JP2000116619A - Table device for mri and rf coil unit for mri - Google Patents

Abstract

PROBLEM TO BE SOLVED: To secure a sensitive area and a space of a subject with a coil center matching a magnet center even in the use of a smaller body coil. SOLUTION: A high magnetic field type MRI apparatus 100 has a cradle 10 of a table device 1 in which base units 2-1, 2-2 and 2-3 each having a flat surface and a link unit 3 are arranged slidably and detachably on the surface of a table. An RF unit 101 for MRI is replaced with any of the base units 2-1, 2-2 and 2-3 according to a photographing part of the subject and coupled to an adjacent base unit thereby affording an MRI image of high quality.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to an MRI (Magnetic
Resonance Imaging) Table device for device and MR
Regarding RF (Radio Frequency) coil unit for I,
More specifically, even when a small body coil is used, the coil center is matched with the magnet center and the coil sensitivity area and the space for the subject can be secured.
The present invention relates to a table device for RF and an RF coil unit for MRI. In particular, it is useful for transmitting an RF pulse for excitation in a high magnetic field type MRI apparatus.

[0002]

2. Description of the Related Art FIG. 13 is a schematic view showing a main part of an example of a conventional MRI apparatus. FIG. 14 is a sectional view of FIG. In the MRI apparatus 500, a main magnetic field generating magnet 51a, a gradient magnetic field coil 52, an RF shield 53, and a whole body coil 54 are provided concentrically inside a magnet assembly A 'in order from the outer peripheral side. ing. A bore (cylindrical space) S into which a subject (patient) H placed on the cradle 50 of the table device 501 can be inserted is opened in the magnet assembly A ′. The main magnetic field generating magnet 5 is provided in the bore S.
A main magnetic field having an intensity of, for example, 1.5 T is formed by 1a. The diameter D1 of the bore S is, for example, 55 to 60 cm. The body coil for whole body 54 transmits an RF pulse for excitation to the subject H, and an NMR signal from the subject H
(Nuclear Magnetic Resonance) signal. The frequencies of the excitation RF pulse and the NMR signal are, for example, 63.8 MHz. The table surface of the table device 501 can be moved up and down by, for example, hydraulic pressure. The cradle 50 can be moved in the horizontal direction (in the body axis direction of the subject H) by, for example, a driving force of a motor.
Generally, at the time of imaging, the height of the cradle 50 is adjusted such that the center of the subject H is located at the center of the main magnetic field generating magnet 51a, that is, the magnet center P.

[0003]

In the above-mentioned conventional MRI apparatus 500, since the intensity of the main magnetic field is relatively small (1.5 T in the above example), the excitation power is relatively small, and the whole body coil 54 can be used. The subject H was sufficiently excited. By the way, in recent years, a high magnetic field type (for example, 3T or more) MRI apparatus has been studied from the viewpoint of improving the resolution of an MRI image. In such a high magnetic field type MRI apparatus, the frequency of the RF pulse for excitation or the NMR signal becomes high (for example, 127 MHz), is strongly affected by the skin effect, and requires a large excitation power. Therefore, it is required to employ a small body coil (partial coil) in which the distance between the subject and the coil is small and which can selectively excite only the imaging site. Small body coils are typically designed to have a uniform sensitivity distribution symmetric about the coil center to minimize the effects of shading. In this case, if the coil center and the magnet center do not match, the distance between the small body coil and the RF shield 53 is deviated, and mutual interference between the two causes a problem that the sensitivity distribution becomes non-uniform. However, if a small body coil is mounted on the cradle 50, there is a problem that it is difficult to keep the sensitivity area and secure a space for the subject while keeping the coil center coincident with the magnet center. Accordingly, it is an object of the present invention to provide a magnetic recording medium in which even if a small body coil is used, the coil center is matched with the magnet center, the sensitivity area of the coil can be maintained, and a space for the subject can be secured.
An object of the present invention is to provide an RI table device and an MRI RF coil unit.

[0004]

According to a first aspect of the present invention, there is provided an MRI table device for placing a subject in a space in which a main magnetic field for MRI is formed, comprising an RF coil unit for MRI. A table apparatus for MRI, characterized in that a plurality of table units which can be replaced with a table are slidably and detachably arranged on a table surface to form a cradle. In the MRI table device according to the first aspect, the base unit corresponding to the imaging region of the subject is removed from the table surface, and the M unit functioning as a small body coil is removed.
When the RF coil unit for RI is replaced, a part of the RF coil unit for MRI is disposed below the upper surface of the base unit, that is, below the subject mounting surface. (A small body coil is placed on a conventional cradle. Even when the coil center and the magnet center are aligned, a sufficient coil sensitivity area and a space for the subject can be ensured, and the image quality of the MRI image can be sufficiently improved.

[0005] In a second aspect, the present invention provides an MRI RF coil unit having coupling means for coupling to the base unit of the MRI table apparatus of the first aspect. In the MRI RF coil unit according to the second aspect, when replaced with a platform unit corresponding to the imaging region of the subject, the MRI RF coil unit can be coupled to an adjacent platform unit by using coupling means. Can be slid on the table without damaging the table.

In a third aspect, the present invention is an MRI table device for placing a subject in a space in which a main magnetic field for MRI is formed, wherein the MRI RF coil unit has a plurality of detachable detachable coil units. Provided is an MRI table device, wherein a coil cradle unit is slidably disposed on a table surface to form a cradle. In the MRI table apparatus according to the third aspect, if a part of the MRI RF coil unit mounted on the coil mount unit is disposed below the subject mounting surface, a small body is placed on the conventional cradle. Even when the coil center and the magnet center are matched during imaging (compared to the case where a coil is mounted), the coil sensitivity area and the space for the subject can be sufficiently ensured, and the image quality of the MRI image can be sufficiently improved. Also, without changing the arrangement state of each coil mount unit,
Since the imaging site can be changed only by re-attaching the I RF coil unit to another coil mount unit, different sites can be efficiently imaged in a short time.

In a fourth aspect, the present invention provides the MRI table device according to the third aspect, wherein the coil mount unit includes a part of the MRI RF coil unit positioned below a subject mounting surface. Provided is an MRI table device having a concave portion or a hole portion to be arranged.
In the MRI table device according to the fourth aspect, MR
By fitting the bottom of the RF coil unit for I to the concave portion or hole of the coil mount unit,
The F coil unit can be mounted in a stable posture without any displacement.

According to a fifth aspect of the present invention, there is provided an MRI table apparatus for placing a subject in a space in which a main magnetic field for MRI is formed, wherein at least one table unit is slidable and detachable. Arrange on the table surface as possible,
At least one removable MRI RF coil unit
There is provided an MRI table device, wherein two coil mount units are slidably and detachably disposed on the table surface, and the base unit and the coil mount unit are cradle. In the MRI table device according to the fifth aspect, since the combination of the base unit and the coil mount unit is a cradle, the coil mount unit is disposed at a position corresponding to the image pickup site, so that the image pickup site is preferably used. Image. Also, since there may be only one coil mount unit,
The configuration can be made relatively simple. Furthermore, since the MRI RF coil unit can be easily attached and detached without changing the arrangement state of each unit, handling and maintenance management of the MRI RF coil unit can be easily performed.

In a sixth aspect, the present invention provides an MRI having a coil shape mountable on a coil mount unit of the MRI table apparatus according to any one of the third to fifth aspects. An RF coil unit. Since the MRI RF coil unit according to the sixth aspect has a coil shape that can be installed on the coil mount unit, the MRI RF coil unit can be suitably attached to and detached from the coil mount unit having the above configuration.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in more detail with reference to the embodiments shown in the drawings. Note that the present invention is not limited by this.

In FIG. 1, FIG. 2, FIG. 3, and FIG.
A part of the upper surface of the base unit 01 and the base units 2-1, 2-2, and 2-3 is drawn by wavy lines, and a portion preceding the wavy line is omitted (actually, the entire upper surface is flat). First Embodiment FIG. 1 is a schematic diagram of a high-field MRI apparatus including a table apparatus according to a first embodiment of the present invention. In this high magnetic field type MRI apparatus 100, the magnet assembly A
Inside the main magnetic field generating magnet 5 in order from the outer peripheral side.
1, a gradient magnetic field coil 52 and an RF shield 53 are provided concentrically. A bore (cylindrical space) S into which the subject (patient) H placed on the cradle 10 of the table device 1 can be inserted is opened in the magnet assembly A. A main magnetic field having a strength of, for example, 3T is formed in the bore S by the main magnetic field generating magnet 51. The diameter of the bore S (D1 in FIG. 5) is, for example, 55 to 55.
60 cm. The table surface of the table device 1 is
For example, it can be raised and lowered by hydraulic pressure.

FIG. 2 is an exploded perspective view showing the structure of the cradle 10. As shown in FIG. The cradle 10 has a base unit 2 having a flat upper surface on which a subject (H in FIG. 4) can be placed.
-1, 2-2, 2-3 and the connecting unit 3 are slidably and detachably arranged on the table surface of the table apparatus 1 (see FIG. 1). The base units 2-1, 2-2, 2-3 and the connection unit 3
Is the first unit (the base unit 2-1 in the example shown).
In this order, the units are connected by hooking the hook HK of the subsequent unit to the hook clasp K of the preceding unit. By removing the hook K, each unit can be easily removed from the table surface. The cradle 10 is pulled or pushed out by, for example, a transmission mechanism (for example, a chain) C that transmits the driving force of a motor, and slides horizontally on the table surface of the table device 1 (in the body axis direction of the subject H). .

FIG. 3 shows an RF coil unit 10 for MRI.
FIG. The RF coil unit 101 for MRI has a pedestal portion 11 having a bottom curved surface that is in sliding contact with the table surface of the table device 1 and having a hook HK and a hook clasp K fixed at front and rear ends. It is provided with side parts 12, 13 arranged on both sides. An element e1 is formed on the side surface portion 12, and a part of the element e1 is formed in the pedestal portion 11. An element e2 is formed on the side surface portion 13, and a part of the element e2 is
Formed within. If the dimension example of each part is shown, the width w of the pedestal part 11 is, for example, 53 cm and the maximum value τ of the thickness
1 is, for example, 5 cm, and the depth d is, for example, 30 cm. The thickness τ2 of the side portions 12 and 13 is, for example, 3 cm.
And the height h is, for example, 25 cm.

Returning to FIG. 1, the MRI RF coil unit 101 is replaced with one of the platform units 2-1, 2-2, 2-3 according to the imaging site of the subject H.
It is connected to an adjacent platform unit (in the example shown, 2-3
Exchanged with). That is, when imaging the foot or waist of the subject H, the base unit 2-1 is removed from the table surface, and the MRI RF coil unit 1 is removed.
01 and the MRI RF coil unit 101
The hook HK of the stand unit 2-2 is hooked on the hook clasp K of. When imaging the abdomen of the subject H, the table unit 2-2 is detached from the table surface and replaced with the MRI RF coil unit 101, and the MRI RF coil unit 101 is replaced.
The hook HK of the coil unit 101 is attached to the base unit 2-1.
The hook HK of the base unit 2-3 is hooked on the hook clasp K of the RF coil unit 101 for MRI. When imaging the shoulder of the subject H,
The base unit 2-3 is removed from the table surface, and is replaced with the MRI RF coil unit 101.
The hook HK of the RF coil unit 101 for RI is hooked on the hook clasp K of the base unit 2-2, and the RF
The hook HK of the connection unit 3 is hooked on the hook clasp K of the coil unit 101.

FIG. 4 shows a state in which the cradle 10 is moved into the bore S in a state where the MRI RF coil unit 101 is replaced with the base unit 2-3. FIG.
It is sectional drawing of FIG. Since the bottom curved surface of the pedestal portion 11 of the MRI RF coil unit 101 is in sliding contact with the table surface of the table device 1, the elements e1, e2
Are disposed below the upper surfaces of the table units 2-1 and 2-2, that is, the mounting surface of the subject H. Thereby, the sensitivity area of the coil can be ensured with the coil center aligned with the magnet center P.

According to the table apparatus 1 described above, the cradle 10 is formed by arranging the connected units of the base units 2-1, 2-2, 2-3 and the connecting unit 3 on the table surface.
One of the base units 2-1, 2-2, and 2-3 is replaced with the MRI RF coil unit 101 in accordance with the imaging site, and a part of the MRI RF coil unit 101 is placed on the subject H. Can be placed below the plane,
The coil center and the magnet center P can be matched at the time of imaging, and a sufficient coil sensitivity area and space for the subject H can be secured. By matching the coil center with the magnet center P, M
Since the distance between the RI RF coil unit 101 and the RF shield 53 can be equalized, mutual interference between them can be made symmetrical with respect to the coil center, and the uniformity of the sensitivity distribution can be sufficiently improved. In the first embodiment, the table device 1 including the cradle 10 is mounted on a high magnetic field type MRI.
Although applied to the apparatus 100, it may be applied to a low magnetic field type MRI apparatus. In this case, only the MRI R
Since the excitation can be efficiently performed by the F coil unit 101, the excitation power can be saved and the SAR (Specific A
bsorption Rate (specific absorption rate) can be reduced.

Second Embodiment FIG. 6 is an exploded perspective view showing a cradle structure of a table device according to a second embodiment of the present invention. The cradle 20 transmits an RF pulse for excitation (may also serve to receive an NMR signal), an RF coil unit 201 for MRI, or an upper plate 202 for flattening a subject mounting surface.
Stand 22-2, 22-2, detachable
22-3 and the connection unit 23 are slidably provided on a table surface of a table device (not shown). The base units 22-1, 22-2, 22-3
A concave portion U is formed in which a part of the MRI RF coil unit 201 is disposed below the subject mounting surface when the MRI RF coil unit 201 is coupled to the MRI RF coil unit 201. The coil mount unit 22-1, 22-2, 22
-3 and the connecting unit 23 are connected in that order from the head unit (in the illustrated example, 22-1) by hooking the engaging groove M of the preceding unit with the pawl T of the succeeding unit. Each unit can be easily removed from the table surface by pulling out the unit. The nail T
Since the engagement groove M can be formed integrally with each unit, it is advantageous from the viewpoint of cost reduction. FIG. 7 shows the coil mount unit 22-1 and the coil mount unit 2
The end face of the connection part (indicated by a dotted circle) with 2-2 is shown in an enlarged manner.

FIG. 8 is a perspective view showing the MRI RF coil unit 201. This MRI RF coil unit 201 includes coil mount units 22-1, 22-
The pedestal portion 27 has a bottom curved surface that fits into the concave portion U of each of the pedestals 2 and 22-3, and side portions 28 and 29 arranged on both sides of the pedestal portion 27. An element e1 is formed on the side surface part 28, and a part of the element e1 is formed in the pedestal part 27. An element e2 is formed on the side surface part 28, and a part of the element e2 is formed in the pedestal part 27.

Returning to FIG. 6, the MRI RF coil unit 201 is mounted on one of the coil mount units 22-1, 22-2, and 22-3 according to the imaging site of the subject (illustration shown). In the example shown in FIG.
That is, when imaging the foot or waist of the subject, the MRI RF coil unit 201 is mounted on the coil mount unit 22-1. When imaging the abdomen of the subject, the MRI RF coil unit 20 is used.
1 is mounted on the coil mount unit 22-2. When imaging the shoulder of the subject, the MRI RF coil unit 201 is mounted on the coil mount unit 22-3. At the time of mounting, a part of the elements e1 and e2 of the MRI RF coil unit 201 is disposed below the subject mounting surface. The upper plate 202 is mounted to the coil mount units 22-1, 22-2, and 22-3 to which the MRI RF coil unit 201 is not mounted (in the illustrated example, 22-1 and 22-2). −
2).

According to the table apparatus including the cradle 20, the imaging site can be changed only by remounting the MRI RF coil unit 201 to another coil mount unit without changing the connection state of each unit. Different parts can be efficiently imaged in a short time.

In FIG. 9, for convenience of showing the hook clasp K, a part of the upper surface of each of the base units 2-1 and 2-2 is drawn with a dashed line, and a portion ahead of the dashed line is not shown (actually). Indicates that the entire top surface of each unit is flat.) Third Embodiment FIG. 9 is an exploded perspective view showing a structure of a cradle of a table device according to a third embodiment of the present invention. The cradle 30 includes table units 2-1 and 2-2 having flat upper surfaces on which a subject can be placed, and an MRI R that transmits an RF pulse for excitation (may also serve to receive an NMR signal).
A table unit (not shown) in which the coil mount unit 32 and the connection unit 3 to which the F coil unit 201 (see FIG. 8) can be attached and detached are slidably and detachably attached.
It is a configuration arranged on the table surface. However, the arrangement position of the coil mount unit 32 is not limited to the illustrated position. The coil mount unit 32 includes the MRI
A concave portion U is formed in which a part of the MRI RF coil unit 201 is disposed below the subject mounting surface when the MRI RF coil unit 201 is coupled with the RF coil unit 201. The base units 2-1 and 2-2, the coil mount unit 32, and the connection unit 3 are arranged in order from the head unit (2-1 in the illustrated example) in the order of the hook clasp K of the preceding unit.
Are connected to each other by hooking a hook HK of a subsequent unit. By removing the hook HK, each unit can be easily removed from the table surface. It should be noted that the base unit 2-1 is provided with a hook HK because it may be disposed at a position other than the top.

The coil mount unit 32 is disposed at a position corresponding to the imaging part of the subject, and is connected to an adjacent mount unit. That is, when imaging the foot or the waist of the subject, the coil mount unit 32 is disposed at the head position (the base units 2-1 and 2-2 are located at the second and third positions counted from the head). Shift). When imaging the abdomen of the subject, the coil mount unit 32 is disposed at the second position counted from the top (the base unit 2-
1 is the first position, and the base unit 2-2 is the third position). When imaging the shoulder of the subject, the coil mount unit 32 is disposed at the third position counted from the top.

According to the above-described table apparatus including the cradle 30, the arrangement position of the coil gantry unit 32 is changed according to the imaging site, so that only one coil gantry unit 32 is required and the configuration can be relatively simplified. . Further, since the MRI RF coil unit 201 can be easily attached and detached without changing the connection state of each unit, the handling and maintenance management of the MRI RF coil unit 201 can be easily performed.

Fourth Embodiment FIG. 10 is an exploded perspective view showing the structure of a cradle of a table device according to a fourth embodiment of the present invention. This cradle 40 transmits an RF pulse for excitation (NMR
The coil mount unit 42-1, in which the MRI RF coil units 401 and 402 or the fitting plate 403 for flattening the subject mounting surface can be attached and detached.
This is a configuration in which 42-2, 42-3 and a connecting unit 43 are slidably provided on a table surface of a table device (not shown). The coil mount unit 42-1,
Holes G for disposing a part of the MRI RF coil units 401 and 402 below the subject mounting surface are formed in 42-2 and 42-3. The coil mount units 42-1, 42-2, 42-3 and the connection unit 43 are a head unit (42-1 in the illustrated example).
Are connected in that order by hooking the hook HK of the subsequent unit to the hook clasp K of the preceding unit.

FIG. 11 shows an RF coil unit 4 for MRI.
It is a perspective view which shows 01. The MRI RF coil unit 401 includes the coil mount units 42-1 and 42-2.
Pedestal 44 penetrating through hole G of 2-2 and 42-3
And side portions 45, 4 arranged on both sides of the pedestal portion 44.
6 is provided. An element e1 is formed on the side surface part 45, and a part of the element e1 is formed in the pedestal part. The side portion 46
Is formed with an element e2, and a part of the element e2 is formed in the pedestal portion 44.

FIG. 12 shows an RF coil unit 4 for MRI.
It is a perspective view which shows No. 02. The MRI RF coil unit 402 includes the coil mount units 42-1 and 42-2.
Pedestal portion 47 penetrating through hole G of -2, 42-3
And a column 48 erected on one side of the pedestal 47,
An upper surface portion 49 fixed to the upper portion of the support portion 48 is provided. An element ed is formed on the pedestal portion 47 (therefore, the element ed is disposed below the subject mounting surface at the time of mounting, and the coil center and the magnet center are matched, and the coil sensitivity area and the object A sufficient space for the sample can be secured). An element eu is formed on the upper surface portion 49.

According to the table apparatus including the cradle 40 described above, the coil mount unit 42 can
-1, 42-2, 42-3, RF for MRI
Since either one of the coil units 401 and 402 is selected and mounted, it is possible to easily perform imaging using an RF coil of a type that can obtain an MRI image suitable for the preference of an image reader (doctor or technician) or the imaging purpose. I can do it. Also, MRI
The square base 44 (or 47) of the RF coil unit 401 (or 402) for
-1, 42-2, and 42-3, and is supported on the table surface, so that the gantry structure can be simplified and the stability of the coil posture can be sufficiently improved.

In the first to fourth embodiments, the cradle is formed by connecting a plurality of pedestal units and coil gantry units. However, a part of the MRI RF coil unit is positioned below the subject mounting surface. A cradle having a concave portion to be placed in the cradle is made as an integral part, an MRI RF coil unit is mounted on the cradle portion corresponding to the imaging site, and a member for flattening the subject mounting surface on the other portion of the cradle ( For example, many strip-shaped flat plates) may be covered.

[0029]

According to the present invention, the MRI table apparatus and M of the present invention are provided.
According to the RF coil unit for RI, the following effects can be obtained. (1) RF for MRI that functions as a small body coil
Since the coil unit is replaced with any one of the plurality of base units that function as a cradle, or is mounted on the coil mount unit, it is possible to perform imaging with the coil center aligned with the magnet center, A high quality MRI image can be obtained. (2) The coil sensitivity area and the space for the subject can be ensured after the coil center is aligned with the center of the subject. (3) By simply replacing the MRI RF coil unit, imaging with a different type of RF coil can be performed, so that clinical usefulness is high. (4) Since the base unit or coil mount unit serving as a mechanical mechanism and the MRI RF coil unit serving as an antenna mechanism can be handled as separate parts, maintenance and improvement of each unit can be performed efficiently.

[Brief description of the drawings]

FIG. 1 is a schematic diagram of a high magnetic field type MRI apparatus including a table apparatus according to a first embodiment of the present invention.

FIG. 2 is an exploded perspective view showing a structure of a cradle according to the table device of FIG.

FIG. 3 is a perspective view showing an MRI RF coil unit.

FIG. 4 is an explanatory diagram showing a state in which a cradle has been moved.

FIG. 5 is a sectional view of FIG. 4;

FIG. 6 is an exploded perspective view showing a structure of a cradle according to a table device according to a second embodiment of the present invention.

FIG. 7 is an enlarged end view showing a connecting portion between adjacent platform units.

FIG. 8 is another perspective view showing the RF coil unit for MRI.

FIG. 9 is an exploded perspective view showing the structure of a cradle according to a table device according to a third embodiment of the present invention.

FIG. 10 is an exploded perspective view showing a structure of a cradle according to a table device according to a fourth embodiment of the present invention.

FIG. 11 is still another perspective view showing the RF coil unit for MRI.

FIG. 12 is still another perspective view showing the RF coil unit for MRI.

FIG. 13 is a schematic view showing an example of a conventional MRI apparatus.

FIG. 14 is a sectional view of FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Table apparatus 2-1 2-2-3 2-3 unit 3,23,43 Connecting unit 10,20,30,40 Cradle 22-1,22-2,22-3 Coil mount unit 32,42-1 , 42-2, 42-3 Coil mount unit 100 High magnetic field type MRI apparatus 101, 201, 401, 402 MRI RF coil unit 202 Upper plate 403 Fitting plate e1, e2, eu, ed Element G Hole HK hook K hook Clasp M Engagement groove T Claw U Recess

Claims (6)

[Claims] 1. An MRI table device for mounting a subject in a space in which a main magnetic field for MRI is formed, wherein a plurality of table units replaceable with an MRI RF coil unit are slidable and detachable. An MRI table device, wherein the cradle is disposed on a table surface in a possible state. 2. An MRI RF coil unit comprising coupling means for coupling to a table unit of the MRI table device according to claim 1. 3. An MRI table device for mounting a subject in a space in which a main magnetic field for MRI is formed, wherein a plurality of coil mount units to which a MRI RF coil unit can be attached and detached are slidable. An MRI table device, which is disposed on a table surface in a state and is used as a cradle. 4. The MRI table device according to claim 3, wherein the coil mount unit includes the MRI R unit.
MRI characterized by having a concave portion or a hole for disposing a part of an F coil unit below a subject mounting surface.
Table equipment. 5. An MRI table device for placing a subject in a space in which a main magnetic field for MRI is formed, wherein at least one table unit is slidably and detachably arranged on the table surface. Wherein at least one coil mount unit to which the MRI RF coil unit can be attached and detached is slidably and detachably provided on the table surface, and the stand unit and the coil mount unit are cradle. MRI table device. 6. An MRI RF having a coil shape mountable on a coil mount unit of the MRI table device according to any one of claims 3 to 5.
Coil unit.