KR101679513B1 - pressure device for reducing the movement of abdomen, device for controlling the remaining movement of abdomen and radiation treatment system - Google Patents

Abstract

The present invention relates to a pressure device for reducing abdominal movement, and a device and a system for controlling residual abdominal movement. More specifically, the present invention relates to an integration system capable of monitoring the residual abdominal movement by using a gas pressure sensor while minimizing the abdominal movement by using an abdomen pressure device. The device for reducing abdominal movement includes: an abdomen fixing unit configured to press at least a part of a patients abdomen exposed to radiation to minimize the movement; a breath monitoring unit configured to monitor a change in breathing of the patient through a gas pressure sensor which senses a spouting degree of gas from a first region after introducing the gas into the first region; a control unit configured to determine that residual movement exists in the patients abdomen when the change in the patients breath is out of a preset range; and a display unit configured to display guide information to allow the patient to control his or her abdomen in accordance with the control of the control unit.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pressure device for reducing abdominal motion and a device and system for residual abdominal motion control during radiation therapy,

The present invention relates to a compression device for abdominal motion reduction during radiation therapy, and an apparatus and system for residual abdominal motion control. More particularly, the present invention relates to an integrated system capable of minimizing the movement of the abdomen using abdominal pressure equipment and monitoring the residual movement of the abdomen using a gas pressure sensor.

One of the biggest problems to be solved in cancer treatment of thoracic / abdominal organs using radiation is the control of movement of the tumor by respiration.

In order to solve the above problem, methods such as a tumor tracking technique for irradiating a radiation beam along with the movement of the tumor by breathing and a tumor gating technique for irradiating the tumor when the tumor is in a specific position are used have.

However, due to lack of validation of technical limits and accuracy, it is a reality that clinical use is limited.

Currently, the most widely used method for controlling the motion of the tumor by breathing is the abdominal motion control technique using the negative pressure device.

However, many studies have reported that the residual movement of the abdomen occurs in spite of using the abdominal compression device, and that the abdominal motion can not be properly controlled due to the incompatibility with existing breathing monitoring equipment There is a problem.

Therefore, there is a need for measures to solve such problems.

International Application Number (PCT / EP2007 / 051044): Medical Robot System with Cylindrical Coordinate Type Operation Arm

It is an object of the present invention to provide an integrated system capable of minimizing the movement of the abdomen using abdominal compression equipment and monitoring the residual movement of the abdomen using a gas pressure sensor.

Specifically, the present invention minimizes movement of the abdominal region through the abdominal compression device, and then performs trekking treatment to irradiate a beam of radiation while monitoring the residual movement of the abdomen using a gas pressure sensor And a system for controlling the residual abdominal motion of the patient himself by visually feedbacking the residual abdominal motion of the abdomen to the patient using a goggle type monitoring device.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are not restrictive of the invention, unless further departing from the spirit and scope of the invention as defined by the appended claims. It will be possible.

According to an aspect of the present invention, there is provided an abdominal motion reducing apparatus comprising: a abdominal immobilizing unit that applies pressure to at least a part of a patient abdomen receiving radiation to minimize movement; A respiration monitoring unit for monitoring a change in respiration of the patient through a gas pressure sensor for inputting gas into the first region and sensing a degree of the injected gas being ejected from the first region; A controller for determining that there is residual motion of the patient's abdomen when the respiration change of the patient is out of a preset range; And a display unit for displaying information for guiding the patient to control the motion of the patient's abdomen under the control of the controller.

Also, the display unit may be a head mounted display including an optical module for transmitting image light to the eye of the patient.

In addition, the control unit may control the display unit to display information for guiding the patient's breathing cycle.

In addition, the control unit may control the display unit to display information for guiding the user to change the position of the body to a desired position.

The controller may further include an alarm unit for outputting a signal to the outside under the control of the controller when it is determined that there is residual motion of the patient's abdomen.

The control unit controls the display unit to display information for guiding the breathing period of the patient and displays the intensity of the signal output through the alarm unit according to the degree to which the breathing cycle of the patient is mapped to the guide period Can be adjusted.

The controller may control the display unit to display information for guiding the user to change the position of the body to a position desired by the patient and display the information on the basis of the degree of mapping of the position of the patient to the guided position. The intensity of the signal output through the alarm unit can be adjusted.

The display unit may further display respiration change information of the patient acquired through the respiration monitoring unit.

According to another aspect of the present invention, there is provided a method of reducing abdominal motion, the method comprising: compressing at least a portion of a patient's abdomen receiving radiation to minimize movement; Monitoring a respiratory change of the patient through a gas pressure sensor that injects gas into the first region and senses the extent to which the injected gas is ejected from the first region; Determining that there is a residual motion of the patient's abdomen when the respiratory change of the patient is out of a predetermined range; And displaying information for guiding the patient to control the motion of the patient's abdomen.

Further, the information may be information for guiding a period in which the patient breathes.

In addition, the information may be information that guides the patient to change the position of the body to a desired position.

The method may further include outputting a signal to the outside when it is determined that residual motion of the patient's abdomen exists.

In addition, the information is information for guiding the breathing period of the patient, and the intensity of the output signal may be adjusted according to the degree to which the respiration period of the patient is mapped to the guided period.

In addition, the information is information for guiding the position of the body to a position desired by the patient, and the strength of the output signal is adjusted according to the degree to which the position of the patient is mapped to the guided position .

In addition, the information and the acquired breath change information of the patient can be displayed together.

The present invention can provide a user with an integrated system capable of minimizing the movement of the abdomen using abdominal compression equipment and monitoring the residual movement of the abdomen using a gas pressure sensor.

Specifically, the present invention minimizes movement of the abdominal region through the abdominal compression device, and then performs trekking treatment to irradiate a beam of radiation while monitoring the residual movement of the abdomen using a gas pressure sensor And provide the user with a system for controlling the residual abdominal motion of the patient himself by visually feedbacking residual abdominal motion of the abdomen to the patient using goggle type monitoring equipment.

The main purpose of the current commercial abdominal compression device is to remain in the abdomen's compression itself and to treat it under the assumption that there is no residual motion, or if there is residual motion, the range of irradiation is widened. However, many studies have shown that the abdominal residual motion is not negligible, and it requires appropriate measures. In addition, when the abdominal pressure device is used, it is impossible to use the existing commercialized respiration monitoring equipment, and the connection with the breathing intervention treatment is very poor. When the equipment developed through the present invention is used, compatibility with respiratory correlated radiation therapy can be established while maintaining the merits of the conventional compression device, and thus it can be used commercially in a very valuable manner.

The effects obtained by the present invention are not limited to the above-mentioned effects, and other effects not mentioned can be clearly understood by those skilled in the art from the following description will be.

Figures 1a and 1b show a specific example of a compression device used to reduce abdominal motion during radiation therapy.
Fig. 2 shows another example of a conventional pressing device for solving the problems of Figs. 1A and 1B.
3 is a block diagram for explaining a concrete configuration of an integrated system proposed by the present invention.
FIG. 4 illustrates an exemplary embodiment of the integrated system according to the present invention shown in FIG.
5A is a cross-sectional view schematically illustrating a concept of a conventional head-mounted display device in which an external image and a virtual screen are simultaneously provided to realize an augmented reality applicable to the integrated system of the present invention.
FIG. 5B illustrates a specific example of a Google Glass placed on the upper part of a user's eye in order to minimize visual disturbance, which is applied to the integrated system of the present invention.
FIG. 6 is a flowchart illustrating a specific process in which radiation therapy is performed through the configuration of the integrated system of the present invention.

A balloon - type blanket was designed to cover the entire abdomen and the lower lobe of the lungs as a device to fix and reproduce the patient 's posture on the treatment plate during radiotherapy. By injecting air into the blanket and increasing the pressure on the abdomen, the abdominal fixation device is fixed which mechanically reduces pressure on the lower abdomen of the patient's abdomen and lungs to reduce movement of the diaphragm.

Further, the device can be fixed to the treatment plate, and at the same time, can support the fixture which is shaped to conform to the body shape of the patient, and includes both side fixation members that can be detached from the treatment plate.

The present invention relates to an apparatus for fixing and reproducing a patient's posture on a treatment plate during a radiation treatment of a patient with a radiation treatment apparatus, and particularly relates to a device for radiologically treating the thorax and abdomen of a patient, To the apparatus.

Radiation therapy is almost indispensable in the treatment of lung, breast and liver cancer. Since most tumors are close to major organs such as lung tissue, vertebrae, kidneys, and bowel, it is necessary to concentrate high doses of radiation only at the tumor site and to minimize the exposure of major organs. In addition, since radiation treatment is not completed by only one treatment but is performed several times, it is necessary to keep the patient's posture constantly reproducible at every time when the radiation treatment is performed so that the radiation can be concentrated on the necessary target site.

In this way, the problem of uncertainty of position reproduction in the patient's motion and split treatment during radiotherapy is renewed, and it is necessary to fix the patient accurately. Moreover, there is a need for accurate three-dimensional stereolithography, Therapeutic fixation devices with better performance in the field of radiotherapy are needed because it is difficult to obtain satisfactory results if the target moves during radiotherapy or if the patient's positional reproducibility is not accurate. When the positioning error of the patient can be minimized, a better fixation device is needed in the field of radiotherapy. This is because when the positioning error of the patient can be minimized, the effect of radiation therapy can be maximized.

In particular, the target in the chest and abdomen is one of the areas where the motion is considerably large due to respiration, but it is difficult to fix, and the movement of the target and the movement of the organs must be considered together. Do.

One of the biggest problems to be solved in cancer treatment of thoracic / abdominal organs using radiation is the control of movement of the tumor by respiration.

In order to solve the above problem, methods such as a tumor tracking technique for irradiating a radiation beam along with the movement of the tumor by breathing and a tumor gating technique for irradiating the tumor when the tumor is in a specific position are used have.

However, due to lack of validation of technical limits and accuracy, it is a reality that clinical use is limited.

Currently, the most widely used method for controlling the motion of the tumor by breathing is the abdominal motion control technique using the negative pressure device.

Figures 1a and 1b show a specific example of a compression device used to reduce abdominal motion during radiation therapy.

However, it has been reported that the abdominal compression apparatus shown in FIGS. 1A and 1B generates a significant amount of residual movement of the abdomen, and it is impossible to control the residual abdominal motion due to the incompatibility with the existing breathing monitoring apparatus Lt; / RTI >

To solve this problem, the restoring pressure device of Fig. 2 can be applied.

Fig. 2 shows another example of a conventional pressing device for solving the problems of Figs. 1A and 1B.

The apparatus is characterized in that the inflatable blanket 11 and the inflatable blanket 11 are fixed to the treating plate 3 with the pressing member 1 pressing the abdomen of the patient, Side fixing members 23 for supporting the fixing frame 4, which is shaped in accordance with the body shape of the patient in the state of being fixed. The pressure member 1 manufactured in this manner minimizes the movement of the patient by breathing and prevents the movement of the patient by the long-term treatment, thereby realizing a reproducible posture.

The blanket 11, which is a representative part of the pressing member 1, should press the abdomen of the patient moving up and down by the respiration and the lower portion of the chest, so that the material of the blanket 11 is preferably thinner on the lower side than on the upper side Do. As a result, when air is injected into the balloon-shaped blanket 11, it can be inflated further downward to push and fix the abdomen of the patient. In addition, by making the balloon-shaped blankets 11 of a transparent material, it is possible to see the irradiation surface, the crosshair, and the distance display scale on the patient's skin.

The width of the balloon-shaped blankets 11 was generally 80 cm to fit the patient's body. In detail, since the upper and lower movements of the patient's abdomen are fixed, the portions to be wrapped around both sides of the patient's body, that is, the side portion of the patient lying down with the supine, do not need to be inflated, More.

Therefore, the portion of 15 cm at both ends is added with efficiency so as to inflate only the 50 cm portion in the center by using the thin material 11a so as not to inflate. The length of the blanket (11) was set to 30 cm in order to allow only the abdominal part with the greatest movement by respiration and the lower part of the lung to be pressed. These widths and lengths can be manufactured in various sizes, and can be manufactured in various sizes, such as according to the patient.

The duct 13 connected to the upper surface of the balloon-shaped blanket 11 is provided with a valve 14 for controlling the air blowing in and out of the blanket 11, a barometer 15 for controlling the pressure inside the blanket 11, And a pump 16 for supplying air is attached to the blanket 11 so that they can be removed from the blanket 11 after the air injection into the blanket 11 is completed and the pressure in the blanket is checked and adjusted. .

Shaped blanket 11 is attached through three holes 12 at both ends of the balloon-type blanket 11 to the support base 21 having three T-shaped rings 22 attached thereto by a screw-shaped fixing element 61 having a round cross- . A female thread is formed in the inside of the T-shaped ring of the support base 21 so as to be fastened to a male thread portion formed in the fixing element 61 passing through the hole 12 of the blanket 11. The three T-shaped rings are adapted to be fitted and fixed in the three holes 24 of the L-shaped both-side fixing member 23, and the two side-surface fixing members 23 are fixed to the screw- Can pass through the two holes 24 in the fixing member 23 and can be fixed to the treatment plate 3. The fixing element 62 formed of male or female portions is passed through the hole 24 in the both side fixing members 23 and is fastened and fixed to the fixing hole 63 formed as the female thread portion in the treatment plate 3. [

The preferred shape of the stationary element 6 may be a bar-shaped bar. In FIG. 1, the sectional shape of the bar material is shown as a circle, but it is not limited to this, and it may have a polygonal shape such as a triangle or a square. The material of the fixing element 6 preferably has a suitable strength such as acetal, but uses a polymer which absorbs less radiation.

The fixing member 23 preferably has a thickness of about 3 cm in consideration of radiation being attenuated in a range of a size that can be fixed, and acrylic can be used as a material.

The fixed frame 4 is made of a vacuum cushion or a polyurethane foam so that the patient can be fixed according to the body shape of the patient and can be fixed to the patient in various sizes such as the whole body or for the thorax and abdomen only Can be used.

The abdominal pressure device shown in FIG. 2 has a problem in that it is difficult to treat the portion where the screw is pressed and its periphery, and the radiation is attenuated due to the plastic screw, The portion of the abdomen that presses the abdomen is in the form of a solid plate, so that when the abdomen of the patient is pressed, the patient can feel the pain.

However, the abdominal compression device shown in FIG. 2 does not consider the residual movement of the abdomen and can not be compatible with the existing breathing monitoring device. Therefore, there is still a problem that the residual abdominal motion can not be properly controlled.

Accordingly, the present invention proposes to the user an integrated system capable of minimizing the movement of the abdomen using abdominal pressure equipment and monitoring the residual movement of the abdomen using a gas pressure sensor.

Specifically, the present invention minimizes movement of the abdominal region through the abdominal compression device, and then performs trekking treatment to irradiate a beam of radiation while monitoring the residual movement of the abdomen using a gas pressure sensor And a system for controlling the residual abdominal motion of the patient himself by visually feedbacking the residual abdominal motion of the abdomen to the patient using a goggle type monitoring device.

3 is a block diagram for explaining a concrete configuration of an integrated system proposed by the present invention.

FIG. 4 illustrates an example of the integrated system according to the present invention.

Referring to FIG. 3, the integrated system 100 proposed by the present invention may include a abdomen compressing unit 110, a breathing monitoring unit 120, a display unit 130, and a control unit 140.

First, as described above with reference to Figs. 1A and 2, the abdomen compressing unit 110 is one of the parts in which the movement in the chest and the abdomen is considerably large due to respiration, but hardly fixed, Since the movement of the organ should be taken into consideration, it is a device that can position the patient accurately and reproducibly.

Next, the respiration monitoring unit 120 is a device for obtaining the residual movement of the abdomen with respect to the respiration in the abdomen fixed by the abdomen compressing unit 110 using a gas pressure sensor.

Also, the display unit 130 can support the user to move his / her body to a desired position when the user is out of a desired position using the information acquired by the respiration monitoring unit 120.

The display unit 130 displays (outputs) the information processed in the integrated system 100. For example, when the integrated system 100 is in an operation mode, a UI (User Interface) or a GUI (Graphic User Interface) associated with the operation is displayed. The display unit 130 may display a captured image and / or a received image, a UI, and a GUI.

In this case, the display unit 130 can support a residual abdominal motion of the abdomen using a goggle-type monitoring device so that the patient can visually feedback the residual abdominal motion, .

2. Description of the Related Art Generally, an image display device forms a focal point so that a virtual large-sized screen can be formed at a long distance by using a precision optical device, which is generated in a position very close to an eye, so that a user can view an enlarged virtual image An image display device.

In other words, a general image display device can not see the surrounding environment, but can be closed (see-close) in which only the image light emitted from the display device can be seen, and the image light emitted from the display device (See-through).

This will be described in more detail with reference to Figs. 5A and 5B.

5A is a cross-sectional view schematically illustrating a concept of a conventional head-mounted display device in which an external image and a virtual screen are simultaneously provided to realize an augmented reality applicable to the integrated system of the present invention.

5A includes a display device 10 for emitting image light, a polarized light separator 11 for reflecting only specific polarized light out of the micro display panel, A phase delay plate 12 for converting the linearly polarized light reflected by the polarized light separator into circularly polarized light or changing incident circularly polarized light to linearly polarized light, (12), and an optical switching switch panel (14) attached to an outer surface of the transflective concave reflector so as to be able to open and close ambient light, an optical system Lt; / RTI >

5A, the image light generated in the display device 10 is converted into a P-wave or S-wave in the 90-degree direction by the polarized light separator 11 arranged at an angle of 45 degrees with respect to the display device 10 Only a 50% beam of a wave property is transmitted or reflected to arrive at the phase delay plate 12.

In addition, the image light that has been linearly polarized in the phase delay plate 12 is converted into circularly polarized light, reaches the transflective concave reflector 13, is reflected, becomes a circularly polarized light state whose rotation direction is opposite to that of the phase delay plate 12, The user can see the image enlarged by the transflective concave reflector 13 by reaching the user's eyes through the polarized light separator 11 again.

5B illustrates a specific example of the Google Glass placed on the upper part of the user's eye in order to minimize visual disturbance applied to the integrated system of the present invention.

Referring to FIG. 5B, the virtual screen is disposed at the upper portion of the user's viewpoint axis and is provided to the user with a slope (A), and the external image is parallel to the user's horizontal axis of vision. (B) In this case, the virtual image A can be confirmed by raising the eye upward, and the external image B can be confirmed without disturbing the forward view when gazing at the front.

Therefore, the location change information can be efficiently delivered to the user through the image display apparatus having such a goggle structure.

The controller 140 may control the overall operation of the abdomen compressing unit 110, the respiration monitoring unit 120, and the display unit 130.

The control unit 140 described herein may be implemented in a recording medium readable by a computer or similar device using, for example, software, hardware, or a combination thereof.

According to a hardware implementation, the control unit 140 described herein may be implemented as application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs) arrays, processors, controllers, micro-controllers, microprocessors, and other units for performing other functions.

If the residual motion of the patient's abdomen is not shown, it may further include an alarm unit for outputting a signal to the outside under the control of the control unit.

The alarm unit may output a signal for informing occurrence of an event in a form other than a video signal or an audio signal, for example, vibration.

The video signal or the audio signal may be output through the display unit.

The control unit 140 controls the display unit 130 to display information for guiding the patient's breathing period and outputs the information through the alarm unit according to the degree of the respiratory cycle of the patient being mapped to the guide period The intensity of the signal can be adjusted.

The control unit 140 controls the display unit 130 to display information for guiding the user to change the position of the body to a position desired by the patient so that the position of the patient is mapped to the guided position The intensity of the signal output through the alarm unit can be adjusted according to the degree of the signal.

In addition, the display unit 130 may further display respiration change information of the patient obtained through the respiration monitoring unit 120.

The concrete process to be proposed in the present invention will be described with reference to the above-described configuration.

FIG. 6 is a flowchart illustrating a specific process in which radiation therapy is performed through the configuration of the integrated system of the present invention.

Referring to FIG. 6, a step S100 in which a part of the abdomen of the patient is fixed via the abdominal pressure device 110 is assumed.

After the abdomen is fixed, a step S200 of sensing the residual abdominal motion through the gas pressure sensor 120 is performed.

Thereafter, a step S300 may be performed to monitor whether the movement of the remaining abdomen is out of a predetermined range under the control of the controller 140. [

If it is determined that the control unit 140 is out of the predetermined range, the guide information may be displayed through the display unit 130 so that the patient may change the position of the user's body (S400). Thereafter, radiation therapy is performed (S500).

As a result, the present invention can provide a user with an integrated system capable of minimizing the movement of the abdomen using abdominal pressure equipment and monitoring the residual movement of the abdomen using a gas pressure sensor.

Specifically, the present invention minimizes movement of the abdominal region through the abdominal compression device, and then performs trekking treatment to irradiate a beam of radiation while monitoring the residual movement of the abdomen using a gas pressure sensor And provide a system for the user to control his or her residual abdominal motion by visually providing feedback to the patient using goggle-type monitoring equipment for residual abdominal motion.

The main objective of the current commercial abdominal compression device is to remain in the abdomen's compression itself and to treat it with a wider range of motion under the assumption that there is no residual motion or if there is residual motion. However, many studies have shown that the abdominal residual motion is not negligible, and it requires appropriate measures. In addition, when the abdominal pressure device is used, it is impossible to use the existing commercialized respiration monitoring equipment, and the connection with the breathing intervention treatment is very poor. When the equipment developed through the present invention is used, compatibility with respiratory correlated radiation therapy can be established while maintaining the merits of the conventional compression device, and thus it can be used commercially in a very valuable manner.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The foregoing description of the preferred embodiments of the invention disclosed herein has been presented to enable any person skilled in the art to make and use the present invention. While the present invention has been particularly shown and described with reference to preferred embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. For example, those skilled in the art can utilize each of the configurations described in the above-described embodiments in a manner of mutually combining them. Accordingly, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

The invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. Accordingly, the above description should not be construed in a limiting sense in all respects and should be considered illustrative. The scope of the present invention should be determined by rational interpretation of the appended claims, and all changes within the scope of equivalents of the present invention are included in the scope of the present invention. The present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein. In addition, claims that do not have an explicit citation in the claims may be combined to form an embodiment or be included in a new claim by amendment after the filing.

Claims (17)

An abdominal fixation portion that applies pressure to at least a portion of the patient abdomen to minimize movement;
A respiration monitoring unit for monitoring a change in respiration of the patient through a gas pressure sensor for inputting gas into the first region and sensing a degree of the injected gas being ejected from the first region;
A controller for determining that there is residual motion of the patient's abdomen when the respiration change of the patient is out of a preset range;
A display unit for displaying information for guiding the patient to control the movement of the patient's abdomen under the control of the controller; And
And an alarm unit for outputting a signal to the outside under the control of the control unit when it is determined that there is residual motion of the patient's abdomen,
Wherein,
Wherein the control unit controls the display unit to display information for guiding a breathing period of the patient,
Adjusts the intensity of the signal output through the alarm unit according to the degree to which the respiratory cycle of the patient is mapped to the guided cycle,
The display unit controls to display information for guiding the patient to change the position of the body to a desired position,
Wherein the intensity of the signal output through the alarm unit is adjusted according to the degree to which the position of the patient is mapped to the guided position. The method according to claim 1,
Wherein the display unit is a head mounted display comprising an optical module for transmitting image light to the eye of the patient. delete delete delete delete delete The method according to claim 1,
Wherein the display unit further displays respiration change information of the patient acquired through the respiration monitoring unit. The method according to claim 1,
Wherein the patient's abdomen with minimal movement through the abdominal fixation portion is capable of radiation therapy. Compressing at least a portion of the patient ' s abdomen to minimize movement;
Monitoring a respiratory change of the patient through a gas pressure sensor that injects gas into the first region and senses the extent to which the injected gas is ejected from the first region;
Determining that there is a residual motion of the patient's abdomen when the respiratory change of the patient is out of a predetermined range;
Displaying information guiding the patient to control movement of the patient ' s abdomen; And
And outputting a signal to the outside when it is determined that there is residual motion of the patient's abdomen,
Wherein the information includes information for guiding the patient's breathing cycle and information for guiding the patient to change the position of the body to a desired position,
The intensity of the output signal is adjusted according to the degree to which the respiratory cycle of the patient is mapped to the guide period,
Wherein the intensity of the output signal is adjusted according to the degree to which the position of the patient is mapped to the guided position. delete delete delete delete delete 11. The method of claim 10,
Wherein the information is displayed together with the obtained respiration change information of the patient. 11. The method of claim 10,
Wherein the patient abdomen with minimal movement is capable of radiation therapy.

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