Noninvasive positioning device and positioning system

Abstract

The utility model provides a noninvasive positioning device and a positioning system, and relates to the technical field of medical treatment, in particular to the technical field of tumor tracking. The non-invasive positioning device comprises a non-invasive positioning film, wherein the non-invasive positioning film is used for covering a target part of a target object. The at least one pressure sensor is arranged on the noninvasive positioning film, the pressure sensor is used for acquiring pressure parameters between the target part and the noninvasive positioning film, and the pressure parameters are used for resetting and / or monitoring the position of the target object. By means of the noninvasive positioning device, the position of the target object can be kept consistent in the treatment process of each time, and the positioning effect and the treatment effect are effectively improved.

Description

Technical Field

[0001] The present disclosure relates to the field of medical technology, in particular to the field of tumor tracking technology, and specifically relates to a non-invasive positioning device and a positioning system. Background Art

[0002] With the progress and development of medicine, while maintaining the existing frame-fixed treatment method, the gamma knife has also developed a non-invasive mask-guided positioning fractionated radiosurgery treatment method. When performing stereotactic radiosurgery using the gamma knife, the application of non-invasive mask-guided positioning is becoming more and more widespread and important.

[0003] Currently, when based on non-invasive mask-guided positioning, a thermoplastic mask and a headrest are usually used in combination to fix the position of the patient's head. Although the patient's head can be fixed relatively firmly, achieving a precision with an error of no more than 0.5 millimeters (mm), it is difficult to ensure that the position of the patient's head remains consistent during each fractionated treatment process, thereby affecting the positioning effect and treatment outcome. Summary of the Utility Model

[0004] The present disclosure provides a non-invasive positioning device and a positioning system, which can keep the position of the target object consistent during each fractionated treatment process, effectively improving the positioning effect and treatment effect.

[0005] In a first aspect, the present disclosure provides a non-invasive positioning device, comprising:

[0006] A non-invasive positioning film, which is used to cover the target part of the target object.

[0007] At least one pressure sensor, which is arranged on the non-invasive positioning film. The pressure sensor is used to obtain the pressure parameter between the target part and the non-invasive positioning film, and the pressure parameter is used to reset and / or monitor the position of the target object.

[0008] In some embodiments, at least one pressure sensor is attached to the non-invasive positioning film, and the attachment position of each pressure sensor is different.

[0009] In some embodiments, at least one groove is provided on the non-invasive positioning film, and each groove is embedded with a pressure sensor.

[0010] In some embodiments, each pressure sensor is either a wireless pressure sensor or a wired pressure sensor.

[0011] In some embodiments, the shape and size of the non-invasive positioning film match the shape and size of the target part.

[0012] In some embodiments, the non-invasive positioning film is one of an acrylonitrile-butadiene-styrene copolymer (ABS) film, an ABS resin film, and a polylactic acid film.

[0013] In some embodiments, the non-invasive positioning film includes a non-invasive positioning front film and a non-invasive positioning rear film that are detachably connected. The non-invasive positioning front film is used to cover the target site; the non-invasive positioning rear film is used to support the target site; correspondingly, the pressure parameters include a front pressure parameter and / or a rear pressure parameter; the front pressure parameter refers to the pressure parameter between the front of the target site and the non-invasive positioning front film; the rear pressure parameter refers to the pressure parameter between the rear of the target site and the non-invasive positioning rear film.

[0014] In some embodiments, the target site is the head, the non-invasive positioning front film is a facial mask, and the non-invasive positioning rear film is a headrest; pressure sensors are provided on both the facial mask and the headrest. The pressure sensor provided on the facial mask corresponds to at least one of the frontal pole, temporal pole, zygomatic bone, and mandible of the head, and is used to detect the pressure parameter between at least one of the frontal pole, temporal pole, zygomatic bone, and mandible of the head and the facial mask; the pressure sensor provided on the headrest corresponds to the occipital pole of the head, and is used to detect the pressure parameter between the occipital pole of the head and the headrest.

[0015] In some embodiments, the non-invasive positioning film is at least one of a non-invasive positioning face mask or a non-invasive positioning body mold.

[0016] In some embodiments, the position of at least one pressure sensor on the non-invasive positioning film corresponds to at least one of the following regions, and is used to detect the pressure parameter between at least one of the following regions and the non-invasive positioning film: the frontal pole, temporal pole, zygomatic bone, mandible, and occipital pole of the head.

[0017] In a second aspect, the present disclosure further provides a positioning system, including a non-invasive positioning device, a treatment bed, and an imaging computer device. The non-invasive positioning device is any one of the optional non-invasive positioning devices in the first aspect above. The treatment bed is used to support the target object and is connected to the non-invasive positioning device. The imaging computer device is connected to at least one pressure sensor in the non-invasive positioning device, and is used to obtain the pressure parameters output by at least one pressure sensor to perform resetting and / or position monitoring on the target object.

[0018] The pressure sensor on the above non-invasive positioning film can obtain the pressure parameter between the surface of the target part of the target object and the non-invasive positioning film. Based on this, medical staff can adjust the position of the target part of the target object during each radiotherapy session, so that the pressure parameter between the surface of the target part and the non-invasive positioning film obtained by the pressure sensor on the non-invasive positioning film is the same during each radiotherapy session, that is, to ensure that the position of the target object remains the same during the positioning stage and the treatment stage of each radiotherapy session, thereby effectively improving the positioning effect and the treatment effect. Description of the Drawings

[0019] The drawings are used to better understand the present solution and do not constitute a limitation to the present disclosure. Among them:

[0020] Figure 1 It is a schematic diagram of a scenario of a positioning system provided by an embodiment of the present disclosure;

[0021] Figure 2 It is a schematic diagram of a non-invasive positioning face mask for the head provided by an embodiment of the present disclosure;

[0022] Figure 3 It is a schematic diagram of another non-invasive positioning film provided by an embodiment of the present disclosure;

[0023] Figure 4 It is a schematic diagram of a non-invasive positioning film including a plurality of grooves provided by an embodiment of the present disclosure;

[0024] Figure 5 It is a schematic diagram of a process for preparing a non-invasive positioning film provided by an embodiment of the present disclosure;

[0025] Figure 6 It is a schematic diagram of a process for monitoring the position of a target part provided by an embodiment of the present disclosure;

[0026] Figure 7 It is a schematic block diagram of an electronic device provided by an embodiment of the present disclosure. Detailed Embodiments

[0027] Next, the technical solutions in the embodiments of the present disclosure will be clearly and completely described in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without making creative efforts belong to the scope of protection of the present disclosure.

[0028] In the description of the present disclosure, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings. These are only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation on the present disclosure. In addition, the terms "first", "second", "third" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first", "second", "third" may explicitly or implicitly include one or more of the said features. In the description of the present disclosure, "a plurality" means two or more, unless otherwise specifically defined.

[0029] In the description of the present disclosure, the term "exemplary" is used to mean "serving as an example, illustration, or explanation". Any embodiment described as "exemplary" in the present disclosure is not necessarily to be construed as more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to make and use the present disclosure. In the following description, details are set forth for the purpose of explanation. It should be understood that those of ordinary skill in the art can recognize that the present disclosure can be implemented without the use of these specific details. In other instances, well-known structures and processes are not elaborated in detail to avoid obscuring the description of the present disclosure with unnecessary details. Therefore, the present disclosure is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles and features disclosed herein.

[0030] It should be noted that since the methods of the embodiments of the present disclosure are executed in an imaging computer device, the processing objects of each imaging computer device exist in the form of data or information. For example, time, which is actually time information. It can be understood that in subsequent embodiments, if dimensions, quantities, positions, etc. are mentioned, they are all corresponding data existences for the computer device to process, and specific details are not elaborated here.

[0031] The gamma knife is one of the main methods of stereotactic radiosurgery. Its classic treatment mode is single high-dose irradiation under the guidance of the Leksell head frame. With the progress and development of medicine, while maintaining the existing frame-guided treatment mode, the gamma knife has also developed a fractionated irradiation treatment mode under the guidance of a non-invasive mask positioning. Generally, it can be divided into 3-5 fractions. Therefore, this treatment mode can be called fractionated radiosurgery, and fractionated radiosurgery has gradually become one of the important treatment methods for treating tumors with larger volumes. Therefore, currently, when performing stereotactic radiosurgery with a gamma knife, the application of non-invasive mask-guided positioning is becoming more and more extensive and important.

[0032] Currently, when based on non-invasive mask-guided positioning, the method of using a thermoplastic mask in cooperation with a headrest is usually adopted to fix the position of the patient's head. Specifically, the original mask template and headrest template are heated in an oven to about 75 degrees Celsius. After taking them out, the mask and headrest are cooled until they will not scald the skin, and then they are attached to the front and back of the patient's head and shaped in time. Then they are installed in the treatment position to fix the patient's head so as to start the subsequent treatment.

[0033] However, although the method of using a thermoplastic mask in cooperation with a headrest can relatively stably fix the patient's head and achieve a precision with an error of no more than 0.5 mm, the randomness is relatively strong. As a result, during the radiotherapy process of the second fraction and each subsequent fraction (such as the third fraction, the fourth fraction, etc.), it is very difficult to completely restore the head position of the previous positioning, thus affecting the positioning effect and treatment result.

[0034] Based on the above technical problems, the embodiments of the present disclosure provide a non-invasive positioning device. The non-invasive positioning device includes a non-invasive positioning film and at least one pressure sensor arranged on the non-invasive positioning film. The non-invasive positioning film is used to cover the target part of the target object, and at least one pressure sensor on the non-invasive positioning film is used to obtain the pressure parameter between the target part and the non-invasive positioning film. The pressure parameter is used to reset and / or monitor the position of the target object.

[0035] The pressure sensor on the above non-invasive positioning film can obtain the pressure parameter between the surface of the target part of the target object and the non-invasive positioning film. Based on this, medical staff can adjust the position of the target part of the target object during each fractionated radiotherapy process so that the pressure parameter between the surface of the target part and the non-invasive positioning film obtained by the pressure sensor on the non-invasive positioning film is the same during each fractionated radiotherapy process of the target object, that is, to ensure that the position of the target object remains the same during the positioning stage and the treatment stage of each fractionated radiotherapy, thereby effectively improving the positioning effect and treatment effect.

[0036] Figure 1A schematic diagram of a scenario of a positioning system provided by an embodiment of the present disclosure. The positioning system may include a radiotherapy device 101, an imaging computer device 102, a control device 103, a non-invasive positioning device 104, and a treatment couch 105.

[0037] The radiotherapy device 101 may include a gantry 106 and a radiotherapy head 107 provided on the gantry 106.

[0038] The gantry 106 may be an annular gantry, a C-arm gantry, a drum-shaped gantry, a multi-layer bowl-shaped / cylindrical gantry, etc. The gantry 106 is a rotatable gantry that can rotate around a rotation axis or a fixed gantry that cannot move.

[0039] The radiotherapy head 107 includes a treatment radiation source for emitting treatment radiation to a target object. The beam emitted by the treatment radiation source may include a particle beam (e.g., neutron beam, proton beam, electron beam, etc.), a photon beam (e.g., X-ray beam, γ-ray beam), etc., or a combination of a particle beam and a photon beam.

[0040] The non-invasive positioning device 104 may include a non-invasive positioning film and at least one pressure sensor provided on the non-invasive positioning film.

[0041] It should be noted that, in the embodiment of the present disclosure, the pressure sensor provided on the non-invasive positioning film may be located inside the non-invasive positioning film (as shown in Figure 2 ), or may penetrate through the non-invasive positioning film (as shown in Figure 1 ), so that the pressure sensor can be observed from the outside of the non-invasive positioning film to more clearly show the positions of the respective pressure sensors inside the non-invasive positioning film. The following takes the pressure sensor provided on the non-invasive positioning film being located inside the non-invasive positioning film as an example for description.

[0042] The non-invasive positioning film is used to be worn on the target part of a patient (hereinafter referred to as the target object). The target part may be various parts such as the head, abdomen, chest, etc. When the target part is the head, the shape of the non-invasive positioning film may be the Figure 1 shown head mask.

[0043] In an alternative embodiment, the position of the pressure sensor provided on the non-invasive positioning film on the non-invasive positioning film may correspond to at least one area among the frontal pole, temporal pole, zygomatic bone, mandible, and occipital pole of the head, so as to detect the pressure parameters between at least one area among the frontal pole, temporal pole, zygomatic bone, mandible, and occipital pole of the head and the non-invasive positioning film.

[0044] In some embodiments, the non-invasive positioning film may be obtained by three-dimensional (3D) printing technology based on the shape and size of the target part, that is, the shape and size of the non-invasive positioning film match the shape and size of the target part.

[0045] In some embodiments, the material for preparing the non-invasive positioning film may be at least one of ABS, ABS resin, or polylactic acid material, that is, the non-invasive positioning film may be one of an ABS film, an ABS resin film, and a polylactic acid film.

[0046] The pressure sensor disposed on the non-invasive positioning film is used to obtain the pressure parameter between the target site and the non-invasive positioning film and send it to the imaging computer device 102, so that the imaging computer device 102 performs resetting of the target object based on the received pressure parameter between the target site and the non-invasive positioning film, and / or monitors the position of the target object.

[0047] In some embodiments, the pressure sensor on the non-invasive positioning film may be a wireless pressure sensor or a wired pressure sensor, and the embodiments of the present disclosure do not limit this.

[0048] The treatment couch 105 is used to support the target object. The non-invasive positioning device 104 and the treatment couch 105 can be connected together through a connecting member (such as a buckle). Specifically, after the target object wears the non-invasive positioning device 104 that matches the shape and size of the target site, the medical staff can connect the non-invasive positioning device 104 and the treatment couch 105 together through the buckle.

[0049] The imaging computer device 102 can also be communicatively connected to the control device 103, and the control device 103 can be communicatively connected to the radiotherapy device 101.

[0050] In some embodiments, the imaging computer device 102 is a computer device with a graphical user interface (GUI), and the computer device includes: one or more processors, a memory, and one or more application programs. For example, the imaging computer device 102 may include an Image Guidance System (IGS) application program, and the processor of the imaging computer device executes the IGS application program to implement: under the current fractionated radiotherapy, obtaining the pressure parameter between the surface of the target site of the target object and the non-invasive positioning film of the target site, comparing the pressure parameter between the surface of the target site and the non-invasive positioning film of the target site with a reference pressure parameter to obtain a comparison result, and based on the comparison result, monitoring the position of the target site or resetting the target object.

[0051] In the embodiments of the present disclosure, the imaging computer device 102 and the control device 103 may be independent servers, or a server network or server cluster composed of servers. For example, the computer device described in the embodiments of the present disclosure includes, but is not limited to, a computer, a network host, a single network server, a set of multiple network servers, or a cloud server composed of multiple servers. Among them, the cloud server is composed of a large number of computers or network servers based on cloud computing.

[0052] In the embodiments of the present disclosure, the imaging computer device 102 and the control device 103 may be general computer devices or special computer devices. In a specific implementation, the computer device may be a desktop computer, a laptop computer, a network server, a personal digital assistant (PDA), a mobile phone, a tablet computer, a wireless terminal device, a communication device, an embedded device, etc. The type of the computer device is not limited in this embodiment.

[0053] The following will combine the accompanying drawings to Figure 1 introduce in detail the non-invasive positioning film in the non-invasive positioning device 104 shown and the pressure sensors arranged on the non-invasive positioning film.

[0054] In an alternative embodiment, the non-invasive positioning film can be divided into a detachable non-invasive positioning front film and a non-invasive positioning rear film. The non-invasive positioning front film is used to cover the target site, and the non-invasive positioning rear film is used to carry the target site. For example, the non-invasive positioning front film and the non-invasive positioning rear film can be connected by one or more of screwing, clamping, etc.

[0055] The detachable non-invasive positioning front film and non-invasive positioning rear film can make it more convenient for the target object to wear.

[0056] Correspondingly, the pressure parameters between the surface of the target site and the non-invasive positioning film of the target site may include: a front pressure parameter and / or a back pressure parameter. The front pressure parameter refers to the pressure parameter between the front of the target site and the non-invasive positioning front film, and the back pressure parameter refers to the pressure parameter between the back of the target site and the non-invasive positioning rear film.

[0057] In some embodiments, when the target site is the head, the non-invasive positioning film can be called a non-invasive positioning face mask (or head mask). When the target site is other parts of the target object except the head (such as the chest, abdomen, etc.), the non-invasive positioning film can be called a non-invasive positioning body mold. The following takes the non-invasive positioning face mask as an example to introduce the non-invasive positioning film.

[0058] The non-invasive positioning mask may include a detachable facial mask (i.e., the non-invasive positioning front film) and a headrest (i.e., the non-invasive positioning rear film). On this basis, the pressure sensors provided on the facial mask correspond to at least one area of the frontal pole, temporal pole, zygomatic bone, and mandible of the head, and are respectively used to detect the pressure parameters between at least one area of the frontal pole, temporal pole, zygomatic bone, and mandible of the head and the facial mask. The pressure sensors provided on the headrest correspond to the occipital pole of the head and are used to detect the pressure parameters between the occipital pole of the head and the headrest.

[0059] Correspondingly, the front pressure parameters may include: the pressure parameters between at least one area of the frontal pole, temporal pole, zygomatic bone, and mandible of the head and the facial mask, and the back pressure parameters may include: the pressure parameters between the occipital pole of the head and the headrest.

[0060] Exemplarily, it is assumed that the number of pressure sensors provided in the non-invasive positioning mask is multiple, and the multiple pressure sensors respectively correspond to the frontal pole, zygomatic bone, and mandible of the head. Among them, one position may correspond to one pressure sensor or multiple pressure sensors. For example, Figure 2 is a schematic diagram of the non-invasive positioning mask for the head, as Figure 2 shown, the non-invasive positioning mask may include a facial mask 201 and a headrest 202. The pressure sensors provided in the facial mask 201 may include: a pressure sensor 201-A and a pressure sensor 201-B provided in the facial mask and corresponding to the frontal pole of the head, for detecting the pressure parameters between the frontal pole of the target object's head and the facial mask; a pressure sensor 201-C and a pressure sensor 201-D provided in the facial mask and corresponding to the zygomatic bone of the head, for detecting the pressure parameters between the zygomatic bone of the target object's head and the facial mask; and a pressure sensor 201-E provided in the facial mask and corresponding to the mandible of the head, for detecting the pressure parameters between the mandible of the target object's head and the facial mask.

[0061] Continuing to refer to Figure 2 , the pressure sensors provided in the headrest 202 may include: a pressure sensor 202-A, a pressure sensor 202-B, and a pressure sensor 202-C provided in the headrest and corresponding to the occipital pole of the head, for detecting the pressure parameters between the occipital pole of the target object's head and the headrest.

[0062] The pressure sensors (pressure sensor 201-A, pressure sensor 201-B, pressure sensor 201-C, pressure sensor 201-D, pressure sensor 201-E) provided in the above-mentioned facial mask 201 can send the pressure parameters detected between the frontal pole, cheekbones and mandible of the head of the target object and the facial mask to the imaging computer device after detection. The pressure sensors (pressure sensor 202-A, pressure sensor 202-B and pressure sensor 202-C) provided in the headrest 202 can send the pressure parameters detected between the occipital pole of the head of the target object and the headrest to the imaging computer device after detection. In this way, the imaging computer device can obtain the pressure parameters between the head surface of the target object and the non-invasive positioning head mask at the target site. After that, the imaging computer device can reset the target object or monitor the position of the target object based on the pressure parameters between the head surface of the target object and the non-invasive positioning head mask at the target site.

[0063] The embodiments of the present disclosure do not limit the number of pressure sensors provided in the facial mask 201 and the headrest 202, and may include more or fewer pressure sensors than those in the facial mask 201 and the headrest 202 in Figure 2 the present disclosure.

[0064] The above method of providing multiple pressure sensors in the non-invasive positioning film can obtain the pressure parameters between multiple regions of the target site and the non-invasive positioning film. The relative position between the target site and the non-invasive positioning film can be detected more accurately through the pressure parameters between multiple regions of the target site and the non-invasive positioning film, and then the target object can be reset more accurately or the position of the target object can be monitored.

[0065] In an alternative embodiment, the shape and size of the non-invasive positioning film match the shape and size of the target site.

[0066] Specifically, the non-invasive positioning film (including the non-invasive positioning front film and the non-invasive positioning rear film) of the target site can be obtained by 3D printing technology based on the shape and size of the target site.

[0067] Among them, the 3D printing technology can be the 3D printing fused filament fabrication (FFF) technology.

[0068] Specifically, when preparing the non-invasive positioning film, the 3D scanner can send the image of the target part of the target object obtained by scanning technology to the electronic device installed with parameter generation software. After receiving the image of the target part, the electronic device can determine the shape and size of the target part through the parameter generation software, and generate a 3D contour map of the target part based on the shape and size of the target part. Then, the electronic device can generate a non-invasive positioning front film that matches the front of the target part and a non-invasive positioning back film that matches the back of the target part based on the 3D contour map of the target part through 3D printing software.

[0069] Exemplarily, taking the target part as the head as an example, the facial mask (i.e., the non-invasive positioning front film) and the headrest (i.e., the non-invasive positioning back film) obtained by 3D printing technology can refer to Figure 3 As shown, the shape and size of the facial mask obtained by 3D printing technology are as Figure 3 shown in (a), which are exactly the same as the shape and size of the face (including eyes, nose, mouth, forehead, etc.) of the target object. The shape and size of the headrest obtained by 3D printing technology are as Figure 3 shown in (b), which are exactly the same as the shape and size of the back of the head of the target object.

[0070] The above scanning technology can be 3D scanning technology, magnetic resonance (MR) scanning technology, or computed tomography (CT) scanning technology. The embodiments of the present disclosure do not limit the 3D scanning technology. Correspondingly, when the scanning technology is CT scanning technology, the 3D scanner is a CT device, and when the scanning technology is MR scanning technology, the 3D scanner is an MR device.

[0071] Through the above method, the non-invasive positioning film can be customized according to the shape and size of the target part of the target object, so that the non-invasive positioning film can be perfectly fitted to the target part, effectively improving the matching degree between the non-invasive positioning film and the target part of the target object and the comfort of the target object, so as to accurately determine the position of the target part when the non-invasive positioning film is used to monitor the position of the target part subsequently.

[0072] In addition, when the target part is the head, the facial mask (i.e., the non-invasive positioning front film) and the headrest (i.e., the non-invasive positioning back film) prepared by the above method can be perfectly fitted to the front and back of the head. Compared with the spatula-shaped headrest in the related technology, it can increase the moving space of the target object, and thus effectively expand the treatment space of the target object.

[0073] After preparing the non-invasive positioning film in the above manner, medical staff can attach each pressure sensor to different positions within the non-invasive positioning film to obtain Figure 2 the non-invasive positioning film shown in the figure, which is provided with multiple pressure sensors.

[0074] In an alternative embodiment, when preparing the non-invasive positioning film based on the shape and size of the target site through 3D printing technology, a non-invasive positioning film containing multiple grooves can also be prepared based on the shape and size of the target site and the preset positions of the pressure sensors within the non-invasive positioning film, and each groove is used to embed a pressure sensor.

[0075] Exemplarily, the pressure sensor can be snap-fitted or adhered within the groove.

[0076] Specifically, when preparing the non-invasive positioning film, the 3D scanner can send the image of the target site of the target object obtained by scanning technology to an electronic device installed with parameter generation software. After receiving the image of the target site, the electronic device can determine the shape and size of the target site through the parameter generation software, and generate a 3D contour map of the target site corresponding to multiple grooves based on the shape and size of the target site and the preset positions of the pressure sensors within the non-invasive positioning film. Subsequently, the electronic device can generate a non-invasive positioning front film containing multiple grooves that matches the front of the target site and a non-invasive positioning rear film with multiple grooves that matches the back of the target site based on the 3D contour map of the target site corresponding to multiple grooves through 3D printing software.

[0077] Exemplarily, assuming the target site is the head, the positions of each pressure sensor within the preset non-invasive positioning front film include the positions corresponding to the frontal pole, zygomatic bone, and mandible of the head, and the positions of each pressure sensor within the preset non-invasive positioning rear film include the position corresponding to the occipital pole of the head. Thus, the facial mask (i.e., the non-invasive positioning front film) and the headrest (i.e., the non-invasive positioning rear film) obtained based on the shape and size of the target site and the preset positions of the pressure sensors within the non-invasive positioning film can be referred to Figure 4 as shown, the grooves included in the non-invasive positioning front film can include Figure 4 the grooves 401-A, 401-B, 401-C, 401-D, and 401-E shown in the figure, and the grooves included in the non-invasive positioning rear film can include Figure 4 the grooves 402-A, 402-B, and 402-C shown in the figure.

[0078] After preparing the non-invasive positioning film containing multiple grooves in the above manner, medical staff can attach a pressure sensor to each groove within the non-invasive positioning film to obtain Figure 2The setup shown is a non-invasive positioning film with multiple pressure sensors.

[0079] By attaching the pressure sensors in the grooves, the sensors can be installed more firmly and the non-invasive positioning film can be made flatter. After the non-invasive positioning film covers the target part of the target object, it can provide a better experience for the target object and improve the comfort of the target object.

[0080] In an alternative embodiment, the preparation material of the non-invasive positioning film can be at least one of ABS, ABS resin or polylactic acid material. Correspondingly, the prepared non-invasive positioning film is one of an ABS film, an ABS resin film or a polylactic acid film.

[0081] The following will describe the process of preparing the non-invasive positioning film in combination with the above various embodiments.

[0082] Figure 5 A schematic flow chart of preparing a non-invasive positioning film provided by an embodiment of the present disclosure is as Figure 5 shown. The method includes:

[0083] S501, a 3D scanner takes an image of the target part of the target object through scanning technology.

[0084] S502, the 3D scanner sends the image of the target part of the target object to an electronic device installed with parameter generation software.

[0085] S503, the electronic device determines the shape and size of the target part through the parameter generation software.

[0086] S504, the electronic device generates a 3D contour map of the target part based on the shape and size of the target part.

[0087] S505, based on the 3D contour map of the target part, the electronic device uses the target preparation material to generate a non-invasive positioning front film that matches the front of the target part and a non-invasive positioning back film that matches the back of the target part through 3D printing software.

[0088] Among them, the target preparation material can be at least one of ABS, ABS resin or polylactic acid material.

[0089] Specifically, the specific implementation manners of S501-S505 can refer to the descriptions in the above embodiments and will not be elaborated here.

[0090] After preparing the non-invasive positioning film by the above method, the imaging computer device can obtain the pressure parameter between the surface of the target part of the target object and the non-invasive positioning film of the target part under the current fractionated radiotherapy, compare the pressure parameter between the surface of the target part and the non-invasive positioning film of the target part with the reference pressure parameter to obtain a comparison result, and finally monitor the position of the target part or reset the target object based on the comparison result, so that under the current fractionated radiotherapy, the error between the pressure parameter between the surface of the target part of the target object and the non-invasive positioning film of the target part and the reference pressure parameter is less than or equal to the first preset threshold.

[0091] The following will introduce the process of the imaging computer device monitoring the position of the target part based on the comparison result between the pressure parameter between the surface of the target part and the non-invasive positioning film of the target part under the current fractionated radiotherapy.

[0092] Figure 6 It is a schematic flow chart of the imaging computer device monitoring the position of the target part, as Figure 6 shown, the method includes:

[0093] S601, Under the current fractionated radiotherapy, the target object wears a non-invasive positioning film (including a pre-non-invasive positioning film and a post-non-invasive positioning film) that matches the shape and size of the target part.

[0094] In the embodiments of the present disclosure, the non-invasive positioning film and the treatment couch can be fixed together by buckles. Therefore, after the target object wears a non-invasive positioning film that matches the shape and size of the target part, the medical staff can fix the non-invasive positioning film and the treatment couch together by buckles.

[0095] S602, The pressure sensor in the non-invasive positioning film obtains the pressure parameter between the surface of the target part and the non-invasive positioning film.

[0096] S603, The pressure sensor in the non-invasive positioning film sends the pressure parameter between the surface of the target part and the non-invasive positioning film to the imaging computer device.

[0097] S604, The imaging computer device compares the pressure parameter between the surface of the target part and the non-invasive positioning film with the reference pressure parameter to obtain a comparison result.

[0098] The current fractionated radiotherapy can include a positioning stage and a radiotherapy stage. The positioning stage is used to position the target object so that the position of the target object in the positioning stage of the current fractionated radiotherapy is consistent with the position of the target object when formulating the treatment plan. The radiotherapy stage is located after the positioning stage and is used to perform radiotherapy on the positioned target object through radiation rays.

[0099] When the current fractionated radiotherapy is in the positioning stage, the reference pressure parameter can be a preset pressure parameter or a pressure parameter stored during any previous fractionated treatment before the current fractionated radiotherapy.

[0100] Exemplarily, assume that the current fractionated radiotherapy is the 3rd fractionated radiotherapy. During the positioning stage of the 3rd fractionated radiotherapy, the reference pressure parameter can be a preset pressure parameter, or a pressure parameter stored during the 2nd fractionated radiotherapy, or a pressure parameter stored during the 1st fractionated radiotherapy.

[0101] When the current fractionated radiotherapy is in the radiotherapy stage, the reference pressure parameter can be a preset pressure parameter, or a pressure parameter between the surface of the target site and the non-invasive positioning film of the target site stored during the above-mentioned positioning stage, or a pressure parameter stored during any previous fractionated treatment before the current fractionated radiotherapy.

[0102] Exemplarily, in one embodiment, assume that the current fractionated radiotherapy is the 2nd fractionated radiotherapy. During the radiotherapy stage of the 2nd fractionated radiotherapy, the reference pressure parameter can be a preset pressure parameter, or a pressure parameter stored during the positioning stage of the 2nd fractionated radiotherapy, or a pressure parameter stored during the 1st fractionated radiotherapy.

[0103] The following takes the reference pressure parameter as a preset pressure parameter as an example to illustrate S604.

[0104] Specifically, after the imaging computer device obtains the pressure parameter between the surface of the target site and the non-invasive positioning film of the target site through S201, it can first obtain the preset pressure parameter (i.e., the reference pressure parameter), and subtract the pressure parameter between the surface of the target site and the non-invasive positioning film of the target site from the preset pressure parameter to obtain the error between the pressure parameter between the surface of the target site and the non-invasive positioning film of the target site of the target object and the reference pressure parameter. This error is the comparison result.

[0105] S605, the imaging computer device monitors the head position of the target object based on the comparison result.

[0106] The following respectively illustrates S605 from the positioning stage and the radiotherapy stage.

[0107] Positioning stage

[0108] When the current fractionated radiotherapy is in the positioning stage, after the imaging computer device obtains the error between the pressure parameter between the surface of the target site and the non-invasive positioning film of the target site of the target object and the reference pressure parameter, the imaging computer device can output this error and the pressure parameter between the surface of the target site and the non-invasive positioning film of the target site of the target object. Medical staff can perform different operations according to the error and the first preset threshold displayed by the imaging computer device.

[0109] The embodiments of the present disclosure do not limit the output mode of the imaging computer device. For example, the imaging computer device can output the error and the pressure parameter between the surface of the target part of the target object and the non-invasive positioning film of the target part through the display screen, or can also output the error and the pressure parameter between the surface of the target part of the target object and the non-invasive positioning film of the target part through voice broadcast.

[0110] Specifically, when the error is less than or equal to the first preset threshold, it indicates that the position of the target part of the target object is relatively close to the position of the target part when formulating the treatment plan, and the radiotherapy stage of the current fractionated radiotherapy can be entered. Accordingly, medical staff can control the treatment radiation source to emit treatment rays to the target object to achieve radiotherapy for the target object.

[0111] The embodiments of the present disclosure do not limit the first preset threshold. For example, the preset threshold can be 0 mm, or can also be 0.5 mm or 1 mm.

[0112] When the error is greater than the first preset threshold, it indicates that the position of the target part of the target object is quite different from the position of the target part when formulating the treatment plan, and the position of the target part needs to be adjusted. Accordingly, medical staff can adjust the position of the target part of the target object based on the error between the pressure parameter between the surface of the target part of the target object and the non-invasive positioning film of the target part and the reference pressure parameter. After adjustment, the imaging computer device can repeat the above Figure 2 shown steps until the error between the pressure parameter between the surface of the target part of the target object and the non-invasive positioning film of the target part and the reference pressure parameter is less than or equal to the first preset threshold.

[0113] When the above medical staff adjusts the position of the target part of the target object, they can manually adjust the position of the non-invasive positioning film worn on the target part of the target object to achieve the purpose of adjusting the position of the target part of the target object, or can also communicate with the target object to inform the target object of the direction to move, so that the target object can adjust its own position.

[0114] In an alternative embodiment, after obtaining the error between the pressure parameter between the surface of the target part of the target object and the non-invasive positioning film of the target part and the reference pressure parameter, the imaging computer device can also determine the moving direction of the target part based on the error and display the moving direction through the display screen, so that medical staff can adjust the position of the target part based on the moving direction.

[0115] Radiotherapy stage

[0116] In an alternative embodiment, when the current fractionated radiotherapy is in the radiotherapy stage, the imaging computer device can obtain the pressure parameter between the surface of the target site and the non-invasive positioning film of the target site in real time, and compare the pressure parameter between the surface of the target site and the non-invasive positioning film of the target site obtained in real time with the reference pressure parameter to obtain a comparison result. Then, when the comparison result indicates that the error between the pressure parameter between the surface of the target site and the non-invasive positioning film of the target site and the reference pressure parameter is greater than the first preset threshold and less than or equal to the second preset threshold, the imaging computer device can obtain the monitoring data of the target site captured by the monitoring device, and monitor the position of the target site based on the monitoring data and the comparison result.

[0117] The second preset threshold is greater than the first preset threshold. The embodiments of the present disclosure do not limit the second preset threshold. For example, the preset number of times can be 3 or 2.

[0118] The embodiments of the present disclosure do not limit the preset number of times. For example, the preset number of times can be 5 or 3.

[0119] The embodiments of the present disclosure do not limit the monitoring device. For example, the monitoring device can be an infrared monitoring device or a body surface optical monitoring device.

[0120] Specifically, assuming that the reference pressure parameter is a preset pressure parameter, after the imaging computer device obtains the pressure parameter between the surface of the target site and the non-invasive positioning film of the target site, it can determine the error between this pressure parameter and the preset pressure parameter. When this error is less than or equal to the first preset threshold, it indicates that the position of the target site of the target object is relatively close to the position of the target site when formulating the treatment plan. Therefore, the imaging computer device can continue to obtain the pressure parameter between the surface of the target site and the non-invasive positioning film of the target site.

[0121] When this error is greater than the first preset threshold and less than or equal to the second preset threshold, it indicates that although the position of the target site of the target object is quite different from the position of the target site when formulating the treatment plan, it is still within the adjustable range. Therefore, the imaging computer device can obtain the monitoring data of the target site captured by the monitoring device. When the monitoring data indicates that the position of the target site has not moved, it can continue to obtain the pressure parameter between the surface of the target site and the non-invasive positioning film of the target site. When the monitoring data indicates that the position of the target site has moved, it outputs the monitoring data, the pressure parameter between the surface of the target site and the non-invasive positioning film of the target site, and the error between the pressure parameter between the surface of the target site and the non-invasive positioning film of the target site and the preset pressure parameter.

[0122] Accordingly, medical staff can adjust the position of the target site based on the monitoring data and the error between the pressure parameter between the surface of the target site and the non-invasive positioning film of the target site and the preset pressure parameter, so that the error between the pressure parameter between the surface of the target site and the non-invasive positioning film of the target site and the reference pressure parameter is less than or equal to the first preset threshold.

[0123] When this error is greater than the second preset threshold, it indicates that the position of the target site of the target object is quite different from the position of the target site when formulating the treatment plan, and this treatment needs to be terminated. Therefore, the imaging computer device can output the error between the pressure parameter between the surface of the target site and the non-invasive positioning film of the target site and the preset pressure parameter and the information to terminate the treatment.

[0124] In an optional implementation manner, in the above radiotherapy stage, when the error between the pressure parameter between the surface of the target site and the non-invasive positioning film of the target site and the preset pressure parameter is less than or equal to the first preset threshold, the imaging computer device can also determine the current number of times the target site has moved, and based on the error between the pressure parameter between the surface of the target site and the non-invasive positioning film of the target site and the preset pressure parameter (i.e., the comparison result) and the current number of times the target site has moved, monitor the position of the target site.

[0125] Specifically, after the imaging computer device determines that the error between the pressure parameter between the surface of the target site and the non-invasive positioning film of the target site and the preset pressure parameter is less than or equal to the first preset threshold, it can compare the pressure parameter between the surface of the target site and the non-invasive positioning film of the target site with the pressure parameter recorded in the setup stage to obtain the setup error between the pressure parameter between the surface of the target site and the non-invasive positioning film of the target site and the pressure parameter recorded in the setup stage. If this setup error is greater than 0, it indicates that the target site of the target object has moved. The imaging computer device can determine the historical number of times the target site of the target object has moved before obtaining the pressure parameter between the surface of the target site and the non-invasive positioning film of the target site this time, that is, the historical number N, and determine the current number of times the target site has moved as N + 1.

[0126] After that, the imaging computer device can compare the current number of movements N + 1 of the target part with the preset number of times. If the current number of movements N + 1 of the target part is greater than the preset number of times, the imaging computer device can output the pressure parameter between the surface of the target part and the non-invasive positioning film of the target part, the error between the pressure parameter between the surface of the target part and the non-invasive positioning film of the target part and the preset pressure parameter, and the current number of movements N + 1 of the target part, and set N to 0. Correspondingly, the medical staff can adjust the position of the target part based on the current number of movements N + 1 of the target part and the error between the pressure parameter between the surface of the target part and the non-invasive positioning film of the target part and the preset pressure parameter, so that the target object is in a comfortable state.

[0127] In an alternative embodiment, when the current fractionated radiotherapy is in the radiotherapy stage, the imaging computer device can obtain the pressure parameter between the surface of the target part and the non-invasive positioning film of the target part in real time, and compare the pressure parameter between the surface of the target part and the non-invasive positioning film of the target part obtained in real time with the pressure parameter recorded in the setup stage to obtain a comparison result. After that, when the comparison result indicates that the current number of movements of the target part is greater than the preset number of times, the imaging computer device can monitor the position of the target part based on the comparison result.

[0128] Specifically, when the setup error between the pressure parameter between the surface of the target part and the non-invasive positioning film of the target part and the pressure parameter recorded in the setup stage is greater than 0, it indicates that the target part of the target object has moved. The imaging computer device can determine the historical number of movements of the target part of the target object, that is, the historical number N, before obtaining the pressure parameter between the surface of the target part and the non-invasive positioning film of the target part this time, and determine the current number of movements N + 1 of the target part.

[0129] After that, the imaging computer device can compare the current number of movements N + 1 of the target part with the preset number of times. If the current number of movements N + 1 of the target part is greater than the preset number of times, the imaging computer device can output the pressure parameter between the surface of the target part and the non-invasive positioning film of the target part, the error between the pressure parameter between the surface of the target part and the non-invasive positioning film of the target part and the preset pressure parameter, and the current number of movements N + 1 of the target part, and set N to 0. Correspondingly, the medical staff can adjust the position of the target part based on the current number of movements N + 1 of the target part and the error between the pressure parameter between the surface of the target part and the non-invasive positioning film of the target part and the preset pressure parameter, so that the target object is in a comfortable state.

[0130] In an alternative embodiment, during the above radiotherapy stage, when the imaging computer device obtains the pressure parameter between the surface of the target site and the non-invasive positioning film of the target site in real time, it may obtain the pressure parameter between the surface of the target site and the non-invasive positioning film of the target site once every preset time period.

[0131] The present disclosure embodiment does not limit the preset time period. For example, the preset time period may be 1 s or 2 s.

[0132] In an alternative embodiment, during the above S203, when monitoring the position of the target site based on the comparison result, the flexion parameter of the target site may further be obtained, and the position of the target site may be monitored based on the comparison result and the flexion parameter of the target site.

[0133] Among them, the flexion parameter is used to characterize the degree of bending of the target site.

[0134] The flexion parameter of the target site may include the angles of bending of at least one area in the target site. Taking the target site as the head as an example, the flexion parameter of the target site may include the angle of bending of the mandible, may also include the angle of bending of the zygomatic bone, and may further include the angles of bending of various areas such as the forehead and both sides of the cheeks. The present disclosure embodiment does not limit this.

[0135] It can be seen from the above technical content that in the embodiments of the present disclosure, when guiding and positioning based on the non-invasive positioning film, the position of the target site can be monitored through objective parameters (i.e., pressure parameters). By replicating the reference pressure parameter, even if the pressure parameter between the surface of the target site and the non-invasive positioning film of the target site is exactly the same as the reference pressure parameter, not only can the number of times of adjusting the position of the patient be reduced, but also sub-millimeter-level precise positioning can be achieved, ensuring that the position of the patient (i.e., the target object) remains consistent during the positioning stage and the treatment stage of each radiotherapy fraction, thereby effectively improving the positioning effect and the treatment effect.

[0136] In addition, in the embodiments of the present disclosure, the non-invasive positioning front film and the non-invasive positioning rear film are prepared based on 3D printing technology, so that the non-invasive positioning front film and the non-invasive positioning rear film can perfectly fit the target site of the target object. At the same time, during each radiotherapy fraction, the pressure parameter between the surface of the target site of the target object and the non-invasive positioning film of the target site can be monitored in real time to enhance the comfort of the target object during radiotherapy, thereby effectively extending the radiotherapy duration of each fraction.

[0137] Figure 7FIG. 0 shows a schematic block diagram of an exemplary electronic device 700 that can be used to implement embodiments of the present disclosure. The electronic device is intended to represent various forms of digital computers, such as, for example, laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device may also represent various forms of mobile devices, such as, for example, personal digital processors, cellular telephones, smart phones, wearable devices, and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely exemplary and are not intended to limit the implementations of the present disclosure described and / or claimed herein. In some embodiments, the electronic device may be the image computer device shown in the above Figure 1 image computer device shown.

[0138] As Figure 7 shown, the electronic device 700 includes a computing unit 701 that can perform various appropriate actions and processes according to a computer program stored in the read-only memory 702 or a computer program loaded from the storage unit 708 into the random access memory 703. In the random access memory (RAM) 703, various programs and data required for the operation of the electronic device 700 can also be stored. The computing unit 701, the read-only memory (ROM) 702, and the RAM 703 are connected to each other via a bus 704. An input / output (I / O) interface 705 is also connected to the bus 704.

[0139] Multiple components in the electronic device 700 are connected to the input / output interface 705, including: an input unit 706, such as a keyboard, a mouse, etc.; an output unit 707, such as various types of displays, speakers, etc.; a storage unit 708, such as a magnetic disk, an optical disk, etc.; and a communication unit 709, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 709 allows the electronic device 700 to exchange information / data with other devices via a computer network such as the Internet and / or various telecommunication networks.

[0140] The computing unit 701 can be various general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of the computing unit 701 include, but are not limited to, a central processing unit, a Graphics Processing Unit (GPU), various dedicated Artificial Intelligence (AI) computing chips, various computing units running machine learning model algorithms, a digital signal processor, and any suitable processor, controller, microcontroller, etc. The computing unit 701 executes the various methods and processes described above, such as the location monitoring method. For example, in one embodiment, the location monitoring method can be implemented as a computer software program, which is tangibly included in a machine-readable medium, such as the storage unit 708. In one embodiment, part or all of the computer program can be loaded and / or installed onto the electronic device 700 via the ROM 702 and / or the communication unit 709. When the computer program is loaded into the RAM 703 and executed by the computing unit 701, one or more steps of the method described above can be executed.

[0141] Various embodiments of the systems and techniques described above in this document can be implemented in digital electronic circuitry, integrated circuit systems, field programmable gate arrays, application specific integrated circuits, application specific standard parts (ASSPs), system on chip (SOC) systems, complex programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments can include: being implemented in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which can be a special-purpose or general-purpose programmable processor that receives data and instructions from a storage system, at least one input device, and at least one output device, and transmits the data and instructions to the storage system, the at least one input device, and the at least one output device.

[0142] The program code for implementing the methods of the present disclosure can be written in any combination of one or more programming languages. These program codes can be provided to a processor or controller of a general-purpose computer, a special-purpose computer, or other programmable data processing device, such that when the program codes are executed by the processor or controller, the functions / operations specified in the flowcharts and / or block diagrams are implemented. The program codes can be executed entirely on the machine, partially on the machine, as a stand-alone software package partially on the machine and partially on a remote machine, or entirely on a remote machine or server.

[0143] In the context of this disclosure, a machine-readable medium can be a tangible medium that can contain or store a program for use by or in connection with an instruction execution system, apparatus, or device. A machine-readable medium can be a machine-readable signal medium or a machine-readable storage medium. A machine-readable medium can include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination of the foregoing. More specific examples of a machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer diskette, a hard disk, a random access memory, a read-only memory, an erasable programmable read-only memory, a fiber optic, a portable compact disc read-only memory, an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0144] For providing interaction with a user, the systems and techniques described herein can be implemented on a computer having: a display device for displaying information to the user, such as, for example, a cathode ray tube (CRT) or a liquid crystal display (LCD) monitor; and a keyboard and a pointing device (such as, for example, a mouse or a trackball) by which the user can provide input to the computer. Other kinds of devices can also be used to provide interaction with the user; for example, feedback provided to the user can be any form of sensory feedback (such as, for example, visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including acoustic input, speech input, or tactile input).

[0145] The systems and techniques described herein can be implemented in a computing system that includes backend components (such as, for example, a data server), or a computing system that includes middleware components (such as, for example, an application server), or a computing system that includes frontend components (such as, for example, a user computer having a graphical user interface or a web browser through which the user can interact with an implementation of the systems and techniques described herein), or a computing system that includes any combination of such backend components, middleware components, or frontend components. The components of the system can be interconnected by any form or medium of digital data communication (such as, for example, a communication network). Examples of a communication network include: a local area network (LAN), a wide area network (WAN), and the Internet.

[0146] A computer system may include a client and a server. The client and the server are generally far from each other and usually interact via a communication network. The client-server relationship is generated by computer programs running on respective computers and having a client-server relationship with each other. The server may be a cloud server, a server of a distributed system, or a server incorporating a blockchain.

[0147] It should be understood that various forms of the processes shown above may be used, steps may be reordered, added or deleted. For example, the steps recited in the present disclosure may be executed in parallel, sequentially, or in a different order, as long as the desired results of the technical solutions of the present disclosure can be achieved, and no limitation is imposed herein.

[0148] The above specific embodiments do not constitute a limitation on the protection scope of the present disclosure. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present disclosure shall be included within the protection scope of the present disclosure.

Claims

1. A non-invasive positioning device, characterized in that, The device includes: A non-invasive positioning film; the non-invasive positioning film is used to cover the target part of the target object; At least one pressure sensor, disposed on the non-invasive positioning film; the pressure sensor is used to obtain the pressure parameter between the target part and the non-invasive positioning film; the pressure parameter is used for resetting and / or position monitoring of the target object.

2. The non-invasive positioning device according to claim 1, wherein The at least one pressure sensor is attached to the non-invasive positioning film, and the attachment positions of each pressure sensor are different.

3. The non-invasive positioning device according to claim 1, wherein At least one groove is provided on the non-invasive positioning film, and each groove is embedded with a pressure sensor.

4. The non-invasive positioning device according to claim 1, wherein Each of the pressure sensors is either a wireless pressure sensor or a wired pressure sensor.

5. The non-invasive positioning device according to claim 1, characterized in that, The shape and size of the non-invasive positioning film match the shape and size of the target part.

6. The non-invasive positioning device according to claim 1, characterized in that, The non-invasive positioning film is one of an acrylonitrile-butadiene-styrene copolymer (ABS) film, an ABS resin film, and a polylactic acid film.

7. The non-invasive positioning device according to claim 1, characterized in that The non-invasive positioning film includes: a non-invasive positioning front film and a non-invasive positioning rear film that are detachably connected. The non-invasive positioning front film is used to cover the target part; the non-invasive positioning rear film is used to carry the target part. Correspondingly, The pressure parameter includes a front pressure parameter and / or a back pressure parameter; the front pressure parameter refers to the pressure parameter between the front of the target part and the non-invasive positioning front film; the back pressure parameter refers to the pressure parameter between the back of the target part and the non-invasive positioning rear film.

8. The non-invasive positioning device according to claim 7, wherein The target part is the head, the non-invasive positioning front film is a facial mask, and the non-invasive positioning rear film is a headrest; pressure sensors are provided on both the facial mask and the headrest. The pressure sensor disposed on the facial mask corresponds to at least one of the frontal pole, temporal pole, zygomatic bone, and mandible of the head, and is used to detect the pressure parameter between at least one of the frontal pole, temporal pole, zygomatic bone, and mandible of the head and the facial mask; The pressure sensor disposed on the headrest corresponds to the occipital pole of the head, and is used to detect the pressure parameter between the occipital pole of the head and the headrest.

9. The non-invasive positioning device according to claim 1, wherein The target part is the head, and the position of the at least one pressure sensor on the non-invasive positioning film corresponds to at least one of the following regions, and is used to detect the pressure parameter between at least one of the following regions and the non-invasive positioning film: The frontal pole, temporal pole, zygomatic bone, mandible, and occipital pole of the head.

10. A positioning system, characterized in that, The system includes: A non-invasive positioning device according to any one of claims 1-9; A treatment bed, used to support the target object; the treatment bed is connected to the non-invasive positioning device; An imaging computer device; the imaging computer device is connected to at least one pressure sensor in the non-invasive positioning device, and is used to obtain the pressure parameter output by the at least one pressure sensor, so as to perform resetting and / or position monitoring on the target object.

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