JP2003190136A - X-ray ct system, gantry apparatus and control method therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce noises to be generated during a scan. <P>SOLUTION: A scan plan is inputted from an operation console (S701) and transmitted to a gantry apparatus (S702). When the scan plan is received in the gantry apparatus (S751), an air outlet and an air inlet are closed (S752) and the rotation of a fan is stopped. The gantry apparatus performs the scan on the basis of the received scan plan (S753) and transmits collected projection data to the operation console (S754). Besides, when the scan is finished, the air outlet and the air inlet are opened (S755) and the fan is rotated. The operation console performs image reconstruction processing by using the received projection data (S704) and the tomographic image of a scanned examinee is acquired and displayed (S705). <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to an X-ray CT apparatus, a gantry apparatus, and a control method thereof.

[0002]

2. Description of the Related Art Generally, an X-ray CT apparatus irradiates an object placed on a tabletop with X-rays and transmits X-rays that have passed through the object.
A gantry device for collecting projection data based on dose,
The operation console is configured to perform image reconstruction processing using projection data collected by the gantry device, generate a tomographic image of the subject, and display the tomographic image on a predetermined display unit.

Further, the X-rays are generated from an X-ray tube included in the X-ray tube. Since the X-ray tube generates X-rays by an electron beam of a high voltage (X-ray A detailed description of the generation method is omitted here), and heat is generated at a high temperature. Therefore, conventionally, in order to cool the X-ray tube, by providing an exhaust port in the upper part of the gantry device, an intake port in the lower part, and a fan inside, the operation of constantly replacing the air surrounding the X-ray tube, The X-ray tube was being cooled.

[0004]

The X-ray tube and the detector are integrated (rotating body) to perform an operation (scan) of collecting projection data of the subject from different angles while rotating around the subject. At this time, due to the rotation of the rotating body, a large noise is generated due to the rotation of the bearing or the pulley belt provided on the rotating shaft or the rotation of the rotor inside the X-ray tube. However, as described above, when the exhaust port and the intake port are provided in the gantry device, these noises leak from the exhaust port and the intake port to the outside of the gantry device during scanning,
It causes discomfort to the patient and medical staff.

The present invention has been made to solve the above problems, and an object thereof is to reduce noise generated during scanning.

[0006]

In order to achieve the object of the present invention, for example, an X-ray CT apparatus of the present invention has the following configuration.

That is, an operation console that transmits a scan plan and generates a tomographic image of the subject based on a scan result according to the scan plan, and the subject is scanned according to the scan plan transmitted from the operation console, And a gantry device for transmitting a scan result to the operation console. Further, the gantry device is provided with an intake port and an exhaust port at different positions, and air is taken into the gantry device through the intake port and the exhaust gas is exhausted. An X-ray CT apparatus having a blower means for exhausting air from a mouth, wherein the gantry apparatus has an opening / closing means for opening / closing the exhaust opening and the intake opening, and the opening / closing means according to a timing at which the scan plan is received. Control means for controlling the opening and closing means according to the timing when the scan is completed X-ray CT which is characterized in that it comprises
apparatus.

In order to achieve the object of the present invention, for example, the gantry device of the present invention has the following configuration.

That is, a gantry device for scanning an object according to a scan plan transmitted from an external device and transmitting the scan result to the external device, wherein the gantry device has different intake ports and exhaust ports. A gantry device that is provided at a position and that includes air from the intake port into the gantry device and that has an air blower that exhausts air from the exhaust port, the opening and closing device opening and closing the exhaust port and the intake port, A gantry apparatus, comprising: a control unit that controls the opening / closing unit according to a timing at which the scan plan is received, and controls the opening / closing unit according to a timing at which the scan is completed.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will now be described in detail according to preferred embodiments with reference to the accompanying drawings.

[First Embodiment] FIG. 1 is an external perspective view of a conventional gantry apparatus. A gantry device body (hereinafter, simply gantry device) 100 has a function of collecting (scanning) projection data of a subject (actually, placed on a top plate (not shown)) located in the cavity 103. With
The configuration described below is provided for cooling the X-ray tube.

In the figure, reference numerals 101 and 102 respectively denote an exhaust port and an intake port, which are constituted by, for example, a mesh. Figure 2
1 shows a cross-sectional view of the gantry device 100 shown in FIG.
In FIG. 2, parts other than those necessary for explanation are omitted. Also, the same parts as in FIG. 1 are given the same numbers,
The description is omitted. In FIG. 2, 4 is an X-ray tube including an X-ray tube. A fan 105 is driven by a fan motor described later. When the fan 105 is driven, air enters through the intake port 102 as shown by the white arrow in the figure, passes through the gantry device 100, and is exhausted to the outside of the device through the exhaust port 101. As a result, X in the gantry device 100
It is possible to cool each part including the filament tube. However, when the scan is started, as shown in FIG. 3 which is a cross-sectional view of the gantry apparatus 100 in FIG. 1, the operation sounds (details are as described above) of the respective parts are indicated by the black arrows, and the exhaust port 101, the intake port 10
2 leaks to the outside of the device, which gives discomfort to the subject and medical staff.

FIG. 4 is an external perspective view of the gantry device according to this embodiment. The same parts as those in FIG. 1 are designated by the same reference numerals and the description thereof will be omitted. 11 in the figure
0a, 110b, 110c, 110d are louvers,
The louvers are attached to the exhaust port 101 and operate in conjunction with each other. Specifically, the louvers 110a, 110b, 11
0c and 110d are the axes 111a, 111b and 111, respectively.
It has a mechanism that rotates around c and 111d in the direction of arrow E (a specific mechanism will be described later). Accordingly, as shown in FIGS. 6A and 6B, the exhaust port 101
Can be opened (FIG. 6 (a)) or closed (FIG. 6 (b)). In addition, these louvers are connected to the intake port 1
It is also attached to 02. Although four louvers are used in FIGS. 4 and 6, the number of louvers is not limited to four. The material of the louver is not particularly limited, but any material that exhibits a soundproof effect is suitable.

As described above, the exhaust port 101 and the intake port 10
A louver group is attached to each of the two. However, since the operating mechanism of each louver group is the same, the exhaust port 10
The operation mechanism of the louver group will be described by taking the louver group attached to No. 1 as an example, but the following description is also applied to the operation mechanism of the louver group attached to the intake port 102.

FIG. 5 is a sectional view in the vicinity of the exhaust port 101 of the gantry apparatus 100 shown in FIG. 4, and the same parts as those in FIG.

Reference numeral 104a denotes a louver motor, which is also provided with a V-shaped groove attached to the rotary shaft of the motor by rotating a shaft 500 provided at regular intervals as shown by an arrow F in the figure. The belt 112 having grooves at equal intervals and the shaft 500 are engaged with each other, and the belt 112 is moved in the same manner as the arrow F.
Can be rotated in any direction. Also, each louver 110
a to 110d are provided with shafts 111a to 111d, respectively, in which V-shaped grooves are provided at equal intervals, and by rotating the belt 112, these shafts 111a to 111d and the belt 1 are provided.
12 and the respective louvers 110a-110.
d rotates in the direction of arrow E in the figure. The shafts 111a to 1a
The rotating shaft 11d corresponds to the rotating shafts 400a to 400d described above.

By operating the louver motor 104a by such an operating mechanism, the respective louvers 110a-110a ...
110d can be rotated and opening / closing of the exhaust port can be controlled.

The timing of opening / closing the exhaust port (intake port) is determined depending on whether or not the scan is started, as described above. That is, when the scan starts, noises leak from the respective parts in the gantry device to the outside of the device through the exhaust port and the intake port as described above. Therefore, the exhaust port and the intake port are closed before the scan is started (at the timing when the scan instruction is given to the gantry device). Then, after the scan is finished, the exhaust port and the intake port are opened. The reason for opening the exhaust port and intake port after scanning is that the X-ray tube stores heat during scanning and releases heat after scanning, so if the exhaust port and intake port are closed, heat will accumulate in the gantry device, X
This is because it will hinder each part in the gantry device including the filament tube. Therefore, after the scan, the exhaust port and the intake port are opened, and the fan is operated to cool each part including the X-ray tube.

FIG. 8 is a block diagram of the X-ray CT apparatus according to this embodiment. As shown in the figure, the X-ray CT apparatus has a gantry apparatus 10 integrally attached with an X-ray detection mechanism for irradiating the object with X-rays and detecting X-rays transmitted through the object.
0 and various operation settings for the gantry apparatus 100, and an operation console 200 for reconstructing and displaying an X-ray tomographic image based on the data output from the gantry apparatus 100.

The gantry device 100 has the following configuration including the main controller 1 that controls the entire device.

Reference numeral 2 denotes an interface for communicating with the operation console 200, and 3 conveys an object (object) lying on a table (top plate) 12 (hereinafter also referred to as a z-axis in a direction perpendicular to the drawing). ), A gantry having a cavity for performing X), and an X-ray tube 4 (driving-controlled by an X-ray tube controller 5) including an X-ray tube (not shown) which is an X-ray generation source, X Aperture 6 having a slit for defining an irradiation range of a line, and a motor 7a that is a slit width adjusting motor for defining an X-ray irradiation range of the aperture 6.
Is provided. The driving of the motor 7a is controlled by the aperture controller 7.

Further, the gantry 3 has the X-ray that has passed through the subject.
It also includes an X-ray detection unit 8 for detecting rays and a data collection unit 9 for collecting projection data obtained from the transmitted X-rays obtained by the X-ray detection unit 8. The X-ray tube 4 and the aperture 6, and the X-ray detection unit 8 are provided so as to face each other with the cavity portion sandwiched therebetween, that is, with the subject in-between, and rotate around the gantry 3 in a state where the relationship is maintained. It is designed to move.
This rotation is performed by the rotary motor 10 driven by a drive signal from the motor controller 11. Further, the table 12 on which the subject is placed is transported in the z-axis direction, and its drive is performed by the table motor 13.

The fan 105 described above is the fan motor 10
6, the fan motor 106 is driven and controlled by the fan motor controller 107. The louver 110 (112) is the louver motor 104 as described above.
The louver motor is driven by (113) (rotation of the louver is performed by driving the louver motor via a belt (not shown) as described above), and drive control of the louver motor 104 (113) is performed by the louver motor controller 108 (114). .

The main controller 1 analyzes various commands received via the interface 2, and based on that, analyzes the X-ray tube controller 5, aperture controller 7, motor controller 11, table motor controller 14, louver motor controller 108. ，
Various control signals are output to the 114, the fan motor controller 107, and the data collection unit 9. The main controller 1 also performs a process of transmitting the projection data collected by the data collection unit 9 to the operation console 200 via the interface 2.

The operation console 200 is a so-called workstation, and as shown in the figure, a CPU 51 that controls the entire apparatus, a ROM 52 that stores a boot program, and a RAM 53 that functions as a main storage device.
In addition, the following configuration is provided.

The HDD 54 is a hard disk device, and in addition to the OS, a program for giving various instructions to the gantry device 100 and reconstructing an X-ray tomographic image based on the data received from the gantry device 100 ( The image reconstruction program) is stored. VRAM55
Is a memory for expanding the image data to be displayed. By expanding the image data etc. here, the CRT
56 can be displayed. Reference numerals 57 and 58 are a keyboard and a mouse for making various settings. Reference numeral 59 is an interface for communicating with the gantry device 100.

X in the present embodiment having the above configuration
The processing performed by the line CT apparatus will be described below with reference to the flowchart of the processing shown in FIG. 7.

First, a scan plan is input using the keyboard 57 or the mouse 58 of the operation console 200 (step S701). Specifically, the scan range, slice thickness, etc. are input. Then, the input scan plan is transmitted to the gantry device 100 (step S70).
2). When the gantry device 200 receives the scan plan transmitted from the operation console 200 (step S75)
1) First, the main controller 1 transmits an instruction to close the exhaust port 101 and the intake port 102 to the louver motor controllers 108 and 114, and the louver motor controller 10
Reference numerals 8 and 114 drive and control the louver motors 104 and 113, respectively, to rotate the louvers 110 and 112 via a belt (not shown), and close the exhaust port 101 and the intake port 102 (step S752). The control for rotating the louver and closing the exhaust port and the intake port is as described above. Further, the main controller 1 transmits a rotation control instruction of the fan 5 to the fan motor controller 107, and the fan motor controller 107 controls the fan motor 106 so as to stop the rotation of the fan 105. As a result, the rotation of the fan 105 is stopped. In addition, this fan 10
The rotation control of 5 is not essential.

Then, scanning is performed based on the received scan plan (step S753). Then, the projection data collected by scanning is transmitted to the operation console 200 (step S754). When the scan is completed, the main controller 1 causes the louver motor controllers 108 and 114 to connect the exhaust port 101 and the intake port 102.
Send the instruction to open the louver motor controller 10
Reference numerals 8 and 114 respectively drive and control the louver motors 104 and 113 to rotate the louvers 110 and 112, respectively.
1. Open the intake port 102 (step S755). The control for rotating the louver and opening the exhaust port and the intake port is as described above. Further, the main controller 1 transmits a rotation control instruction for the fan 5 to the fan motor controller 107, and the fan motor controller 107 controls the fan motor 106 to rotate the fan 105. As a result, the fan 105 rotates.

Upon receiving this projection data (step S703), the operation console 200 performs an image reconstruction process using this projection data (step S704), obtains a tomographic image of the scanned object, and displays it on the CRT 56. (Step S705).

As described above, the X-ray CT apparatus according to this embodiment is provided with an opening / closing mechanism for the exhaust port and the intake port using a louver, and the exhaust port and the intake port are closed during scanning to leak outside from the gantry device. Noise can be reduced, and after scanning, each part such as the X-ray tube can be cooled by opening the exhaust port and the intake port and controlling the rotation of the fan.

[Second Embodiment] The switch light of the exhaust port and the intake port of the gantry device is not limited to the louver described in the first embodiment. In this embodiment, an opening / closing mechanism for an exhaust port and an intake port different from the first embodiment is shown.

FIG. 9 shows an example of an opening / closing mechanism for the exhaust port and the intake port. FIG. 9 is a sectional view of the vicinity of the exhaust port and the intake port in the gantry device. Reference numerals 901a and 901b denote pulleys that are rotated by rotary motors (not shown), and rotate in the same direction and in the arrow F direction in the figure. 902 is a wire,
As the pulleys 901a and 901b rotate, they rotate in the arrow F direction. A plate 903 (any material may be used as long as it has a soundproof effect) is fixed to the wire 902, and the plate 903 moves in parallel in the direction H in FIG.

Thus, the exhaust port and the intake port can be opened and closed by moving the plate 903 in the direction of the arrow H through the wire 902 by the rotation of the pulleys 901a and 901b. Further, since the plate 903 is attached for the purpose of completely blocking the exhaust port and the intake port, the width of the plate 903 is equal to or larger than the width L of the exhaust port and the intake port. 9
Reference numeral 04 is a guide for instructing the plate 903.

FIG. 10 shows another example of the opening / closing mechanism for the exhaust port and the intake port. FIG. 10 is a sectional view of the vicinity of the exhaust port and the intake port of the gantry device. In the figure, 1001a, 1
Reference numerals 001b denote pulleys that are rotated by rotary motors (not shown), and rotate in the same direction, that is, in the direction of arrow F in the figure. 1002 is a wire, and pulleys 1001a and 1001
With the rotation of 1b, it rotates in the direction of arrow F. Wire 1
One end of a bellows 1003 (any material, but any material that can provide a soundproof effect is suitable) is fixed to 002. Further, since the other end of the bellows is fixed to the gantry device 100, one end of the bellows 1003 fixed to the wire 1002 moves in parallel in the H direction in the figure as the wire 1002 rotates.

As a result, the pulleys 1001a and 1001
The rotation of b causes the bellows 1003 via the wire 1002.
By translating one end of arrow in the direction of arrow H,
You can open and close the intake port. Further, since the bellows 1003 is attached for the purpose of completely blocking the exhaust port and the intake port, the length when the bellows 1003 is fully extended is equal to or larger than the width L of the exhaust port or the intake port. is there.

The opening and closing timings of the exhaust port and the intake port shown in the above two examples are the same as in the first embodiment.

[Third Embodiment] As an explanation in the first embodiment, the exhaust port and the intake port are unconditionally performed after the scan is finished, but the present invention is not limited to this. That is, a temperature sensor may be provided in the gantry device, and the exhaust port and the intake port may be opened when the temperature sensor detects a predetermined temperature or higher.

Further, an object of the present invention is to supply a storage medium (or recording medium) recording a program code of software for realizing the functions of the above-described embodiments to a system or apparatus, and to supply a computer of the system or apparatus ( Alternatively, it can be realized by reading and executing the program code stored in the storage medium by the CPU or MPU. In this case, the program code itself read from the storage medium realizes the functions of the above-described embodiments, and the storage medium storing the program code constitutes the present invention. Further, the computer (operation console) executes the read program code so that not only the functions of the above-described embodiments are realized, but also the operating system running on the computer based on the instruction of the program code ( (OS) etc. perform a part or all of the actual processing, and the processing realizes the functions of the above-described embodiments.

When the present invention is applied to the above storage medium, the storage medium stores the program code corresponding to the above-mentioned (a part or all of the flowchart shown in FIG. 2).

As a storage medium for storing such a program code, for example, a floppy (registered trademark) disk, a hard disk, an optical disk, a magneto-optical disk, C
D-ROM, magnetic tape, non-volatile memory card, R
OM or the like can be used. Further, it may be downloaded via a medium such as a network (for example, the Internet).

[0042]

As described above, according to the present invention, noise generated during scanning can be reduced.

[Brief description of drawings]

FIG. 1 is an external perspective view of a conventional gantry device.

FIG. 2 is a cross-sectional view of the gantry device shown in FIG.

FIG. 3 is a sectional view of the gantry device shown in FIG.

FIG. 4 is an external perspective view of the gantry device according to the first embodiment of the present invention.

5 is a cross-sectional view of the vicinity of an exhaust port of the gantry device shown in FIG.

FIG. 6 is a diagram showing how an exhaust port is opened and closed.

FIG. 7 is a flowchart of a process in which the X-ray CT apparatus according to the first embodiment of the present invention performs scanning.

FIG. 8 is a block configuration diagram of an X-ray CT apparatus according to the first embodiment of the present invention.

FIG. 9 is a sectional view of the vicinity of an exhaust port and an intake port in the gantry device.

FIG. 10 is a sectional view of the vicinity of an exhaust port and an intake port in the gantry device.

Continued front page    (72) Inventor Kazuhiko Hayakawa             127, 4-7 Asahigaoka, Hino City, Tokyo             GE Yokogawa Medical System Co., Ltd.             Within (72) Inventor Nosei Masaru             127, 4-7 Asahigaoka, Hino City, Tokyo             GE Yokogawa Medical System Co., Ltd.             Within F term (reference) 4C093 AA22 CA50 EC45 FA43 FA58                       FA60

Claims (34)

[Claims] 1. An operation console that transmits a scan plan and generates a tomographic image of the subject based on a scan result according to the scan plan, and scans the subject according to the scan plan transmitted from the operation console. And a gantry device for transmitting a scan result to the operation console, wherein the gantry device is provided with an intake port and an exhaust port at different positions, and air is taken into the gantry device from the intake port and the exhaust gas is exhausted. An X-ray CT apparatus including an air blowing unit that exhausts air from a mouth, wherein the gantry device opens and closes the exhaust port and the intake port, and the opening and closing unit according to a timing when the scan plan is received. And a control means for controlling the opening / closing means according to the timing when the scan is completed. X-ray CT apparatus according to claim Rukoto. 2. The X-ray CT apparatus according to claim 1, wherein the blower unit is composed of one or more fans. 3. The X-ray CT apparatus according to claim 1, wherein the opening / closing means is provided at each of the exhaust port and the intake port. 4. The control means controls the opening / closing means in response to the timing at which the scan plan is received to close the exhaust port and the intake port, and opens / closes the opening / closing means in accordance with the timing at which the scan is completed. The X-ray CT apparatus according to any one of claims 1 to 3, wherein the exhaust port and the intake port are opened by controlling. 5. The control means further stops the operation of the fan in response to the timing of receiving the scan plan, and operates the fan in response to the timing of ending the scan. X described in
X-ray CT equipment. 6. The control means further comprises a detection means for detecting the temperature in the gantry apparatus, the operation of the fan is stopped in accordance with the timing at which the scan plan is received, the scan ends, and The X-ray CT apparatus according to claim 4, wherein the fan is operated when the detection unit detects a temperature equal to or higher than a predetermined temperature. 7. The opening / closing means is composed of a plurality of louvers, and the control means opens / closes the exhaust port and the intake port by rotating the plurality of louvers. X-ray C according to any one of 6
T device. 8. The opening / closing means is composed of a plate, and the control means opens / closes the exhaust port and the intake port by moving the plate in parallel. The X-ray CT apparatus according to item 1. 9. The opening / closing means is configured by a bellows, one end of the bellows is fixed to the gantry device, and the control means translates the other end of the bellows to move the exhaust port. The X-ray C according to any one of claims 1 to 6, wherein the intake port is opened and closed.
T device. 10. A gantry device for scanning a subject according to a scan plan transmitted from an external device and transmitting the scan result to the external device, wherein the gantry device has different intake ports and exhaust ports. A gantry device that is provided at a position and that includes air from the intake port into the gantry device and that has a blower unit that exhausts air from the exhaust port, the opening and closing unit opening and closing the exhaust port and the intake port, A gantry apparatus, comprising: a control unit that controls the opening / closing unit according to a timing at which the scan plan is received, and controls the opening / closing unit according to a timing at which the scan is completed. 11. An operation console that transmits a scan plan and generates a tomographic image of the subject based on a scan result according to the scan plan, and scans the subject according to the scan plan transmitted from the operation console, And a gantry device that sends a scan result to the operation console.The gantry device further includes an intake port and an exhaust port at different positions, and takes in air from the intake port into the gantry device.
X-ray C provided with a blower for exhausting air from the exhaust port
A method for controlling the T device, wherein the method for controlling the gantry device includes an opening / closing step of opening / closing the exhaust port and the intake port, and controlling the opening / closing step in accordance with a timing at which the scan plan is received. And a control step of controlling the opening / closing step according to the timing when the scan is completed. 12. The control process controls the opening / closing process according to the timing at which the scan plan is received, thereby closing the exhaust port and the intake port, and performing the opening / closing process according to the timing at which the scan ends. The method for controlling an X-ray CT apparatus according to claim 11, wherein the exhaust port and the intake port are opened by controlling. 13. The control step further comprises: stopping the operation of the fan according to the timing of receiving the scan plan, and operating the fan according to the timing of ending the scan. A method for controlling an X-ray CT apparatus according to claim 1. 14. The control step further comprises a detection step of detecting the temperature inside the gantry apparatus, the operation of the fan is stopped in accordance with the timing when the scan plan is received, the scan ends, and The control method of the X-ray CT apparatus according to claim 12, wherein the fan is operated when a temperature higher than a predetermined temperature is detected in the detection step. 15. The opening / closing step is an opening / closing step by a plurality of louvers, and in the control step, the exhaust port and the intake port are opened / closed by rotating the plurality of louvers. 15. The method for controlling an X-ray CT apparatus according to any one of 11 to 14. 16. The opening / closing step is an opening / closing step using a plate, and in the control step, the exhaust port and the intake port are opened / closed by moving the plate in parallel. The method for controlling the X-ray CT apparatus according to any one of items. 17. The opening / closing step is an opening / closing step using a bellows, and further, one end of the bellows is fixed to the gantry device, and the other end of the bellows is translated in the control step, whereby the exhaust gas is exhausted. 15. A method for controlling an X-ray CT apparatus according to claim 11, further comprising opening and closing a mouth and the air intake. 18. A gantry device that scans a subject according to a scan plan transmitted from an external device and transmits the scan result to the external device, wherein the gantry device has different intake ports and exhaust ports. A method for controlling a gantry device, which is provided at a position, and which includes a blower unit for taking air into the gantry device from the intake port and exhausting air from the exhaust port, the opening / closing process for opening / closing the exhaust port and the intake port Control of the gantry device comprising: a step, and a control step of controlling the opening / closing step according to the timing of receiving the scan plan, and controlling the opening / closing step according to the timing of ending the scan. Method. 19. An operation console that transmits a scan plan and generates a tomographic image of the subject based on a scan result according to the scan plan; and a subject is scanned according to the scan plan transmitted from the operation console. And a gantry device for transmitting a scan result to the operation console, wherein the gantry device is provided with an intake port and an exhaust port at different positions, and air is taken into the gantry device from the intake port and the exhaust gas is exhausted. A program for executing a control method for an X-ray CT apparatus having a blower unit for exhausting air from a mouth, the program for executing the control method for the gantry apparatus includes an opening / closing step of opening / closing the exhaust port and the intake port. The program and the opening / closing process are controlled according to the timing when the scan plan is received. Program for executing a control method of the X-ray CT apparatus characterized by in response to the timing at which the scan is completed and a program of the control process of controlling the opening and closing process. 20. The program of the control process controls the opening / closing process according to the timing at which the scan plan is received, thereby closing the exhaust port and the intake port, and opening / closing according to the timing at which the scan is completed. The program for executing the control method of the X-ray CT apparatus according to claim 19, wherein the exhaust port and the intake port are opened by controlling a process. 21. The program of the control step further stops the operation of the fan according to the timing of receiving the scan plan, and operates the fan according to the timing of ending the scan. A program for executing the control method of the X-ray CT apparatus according to Item 20. 22. The program of the control step further comprises a program of a detection step of detecting the temperature in the gantry apparatus, the operation of the fan is stopped according to the timing when the scan plan is received, and the scan is completed. The program for executing the method of controlling an X-ray CT apparatus according to claim 20, wherein the fan is operated when a temperature higher than a predetermined temperature is detected in the detection step. 23. The program of the opening / closing process is a program of the opening / closing process using a plurality of louvers, and the program of the control process opens / closes the exhaust port and the intake port by rotating the plurality of louvers. A program for executing the method for controlling an X-ray CT apparatus according to any one of claims 19 to 22. 24. The opening / closing process program is a plate opening / closing process program, and the control process program opens / closes the exhaust port and the intake port by moving the plate in parallel. Claims 19 to 22
A program for executing the method for controlling the X-ray CT apparatus according to any one of 1. 25. The program for the opening / closing process is a program for the opening / closing process using a bellows, wherein one end of the bellows is fixed to the gantry device, and the program for the control process moves the other end of the bellows in parallel. By letting
The program for executing the control method of the X-ray CT apparatus according to claim 19, wherein the exhaust port and the intake port are opened and closed. 26. A gantry device for scanning a subject according to a scan plan transmitted from an external device and transmitting the scan result to the external device, wherein the gantry device has different intake ports and exhaust ports. A program for executing a control method of a gantry device, which is provided at a position, and which introduces air into the gantry device from the intake port and exhausts air from the exhaust port, the program comprising the exhaust port and the intake port. And a control process program for controlling the opening / closing process according to the timing at which the scan plan is received and controlling the opening / closing process according to the timing at which the scan ends. A program for executing a method for controlling a gantry device, characterized by: 27. An operation console that transmits a scan plan and generates a tomographic image of the subject based on a scan result according to the scan plan, and scans the subject according to the scan plan transmitted from the operation console. And a gantry device for transmitting a scan result to the operation console, wherein the gantry device is provided with an intake port and an exhaust port at different positions, and air is taken into the gantry device from the intake port and the exhaust gas is exhausted. A computer-readable storage medium that stores a program that executes a method for controlling an X-ray CT apparatus that includes a blowing unit that exhausts air from a mouth, and the program that executes the method for controlling the gantry apparatus is the exhaust gas. Opening and closing process program to open and close the intake port, and the type of program that received the scan plan. Controls the opening and closing process in accordance with the packaging, storage medium, comprising a program of the control process of controlling the opening and closing process in accordance with the timing at which the scan is completed. 28. The program of the control process controls the opening / closing process according to the timing at which the scan plan is received, thereby closing the exhaust port and the intake port, and opening / closing according to the timing at which the scan ends. The storage medium according to claim 27, wherein the exhaust port and the intake port are opened by controlling a process. 29. The program of the control step further stops the operation of the fan according to the timing of receiving the scan plan, and operates the fan according to the timing of ending the scan. Item 29. A storage medium according to item 28. 30. The control step program further comprises a detection step program for detecting the temperature in the gantry apparatus, wherein the operation of the fan is stopped according to the timing when the scan plan is received, and the scan ends. 29. The storage medium according to claim 28, wherein the fan is operated when a temperature equal to or higher than a predetermined temperature is detected in the detection step. 31. The program of the opening / closing process is a program of the opening / closing process using a plurality of louvers, and the program of the control process opens / closes the exhaust port and the intake port by rotating the plurality of louvers. The storage medium according to any one of claims 27 to 30, wherein the storage medium is a storage medium. 32. The opening / closing process program is a plate opening / closing process program, and the control process program opens / closes the exhaust port and the intake port by moving the plate in parallel. Claims 27 to 30
The storage medium according to any one of 1. 33. The program for the opening / closing step is a program for the opening / closing step by using a bellows, wherein one end of the bellows is fixed to the gantry device, and the program for the controlling step moves the other end of the bellows in parallel. By letting
The storage medium according to any one of claims 27 to 30, wherein the exhaust port and the intake port are opened and closed. 34. A gantry device that scans an object according to a scan plan transmitted from an external device and transmits the scan result to the external device, wherein the gantry device has different intake ports and exhaust ports. A computer-readable storage medium that stores a program for executing a control method of a gantry device that is provided at a position and that has a blowing means that takes in air into the gantry device from the intake port and exhausts air from the exhaust port. A program for an opening / closing process for opening / closing the exhaust port and the intake port, and controlling the opening / closing process according to the timing at which the scan plan is received, and the opening / closing process according to the timing at which the scan ends. And a control process program for controlling the storage medium.