CN107007944A - The method for putting position is calibrated by human projection in a kind of radiotherapy operation - Google Patents
The method for putting position is calibrated by human projection in a kind of radiotherapy operation Download PDFInfo
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- CN107007944A CN107007944A CN201710126867.5A CN201710126867A CN107007944A CN 107007944 A CN107007944 A CN 107007944A CN 201710126867 A CN201710126867 A CN 201710126867A CN 107007944 A CN107007944 A CN 107007944A
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- 238000001959 radiotherapy Methods 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 21
- 230000001225 therapeutic effect Effects 0.000 claims abstract description 16
- 238000012544 monitoring process Methods 0.000 claims description 19
- 239000011159 matrix material Substances 0.000 claims description 11
- 238000012806 monitoring device Methods 0.000 claims description 11
- 230000007704 transition Effects 0.000 claims description 11
- 239000011324 bead Substances 0.000 claims description 10
- 239000003973 paint Substances 0.000 claims description 6
- 210000004209 hair Anatomy 0.000 claims description 4
- 238000002059 diagnostic imaging Methods 0.000 claims description 3
- 230000004807 localization Effects 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract 2
- 238000010586 diagram Methods 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 206010028980 Neoplasm Diseases 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 210000003484 anatomy Anatomy 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000001575 pathological effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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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
- A61N5/1075—Monitoring, verifying, controlling systems and methods for testing, calibrating, or quality assurance of the radiation treatment apparatus
-
- 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
- A61N5/1075—Monitoring, verifying, controlling systems and methods for testing, calibrating, or quality assurance of the radiation treatment apparatus
- A61N2005/1076—Monitoring, verifying, controlling systems and methods for testing, calibrating, or quality assurance of the radiation treatment apparatus using a dummy object placed in the radiation field, e.g. phantom
-
- 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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- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Pathology (AREA)
- 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
The invention discloses calibrate the method for putting position by human projection in a kind of radiotherapy operation.In order to allow patient to be kept when treatment, a posture is motionless, and doctor can be fixed to some patients using radiotherapy localization film.But it is due to that the position that patient is lain on orientation room's bed board and therapeutic room's bed board always there are some deviations, film can be allowed to deform when causing to buckle radiotherapy localization film to patient, largely effect on the effect of radiotherapy.Method disclosed by the invention can first calibrate position of the human body on accelerator bed board before radiotherapy localization film is buckled to patient, make position of the patient on therapeutic room's bed board substantially consistent with orientation room, so as to reduce the deformation of film, it is ensured that radiotherapy quality.
Description
Technical field
The present invention discloses in a kind of radiotherapy operation and calibrates the method for putting position by human projection.
Background technology
Radiotherapy position be exactly physics teacher and operating personnel by Mobile treatment table and human body, the tumor center of patient is put
To the isocentric process of accelerator.Tumor center is that doctor is determined by medical images such as CT, the dosimeter in treatment plan
Calculate, irradiation field setting is all on the basis of this tumor center.The centers such as accelerator refer to accelerator therapy center, an acceleration
After device is installed, it etc. center be exactly determine, unique point in space.During radiotherapy, if tumor center and accelerator
Deng center superposition, patient is with regard to that can obtain best therapeutic effect.But if pendulum position is inaccurate, in tumor center and accelerator etc.
There will be deviation between the heart, normal tissue will be can't accept foot by extra irradiation, pathological tissues when radiotherapy
The irradiation of enough dosage, causes the probability of tumor recurrence to substantially increase.
Domestic radiotherapy position scheme is still based on conventional X-ray and CT simulator locatings.First in orientation room, doctor makes
Tumour in patient body is positioned with radiotherapy simulative generator, detailed process is as follows：Allow patient to lie on accelerator bed board, use radiotherapy
Patient is fixed on bed board by orientation film, and then scanning determines tumor center, is being put according to the laser indicator lamp of accelerator computer room
Treat and do cross hairs mark in orientation film.Then patient goes to therapeutic room to receive radiotherapy, the mechanical parameter of orientation room's analog machine, several
What parameter is such as therapeutic room, if so the position that lies on therapeutic room's bed board of patient and the position one lain in orientation room
Cause, the tumor center of patient just can be with the center superposition such as accelerator.For the position consistency for allowing patient to lie, doctor can be fixed with radiotherapy
The laser indicator lamp of reticle alignment computer room on the film of position carries out pendulum position.
In fact, the position that patient lies in therapeutic room can't be so accurate, always more or less there is deviation, at this moment make
Film will be allowed to deform with radiotherapy localization film, so as to substantially reduce therapeutic effect.But if before using radiotherapy localization film first really
Recognize the position suitable that patient lies, then the deformation of film will be within the acceptable range.
In view of the above problems, it is necessary to find a kind of using calibration human body location method on bed board before radiotherapy localization film.
The content of the invention
In view of the shortcomings of the prior art, present invention solves the technical problem that being the position for calibrating human body on accelerator bed board
Put, reduce the deformation of radiotherapy localization film, improve the quality of radiotherapy.The method of use be treatment when use radiotherapy localization film before,
Position of the human body on bed board is calibrated first.
In order to solve the above technical problems, the technical proposal of the invention is realized in this way：
Present invention is disclosed the method for putting position is calibrated by human projection in a kind of radiotherapy operation, comprise the following steps：
B1：Obtain the projection of body side profile and infrared monitoring device coordinate in medical image coordinate system and be tied to medical science figure
The step of transition matrix of picture coordinate system；
B2：The step of obtaining body side profile in infrared monitoring device coordinate system；
B3：Calculate the step of deviation of human body side outline projection under Two coordinate system is to adjust patient location.
The step B1 comprises the following steps：S1：Multiple positioners are pasted on orientation room's accelerator bed board, patient is entered
Row medical imaging；S2：Independent development software is opened, the medical image of patient is imported, to the human body in image along vertical coronal
The direction in face is projected, and projection is designated as A；S3：Sketch the contours of positioner in image in software, obtain all positioners it
Between relative position relation；S4：Same location fixation in therapeutic room's bed board and same number of positioner in S1, are opened red
Outer monitoring device；S5：Infrared monitoring equipment follows the trail of the coordinate for the positioner being fixed on bed board and is transferred to computer, calculates
Position relationship between the positioner obtained in machine combination step S3, registration, calculating obtain infrared monitoring device coordinate system and doctor
Learn the transition matrix between image coordinate system.
In at least one embodiment of the present invention, it is fixed on the quantity of orientation room and the positioner on therapeutic room's bed board
Preferably more than three, six-freedom degree in three dimensions can fully be shown with the motion for ensureing the positioner detected
The change of (translation and rotation in three-dimensional system of coordinate on three directions).If using less than three positioners, can influence fixed
Position precision, or even Wrong localization.The positioner of more than three can be typically selected, in order to avoid occur because positioning is lost caused by blocking
By mistake.
In at least one embodiment of the present invention, the positioner is can be recognized by infrared monitoring equipment infrared fixed
Position bead, but the technical staff in the field is without creative work, just it should be appreciated that there is obvious infrared spy using other
The other shapes mark object that the material levied is made replaces described positioning bead.Therefore similar technical scheme is also not above
Presently disclosed and claimed scope.
In at least one embodiment of the present invention, projection is done in the direction to the human body in image along vertical coronal-plane is
Refer on the side outline projection of patient to bed board.
In at least one embodiment of the present invention, the infrared monitoring equipment can recognize the positioner and return
The real-time coordinates of positioner.Infrared monitoring equipment is the equipment that can obtain positioner three-dimensional coordinate, but the field
Technical staff without creative work, just it should be appreciated that the equipment for obtaining positioner coordinate by other principles and approach.
Therefore similar technical scheme is also not above presently disclosed and claimed scope.
The step B2 comprises the following steps：S6：Patient is allowed to lie on therapeutic room's bed board and according to body surface cross hairs mark
Put position；S7：Swiped through along the side vertical of human body with profile brush, infrared monitoring equipment transmits profile and paints positioner in real time
Coordinate is to software；S8：The movement locus that direction of the software along vertical bed board paints positioner to profile is projected, projection note
For B；
In at least one embodiment of the present invention, the profile brush is independently invented, and the positioner is fixed on
The top of profile brush, the centre of profile brush is a straight-bar, and an inclinometer is fixed in bottom, and straight-bar and water is shown in inclinometer
Square to angulation.The positioner is the infrared positioning bead that can be recognized by the infrared monitoring equipment, but institute
The technical staff in field is stated without creative work, just it should be appreciated that having what the material of obvious infrared signature was made using other
Other shapes mark object replaces described positioning bead.Therefore similar technical scheme be also not above it is presently disclosed simultaneously
Claimed scope.
The step B3 comprises the following steps：S9：S5 is calculated obtained transition matrix and acts on projection B by computer, is made
It is transferred under projection A coordinate system, is calculated the deviation between two projections and is correspondingly adjusted the position of patient.S10：Repeat weight
The multiple step S6~S9 is until deviation is in certain threshold value.
The beneficial effects of the present invention are：Position of the human body on bed board can be calibrated, reduces the deformation of radiotherapy localization film, from
And improve the quality of radiotherapy.
Brief description of the drawings
Fig. 1 is the schematic flow sheet of the present invention.
Fig. 2 is the schematic diagram of the instrument profile brush used in the present invention.
Fig. 3 is the result schematic diagram that software is obtained.
Fig. 4 is application scenarios schematic diagram.
Embodiment
In order that the object, technical solutions and advantages of the present invention are clearer, below in conjunction with the accompanying drawings with specific embodiment pair
The present invention is described in detail.
With reference to Fig. 2, the positioner that profile is painted is the infrared positioning bead that can be recognized by infrared monitoring equipment.It is infrared fixed
Position bead surface, which covers one layer, can reflect the material of most directs light.Infrared monitoring equipment launches infrared light quilt
Bead is reflected, and infrared monitoring equipment receives the infrared light reflected, and analyze data calculates the three-dimensional position for obtaining bead
Coordinate is put, the purpose of monitoring positioner is realized.
With reference to Fig. 2, inclinometer is fixed on straight-bar, can test straight-bar from the horizontal by angle.Using profile brush
When measuring human body side profile, it is ensured that the registration of inclinometer is at 90 degree.Ensure that projection of the positioner coordinate on bed board is exactly straight
Bar and projection of human contact's point coordinates on bed board.Straight-bar bottom is the bottom plate of one piece of level, bottom plate be with straight-bar it is vertical,
For aiding in straight-bar to keep vertical state.
With reference to Fig. 3, software obtains the trajectory coordinates of positioner, and the projection in vertical bed board direction is done to it.With patient's
Projection of the medical anatomy structural images on the direction of vertical human coronary face is made comparisons, and software provides the adjustment direction of patient location
With distance.
With reference to Fig. 4, detailed process of the invention is as follows：
S1：Multiple positioners are fixed on orientation room's accelerator bed board, medical imaging is carried out to patient；
S2：Independent development software is opened, the medical image of patient is imported, to the human body in image along vertical coronal-plane
Direction is projected, and projection is designated as A；
S3：Positioner is sketched the contours of in image in software, the relative position relation between all positioners is obtained；
S4：Fix and set with same number of positioner in S1, opening infrared monitoring in the same location of therapeutic room's bed board
It is standby；
S5：Infrared monitoring equipment follows the trail of the coordinate for the positioner being fixed on bed board and is transferred to computer, computer
With reference to the position relationship between the positioner obtained in step S3, registration, calculating obtain infrared monitoring device coordinate system and medical science
Transition matrix between image coordinate system.
S6：Allow patient to lie on therapeutic room's bed board and position is put according to body surface cross hairs mark；
S7：Swiped through along the side vertical of human body with profile brush, infrared monitoring equipment transmits profile and paints positioning dress in real time
The coordinate put is to software；
S8：The movement locus that direction of the software along vertical bed board paints positioner to profile is projected, and projection is designated as
B；
S9：S5 is calculated obtained transition matrix and acts on projection B by computer, it is transferred under projection A coordinate system,
Calculate the deviation between two projections and correspondingly adjust the position of patient.
S10：Repeating said steps S6~S9 is repeated until deviation is in certain threshold value.
Claims (9)
1. the method for putting position is calibrated by human projection in a kind of radiotherapy operation, it is characterised in that：Methods described includes：
Obtain the projection of body side profile and infrared monitoring device coordinate in medical image coordinate system and be tied to medical image coordinate
The transition matrix of system；
Obtain body side profile in infrared monitoring device coordinate system；
The deviation of human body side outline projection under Two coordinate system is calculated to adjust patient location.
2. the method for putting position is calibrated by human projection in a kind of radiotherapy operation as claimed in claim 1, it is characterised in that institute
State and obtain in medical image coordinate system the projection of body side profile and infrared monitoring device coordinate is tied to medical image coordinate system
Transition matrix the step of comprise the following steps：S1：Multiple positioners are pasted on orientation room's accelerator bed board, patient is carried out
Medical imaging；S2：Independent development software is opened, the medical image of patient is imported, to the human body in image along vertical coronal-plane
Direction project, projection be designated as A；S3：Positioner is sketched the contours of in image in software, is obtained between all positioners
Relative position relation；S4：Same location fixation in therapeutic room's bed board and same number of positioner in S1, are opened infrared
Monitoring device；S5：Infrared monitoring equipment follows the trail of the coordinate for the positioner being fixed on bed board and is transferred to computer, computer
With reference to the position relationship between the positioner obtained in step S3, registration, calculating obtain infrared monitoring device coordinate system and medical science
Transition matrix between image coordinate system.
3. the method for putting position is calibrated by human projection in a kind of radiotherapy operation as claimed in claim 2, it is characterised in that institute
It is the infrared positioning bead that can be recognized by the infrared monitoring equipment to state positioner.
4. the method for putting position is calibrated by human projection in a kind of radiotherapy operation as claimed in claim 2, it is characterised in that institute
It is more than three to state and be fixed on therapeutic room and the quantity of positioner on orientation room's bed board.
5. the method for putting position is calibrated by human projection in a kind of radiotherapy operation as claimed in claim 2, it is characterised in that institute
It is that the coordinate system of the infrared monitoring equipment is transformed under medical image coordinate system to state transition matrix, can by the transition matrix
So that certain coordinate value of point under the coordinate system of infrared monitoring equipment to be converted to the coordinate value under medical image coordinate system.
6. the method for putting position is calibrated by human projection in a kind of radiotherapy operation as claimed in claim 1, it is characterised in that institute
Stating the step of obtaining body side profile in infrared monitoring device coordinate system includes：S6：Patient is allowed to lie on therapeutic room's bed board simultaneously
Position is put according to body surface cross hairs mark；S7：Swiped through along the side vertical of human body with profile brush, infrared monitoring equipment is transmitted in real time
Profile paints the coordinate of positioner to software；S8：Direction of the software along vertical bed board paints the fortune of positioner to profile
Dynamic rail mark is projected, and projection is designated as B.
7. the method for putting position is calibrated by human projection in a kind of radiotherapy operation as claimed in claim 6, it is characterised in that institute
State profile brush to be made up of four parts, be respectively：(1) positioner on straight-bar top, (3) are fixed on for fixing in straight-bar, (2)
The horizonal base plate of straight-bar, (4) are fixed on the inclinometer of straight-bar tail end.
8. the method for putting position is calibrated by human projection in a kind of radiotherapy operation as described in right will go 7, it is characterised in that institute
It is the infrared positioning bead that can be recognized by the infrared monitoring equipment to state positioner.
9. the method for putting position is calibrated by human projection in a kind of radiotherapy operation as claimed in claim 1, it is characterised in that institute
The step of deviation for calculating human body side outline projection under Two coordinate system is stated to adjust patient location includes：S9：Computer is by S5
Calculate obtained transition matrix and act on projection B, it is transferred under projection A coordinate system, calculate the deviation between two projections
And correspondingly adjust the position of patient.S10：Repeating said steps S6~S9 is until deviation is in certain threshold value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710126867.5A CN107007944A (en) | 2017-02-27 | 2017-02-27 | The method for putting position is calibrated by human projection in a kind of radiotherapy operation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710126867.5A CN107007944A (en) | 2017-02-27 | 2017-02-27 | The method for putting position is calibrated by human projection in a kind of radiotherapy operation |
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| CN107007944A true CN107007944A (en) | 2017-08-04 |
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| CN201710126867.5A Pending CN107007944A (en) | 2017-02-27 | 2017-02-27 | The method for putting position is calibrated by human projection in a kind of radiotherapy operation |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107510470A (en) * | 2017-09-30 | 2017-12-26 | 苏州众志医疗科技有限公司 | Positioner and localization method for medical imaging device |
| CN108434612A (en) * | 2018-01-05 | 2018-08-24 | 沈阳东软医疗系统有限公司 | A kind of QAT quality assurance test method and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2676831Y (en) * | 2003-10-09 | 2005-02-09 | 江苏富科思科技有限公司 | Radiation therapy infrared location system |
| CN103736208A (en) * | 2013-12-20 | 2014-04-23 | 山东新华医疗器械股份有限公司 | Infrared locating automatic positioning system for radiotherapy |
| CN105266902A (en) * | 2015-12-02 | 2016-01-27 | 浙江成达医疗科技有限公司 | Method for monitoring human body surface states during operations |
| CN105361950A (en) * | 2015-11-26 | 2016-03-02 | 江苏富科思科技有限公司 | Computer-assisted puncture navigation system and computer-assisted puncture navigation method under infrared guidance |
-
2017
- 2017-02-27 CN CN201710126867.5A patent/CN107007944A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2676831Y (en) * | 2003-10-09 | 2005-02-09 | 江苏富科思科技有限公司 | Radiation therapy infrared location system |
| CN103736208A (en) * | 2013-12-20 | 2014-04-23 | 山东新华医疗器械股份有限公司 | Infrared locating automatic positioning system for radiotherapy |
| CN105361950A (en) * | 2015-11-26 | 2016-03-02 | 江苏富科思科技有限公司 | Computer-assisted puncture navigation system and computer-assisted puncture navigation method under infrared guidance |
| CN105266902A (en) * | 2015-12-02 | 2016-01-27 | 浙江成达医疗科技有限公司 | Method for monitoring human body surface states during operations |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107510470A (en) * | 2017-09-30 | 2017-12-26 | 苏州众志医疗科技有限公司 | Positioner and localization method for medical imaging device |
| CN108434612A (en) * | 2018-01-05 | 2018-08-24 | 沈阳东软医疗系统有限公司 | A kind of QAT quality assurance test method and device |
| CN108434612B (en) * | 2018-01-05 | 2020-07-10 | 东软医疗系统股份有限公司 | Quality assurance testing method and device |
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