CN113694403A - Radiotherapy body frame with automatic positioning function - Google Patents
Radiotherapy body frame with automatic positioning function Download PDFInfo
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- CN113694403A CN113694403A CN202111015537.1A CN202111015537A CN113694403A CN 113694403 A CN113694403 A CN 113694403A CN 202111015537 A CN202111015537 A CN 202111015537A CN 113694403 A CN113694403 A CN 113694403A
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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
- A61N5/103—Treatment planning systems
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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
- A61N5/1048—Monitoring, verifying, controlling systems and methods
- A61N5/1049—Monitoring, verifying, controlling systems and methods for verifying the position of the patient with respect to the radiation beam
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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
- A61N5/1048—Monitoring, verifying, controlling systems and methods
- A61N5/1064—Monitoring, verifying, controlling systems and methods for adjusting radiation treatment in response to monitoring
- A61N5/1069—Target adjustment, e.g. moving the patient support
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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
- A61N5/1048—Monitoring, verifying, controlling systems and methods
- A61N5/1049—Monitoring, verifying, controlling systems and methods for verifying the position of the patient with respect to the radiation beam
- A61N2005/105—Monitoring, verifying, controlling systems and methods for verifying the position of the patient with respect to the radiation beam using a laser alignment system
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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
- A61N2005/1092—Details
- A61N2005/1097—Means for immobilizing the patient
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- Engineering & Computer Science (AREA)
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- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Radiology & Medical Imaging (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Radiation-Therapy Devices (AREA)
Abstract
Discloses a radiotherapy body frame with automatic positioning function, which comprises: an airbag matrix (2) having a plurality of airbags; a control system for controlling the inflation and deflation of the air bag; a laser body surface detector (6) for detecting the body surface information of the patient. Before a patient mold is manufactured, according to the specific concave-convex of the neck, the shoulder, the back and the waist of a patient, the air bag matrix generates a personalized and tightly attached moulding shape to position the patient, the laser detector scans the body surface parameters of the patient, and the controller system records the air bag matrix and the body surface parameters. Before treatment at every time, the state of the corresponding area airbag is restored to the positioning state according to the recorded airbag matrix parameters, after a patient lies down, the height of the airbag is automatically adjusted by comparing the body surface parameters recorded by the laser detector twice until the body surface scanning parameters are within the threshold value, and then the airbag matrix is shaped to complete automatic positioning. The invention can reduce the positioning deviation caused by physiological concave-convex of the shoulder, neck and back and physical tension, and has the functions of automatic positioning and patient fixing.
Description
Technical Field
The invention relates to a radiotherapy body frame with an automatic positioning function.
Background
Radiotherapy is one of three major means of cancer treatment, and the precondition for successful implementation is to ensure that the body position of a patient is accurately fixed. Before the radiotherapy plan is made, the patient is fixed according to the radiotherapy part, which is called radiotherapy positioning. Before each treatment, a doctor fixes the patient according to the positioning requirement, and the fixation is called radiotherapy positioning. The repeatability and precision of positioning and positioning directly influence the precision of radiotherapy. At present radiotherapy location mainly adopts a hard body frame board that levels, and the patient lies and makes fixed membrane on the body frame board, selects the membrane usually according to the radiotherapy position, divide into vacuum pad (belly pelvic cavity patient), integration membrane (chest patient), neck shoulder face guard (neck patient). In the radiotherapy at the present stage, the following two problems often occur, which cause poor fixing effect and great positioning difficulty, and seriously affect the radiotherapy precision.
First, there are physiological irregularities in the neck, back and waist of the patient, and the film does not conform completely to the body. When the integrated membrane and head, neck and shoulder mask mold is manufactured, when a patient directly lies on the flat body frame plate for fixing, the body and the body frame plate are easy to relatively move and rotate; when the vacuum pad is adopted to manufacture the mold, a patient can be shaped due to the fact that the bottom of the vacuum pad cannot be shaped in the process of shaping and fixing the vacuum pad on the plane body frame, large gaps exist among the back, the hip and the shaped vacuum pad, and positioning deviation is easily caused.
Secondly, in the positioning process before each treatment, the patient needs to manually adjust the body position by a doctor, and the positioning is completed by aligning the mark line drawn on the body surface to the fixed laser line during positioning. In the traditional method, after a patient lies on a flat plate body frame or a vacuum pad, a doctor judges the position relation between a body surface line and a laser lamp to guide the patient to lie down again or let the patient actively adjust the body slightly, and the active adjustment amplitude of the patient is usually too large or too small and needs to be adjusted for many times; for patients who use vacuum pads, they are often "stuck" in the vacuum pad, making adjustment difficult and ineffective; for paralytic patients, the doctor can only push and adjust the paralytic patients manually, and the difficulty is very great. The adjustment process takes up most of the time of positioning, and most of the time, complete matching and compromise processing cannot be achieved, so that the process is time-consuming and labor-consuming, and poor in precision and repeatability.
In the current radiotherapy location scheme, to above-mentioned problem one, have and fill the space between patient's neck, head and the neck shoulder face guard through the foamed cement, restrain the rotation of head and neck, but the process is consuming time and is laboured, and patient experience is poor, and the cost is higher, and this kind of mode also can't be used on integration membrane and vacuum pad. Aiming at the second problem, the doctor needs to manually position, and particularly for paralyzed patients clamped on the vacuum pad, the doctor is difficult to position, consumes time and labor, has poor positioning precision, and does not have a good solution.
Disclosure of Invention
The radiotherapy body frame with the automatic positioning function can reduce positioning deviation caused by physiological concave-convex of the shoulder, the neck and the back, relieve the tension of a patient, has the automatic positioning function and effectively improves the radiotherapy precision.
According to an aspect of the embodiments of the present invention, there is provided a radiotherapy body frame with an automatic positioning function, including:
a bed body;
the air bag matrix comprises a plurality of air bags, each air bag comprises a shaping part and a telescopic air bag positioned below the shaping part, low-density particle fillers are filled in the shaping part, the shaping part is connected with an air passage of the shaping part, the telescopic air bag is connected with an air passage of the telescopic air bag, a pressure sensor for detecting the pressure applied to the telescopic air bag is arranged on the telescopic air bag, and an air passage valve of the shaping part and an air passage valve of the telescopic air bag for controlling the on-off of air flow are respectively arranged on the air passage of the shaping part and the air passage of the telescopic air bag;
a control system, comprising: the air pump is used for inflating and deflating the shaping component and the telescopic air bag through the shaping component air passage and the telescopic air bag air passage; the controller is connected with the air pump, the pressure sensor, the shaping component air passage valve and the telescopic air bag air passage valve;
and the laser body surface detector is used for detecting the body surface information of the patient on the airbag matrix.
And the computer controls the inflation and deflation of the air bag in the positioning area according to the information of the laser body surface detector and the pressure sensor in the positioning process and the positioning process.
When the radiotherapy body frame with the automatic positioning function is positioned, the airbag matrix in the positioning area is controlled to be inflated, the surface of the shaping part of each airbag in the area to be positioned is in contact with the body of a patient, and meanwhile, when the pressure sensor on the telescopic airbag in the positioning area detects that the pressure reaches a set pressure threshold value, the controller turns off the air passage valve of the telescopic airbag and stops the inflation of the telescopic airbag; at the moment, the controller opens the air passage valve of the shaping part, the air in the shaping part is discharged through the air pump until a set vacuum threshold value is reached, and the pressure value and the inflation quantity of each telescopic air bag in the positioning area at the moment are recorded to finish the positioning of the patient; three-dimensionally reconstructing and recording body surface information of the positioning state of the patient through the laser body surface detector;
when the positioning is carried out, the telescopic air bags of each air bag are inflated according to the inflation quantity of the positioning area recorded during positioning, and the determined state during positioning is restored; the patient lies radiotherapy body frame later, through laser body surface detector surveys patient body surface information in real time, selects the near body surface scope of needs radiotherapy position, body surface information when contrast location and pendulum position, calculates two sets of body surface information differences, if surpass and set for the threshold value, adjusts corresponding regional gasbag the atmospheric pressure of flexible gasbag carries out six dimensions translation and rotation adjustment to patient's position, and body surface information is within setting for the threshold value when until the body surface information that detects and location, afterwards the controller is opened moulding part air flue valve will the air pump is given moulding part gas outgoing is until reaching the vacuum threshold value of setting for to fixed patient.
In the radiotherapy body frame with the automatic positioning function, the weight of a patient is judged through the pressure value transmitted back by the pressure sensor, and if the difference between the weight during treatment and the weight during positioning exceeds a set threshold, radiotherapy is suspended and repositioned.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly described below.
Fig. 1 is a schematic view of a radiotherapy body frame with an automatic positioning function according to an embodiment of the present invention.
FIG. 2 is a schematic view of an airbag provided in accordance with an embodiment of the present invention.
Fig. 3 is an exploded view of an airbag provided in accordance with an embodiment of the present invention.
Detailed Description
Referring to fig. 1, a radiotherapy body frame with an automatic positioning function comprises a bed body 1, an air bag matrix 2 positioned on the bed body 1, a control system 3 for controlling the inflation and deflation of each air bag of the air bag matrix 2, handrails 5 positioned on the bed body 1, and a laser body surface detector 6.
As shown in fig. 1 and 2, the airbag matrix 2 comprises each airbag 9 and a shaping element 7 located above it. The control system 3 comprises a controller and an air pump.
A pressure sensor for monitoring pressure is arranged between the shaping part 7 and the telescopic air bag 9. The shaping component 7 and the telescopic air bag 9 are respectively communicated with the air pump through a shaping component air passage 13 and a telescopic air bag air passage 12. The telescopic air bag air passage 12 and the shaping component air passage 13 are respectively provided with a telescopic air bag air passage valve 11 and a shaping component air passage valve 10 which are used for controlling the on-off of air flow. The controller is connected with the air pump, the pressure sensor, the shaping component air flue valve 10 and the telescopic air bag air flue valve 11.
The outer part of the shaping part 7 is made of a layer of soft nylon composite fabric with good air tightness, and the shaping part has good skin fitting performance. The inner space of the shaping part 7 is filled with a certain amount of particles, such as small foam particles 8 with low density and high hardness.
Shaping principle of the shaping component: when the human body contacts with the 'soft' shaping part 7, the corresponding below telescopic air bag 9 starts to vibrate in a small amplitude, and the texture of the nylon composite fabric outside the shaping part 7 is soft, so that the internal small foam particles 8 can be attached to and distributed on the concave-convex body surface of the human body in the vibration process. At this moment, the controller opens the air passage valve 10 of the shaping component, the air in the shaping component 7 is discharged through the air pump until the electromagnetic valve reaches a set vacuum threshold value, and the shape of the shaping component 7 is fixed and is in a hard state, so that shaping is completed.
First, patient positioning procedure
Before the radiotherapy body frame positions a patient, the shaping component 7 is in an inflated soft state, and the telescopic air bag 9 is in an uninflated state.
A doctor judges a position to be positioned by radiotherapy of a patient, controls the airbag matrix 2 of a positioning area to inflate, the airbags slowly grow, the surface of each airbag shaping component 7 of a to-be-positioned area is contacted with the body of the patient (such as the neck, the shoulders, the back, the abdominal wall at two sides of the waist, the chest wall and the like), the pressure sensor on the telescopic airbag 9 of the positioning area detects that the pressure reaches a set pressure threshold value, the controller turns off the air passage valve 11 of the telescopic airbag, the telescopic airbag 9 is stopped to inflate, and thus the shaping component 7 is in a shaping shape which is tightly attached to the patient; at this moment the controller opens moulding part air flue valve 10, through the air pump gives moulding part 7 and bleeds, until the solenoid valve reaches the vacuum threshold value of settlement, moulding part 7 shape is fixed this moment, becomes "hard" state to accomplish patient's location, record this moment the regional pressure numerical value and the inflation volume of each flexible gasbag 9 of location.
And simultaneously, the positioned body surface information is detected by the laser body surface detector 6. The laser detector 6 comprises a laser transmitting end and a receiving module, wherein the transmitting end transmits laser with a certain wavelength, the laser is reflected by the body surface of a human body and received by the receiving module, and the positions of the pixels on the body surface can be calculated according to the principle of optical triangulation, so that the body surface information of the positioning state can be three-dimensionally reconstructed and recorded.
Second, the patient's positioning process
Before the radiotherapy of the patient is put in place, the telescopic air bags 9 of each air bag are inflated according to the inflation quantity of the positioning area recorded during positioning, and the determined state during positioning is restored. The shaping part 7 of the balloon is in an inflated "soft" state. After the patient lies on the radiotherapy body frame, the body surface information of the patient is detected in real time through the laser body surface detector 6, a body surface range near the part needing radiotherapy is selected, the body surface information in positioning and placing is compared, the difference of the two groups of body surface information is calculated through a body surface registration algorithm or a CT/MRI (computed tomography/magnetic resonance imaging) fault registration algorithm, if the difference exceeds a set threshold value, the control system 3 adjusts the telescopic air bag 9 of the air bag in the corresponding area to inflate and deflate, six-dimensional translation and rotation adjustment are carried out on the body position of the patient, and the body surface information is within the set threshold value until the detected body surface information and the positioning body surface information are detected. The controller then opens the shaping component airway valve 10, and the shaping component 7 is pumped by the air pump until the solenoid valve reaches a set vacuum threshold, at which time the shaping component 7 is fixed in shape, to a "hard" state, thereby immobilizing the patient.
In addition, the controller mainly calculates the pressure value transmitted back by the pressure sensor, the weight of the patient is judged, and if the difference between the weight during treatment and the weight during positioning exceeds a set threshold value, radiotherapy is suspended and needs to be repositioned.
In addition, the radiotherapy body frame also has a massage function, the controller controls the expansion air bag 9 in the corresponding area to inflate and deflate, and the air bag matrix 2 integrally fluctuates up and down to deform, so that blood circulation promoting massage is realized.
Claims (3)
1. The utility model provides a radiotherapy body frame with automatic function of putting, its characterized in that includes:
the air bag matrix (2) comprises a plurality of air bags, each air bag comprises a shaping part (7) and a telescopic air bag (9) positioned below the shaping part, particulate matters (8) are filled in the shaping part (7), the shaping part (7) is connected with a shaping part air passage (13), the telescopic air bag (9) is connected with a telescopic air bag air passage (12), a pressure sensor for detecting the pressure applied to the telescopic air bag (9) is arranged on the shaping part air passage (13) and the telescopic air bag air passage (12), and a shaping part air passage valve (10) and a telescopic air bag air passage valve (11) for controlling the on-off of air flow are respectively arranged on the shaping part air passage (13) and the telescopic air bag air passage (12);
a control system, comprising: the air pump is used for inflating and deflating the shaping component (7) and the telescopic air bag (9) through the shaping component air passage (13) and the telescopic air bag air passage (12); the controller is connected with the air pump, the pressure sensor, the shaping component air passage valve (10) and the telescopic air bag air passage valve (11);
the laser body surface detector (6) is used for detecting the body surface information of the patient on the air bag matrix (2);
and the computer controls the inflation and deflation of the shaping part (7) of the air bag and the telescopic air bag (9) in the positioning area according to the information of the laser body surface detector (6) and the pressure sensor in the positioning process and the positioning process.
2. The radiotherapy body frame with automatic positioning function according to claim 1,
when positioning is carried out, the airbag matrix (2) in the positioning area is controlled to be inflated, the surface of the shaping part (7) of each airbag in the area to be positioned is in contact with the body of a patient, and meanwhile, when the pressure sensor on the telescopic airbag (9) in the positioning area detects that the pressure reaches a set pressure threshold value, the controller turns off the air passage valve (11) of the telescopic airbag, and the telescopic airbag (9) is stopped from being inflated; at the moment, the controller opens an air passage valve (10) of the shaping part, gas in the shaping part (7) is discharged through the air pump until a set vacuum threshold value is reached, and the pressure value and the inflation quantity of each telescopic air bag (9) in the positioning area at the moment are recorded to finish positioning of the patient; three-dimensionally reconstructing and recording body surface information of the positioning state of the patient through a laser body surface detector (6);
when the positioning is carried out, the telescopic air bag (9) of each air bag is inflated according to the inflation quantity of the positioning area recorded during positioning, and the determined state during positioning is restored; the patient lies radiotherapy body frame later, survey patient's body surface information in real time through laser body surface detector (6), select near the body surface scope that needs the radiotherapy position, body surface information when contrast location and pendulum position, calculate two sets of body surface information differences, if exceed and set for the threshold value, adjust the atmospheric pressure of the flexible gasbag (9) of corresponding regional gasbag, carry out six dimensions translation and rotation regulation to the patient position, body surface information is within setting for the threshold value when until the body surface information that detects and location, afterwards moulding part air flue valve (10) are opened to the controller, will moulding part (7) gas outgoing is given to the air pump, until reaching the vacuum threshold value of setting for fixed patient.
3. The radiotherapy body frame with the automatic positioning function according to claim 1, wherein the weight of the patient is judged through the pressure value transmitted back by the pressure sensor, and if the weight at the time of treatment is different from the weight at the time of positioning by more than a set threshold, the radiotherapy is suspended and repositioned.
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| CN202111015537.1A CN113694403B (en) | 2021-08-31 | 2021-08-31 | Radiotherapy body frame with automatic positioning function |
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| CN202111015537.1A CN113694403B (en) | 2021-08-31 | 2021-08-31 | Radiotherapy body frame with automatic positioning function |
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| CN113694403B CN113694403B (en) | 2023-05-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117482416A (en) * | 2023-12-13 | 2024-02-02 | 诺克(广州)医疗设备技术有限公司 | Radiation therapy system |
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| CN113694403B (en) | 2023-05-23 |
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