KR102156592B1 - Method for making radiotherapy mask - Google Patents

Abstract

Disclosed in the present invention is a method for fabricating a radiotherapy mask. The method for fabricating a radiation therapy mask of the present invention comprises: an extraction step of extracting surface data of a mask surface from tomography data of a patient wearing a mask; a mapping step of generating mapping data by mapping image data of the skin selected by the patient to the surface data; and a printing step of inputting the mapping data to a printing device to print an image of the skin on the mask surface. According to the present invention, it is possible to provide a method for fabricating a radiation therapy mask, in which fabrication is quick and treatment satisfaction is improved, while reducing the anxiety and fear of patients, who need to wear a mask during brain/head and neck radiation therapy.

Description

How to make a mask for radiation therapy{METHOD FOR MAKING RADIOTHERAPY MASK}

The present invention relates to a method of manufacturing a mask for radiation therapy, and more particularly, to a method of manufacturing a mask for radiation therapy that maintains the posture of a patient's head during radiation therapy.

In radiotherapy, it is very important to maintain an accurate patient posture. If an error occurs in the patient's posture maintenance, the local recurrence rate may increase because sufficient prescribed dose to the treatment target is not irradiated, and side effects may increase due to excessive radiation exposure to surrounding normal tissue.

The above problem is more important in radiation treatment of brain/head and neck tumor patients with important normal organs such as brainstem, optic chiasm, and spinal cord close to the target and a small margin of target volume for planning. Do.

In particular, it becomes a more sensitive problem in the case of performing intensity modulated radiation therapy or stereotactic radiotherapy that requires a high degree of treatment precision.

In order to minimize these problems, various patient fixation tools are used in radiation therapy, and a thermoplastic mask is used to fix the patient during radiation treatment of brain and head and neck tumors.

Radiation therapy is a continuous treatment process with a long treatment period and 5 days per week. And, for 20 minutes to 1 hour, the patient is alone in a closed treatment room during each treatment.

In addition, since movement causes side effects on normal tissues, the subject's posture must be reproduced in the same manner as in the treatment design, and the cancer patients easily feel anxiety and fear because they must take an immovable posture at the tumor site using a fixture. Such anxiety and fear are more easily felt in younger patients.

Anxiety and depression in cancer patients receiving radiation therapy not only make it difficult to maintain an immobile posture, but also affect the quality of life during treatment. Therefore, there is a need for a way to reduce anxiety and depression experienced during radiation therapy.

In addition, 30-80% of cancer patients experience fatigue after radiation therapy, which becomes a persistent problem in cancer patients receiving radiation therapy. Since anxiety and depression are one of the very important factors influencing the fatigue of cancer patients, in order to alleviate the fatigue of cancer patients and increase their sense of stability, measures to help them adequately cope with psychological factors are required.

Republic of Korea Patent Publication No. 2015-0096395 (published on August 24, 2015)

It is an object of the present invention to provide a method of manufacturing a radiation therapy mask that reduces anxiety and fear of patients who need to wear a mask during brain/head and neck radiation treatment, while making it faster and improving treatment satisfaction.

According to the present invention, an extraction step of extracting surface data of the mask surface from tomography data of a patient wearing a mask; A mapping step of generating mapping data by mapping image data of a skin selected by the patient to the surface data; And a printing step of inputting the mapping data to a printing device to print an image of the skin on the mask surface.

In addition, the above object, according to the present invention, the extraction step of extracting the surface data of the mask surface from the tomography data of a patient wearing a mask; A mapping step of generating mapping data by mapping image data of a skin selected by the patient to the surface data; An area setting step of inputting area data of an area in which the mask is to be cut into the surface data; A printing step of inputting the mapping data to a printing device to print an image of the skin on the mask surface; And a cutting step of cutting the mask for patient safety and skin protection by inputting the area data into a cutting device.

In the extraction step, the surface data may include centerline data of a radiation treatment movement center, and in the mapping step, the centerline data of the radiation treatment movement center may be mapped onto the image data.

Before the extraction step, patient information is displayed on the mask, and in the extraction step, the surface data includes the patient information, and in the mapping step, the patient information data may be mapped onto the image data. .

In addition, the above object, according to the present invention, the extraction step of extracting the surface data of the body surface to be covered with a mask from the tomography data of the patient; A modeling step of generating shape data of the mask using the surface data; A mapping step of generating mapping data by mapping image data of a skin selected by the patient to the shape data; A first printing step of printing the mask by inputting the shape data to a 3D printer; And a second printing step of inputting the mapping data to a printing device to print an image of the skin on the mask surface.

According to the present invention, by printing the image of the skin on the mask surface through the extraction step, the mapping step and the printing step, while reducing the anxiety and fear of patients who need to wear a mask during brain/head and neck radiation treatment, manufacturing is quick and treatment It is possible to provide a method of manufacturing a mask for radiation therapy made to improve satisfaction.

1 is a flow chart of a method of manufacturing a mask for radiation therapy according to an embodiment of the present invention.
Figure 2 is a flow chart of a method of manufacturing a mask for radiation therapy according to another embodiment of the present invention.
Figure 3 is a view showing a tomography of a patient wearing a mask before the extraction step of the radiation treatment mask manufacturing method of Figure 2;
Figure 4 is a diagram showing an extraction step of the method of manufacturing the radiation treatment mask of Figure 2;
5 is a diagram showing a mapping step of the method of manufacturing a mask for radiation therapy of FIG. 2.
6 is a diagram showing an area setting step of the method of manufacturing a radiation treatment mask of FIG. 2;
7 is a drawing showing a printing step of the method of manufacturing a mask for radiation treatment of FIG. 2.
Figure 8 is a diagram showing a cutting step of the method of manufacturing the mask for radiation therapy of Figure 2;
9 is a view showing a mask manufactured by the method of manufacturing a mask for radiation therapy of FIG. 2.
10 is a flowchart of a method of manufacturing a mask for radiation therapy according to another embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, in describing the present invention, a description of a function or configuration that is already known will be omitted in order to clarify the gist of the present invention.

The method of manufacturing a mask for radiation therapy according to the present invention reduces anxiety and fear of patients who need to wear a mask during brain/head and neck radiation treatment, while making it faster and improving treatment satisfaction.

1 is a flow chart of a method of manufacturing a mask for radiation treatment according to an embodiment of the present invention, FIG. 2 is a flow chart of a method of manufacturing a mask for radiation treatment according to another embodiment of the present invention, and FIG. 3 is a radiation treatment of FIG. It is a diagram showing tomography of a patient wearing a mask before the extraction step of the method of manufacturing a dragon mask.

FIG. 4 is a diagram showing an extraction step of the method of manufacturing a radiation treatment mask of FIG. 2, FIG. 5 is a diagram illustrating a mapping step of the method of manufacturing a radiation treatment mask of FIG. 2, and FIG. 6 is a mask for radiation treatment of FIG. It is a figure showing the area setting stage of the manufacturing method.

FIG. 7 is a drawing showing a printing step of the method of manufacturing a radiation treatment mask of FIG. 2, FIG. 8 is a drawing showing a cutting step of the method of manufacturing a radiation treatment mask of FIG. 2, and FIG. 9 is a mask for radiation treatment of FIG. It is a diagram showing a mask manufactured by the manufacturing method.

As shown in Figure 1, the radiation treatment mask manufacturing method (S100) according to an embodiment of the present invention is made to maintain the posture of the patient (1) head during radiation treatment, extraction step (S110), It is configured including a mapping step (S120) and a printing step (S130).

The extraction step S110 is a step of extracting the surface data D2 on the surface of the mask 10. Here, the surface of the mask 10 means an outer surface of the mask 10, that is, a surface on which the patient 1's skin does not touch.

As shown in FIG. 3, the mask 10 may be made of thermoplastic. Thermoplastic is frequently used as a body position fixation material for the head and neck as well as the abdomen and pelvis. Thermoplastic is heated in warm water at about 70℃. When the heated thermoplastic is in close contact with the head and neck and cooled, the mask 10 is completed.

The surface data D2 is extracted from the tomography data D1 of the patient 1 wearing the mask 10. 3 and 4, the tomography data D1 refers to data obtained by photographing the patient 1 wearing the mask 10 in the tomography apparatus 2. Here, the tomography apparatus 2 may mean CT (Computed Tomography), MRI (Magnetic Resonance Imaging), or the like.

4(a) shows a screen visualizing the head and neck tomography data D1. 4(b) shows the center line 11 of the radiotherapy movement center stored in the head and neck tomography data D1. The radiation treatment movement center center line 11 may be automatically input by the tomography apparatus 2 or may be input by a medical person.

The center line 11 of the radiotherapy movement center means one or more reference lines set by the medical staff to visually recognize the location of the patient 1 during radiation treatment. The surface data (D2) extracted in the extraction step (S110) includes centerline data (D3) of the radiation treatment movement center.

The extraction step (S110) is performed in medical software. As disclosed in Unexamined Patent Publication No. 2018-0088061 and Registration Patent Publication No. 1481796, medical software for editing tomography data D1 is a known technology, and a detailed description thereof will be omitted. In FIG. 5B, surface data D2 of the mask 10 extracted from the tomography data D1 is shown.

As shown in Figure 1, when the extraction step (S110) is completed, the mapping step (S120) is performed. The mapping step S120 is a step of generating the mapping data D4.

As shown in FIG. 5, the mapping data D4 refers to data obtained by mapping the image data of the skin to the surface data D2. The mapping step S120 is performed in the medical software described above.

In the mapping step S120, the radiation treatment movement center centerline data D3 is mapped onto the image data. In addition, in the mapping step (S120), patient information data is mapped onto the image data. The patient information data may include the patient 1's examination ticket number and name. Patient information data can be entered by medical staff in medical software.

Alternatively, the patient information 12 may be formed on the mask 10 before the extraction step S110. The tomography data D1 may include the formed patient information 12. The patient information 12 may be printed on the surface of the mask 10 or may be embossed by attaching a character sticker to the surface of the mask 10. The surface data D2 extracted in the extraction step S110 may include patient information 12.

5(a) shows images of various skins stored in medical software. Fig. 5(a) shows the heroes of the movie as images of various skins. Fig. 5(b) shows that the image data of the skin is mapped to the surface data D2 in medical software.

As shown in FIG. 1, when the mapping step S120 is completed, a printing step S130 is performed. The printing step (S130) is a step of printing an image of the skin on the surface of the mask 10 by inputting the mapping data D4 to the printing device.

As disclosed in Registered Patent Publication No. 1926141, since a device for coloring a three-dimensional object is a known technology, a detailed description of the printing device will be omitted. 7 shows a mask 10 on which an image of a skin is printed.

When the image of the skin desired by the patient is printed on the mask 10, it is possible to reduce anxiety and fear of patients who need to wear a mask during brain/head and neck radiation treatment, especially young patients.

Thereafter, in the mask 10, holes 13 may be manually formed in the eyes, nose, mouth, and ears for safety and discomfort of the patient 1. In addition, an additional hole 13 may be further formed to protect the skin of the patient 1.

9 shows a patient 1 wearing marks. In FIG. 9, the skin image is omitted to clearly show the center line 11 and patient information 12 of the radiation treatment movement center. Reference numeral 20 denotes a support for fixing the mask 10. The support can be seated (coupled) on the couch (3). Reference numeral 21 denotes a fixing member that fixes the ends of the mask 10 to the support 20.

As shown in Figure 2, the radiation treatment mask manufacturing method (S200) according to another embodiment of the present invention, the extraction step (S210), the mapping step (S220), the area setting step (S230), the printing step (S240) ) And a cutting step (S250).

The extraction step S210 is a step of extracting the surface data D2 on the surface of the mask 10. Here, the surface of the mask 10 means an outer surface of the mask 10, that is, a surface on which the patient 1's skin does not touch.

As shown in FIG. 3, the mask 10 may be made of thermoplastic. Thermoplastic is frequently used as a body position fixation material for the head and neck as well as the abdomen and pelvis. Thermoplastic is heated in warm water at about 70℃. When the heated thermoplastic is in close contact with the head and neck and cooled, the mask 10 is completed.

The surface data D2 is extracted from the tomography data D1 of the patient 1 wearing the mask 10. 3 and 4, the tomography data D1 refers to data obtained by photographing the patient 1 wearing the mask 10 in the tomography apparatus 2. Here, the tomography apparatus 2 may mean CT (Computed Tomography), MRI (Magnetic Resonance Imaging), or the like.

4(a) shows a screen visualizing the head and neck tomography data D1. 4(b) shows the center line 11 of the radiotherapy movement center stored in the head and neck tomography data D1. The radiation treatment movement center center line 11 may be automatically input by the tomography apparatus 2 or may be input by a medical person.

The center line 11 of the radiotherapy movement center means one or more reference lines set by the medical staff to visually recognize the location of the patient 1 during radiation treatment. The surface data (D2) extracted in the extraction step (S210) includes the centerline data (D3) of the radiation treatment movement center.

The extraction step (S210) is performed in medical software. As disclosed in Unexamined Patent Publication No. 2018-0088061 and Registration Patent Publication No. 1481796, medical software for editing tomography data D1 is a known technology, and a detailed description thereof will be omitted. In FIG. 5B, surface data D2 of the mask 10 extracted from the tomography data D1 is shown.

As shown in FIG. 2, when the extraction step S210 is completed, the mapping step S220 is performed. The mapping step S220 is a step of generating the mapping data D4.

As shown in FIG. 5, the mapping data D4 refers to data obtained by mapping the image data of the skin to the surface data D2. The mapping step S220 is performed in the medical software described above. In the mapping step S220, the radiation treatment movement center centerline data D3 is mapped onto the image data.

5(a) shows images of various skins stored in medical software. Fig. 5(a) shows the heroes of the movie as images of various skins. Fig. 5(b) shows that the image data of the skin is mapped to the surface data D2 in medical software.

As shown in FIG. 2, when the mapping step S220 is completed, the region setting step S230 is performed. The area setting step S230 is a step of inputting area data of an area in which the mask 10 is to be cut into the surface data D2.

The mask 10 may have holes 13 formed in the eyes, nose, mouth, and ears for safety and discomfort of the patient 1. In addition, an additional hole 13 may be further formed to protect the skin of the patient 1. The area data refers to positional information of the portion where the above-described hole 13 is to be cut. 6 shows a simulation screen in which a mask is cut by area data in medical software.

As shown in FIG. 2, when the area setting step S230 is completed, the printing step S240 is performed. The printing step (S240) is a step of printing an image of the skin on the surface of the mask 10 by inputting the mapping data D4 to the printing device.

As disclosed in Registered Patent Publication No. 1926141, since a device for coloring a three-dimensional object is a known technology, a detailed description of the printing device will be omitted. 7 shows a mask 10 on which an image of a skin is printed.

When the image of the skin desired by the patient is printed on the mask 10, it is possible to reduce anxiety and fear of patients who need to wear a mask during brain/head and neck radiation treatment, especially young patients.

As shown in FIG. 2, when the printing step S240 is completed, the cutting step S250 is performed. The cutting step (S250) is a step of cutting the mask 10 for safety and skin protection of the patient 1. The medical practitioner can cut the mask 10 by inputting the area data into the cutting device 4.

As shown in Figure 8, the cutting step (S250) is performed through the cutting device (4). Fig. 8(a) shows a laser cutting type cutting device 4. 8(b) shows various masks 10 cut by the cutting device 4.

In general, holes are formed in the eyes, nose, mouth, and ears of the mask for the safety and discomfort of the patient. However, conventionally, since the hole is formed by hand, there is a problem in that the hole is formed too large or small depending on the skill level of the medical practitioner. In addition, there is a problem that it takes a lot of time to form the hole.

In the method of manufacturing a mask for radiation therapy (S200) according to another embodiment of the present invention, in the area setting step (S230), area data of an area to be cut with the mask 10 is input to the surface data (D2), and after the printing step By inputting the area data to the cutting device 4 and cutting the mask 10 accurately and quickly, the above-described problem is solved.

9 shows a patient 1 wearing marks. In FIG. 9, the skin image is omitted to clearly show the center line 11 and patient information 12 of the radiation treatment movement center. Reference numeral 20 denotes a support for fixing the mask 10. The support can be seated (coupled) on the couch (3). Reference numeral 21 denotes a fixing member that fixes the ends of the mask 10 to the support 20.

10 is a flowchart of a method of manufacturing a mask for radiation therapy according to another embodiment of the present invention.

As shown in FIG. 10, a method of manufacturing a mask for radiation therapy (S300) according to another embodiment of the present invention includes an extraction step (S310), a modeling step (S320), a mapping step (S330), and a first printing step. It is configured to include (S340) and a second printing step (S350).

The extraction step S310 is a step of extracting surface data of the body surface to be covered with the mask 10 from the tomography data of the patient 1. The surface data is extracted from the tomography data of the patient 1 who does not wear the mask 10.

The tomography data refers to data obtained by photographing the patient 1 without the mask 10 in the tomography apparatus 2. Here, the tomography apparatus 2 may mean CT (Computed Tomography), MRI (Magnetic Resonance Imaging), or the like. The surface data extracted in the extraction step (S310) includes centerline data of the radiation treatment movement center.

As shown in FIG. 10, when the extraction step S310 is completed, the modeling step S320 is performed. The modeling step S320 is a step of generating shape data of the mask 10 by using the surface data. Here,'shape data' means modeling data of the mask 10.

The modeling step (S320) is performed in a dedicated modeling program. The medical staff transmits the surface data extracted in the extraction step (S310) to a dedicated modeling program. The shape data of the mask 10 may be modeled in a form similar to a conventional mask made of thermoplastic as shown in FIG. 6.

The mask 10 may have holes 13 formed in the eyes, nose, mouth, and ears for safety and discomfort of the patient 1. In addition, an additional hole 13 may be further formed to protect the skin of the patient 1. The shape data may include information on the hole 13 described above.

As shown in FIG. 10, when the modeling step S320 is completed, the mapping step S330 is performed. The mapping step S330 is a step of generating mapping data. Mapping data refers to data obtained by mapping image data of a skin to shape data. The mapping step S330 is performed in the medical software described above.

In the mapping step (S330), the radiation treatment movement center centerline data is mapped onto the image data. In addition, in the mapping step (S330), patient information data is mapped onto the image data. The patient information data may include the patient 1's examination ticket number and name. Patient information data can be entered by medical staff in medical software.

As shown in FIG. 10, when the mapping step S330 is completed, a first printing step S340 is performed. The first printing step S340 is a step of printing the mask 10 by inputting shape data to the 3D printer.

A 3D printer is a device that receives a 3D modeling file and prints it in 3D. The 3D printer may be a layered 3D printer that stacks liquid plastic layer by layer. A 3D printer that manufactures a sculpture by laminating liquid plastics is a well-known technology, so a detailed description thereof will be omitted.

As shown in FIG. 10, when the first printing step S340 is completed, a second printing step S350 is performed. The second printing step (S350) is a step of printing an image of the skin on the surface of the mask 10 by inputting mapping data into the printing device.

As disclosed in Registered Patent Publication No. 1926141, since a device for coloring a three-dimensional object is a known technology, a detailed description of the printing device will be omitted. 7 shows a mask 10 on which an image of a skin is printed.

When the image of the skin desired by the patient 1 is printed on the mask 10, the anxiety and fear of the patients 1 who need to wear the mask 10 during brain/head and neck radiation treatment, especially the younger patient 1 You can lower it.

According to the present invention, by printing the image of the skin on the mask surface through the extraction step, the mapping step and the printing step, while reducing the anxiety and fear of patients who need to wear a mask during brain/head and neck radiation treatment, manufacturing is quick and treatment It is possible to provide a method of manufacturing a mask for radiation therapy made to improve satisfaction.

In the above, although specific embodiments of the present invention have been described and illustrated, the present invention is not limited to the described embodiments, and various modifications and variations can be made without departing from the spirit and scope of the present invention. It is self-evident to those who have. Accordingly, such modifications or variations should not be individually understood from the technical spirit or viewpoint of the present invention, and the modified embodiments should be said to belong to the claims of the present invention.

10: mask
11: center line 1: patient
12: patient information 2: tomography apparatus
13: hole 3: couch
21: fixing member 4: cutting device
20: support
S100,S200,S300: Manufacturing method
S110, S210, S310: extraction step D1: tomography data
S320: modeling step D2: surface data
S120,S220,S330: Mapping step D3: Center line data
S230: area setting step D4: mapping data
S130,S240: printing step
S340: first printing step
S350: second printing step
S250: cutting step

Claims (5)

An extraction step of extracting surface data of the mask surface from tomography data of a patient wearing a mask;
A mapping step of generating mapping data by mapping image data of a skin selected by the patient to the surface data; And
Including a printing step of printing the image of the skin on the mask surface by inputting the mapping data into a printing device,
In the extraction step, the surface data includes center line data of the radiation treatment movement center,
In the mapping step, the radiation treatment movement center centerline data is mapped on the image data,
Before the extraction step, patient information is displayed on the mask,
In the extraction step, the surface data includes the patient information,
In the mapping step, the patient information data is mapped on the image data. An extraction step of extracting surface data of the mask surface from tomography data of a patient wearing a mask;
A mapping step of generating mapping data by mapping image data of a skin selected by the patient to the surface data;
An area setting step of inputting area data of an area in which the mask is to be cut into the surface data;
A printing step of inputting the mapping data to a printing device to print an image of the skin on the mask surface; And
A cutting step of cutting the mask for patient safety and skin protection by inputting the area data into a cutting device,
In the extraction step, the surface data includes center line data of the radiation treatment movement center,
In the mapping step, the radiation treatment movement center centerline data is mapped on the image data,
Before the extraction step, patient information is displayed on the mask,
In the extraction step, the surface data includes the patient information,
In the mapping step, the patient information data is mapped on the image data. delete delete An extraction step of extracting surface data of a body surface to be covered with a mask from the patient's tomography data;
A modeling step of generating shape data of the mask using the surface data;
A mapping step of generating mapping data by mapping image data of a skin selected by the patient to the shape data;
A first printing step of printing the mask by inputting the shape data to a 3D printer; And
Including a second printing step of printing the image of the skin on the mask surface by inputting the mapping data into a printing device,
In the extraction step, the surface data includes center line data of the radiation treatment movement center,
In the mapping step, the radiation treatment movement center centerline data is mapped on the image data,
In the extraction step, the surface data includes patient information,
In the mapping step, the patient information data is mapped on the image data.

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