KR20160126397A

KR20160126397A - Lighting patch for breathing synchronized delivery

Info

Publication number: KR20160126397A
Application number: KR1020150057405A
Authority: KR
Inventors: 한우석
Original assignee: 한우석
Priority date: 2015-04-23
Filing date: 2015-04-23
Publication date: 2016-11-02
Also published as: KR101683369B1

Abstract

The present invention relates to a light-emitting patch for detecting a respiratory state of a patient undergoing radiation therapy and, more specifically, to a light-emitting patch for respiratory gating signal acquisition, comprising: a patch body having an adhesion side attached to a measurement target unit and a tracking side formed by being connected to the adhesion side; an optic fiber where an end portion of one side is fixed on the tracking side and which emits the light on the tracking side by a point source; and a light source unit which supplies the light to the optic fiber.

Description

[0001] LIGHTING PATCH FOR BREATHING SYNCHRONIZED DELIVERY FOR RETURNING A RESPIRATORY TUNING TONE [0002]

The present invention relates to a luminescent patch for detecting a respiratory condition of a patient undergoing radiation therapy.

Recently, radiotherapy methods have been improved in combination with computer and networking, radiation therapy treatment planning software, and medical imaging techniques. Such medical imaging techniques include, for example, computed tomography (CT), magnetic resonance imaging (MRI), ultrasound, positron emission tomography ("PET" : positron emission tomography). In some cases, techniques have been used to plan and deliver radiation therapy.

For example, a method of treating a moving target, such as a tumor in the lung, requires that only when the moving target enters a specified window in the trajectory, quot; gating ", i.e. delivering radiation. However, this method is not efficient because irradiation of the target with irradiation is performed only at periodic time intervals.

Another way to treat moving targets is by breathing synchronized delivery ("BSD"). This technique uses the expected track or path of motion that the target will follow during the course of treatment.

To do this, plan to assume that the target is staying on the anticipated track, and include the anticipated period and phase in the anticipated path through the entire course of the treatment plan. Using voice and video guidance, the patient can be made to follow strict and limited pathways.

The survival rate of patients with lung cancer was 21.9%, which was lower than the survival rate of 60.9%. The low survival rate of patients with lung cancer may be various, but poor radiotherapy is considered to be an important factor.

The reason for poor radiotherapy results in lung cancer is that the entire surface area of the organ due to respiration is treated with radiation, which increases the irradiation side of the radiation and increases the possibility of side effects. To solve these problems, a real-time tracking system is under development.

Gating Therapy is used as Real-time Position Management (RPM) to reduce the scope of investigation by quantifying the respiratory synchronization applied to the treatment of lung cancer patients.

Conventionally, a breathing signal acquisition method using an expensive infrared camera has been used. However, since a camera that takes an infrared ray has a large size, when the position of the patient is non-coplanar in a radiation therapy apparatus, Had limitations.

The present invention is to provide a luminescence patch for acquiring a respiration synchronization signal for enabling a respiration signal acquisition using a general camera.

A related prior art document is Korean Patent Laid-Open Publication No. 10-2008-0039919 (published on May 7, 2008) entitled " System and Method for Detecting Respiratory Condition of Patients Receiving Radiotherapy ".

SUMMARY OF THE INVENTION It is an object of the present invention to provide a luminescence patch for acquiring a breathing tuning signal for acquiring a breathing signal using a general camera (a visible light camera).

It is another object of the present invention to provide a luminescence patch for acquiring a respiration synchronous signal that enables a signal relating to a patient's motion to be acquired two-dimensionally or three-dimensionally.

The present invention relates to a patch body comprising: a patch body having a mounting surface attached to a measurement target portion and a tracking surface connected to the mounting surface; An optical fiber having one end fixed to the tracking surface and emitting light to the point light source on the tracking surface; And a light source unit for supplying light to the optical fiber.

It is preferable that a plurality of the optical fibers are provided, and more than three optical fibers are provided, and it is preferable that polygons are formed when the point light sources are connected on the tracking surface.

In addition, the traced surface may be formed as a flat surface, and the surface of the traced surface is preferably matted to reduce the visible light reflectance.

The tracking surface may be connected to the attachment surface in an angle adjustable manner.

It is preferable that the light source unit is capable of adjusting the light emission illuminance.

A plurality of patch bodies may be provided, and the plurality of patch bodies may be connected to one light source unit.

The luminescent patch according to the present invention emits light as a point light source, and the image signal of the point light source can be acquired by the camera, thereby improving the accuracy of the acquired information.

In addition, the luminescent patch according to the present invention can detect the movement of the human body two-dimensionally or three-dimensionally, thereby obtaining a more accurate breathing synchronization signal.

In addition, the light emission patch according to the present invention has a separate light source unit, which prevents the light source unit from interfering with the radiation treatment during the radiation treatment.

1 is a perspective view showing a luminescent patch for acquiring a breathing tuning signal according to a first embodiment of the present invention.
2 is a perspective view showing a luminescent patch for obtaining a breathing tuning signal according to a second embodiment of the present invention.
3 is a perspective view showing a luminescent patch for acquiring a breathing tuning signal according to a third embodiment of the present invention.
4 is a perspective view illustrating a luminescent patch for acquiring a breathing tuning signal according to a fourth embodiment of the present invention.
5 to 7 are schematic views showing a use state of a luminescence patch for obtaining a breathing tuning signal according to the present invention.

The terms and words used in the present specification and claims should not be construed as limited to ordinary or preliminary meaning and the inventor shall properly define the concept of the term in order to describe its invention in the best possible way It should be construed in accordance with the meaning and concept consistent with the technical idea of the present invention. It should be noted that the embodiments described in the present specification and the configurations shown in the drawings are only the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention, It should be understood that various equivalents and modifications are possible.

1 is a perspective view showing a luminescent patch for acquiring a breathing tuning signal according to a first embodiment of the present invention.

As shown in the figure, the luminescent patch for acquiring a breathing tuning signal according to the first embodiment of the present invention includes a patch body 110 having an attachment surface 112, a tracing surface 114, An optical fiber 120 for forming a point light source in the optical fiber 120, and a light source 130 for supplying light to the optical fiber 120.

The patch body 110 adheres to the measurement target portion and is attached to the chest or abdomen of the patient. The attachment surface 112 of the patch body 110 is preferably formed such that an adhesive layer can be formed and attached to the skin of the patient. The attachment surface 112 may be formed using a double-sided tape or the like . When the patch body 110 is formed in a plate shape, one surface may be the attachment surface 112 and the other surface may be the tracing surface.

In the tracking surface 114, the end of the optical fiber is exposed and light is emitted from the optical fiber. This structure is for allowing the optical fiber to emit light to the point light source on the tracking surface 114 so that the point light source can be identified in the image image using the camera.

Conventionally, an infrared camera is used to acquire an image, and a reflector is attached to the measurement target portion to track the movement of the reflector. However, this structure is limited in that the angle of view of the reflector and the infrared camera is limited and the infrared camera is expensive there was.

The present invention can acquire an image using a relatively inexpensive visible light camera (general camera), but it is also possible to reduce the imaging angle restriction by allowing the point light source to emit light in the tracked portion, So that they can be accurately tracked.

2 is a perspective view showing a luminescent patch for obtaining a breathing tuning signal according to a second embodiment of the present invention.

In the first embodiment, the attachment surface 112 and the tracking surface 114 are formed in parallel. The second embodiment shows a configuration in which the tracking surface 114 is formed in an erected form with an angle to the mounting surface 112. [

In the second embodiment, the attachment surface 112 and the tracking surface 114 are connected.

Preferably, the patch body 110 is formed of a nonmetallic material in which the radiation irradiated during the treatment of the wire is not spoiled.

In particular, in the case of the tracking surface 114, it is preferable that the surface is matte treated. A recognition error or a recognition error of a point light source that is emitted from the tracking surface 114 due to reflection of light or the like around the tracking surface 114 does not occur. The matte treatment may be carried out by imparting roughness to the surface or coating with a matte coating.

The optical fiber 120 serves to emit light emitted from the light source unit 130 to the point light source on the tracking surface 114 of the patch body 110. Also, the optical fiber 120 preferably has a length capable of disposing the light source unit 130 at a position spaced apart from the body of the therapist.

The light source unit 130 must include metal parts. If the light source unit 130 is located at a position where the light source unit 130 interferes with the body of the therapist, it may interfere with the radiation treatment.

An optical fiber 120 is connected to the light source unit 130 and includes a light source 132 for supplying light to the end 124 of the optical fiber 120. As the light source 132, various lamps or LEDs that emit visible light may be used. Further, it is preferable that the light source 132 is capable of controlling the light emission illuminance. The brightness of the light emitted from the point light source may be different from that of the camera due to the distance between the camera and the tracking surface 114. In this case, So that the point light source of the light source can be more accurately recognized.

3 is a perspective view showing a luminescent patch for acquiring a breathing tuning signal according to a third embodiment of the present invention.

In the case of the second embodiment, one point light source is formed on the tracking surface 114. In the third embodiment, a plurality of point light sources are formed on the tracking surface 114.

In the case of tracking the movement of one point light source, the movement of the light source can only be traced in two-dimensional motion in the two-dimensional image captured by the camera, but a plurality of point light sources are formed on the tracking surface, Dimensional position of the polygon can be calculated and traced by using the change in length of each side of the polygon when the polygon is formed by connecting the point light sources without being placed on the polygon.

Preferably, the four point light sources are arranged in the form of a quadrangle.

By arranging in the form of a rectangle or more polygons, it is possible to calculate the precise three-dimensional positional coordinates of the polygon relative to the camera from the length of each side.

The third embodiment is characterized in that the angle between the attachment surface 112 of the patch body 110 and the tracking surface 114 is adjustable.

As shown, the angle of the tracking surface 114 with respect to the mounting surface 112 can be adjusted by connecting the mounting surface 112 and the tracking surface 114 with the hinge axis 116. This is so that the angle of the mounting surface 112 can be adjusted so that the camera can more accurately recognize the mounting surface 112.

4 is a perspective view illustrating a luminescent patch for acquiring a breathing tuning signal according to a fourth embodiment of the present invention.

In this embodiment, a plurality of patch bodies 110 are connected to one light source unit 130. A plurality of patch bodies 110 may be attached to a single light source unit 130 to track movement of various parts of a patient's body. In this case, a plurality of patch bodies 110 may be connected to a single light source unit 130.

5 to 7 are schematic views showing a use state of a luminescence patch for obtaining a breathing tuning signal according to the present invention.

As shown in the figure, a patch body 110 according to the present invention is attached to a chest of a patient lying for treatment in a radiotherapy apparatus, a camera 200 capable of photographing the patch body 110 is installed, The motion image of the patch body 100 can be photographed in real time.

As shown in the figure, the portion of the patient lying on the body becomes a part of the patch body 110 and the light oil 120, and the light source portion is formed at a position spaced apart from the patient's body. In this state, the motion of the patient can be predicted, the radiotherapy apparatus can be operated, the real-time motion can be predicted, and the radiation therapy can be performed.

The position of the camera 200 may be appropriately changed depending on the shape of the patch body 110. [ 5, the camera 200 may be installed on the leg side of the patient, and when the point light source is parallel to the patient's body as in the embodiment of FIG. 6, The camera 200 may be installed above the head of the patient or the camera 200 may be installed above the head of the patient as in the embodiment of FIG.

It is to be understood that the above-described embodiments are to be considered in all respects as illustrative and not restrictive, and the scope of the present invention will be indicated by the appended claims rather than by the foregoing detailed description. It is intended that all changes and modifications that come within the meaning and range of equivalency of the claims, as well as any equivalents thereof, be within the scope of the present invention.

100: Luminescent patch
110: Patch body
112: Mounting surface
114: Tracking surface
116: Hinge shaft
120: Optical fiber
130:
132: Light source

Claims

A patch body having a mounting surface attached to the measurement target portion and a tracking surface connected to the mounting surface;
An optical fiber having one end fixed to the tracking surface and emitting light to the point light source on the tracking surface; And
And a light source for supplying light to the optical fiber.

The method according to claim 1,
Wherein a plurality of optical fibers are provided to form a plurality of point light sources.

3. The method of claim 2,
At least three optical fibers are provided,
And a polygon is formed by connecting the plurality of point light sources on the tracking surface.

The method according to claim 1,
Wherein the tracing surface is formed as a flat surface.

5. The method of claim 4,
Characterized in that the surface of the tracking surface is matted to reduce the visible light reflectance.

The method according to claim 1,
Wherein the tracking surface is angularly connected to the attachment surface.

The method according to claim 1,
Wherein the light source unit is capable of controlling the light emission illuminance.

The method according to claim 1,
A plurality of patch bodies are provided,
Wherein the plurality of patch bodies are connected to one light source unit.