WO2021056420A1 - Procédé, appareil, et système de détection de l'état de mouvement d'un patient - Google Patents

Procédé, appareil, et système de détection de l'état de mouvement d'un patient Download PDF

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Publication number
WO2021056420A1
WO2021056420A1 PCT/CN2019/108563 CN2019108563W WO2021056420A1 WO 2021056420 A1 WO2021056420 A1 WO 2021056420A1 CN 2019108563 W CN2019108563 W CN 2019108563W WO 2021056420 A1 WO2021056420 A1 WO 2021056420A1
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WIPO (PCT)
Prior art keywords
patient
coordinate information
movement
deviation
coordinate
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PCT/CN2019/108563
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English (en)
Chinese (zh)
Inventor
苟天昌
闫浩
李金升
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西安大医集团股份有限公司
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Application filed by 西安大医集团股份有限公司 filed Critical 西安大医集团股份有限公司
Priority to PCT/CN2019/108563 priority Critical patent/WO2021056420A1/fr
Priority to CN201980062117.3A priority patent/CN112867536B/zh
Publication of WO2021056420A1 publication Critical patent/WO2021056420A1/fr

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N5/00—Radiation therapy
    • A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy

Definitions

  • the present invention relates to the technical field of radiotherapy, in particular to a method, device and system for detecting the movement state of a patient.
  • Radiotherapy is an important means of treating tumors through radiation.
  • Stereotactic radiosurgery is a type of radiotherapy.
  • the radiotherapy equipment used in stereotactic radiosurgery treatment may include a source device, and the source device may include a source body provided with a plurality of radiation sources, and a collimator body provided with a plurality of collimating holes, and
  • the arrangement of the multiple radiation sources is consistent with the multiple collimation holes, that is, each radiation source and each collimation hole can be arranged oppositely.
  • the multiple radiation rays emitted by the radiation source can be focused on a focal point (also called beam focal point) through the collimating hole, and when the beam focal point coincides with the target point preset in the patient's affected part, reliable treatment of the patient can be realized.
  • a focal point also called beam focal point
  • the patient moves during radiotherapy, it may cause a large deviation between the beam focus and the target point.
  • the radiation may irradiate other normal organs, causing other normal organs to be irradiated by mistake.
  • the accuracy of radiotherapy is low.
  • the embodiments of the present invention provide a method, device, and system for detecting a patient's movement state, which can solve the problem of low radiotherapy accuracy in related technologies.
  • the technical solution is as follows:
  • a method for detecting the movement state of a patient includes:
  • first reference coordinate information and first coordinate information of the patient where the first reference coordinate information is the initial position information of the patient when the patient is placed, and the first coordinate information is the patient in the process of radiotherapy to the patient
  • the current position information of, and the coordinate system in which the first coordinate information and the first reference coordinate information are located are both infrared system coordinate systems;
  • the first coordinate information and the first reference coordinate information it is determined whether the patient moves.
  • the method further includes: performing treatment management on the patient according to the movement of the patient.
  • the treatment and management of the patient according to the movement of the patient includes:
  • the preset condition includes: the duration of the movement of the patient is located in the middle threshold area or the high threshold area; or the movement deviation of the patient is located in the middle threshold area or the high threshold area.
  • the movement deviation of the patient is: the deviation between the second coordinate information and the second reference coordinate information, wherein the second coordinate information is the coordinate obtained by performing coordinate transformation on the first coordinate information Information, the second reference coordinate information is coordinate information obtained after coordinate conversion is performed on the first reference coordinate information, and the coordinate systems in which the second coordinate information and the second reference coordinate information are located are both treatment beds Coordinate System;
  • the movement deviation of the patient is: the deviation between the first coordinate information and the first reference coordinate information;
  • the movement deviation of the patient is: third coordinate information
  • the third coordinate information is deviation coordinate information obtained after coordinate conversion of the deviation between the first coordinate information and the first reference coordinate information
  • the coordinate system where the third coordinate information is located is the treatment couch coordinate system.
  • the performing treatment management on the patient when the patient's movement situation satisfies a preset condition includes:
  • a warning message is issued, and the warning message is used to warn the treating physician to guide the patient to move ;
  • an instruction stop message is sent, and the instruction stop message is used to control the stop of radiotherapy.
  • the acquiring first reference coordinate information of the patient includes:
  • the coordinates of the marked reference object preset on the fixing device for fixing the patient are acquired, and the coordinates of the marked reference object on the fixing device are determined as the first reference coordinate information.
  • the number of marker reference materials on the patient's body surface is one or more.
  • the method further includes: displaying the movement deviation of the patient.
  • the displaying the movement deviation of the patient includes: displaying the movement deviation of the patient within a preset time period.
  • the displaying the movement deviation of the patient includes: displaying at least one of the movement deviation of the patient in the X-axis, Y-axis and Z-axis directions, and the X-axis, Y-axis and Z-axis are two Two orthogonal.
  • the displaying the movement deviation of the patient includes: displaying the movement deviation of the patient by using at least one of a deviation value, a discrete point, and a connection manner.
  • a device for detecting a patient's movement state includes:
  • the acquiring module is used to acquire the first reference coordinate information and first coordinate information of the patient, the first reference coordinate information is the initial position information of the patient when the patient is placed, and the first coordinate information is the radiation to the patient
  • the current position information of the patient during the treatment, and the coordinate systems in which the first coordinate information and the first reference coordinate information are located are both infrared system coordinate systems;
  • the determining module is used to determine whether the patient moves according to the first coordinate information and the first reference coordinate information.
  • the device further includes: a management module, which is used to perform treatment management on the patient according to the movement of the patient.
  • a management module which is used to perform treatment management on the patient according to the movement of the patient.
  • the management module includes: a management sub-module, configured to perform treatment management on the patient when the patient's movement situation meets a preset condition;
  • the preset condition includes: the duration of the movement of the patient is located in the middle threshold area or the high threshold area; or the movement deviation of the patient is located in the middle threshold area or the high threshold area.
  • a system for detecting the movement state of a patient includes:
  • the infrared positioning device is used to detect the first reference coordinate information and the first coordinate information of the patient under the control of the detection device of the patient's movement state, and is used to combine the first reference coordinate information and the first coordinate information.
  • the coordinate information is sent to the detection device of the patient's movement state.
  • the infrared positioning device includes: at least one infrared position sensor, and the system further includes: a marking reference object pre-arranged on the patient's body surface or a fixing device for fixing the patient, and the marking reference object is coated with Infrared reflective material;
  • the infrared position sensor is used for emitting infrared light to the marking reference object, for receiving infrared light reflected by the marking reference object, and for detecting the first reference coordinate information and the The first coordinate information.
  • each of the infrared position sensors includes: two cameras and two infrared signal generators; the infrared signal generator is used to emit infrared light to the mark reference object;
  • the camera is used to receive the infrared light reflected by the marked reference object.
  • the shape of the marking reference object is spherical.
  • a device for detecting patient movement status includes a processor and a memory, and instructions are stored in the memory, and the instructions are loaded and executed by the processor to achieve The detection method of the patient's movement state as described in the above aspect.
  • a storage medium which is characterized in that instructions are stored in the storage medium, and when the storage medium runs on a processing component, the processing component is caused to execute the patient movement status as described in the above-mentioned aspect. Detection method.
  • FIG. 1 is a schematic structural diagram of a system for detecting a patient's movement state provided by an embodiment of the present invention
  • FIG. 2 is a flowchart of a method for detecting the movement state of a patient provided by an embodiment of the present invention
  • FIG. 3 is a flowchart of another method for detecting the movement state of a patient provided by an embodiment of the present invention.
  • FIG. 4 is a block diagram of a device for detecting a patient's movement state provided by an embodiment of the present invention
  • FIG. 5 is a block diagram of another device for detecting the movement state of a patient provided by an embodiment of the present invention.
  • Fig. 6 is a block diagram of another device for detecting a patient's movement state provided by an embodiment of the present invention.
  • Fig. 1 is a schematic structural diagram of a system for detecting a patient's movement state provided by an embodiment of the present invention.
  • the system may include: an infrared positioning device 01, and a patient movement state detection device 02 that is communicatively connected with the infrared positioning device 01.
  • the infrared positioning device 01 is generally set at the end of the treatment bed 00 included in the radiotherapy system, that is, on the side of the treatment bed 00 away from the radiotherapy equipment.
  • the communication connection may be a wired connection or a wireless connection.
  • Fig. 1 takes a wired connection as an example for illustration.
  • the device 02 for detecting the patient's movement state may be a processor integrated in a terminal device.
  • the terminal device may be an upper computer.
  • the infrared positioning device 01 can obtain the patient's position information (such as coordinate information) under the control of the patient's movement state detection device 02, and can send the collected position information to the patient's movement state
  • the movement status of the patient determines the real-time position information of the target point in the affected part, and according to the real-time position information of the target point in the affected part, more precise radiotherapy is performed on the patient.
  • the device for detecting the movement state of the patient can perform treatment management on the patient based on the detected real-time position information of the patient and the acquired initial position information of the patient when the positioning is completed. For example, by comparing the patient's real-time position information with the patient's initial position information, the deviation between the two can be obtained, and the deviation can be displayed to the treating physician, so that the treating physician can control the radiotherapy equipment to stop radiation when the patient moves significantly. treatment. In this way, it is possible to prevent the patient from moving during radiotherapy, causing radiation to irradiate other normal organs, causing other normal organs to be mistakenly irradiated and causing damage.
  • FIG. 2 is a flowchart of a method for detecting a patient's movement state provided by an embodiment of the present invention. The method can be applied to the apparatus for detecting a patient's movement state shown in FIG. 1. As shown in Figure 2, the method may include:
  • Step 201 Acquire first reference coordinate information and first coordinate information of the patient.
  • the first reference coordinate information may be the initial position information of the patient when the positioning of the patient is completed, and the first coordinate information may be the current position information of the patient during radiotherapy of the patient.
  • the device for detecting the movement state of the patient may firstly control the infrared positioning device to obtain the initial position information of the patient after the patient is placed in the initial position. Then, when the patient is undergoing radiotherapy, the infrared positioning device is controlled to obtain the patient's current location information. Since the device for detecting the movement state of the patient obtains the position information of the patient through the infrared positioning device, the coordinate system in which the first coordinate information and the first reference coordinate information are located may both be an infrared system coordinate system.
  • Step 202 Determine whether the patient moves according to the first coordinate information and the first reference coordinate information.
  • the device for detecting the movement state of the patient may calculate the deviation between the first coordinate information and the first reference coordinate information after acquiring the first coordinate information and the first reference coordinate information, and determine according to the deviation Whether the patient is moving. For example, when the deviation is 0, it can be determined that the patient has not moved; when the deviation is not 0, it can be determined that the patient has moved.
  • the embodiment of the present invention provides a method for detecting the movement state of a patient.
  • This method can obtain the initial current position information of the patient (ie, the first reference coordinate information) after the positioning is completed, and can obtain the patient’s current position information (ie, the first coordinate information) during the radiotherapy process, and can be based on the first coordinate
  • the information and the first reference coordinate information determine the movement state of the patient. Therefore, in the process of radiotherapy, it can be judged whether the patient is moving in time, that is, real-time tracking of the patient's movement can be realized. Correspondingly, it can effectively avoid the problem of radiation irradiating other normal organs due to the patient's movement, causing other normal organs to be irradiated by mistake and causing damage, and the accuracy of radiotherapy is high.
  • FIG. 3 is a flowchart of another method for detecting a patient's movement state provided by an embodiment of the present invention.
  • the method can be applied to the apparatus for detecting the patient's movement state shown in FIG. 1.
  • the method may include:
  • Step 301 Acquire first reference coordinate information and first coordinate information of the patient.
  • the first reference coordinate information may be the initial position information of the patient when the positioning of the patient is completed, and the first coordinate information may be the current position information of the patient during radiotherapy of the patient.
  • the device for detecting the movement state of the patient can obtain the coordinate information of the patient through the infrared positioning device.
  • the coordinate system in which the first coordinate information and the first reference coordinate information are located may both be an infrared system coordinate system.
  • a mark that can reflect infrared light or emit infrared light can be pre-set on the patient's body surface or a fixing device (such as a mask) that fixes the patient before radiotherapy. Reference.
  • medical double-sided tape can be used to paste the marker reference on the tip of the patient’s nose, forehead, or chin; if the position to be treated is the patient’s body, medical double-sided tape can be used The glue sticks the marker reference material on the patient's chest cavity.
  • the embodiment of the present invention takes the marked reference object as a marked reference object that reflects infrared light as an example.
  • the detection device of the patient's movement state can control the infrared positioning device to advance to the front when the patient is placed in the initial position and during the radiotherapy process.
  • the set mark reference object emits infrared light.
  • the infrared positioning device can collect the coordinate information of the marked reference object according to the infrared light reflected by the marked reference object, and send the collected coordinate information to the detection device of the patient's movement state .
  • the device for detecting the movement state of the patient can acquire the first reference coordinate information and the first coordinate information of the patient.
  • the method for obtaining the first reference coordinate information is described in the following manner as an example:
  • the first optional implementation method When the positioning is completed, the detection device of the patient's movement state can obtain the coordinates of the marked reference object preset on the patient's body surface by controlling the infrared positioning device, and the marked reference object of the patient's body surface The coordinates of is determined as the first reference coordinate information.
  • the second optional implementation method when the positioning is completed, the detection device of the patient's movement state can obtain the coordinates of the marked reference object preset on the fixing device for fixing the patient by controlling the infrared positioning device, and the The coordinates of the marked reference object are determined as the first reference coordinate information.
  • the number of labeled reference objects provided on the patient's body surface may be one or more, and the embodiment of the present invention takes one as an example for description.
  • the method for obtaining the first coordinate information of the patient can also refer to the above two methods.
  • Step 302 Determine whether the patient moves according to the first coordinate information and the first reference coordinate information.
  • the first coordinate information and the first coordinate information can be obtained by comparing the first coordinate information and the first reference coordinate information. A deviation between reference coordinate information.
  • the patient moving device can determine whether the patient moves according to the calculated deviation.
  • the deviation calculated by the detection device of the patient's movement state That is, it can be (x2-x1, y2-y1, z2-z1).
  • the detection device for the patient's movement state detects that at least one of the values (x2-x1, y2-y1, z2-z1) is not 0, it can be directly determined that the patient has moved.
  • Step 303 Perform treatment management on the patient according to the movement of the patient.
  • the device for detecting the movement state of the patient can directly perform treatment management on the patient when it is determined that the patient is moving, so as to realize reliable treatment of the patient.
  • the detection device for the patient's movement status can issue a warning message for alerting the treating physician to guide the patient when it is determined that the patient is moving.
  • the detection device of the patient's movement state can detect the patient's movement.
  • the above step 303 can be: when the patient's movement satisfies the preset condition, the Patients are treated and managed.
  • the preset condition may include: the duration of the patient's movement is located in the middle threshold area or the high threshold area; or the patient's movement deviation is located in the middle threshold area or the high threshold area.
  • the middle threshold zone and the high threshold zone corresponding to the duration and the movement deviation may be fixed values pre-configured in the detection device of the patient's movement state; or, it may be the treatment physician before radiotherapy based on treatment experience or treatment plan. The value input to the detection device of the patient's movement state.
  • the treatment management of the patient may include:
  • a warning message is issued, and the warning message is used to warn the treating physician to guide the patient to move.
  • the warning information may be a voice warning
  • the movement guidance may include: the treating physician adjusts the position of the patient according to the warning information to continue radiotherapy; or, the treating physician directly controls the radiotherapy equipment to stop the radiotherapy according to the warning information.
  • the middle threshold zone corresponding to the movement deviation is 2 millimeters (mm)-3mm
  • the middle threshold zone corresponding to the movement duration is 1 second (s)-2s.
  • the patient's movement state detection device detects that the patient's movement deviation is 2.2 mm
  • the patient's movement state detection device can issue a warning message for warning the treating physician to guide the patient's movement.
  • the detection device of the patient's movement state detects that the duration of the patient's movement is 1.5s
  • the detection device of the patient's movement state can issue a warning message for alerting the treating physician to guide the patient's movement.
  • the patient's movement detection device can issue a warning to alert the treating physician to move the patient Guidance warning information.
  • an instruction stop message is sent, and the instruction stop message is used to control the stop of radiotherapy.
  • the movement deviation When the movement deviation is large, by reminding the treating physician, and then the treating physician will perform treatment management, which may cause unavoidable damage to other normal organs due to a long time problem. Therefore, when it is detected that the patient's movement deviation is located in the high threshold area, and/or the duration of the patient's movement is located in the high threshold area, and the instruction to stop information is sent directly, the reliability of radiotherapy can be further ensured.
  • the detection device of the patient's movement state detects that the patient's movement deviation is 4 mm, the detection device of the patient's movement state can directly send the instruction stop information for controlling the stop of radiotherapy. If the detection device of the patient's movement state detects that the duration of the patient's movement is 2.5s, the detection device of the patient's movement state can directly send the instruction stop information for controlling the stop of radiotherapy. If the patient's movement detection device detects that the patient's movement deviation is 4mm, and the duration of the patient's movement is 2.5s, at this time, the patient's movement detection device can directly send an instruction to stop radiotherapy. information.
  • the movement deviation of the patient may be: the deviation between the first coordinate information and the first reference coordinate information.
  • the movement deviation of the patient may be the deviation between the second coordinate information and the second reference coordinate information
  • the second coordinate information is the coordinate information obtained after the coordinate conversion of the first coordinate information
  • the second reference coordinate information is the The coordinate information obtained after coordinate conversion of the first reference coordinate information
  • the coordinate system in which the second coordinate information and the second reference coordinate information are located are both the treatment bed coordinate system.
  • the movement deviation of the patient may be: third coordinate information, and the third coordinate information may be deviation coordinate information obtained after coordinate conversion of the deviation between the first coordinate information and the first reference coordinate information, and the third coordinate information is The coordinate system at can also be the treatment couch coordinate system.
  • the treatment bed coordinate system may be: a first axis X extending along the width direction of the treatment bed 00, a second axis Y extending along the length direction of the treatment bed 00, and a coordinate system along the treatment bed 00 A three-dimensional coordinate system composed of the third axis Z extending in the height direction.
  • the device for detecting the movement state of the patient may first obtain the target rotation matrix, and then use the target rotation matrix to multiply the first reference coordinate information to obtain the second reference coordinate information; and use the target rotation and the first reference coordinate information.
  • the coordinate information is multiplied to obtain the second coordinate information.
  • the method for obtaining the target rotation matrix may include: the treating physician fixes at least one marker reference object on the treatment bed using a fixing device, and obtains the first coordinate matrix and the first coordinate matrix of the at least one marker reference object in the treatment bed coordinate system.
  • the second coordinate matrix under the infrared system coordinates, and finally, the first coordinate matrix and the inverse matrix of the second coordinate matrix are multiplied to obtain the target rotation matrix.
  • a marking reference object can be fixed on the treatment bed using a fixing device first, and then the marking reference object can be moved to a known position by controlling the treatment bed, and the coordinates of the known position are the coordinates of the marking reference object in the treatment.
  • the position in the bed coordinate system, the matrix composed of the coordinates of the known position is determined as the first coordinate matrix, and the second coordinate of the marked reference object located at the known position in the infrared system coordinate system is acquired by the infrared positioning device matrix.
  • the device for detecting the movement state of the patient can multiply the first coordinate matrix and the inverse matrix of the second coordinate matrix to obtain the target rotation matrix.
  • step 302 may further include: determining whether the patient has moved according to the deviation between the second coordinate information and the second reference coordinate information; or, according to the third coordinate information, determining whether the patient has moved.
  • Step 304 Display the movement deviation of the patient.
  • the detection device of the patient's movement state may display the calculated movement deviation.
  • the detection device of the patient's movement state includes a display component
  • the detection device of the patient's movement state can directly display the movement deviation through its display component; or, the detection device of the patient's movement state can also send the calculated movement deviation to it.
  • step 304 may include: displaying the patient's movement deviation within a preset time period. That is, the detection device for the patient's movement state can display the patient's current movement deviation and the patient's movement deviation in the previous period of time.
  • the detection device for the patient's movement state can display at least one of the movement deviations in the X-axis, Y-axis and Z-axis directions.
  • the axis and the Z axis are orthogonal to each other, for example, the movement deviation of the patient in the three-dimensional direction can be displayed.
  • the X-axis direction may extend along the width direction of the treatment bed 00
  • the Y-axis direction may extend along the length direction of the treatment bed 00
  • the Z-axis direction may extend along the height direction of the treatment bed 00.
  • the treating physician can directly know the actual movement of the patient.
  • the patient movement deviation in the infrared system coordinate system can also be displayed.
  • the display interface can display X-axis display options, Y-axis display options, and Z-axis display options
  • the patient movement state detection device can display the patient in the X-axis, Y-axis, and Z-axis directions according to the selection operation of the display options.
  • the detection device for the patient's movement state when receiving the selection operation for the X-axis display option, can display the movement deviation of the patient in the X-axis direction; when receiving the selection operation for the Y-axis display option, the patient moves The state detection device can display the patient's movement deviation in the Y-axis direction; upon receiving a selection operation for the Z-axis display option, the patient's movement state detection device can display the patient's movement deviation in the Z-axis direction.
  • the device for detecting the movement state of the patient can display the movement deviation of the patient by using at least one of a deviation value, a discrete point, and a connection mode.
  • the display interface can also display deviation values, as well as discrete point display options and connection display options.
  • the detection device for patient movement status can display the patient in a corresponding manner according to the selection operation of the display mode option.
  • the movement deviation That is, when receiving the selection operation for the discrete point display mode option, the detection device of the patient's movement state can display the acquired movement deviation of the patient in the discrete point mode; after receiving the connection mode display mode option When the operation is selected, the detection device of the patient's movement state can display the acquired movement deviation of the patient in a connected manner.
  • an early warning line can also be set in advance, and the movement deviation within the time period beyond the warning line can be highlighted. For example, it can be bold or displayed in brighter colors.
  • the embodiment of the present invention provides a method for detecting the movement state of a patient.
  • This method can obtain the initial current position information of the patient (ie, the first reference coordinate information) after the positioning is completed, and can obtain the patient’s current position information (ie, the first coordinate information) during the radiotherapy process, and can be based on the first coordinate
  • the information and the first reference coordinate information determine the movement state of the patient. Therefore, in the process of radiotherapy, it can be judged whether the patient is moving in time, that is, real-time tracking of the patient's movement can be realized. Correspondingly, it can effectively avoid the problem of radiation irradiating other normal organs due to the patient's movement, causing other normal organs to be irradiated by mistake and causing damage, and the accuracy of radiotherapy is high.
  • the labeled reference object described in the embodiment of the present invention can be one or more, only one labeled reference object can be used to detect the patient's coordinate information.
  • the use of a marker reference improves the efficiency of obtaining the coordinate information of the patient, thereby improving the efficiency of judging the patient's movement state, that is, improving the monitoring efficiency and monitoring frequency of the patient's movement. Moreover, it also effectively simplifies the process and method of monitoring patient movement.
  • Fig. 4 is a block diagram of a device for detecting the movement state of a patient provided by an embodiment of the present invention. As shown in Figure 4, the device may include:
  • the acquiring module 401 is used to acquire the first reference coordinate information and the first coordinate information of the patient, the first reference coordinate information is the initial position information of the patient when the patient is positioned, and the first coordinate information is the process of radiotherapy to the patient
  • the current position information of the patient in the middle, and the coordinate system where the first coordinate information and the first reference coordinate information are located are both infrared system coordinate systems.
  • the determining module 402 is configured to determine whether the patient moves according to the first coordinate information and the first reference coordinate information.
  • FIG. 5 is a block diagram of another device for detecting a patient's movement state provided by an embodiment of the present invention. As shown in Figure 5, the device may further include:
  • the management module 403 is used to perform treatment management on the patient according to the movement of the patient.
  • the management module 403 may include: a management sub-module, which may be used to perform treatment management on the patient when the patient's movement situation satisfies a preset condition.
  • the preset condition may include: the duration of the patient's movement is located in the middle threshold area or the high threshold area; or the patient's movement deviation is located in the middle threshold area or the high threshold area.
  • the movement deviation of the patient may be: the deviation between the second coordinate information and the second reference coordinate information, where the second coordinate information may be coordinate information obtained by performing coordinate transformation on the first coordinate information.
  • the second reference coordinate information may be coordinate information obtained after coordinate conversion is performed on the first reference coordinate information, and the coordinate system in which the second coordinate information and the second reference coordinate information are located may both be a treatment couch coordinate system.
  • the movement deviation of the patient may be: the deviation between the first coordinate information and the first reference coordinate information.
  • the movement deviation of the patient may be: third coordinate information
  • the third coordinate information may be deviation coordinate information obtained after coordinate conversion of the deviation between the first coordinate information and the first reference coordinate information, and the third coordinate information
  • the coordinate system is the treatment bed coordinate system.
  • the management sub-module can be used to send a warning message if the patient's movement deviation is located in the middle threshold area, and/or the duration of the patient's movement is located in the middle threshold area.
  • the warning information can be used to warn the treating physician to guide the patient on the move.
  • an instruction stop message is sent, and the instruction stop message can be used to control the stop of radiotherapy.
  • the obtaining module 401 can be used for:
  • the coordinates of the marked reference object preset on the patient's body surface are acquired, and the coordinates of the marked reference object on the patient's body surface are determined as the first reference coordinate information.
  • the coordinates of the marked reference object preset on the fixing device for fixing the patient are obtained, and the coordinates of the marked reference object on the fixing device are determined as the first reference coordinate information.
  • the number of labeled reference materials on the patient's body surface may be one or more.
  • FIG. 6 is a block diagram of another device for detecting a patient's movement state according to an embodiment of the present invention. As shown in Figure 6, the device may also include:
  • the display module 404 is used to display the movement deviation of the patient.
  • the display module 404 may be used to display the movement deviation of the patient within a preset time period.
  • the device further includes: the display module 404, configured to display at least one of the movement deviations of the patient in the X-axis, Y-axis, and Z-axis directions. Two orthogonal.
  • the device further includes: the display module 404, configured to display the patient's movement deviation by using at least one of a deviation value, a discrete point, and a connection mode.
  • the display module 404 configured to display the patient's movement deviation by using at least one of a deviation value, a discrete point, and a connection mode.
  • the embodiment of the present invention provides a device for detecting the movement state of a patient.
  • the device can obtain the initial current position information of the patient (ie, the first reference coordinate information) after the positioning is completed, and can obtain the patient’s current location information (ie, the first coordinate information) during the radiotherapy process, and can be based on the first coordinate
  • the information and the first reference coordinate information determine the movement state of the patient. Therefore, it is possible to determine whether the patient is moving in time during radiotherapy, that is, to track the movement of the patient. Accordingly, it can effectively prevent the movement of the patient from causing radiation to other normal organs and causing other normal organs to be affected. The problem of damage caused by mis-irradiation. The accuracy of radiotherapy is high.
  • the embodiment of the present invention also provides a system for detecting the patient's movement state.
  • the system may include: an infrared positioning device 01, and a patient movement state detection device 02 as shown in any one of FIG. 4 to FIG. 6 connected to the infrared positioning device 01 in communication.
  • the infrared positioning device 01 can be used to detect the first reference coordinate information and the first coordinate information of the patient under the control of the detection device 02 of the patient's movement state, and to combine the first reference coordinate information and the first coordinate information The information is sent to the detection device 02 of the patient's movement state.
  • the infrared positioning device 01 may include: at least one infrared position sensor.
  • the system may further include: a marking reference object pre-arranged on the patient's body surface or a fixing device for fixing the patient, and the marking reference object may also be coated with an infrared light reflecting material.
  • a marking reference object pre-arranged on the patient's body surface or a fixing device for fixing the patient
  • the marking reference object may also be coated with an infrared light reflecting material.
  • the number of labeled reference objects may be one or more, and the embodiments of the present invention take the number of labeled reference objects as an example for description.
  • each infrared position sensor can be used to emit infrared light to the mark reference object, to receive the infrared light reflected by the mark reference object, and to detect the first reference coordinate information and the first coordinate information according to the received infrared light.
  • each infrared position sensor may include: two cameras and two infrared signal generators.
  • the infrared signal generator can be used to emit infrared light to the marking reference object.
  • the camera can be used to receive the infrared light reflected by the marked reference object.
  • the two infrared signal generators may both be composed of an array of infrared light-emitting diodes, and the array of infrared light-emitting diodes may emit infrared light.
  • Each camera can include: a lens and an image sensor. The lens can focus the infrared light from the marked reference object on the image sensor, so that the image sensor can reliably collect the infrared light, and then reliably obtain the patient's coordinate information based on the collected infrared light .
  • the shape of the mark reference object may be a regular shape, for example, it may be a spherical shape.
  • the diameter of the sphere can be 11 millimeters (mm), and the weight can be less than 1 kilogram (kg).
  • the embodiment of the present invention provides a device for detecting the movement state of a patient.
  • the device for detecting the patient's movement state may include a processor and a memory, and instructions are stored in the memory, and the instructions may be loaded and executed by the processor to implement the method for detecting the patient's movement state as shown in FIG. 2 or FIG. 3.
  • an embodiment of the present invention provides a storage medium that stores instructions in the storage medium.
  • the processing component can execute the patient movement state shown in FIG. 2 or FIG. 3 Detection method.

Abstract

La présente invention concerne un procédé, un appareil, et un système de détection de l'état de mouvement d'un patient. Le procédé comprend : l'obtention de premières informations de coordonnées de référence d'un patient lorsqu'une configuration initiale de patient est achevée ; l'obtention des premières informations de coordonnées du patient pendant un processus de radiothérapie ; et la détermination de l'état de mouvement du patient en fonction des premières informations de coordonnées et des premières informations de coordonnées de référence. Par conséquent, dans le processus de radiothérapie, le fait que le patient se déplace peut être déterminé de façon opportune, c'est-à-dire que l'état de mouvement du patient est suivi, de sorte que le problème selon lequel des rayons de rayonnement sont irradiés par erreur vers d'autres organes normaux et causent des dommages dans les autres organes normaux en raison du mouvement du patient peut être efficacement évité. La précision de la radiothérapie est élevée.
PCT/CN2019/108563 2019-09-27 2019-09-27 Procédé, appareil, et système de détection de l'état de mouvement d'un patient WO2021056420A1 (fr)

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CN201980062117.3A CN112867536B (zh) 2019-09-27 2019-09-27 患者移动状态的检测方法、装置及系统

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