the coil center position of the Surf Eight coil 3 can be recognized. On the other hand, a line 10 and a mark 11 are similarly provided on the mat 9 placed on the table 2 so that the coil center position of the Surf Eight coil 3 can be recognized.

FIG. 2 shows a cross-sectional view of the Surf Eighth coil unit for an MR imaging device. The figure shows the positional relationship between the Surf-Ace coil unit 3 and the spacer 4, but the Surf-Ace coil unit 3 and the spacer 4 can be changed to any desired position depending on the measurement site (the position shown is the spinal cord). It becomes possible to move and fix the Surf Ace coil 3, and furthermore, the position can be confirmed by the mark 8 on the table 2 and the mark 11 on the mat 9.

FIG. 3 shows a sectional view of a SurfEce coil unit for an MR imaging apparatus showing another embodiment of the present invention. In this figure, the length of the Surf Eighth Coil 3 is made large enough to cover the whole body, thereby eliminating the need to move the Surf Eighth Coil 3 depending on the measurement site.

FIG. 4 shows another embodiment of the invention.

In this embodiment, the mat 9 is made of a reliable material, and the unitized surf ace coil 3 is made slidable in the space between the table 2 and the mat 9. Thereby, the Surf Eighth coil 3 can be set at any location as required, without being affected by the size of the spacer 4 as in the embodiment shown in FIG.

〔Effect of the invention〕

As described above, according to the present invention, the bed on which the subject rests becomes flat, so that tomography can be performed without causing any pain or discomfort to the subject.

In addition, since only one type of Surf Eighth coil is required, there is no need to change the type of Surf Eighth coil depending on the measurement area, which greatly improves work efficiency and is very economically advantageous. .

[Brief explanation of drawings]

FIG. 1 is an external configuration diagram of a surfice coil unit for an MR imaging device showing an embodiment of the present invention, FIG. 2 is a sectional view of the surface coil unit for an MR imaging device shown in the embodiment shown in FIG. 1, and FIG. FIG. 4 is a cross-sectional view of a surf-eight coil unit for an MR imaging apparatus showing another embodiment of the present invention, and FIG. 4 is a cross-sectional view of a surf-eight coil unit for an MR imaging apparatus showing another embodiment of the invention. 1... Patient bed, 2... Table, 3... Surf Eighth coil, 4... Spacer, 5... Signal cable, 6... Table iter, 7... Line,
8...Mark, 9...Matsuto, 10...Line,
11...Mark.

Claims (1)

[Claims] 1. A subject is placed on a table, the subject is inserted into a static magnetic field inside the cylinder of a magnet, and the subject is irradiated with pulse-modulated high frequency waves to cause nuclear magnetic resonance. , in the bed for an MR imaging apparatus for performing tomography of a subject, a Surf Eighth coil for receiving nuclear magnetic resonance signals is formed into a unit and is removably placed on the table; 1. A bed for an MR imaging apparatus, characterized in that a plurality of spacers are spread laterally over the whole body of the subject, and the heights of the surface of the Surf Eighth coil and the surface of the spacers are made to match. 2. The bed for an MR imaging apparatus according to claim 1, characterized in that a display function is provided on the table to indicate the center position of the Surf Eighth coil.
Bed for MR imaging equipment. 3 A subject is placed on a table, the subject is inserted into the static magnetic field inside the cylinder of the magnet, and the subject is irradiated with pulse-modulated high frequency waves to generate nuclear magnetic resonance, thereby taking a tomographic image of the subject. What is claimed is: 1. A bed for an MR imaging device for carrying out the following: a bed for an MR imaging device, characterized in that the table is covered with Surf Eight coils for receiving nuclear magnetic resonance signals. 4. A subject is placed on a table, the subject is inserted into the static magnetic field inside the cylinder of the magnet, and pulse-modulated high frequency waves are irradiated to the subject to generate nuclear magnetic resonance, thereby taking a tomographic image of the subject. In a bed for an MR imaging apparatus for performing nuclear magnetic resonance signals, a Surf-Eighth coil for receiving nuclear magnetic resonance signals is formed into a unit and is slidably placed on the table, and the sliding of the Surf-Eighth coil is prevented. There is no. A bed for an MR imaging device, characterized in that a hard mat is placed above the Surf Eighth coil.