JPH08107893A - Medical image diagnostic apparatus with height adjusting function - Google Patents

Abstract

PURPOSE: To realize a medical diagnostic apparatus which enables measurement without changing the height of a bed on which an examine lies during various treatments in performing an IVR technique combined with other devices such as X-ray camera, in the medical image diagnosing apparatus. CONSTITUTION: In an X-ray CT apparatus, a vertically driving mechanism is provided on a scanner support section 3 on the side of an X-ray scanner body 1 in addition to a height adjusting mechanism of a bed 4 on which an examinee lies to allow the adjusting of the height of a gantry opening 2. This apparatus enables an X-ray CT measurement without changing the height of the bed 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a medical image diagnostic apparatus such as an X-ray CT apparatus, and more particularly to a medical image diagnostic apparatus capable of adjusting the height of a gantry opening.

[0002]

2. Description of the Related Art X-ray CT apparatus, magnetic resonance imaging apparatus (hereinafter abbreviated as MRI apparatus), positron CT apparatus,
In a conventional medical image diagnostic apparatus having a gantry opening such as an emission CT apparatus, the height of the gantry opening for measuring the subject is fixed, and the tilting operation of the gantry body does not occur. It is possible, but the height cannot be adjusted. Therefore, the operator lays the subject on the bed, adjusts the height of the bed to match the height of the center of the gantry opening, and further moves the table of the bed horizontally. A subject is inserted into the gantry opening to perform measurement. That is, it is premised that the height of the subject is adjusted on the bed.

However, recently, in interventional radiology (hereinafter referred to as I
There is an increasing number of occasions in which various surgical operation procedures for performing medical treatment of the site at the same time as measurement image diagnosis called VR) are performed, and various medical image diagnosis apparatuses are mainly combined with an X-ray apparatus for the circulatory organ. Are being used more often. As an example of such usage, an X-ray CT disclosed in Japanese Utility Model Laid-Open No. 61-196715 is used.
There is a combination of the device with the circulatory X-ray device. And, in this new plan, it is a feature of this device that the measurement center position isocenter of each of these measuring devices is the same. Further, as another example, an X-ray tube and an X-ray film cassette are arranged inside a bed of an X-ray CT apparatus, as described in the 49th Japan Society of Medical Radiation Technology Abstract 298.
Directly above this position is the X-ray I.D. An IVR CT in which an I device and an X-ray tube are arranged has been announced.

Both of these apparatuses have the same basic operation method and structure as the conventional X-ray CT apparatus, but X-ray C
It is characterized in that the bed for the T device is commonly used for X-ray imaging and X-ray CT measurement.

[0005]

By the way, most of the IVRs require a long treatment in terms of time, and since the doctor treats the patient in a standing state or a sitting state, the height position of the bed is the treatment. It is usually adjusted for ease of use. However, the height position of this bed rarely coincides with the measurement position of a medical image diagnostic apparatus such as an X-ray CT apparatus or the imaging center position of the X-ray apparatus, and therefore, the bed is required for each measurement by each apparatus. It is essential to adjust the height of the. However, many subjects are often pierced with various infusion packs, tubes such as needles for catheters, and also connected with cables for various measuring devices such as ultrasonic devices and electrocardiographs. Therefore, the measurement position shift due to height adjustment and movement of the bed and the disconnection of various connection jigs, etc.
It was often a big problem.

The present invention has been made to solve the above-mentioned problems, and includes a medical image diagnostic apparatus such as an X-ray CT apparatus,
To provide a medical image diagnostic apparatus capable of performing measurement during various treatments without changing the height of a bed on which a subject sits when performing an IVR procedure in combination with other various apparatuses such as an X-ray imaging apparatus. With the goal.

[0007]

In order to achieve this object, in the present invention, in addition to the height adjusting mechanism of the bed portion of the medical image diagnostic apparatus, the height of the mechanism portion is also provided on the gantry portion main body side. A mechanism for adjusting the position of the gantry is provided so that the height of the gantry opening for measuring the subject can be adjusted.

[0008]

By providing a mechanism for adjusting the height of the gantry body in various medical image diagnostic apparatuses, not only the conventional X-ray CT apparatus alone can be used for measurement, but also various other types such as an X-ray imaging apparatus. Even when performing an IVR procedure in combination with a device, various medical image diagnostic devices can be used at the same height position without changing the height of the bed on which the examinee rides when measuring with various other devices. Since the measurement can be performed, it is possible to reduce the problem of the measurement position shift of the subject and the detachment of various connection jigs.

[0009]

EXAMPLE An X-ray CT apparatus is selected as a representative of various medical image diagnostic apparatuses, and an example of the medical image diagnostic apparatus with a height adjusting mechanism according to the present invention will be described below.

FIG. 1 shows an external view of an embodiment of an X-ray CT apparatus according to the present invention. 1A and 1B are external views of the X-ray scanner 1 and the bed 4, and FIG. 1B shows an example in which a scanner support portion 3 for tilting the scanner is built in a scanner cover. There is.

In this apparatus, after the subject sleeps on the table of the bed 4, the table of the bed 4 is moved into the gantry opening 2 of the scanner, and the X-ray CT measurement of the subject is performed. . Recently, an X-ray CT apparatus has been proposed in which the table position of the bed 4 is fixed and the scanner 1 can be moved for measurement. In this case, the present invention is also applied. By the way, the characteristic of the device according to the present invention is that, as the operation of the scanner supporting portion 3, in addition to tilting the gantry opening 2 of the scanner (referred to as tilt operation), as shown by an arrow,
The vertical movement of the scanner itself is possible, which allows the height of the gantry opening 2 to be adjusted.

Next, FIG. 2 is an explanatory diagram of the internal structure of the scanner according to the present invention. By the way, many scanner structures of a general X-ray CT apparatus are described in Japanese Utility Model Publication No. 54-35181, Japanese Utility Model Publication No. 54-40076 and Japanese Utility Model Publication No. 59-5904. Basically, it has a double-sided support structure at both ends of the scanner side, and there are two types of operations: the rotation operation of the measurement system such as the X-ray tube and the detection section, and the tilt operation of this rotation measurement system. It is common. On the other hand, in the present invention, the vertical movement of this measurement system is further added, and in the example of FIG.
This vertical movement structure is added. By the way, in the example of FIG. 2, the internal structure of the CT scanner of the third generation system is shown, but in the CT of other generation systems, the basic structure is different to the extent that the shapes of the X-ray source and the detector are different. Is the same,
For example, instead of the X-ray tube, an electrode switching type X-ray tube described in JP-A-55-46408 and JP-A-58-58.
It is needless to say that the concept of the present invention can be similarly applied to various X-ray CT apparatuses such as the electron gun rotary movement type X-ray generation method such as 115738.

Next, the details of the scanner will be described with reference to FIG. First, this figure shows the internal structure as seen from the front of the scanner (viewed from the bed side). The detector 7 is arranged at a position facing the X-ray tube 5, and the X-rays emitted from the X-ray tube 5 are The collimator unit 6 forms an X-ray beam narrowed in the slice direction (scanner depth direction). Then, the X-ray transmitted through the subject is converted into an electric signal by the detector 7, amplified by the detection circuit unit 8, and further converted into an analog signal into a digital signal,
The image is reconstructed by being sent to an image processing unit not shown in the figure.

Inside the scanner, each of the units 5
A rotary base 9 is fixed on a rotary base 9, and the rotary base 9 is supported on a scanner base 11 by a rotary bearing 10 having a bearing structure. As a result, since the rotation base 9 can freely rotate, the units 5 to 8 integrally rotate and the X-ray CT can be measured.

The scanner base 11 has a rotary shaft 31.
Is connected to the scanner support 3. The support portion 3 has a structure for driving the rotary shaft 31 to tilt (tilt) the scanner base 11, and its mechanism is, specifically, a drive by a gear or a belt, a hydraulic drive, or the like. There are various methods, and any method is possible. Further, as in the present embodiment, the rotary shaft 31 is installed on the side surface portion of the scanner base 11 corresponding to the center line of the rotary base 9, and the support drive unit is attached to the side surface portion. There is also a structure in which a gear mechanism for changing the angle, a hydraulic pump, or the like is directly attached to the lower portion to support the entire scanner. And finally,
The support portion 3 that supports the scanner is fixed to the floor surface by the scanner fixing base 32.

Next, in such a scanner structure,
The vertical movement of the scanner can be performed by the means shown in FIG. First, as shown in FIG. 3, the structure of the fixing base 32 is divided into two, that is, a floor fixing portion 321 and a supporting portion fixing portion 322. Then, in the example of (a), by disposing a hydraulic drive device 323 such as a hydraulic jug between them, the support portion fixing portion 322 is moved up and down with respect to the floor surface fixing portion 321, and the entire scanner is moved up and down. To move. (B)
In the above example, a screw hole is provided in either one of the floor surface fixing portion 321 and the supporting portion fixing portion 322, and the ball screw 3 is provided in this screw hole.
In this example, a rotation driving device 326 such as a motor is provided at one end of the ball screw 325, and the ball screw is rotated by controlling the rotation driving device 326 to allow the support portion fixing portion 322 to move up and down. . However, in this case, a guide mechanism is required to prevent the support part fixing part 322, which is a movable part, from rotating, and in (b), a through hole is provided in the support part fixing part 322, and the guide rod 32 is provided in this hole.
4 is provided.

By the way, the structure for performing the vertical movement of the scanner is not limited to the present embodiment described with reference to FIGS. 2 and 3, and various other drive mechanisms are possible. For example, it goes without saying that the same effect can be obtained also by means of moving up and down the floor surface to which the scanner fixing base 32 is fixed, or the entire floor surface below the scanner.

Further, regarding the positioning of the imaging portion in the longitudinal direction of the bed on which the subject rides, it is better to move the scanner main body relatively than to move the bed while piercing the subject with a catheter or the like. , More preferred.

Although the X-ray CT apparatus has been described in the above embodiment, another medical image diagnostic apparatus having a scanner and a gantry (for example, MRI apparatus, positron CT).
It is needless to say that the same effect can be obtained by similarly providing the height adjusting mechanism in the gantry section in the apparatus, the emission CT apparatus, etc.).

[0020]

As described above, in the gantry portion of the medical image diagnostic apparatus according to the present invention, since the height adjustment mechanism of the gantry itself is provided, it is possible to adjust the height of the gantry opening portion for measuring the subject. Accordingly, when performing an IVR procedure with a combination of various medical image diagnostic apparatuses and other apparatuses such as an X-ray imaging apparatus, various images can be obtained without changing the height of the bed on which the examinee rides. Diagnostic measurement is possible, problems such as measurement position displacement of the subject and disconnection of various connection jigs are alleviated, and the work of the doctor performing the treatment is facilitated so that the doctor can concentrate on the treatment.

[Brief description of drawings]

FIG. 1 is an external view showing the operation of an X-ray CT scanner according to the present invention.

FIG. 2 is a diagram showing an internal structure of a scanner according to the present invention.

FIG. 3 is a diagram showing an embodiment of a drive unit for vertical movement of the scanner according to the present invention.

[Explanation of symbols]

 1 X-ray scanner 2 Gantry opening 3 Support part 4 Bed 5 X-ray tube 6 Collimator unit 7 Detector 8 Detection circuit unit 9 Rotation base 10 Rotation bearing 11 Scanner base 31 Rotation shaft 32 Fixing stand 321 Floor fixing part 322 Supporting part Fixed part 323 Hydraulic drive device 324 Guide rod 325 Ball screw 326 Rotation drive device

Claims (1)

[Claims] 1. A medical image diagnostic apparatus having a gantry, wherein a mechanism for adjusting the height position of the gantry section is provided,
A medical image diagnostic apparatus with a height adjustment mechanism, which is capable of adjusting the height of a gantry opening for measuring a subject.