CN106902479A - A kind of method of measurement thermoplastic film and the body surface goodness of fit under infrared guiding - Google Patents
A kind of method of measurement thermoplastic film and the body surface goodness of fit under infrared guiding Download PDFInfo
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- CN106902479A CN106902479A CN201710126868.XA CN201710126868A CN106902479A CN 106902479 A CN106902479 A CN 106902479A CN 201710126868 A CN201710126868 A CN 201710126868A CN 106902479 A CN106902479 A CN 106902479A
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- positioning marking
- infrared
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- 229920001169 thermoplastic Polymers 0.000 title claims abstract description 45
- 239000004416 thermosoftening plastic Substances 0.000 title claims abstract description 45
- 238000005259 measurement Methods 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000001959 radiotherapy Methods 0.000 claims abstract description 18
- 230000029058 respiratory gaseous exchange Effects 0.000 claims description 24
- 238000004441 surface measurement Methods 0.000 claims description 21
- 238000012544 monitoring process Methods 0.000 claims description 20
- 238000002591 computed tomography Methods 0.000 claims description 19
- 238000012806 monitoring device Methods 0.000 claims description 13
- 239000011324 bead Substances 0.000 claims description 8
- 239000002985 plastic film Substances 0.000 claims description 4
- 229920006255 plastic film Polymers 0.000 claims description 4
- 239000011159 matrix material Substances 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 238000003325 tomography Methods 0.000 claims 1
- 206010028980 Neoplasm Diseases 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 230000003902 lesion Effects 0.000 abstract description 3
- 238000006073 displacement reaction Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 201000011510 cancer Diseases 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 210000002615 epidermis Anatomy 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000002560 therapeutic procedure Methods 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
- A61N5/1049—Monitoring, verifying, controlling systems and methods for verifying the position of the patient with respect to the radiation beam
-
- 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
- A61N2005/1051—Monitoring, verifying, controlling systems and methods for verifying the position of the patient with respect to the radiation beam using an active marker
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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 method that the present invention discloses the measurement thermoplastic film under a kind of infrared guiding and the body surface goodness of fit.The factors such as displacement are not felt due to human body over the course for the treatment of, thermoplastic film can shift with human body, lesion center is caused to be changed relative to the position of thermoplastic film, X-ray will be caused not to be irradiated to tumor target for this or not with desired high-dose irradiation to tumor target, this has large effect to the effect treated.This method is capable of detecting when the locus deviation of thermoplastic film and body surface in radiation therapy process, and then carries out hymeniderm calibration according to deviation.
Description
Technical field
The method that the present invention discloses the measurement thermoplastic film under a kind of infrared guiding and the body surface goodness of fit.This method is being put
Penetrate in therapeutic process and be capable of detecting when the locus deviation of thermoplastic film and body surface, and then hymeniderm school is carried out according to deviation
It is accurate.
Background technology
Radiotherapy is to cure one of indispensable main method of malignant tumour.The pendulum position of therapist is operated in radiotherapy work
It is an extremely important link in work, is also that treatment plan is correct, the important guarantee of full implementation.
Radiotherapy position is the important step in radiotherapy, the purpose is to ensureing patient when radiotherapy planning is formulated and controlling
Position during treatment has the uniformity of height, so as to ensure the accurate implementation of radiotherapy planning.Under normal circumstances, physics teacher uses heat
Plastic film carrys out immobilized patients position.The Main Function of thermoplastic film fixing device is exactly to limit patient's not feeling for position in radiotherapy to move
Position, it is ensured that its can be kept in multiple radiotherapy with formulate radiotherapy planning when as position.In the process of posture radiotherapy
In, the foundation of positioning is exactly to be aligned realizing the centers such as the lesion center of human body and accelerator according to the mark line on body film.Control
The implementation for the treatment of plan and carry out radiotherapy pendulum position, be all between thermoplastic film and human body completely match premised on.Controlling
The factors such as displacement are not felt due to human body during treatment, thermoplastic film can shift with human body, cause lesion center relative to
The position of thermoplastic film changes, and this will cause X-ray not to be irradiated to tumor target or not with desired height
To tumor target, this has large effect to dose irradiation to the effect treated.
In view of the above problems, it is necessary to find it is a kind of can detect, calibrate between human body and thermoplastic film the system of deviation or
Method carrys out solve problem.
The content of the invention
In view of the shortcomings of the prior art, present invention solves the technical problem that being to measure between body surface and thermoplastic film
Locus deviation, position correction is carried out in a computer, and guide doctor pendulum position.
In order to solve the above technical problems, the technical proposal of the invention is realized in this way：
A kind of method of measurement thermoplastic film and the body surface goodness of fit under infrared guiding, including human body positioner module
With monitoring display module.Human body positioner module includes thermoplastic film and the multiple positioning marking instruments, the body surface that are fixed on film
Measurement apparatus.The module is used for the three-dimensional position of subsidiary thermoplastic film and body surface.Monitoring display module includes high accuracy
Infrared monitoring equipment and computer software.The high accuracy infrared monitoring equipment can shoot the position for obtaining above-mentioned positioning marking instrument
Confidence is ceased, and the computer software can be shown, registering, calculating operation.
It is present invention is disclosed a kind of method of measurement thermoplastic film and the body surface goodness of fit under infrared guiding including as follows
Step：
S1：Be patient's plastic film, and the fixed multiple positioning marking instruments on thermoplastic film, fixed on body surface one or
The positioning marking instrument of the multiple mark breathing states of person, referred to as respiration ball.
In at least one embodiment of the present invention, the positioning marking instrument being fixed on thermoplastic film and mark are breathed
The positioning marking instrument of state is the infrared positioning bead that can be recognized by the high accuracy infrared monitoring equipment, but the field
Technical staff without creative work, just it should be appreciated that there are other shapes that materials of obvious infrared signature are made using other
Shape mark object replaces described positioning bead.Therefore similar technical scheme is also not above presently disclosed and requires to protect
The scope of shield.
The number of the positioning marking instrument being fixed on thermoplastic film is preferably 4, if caused using less than 4 meetings
The data that high accuracy infrared monitoring equipment reads cannot correctly reflect the locus of thermoplastic film；If it exceeds 4 meetings increase
System redundancy, additional workload is brought to calculating.
The number of the positioning marking instrument for being fixed on body surface is preferably 1, to characterize the motion conditions of body surface.
If utilizing more than 1 positioning marking instrument to characterize the motion conditions of body surface, although the accurate of body surface sports immunology can be improved
Degree, but the complexity of calculating can be increased, it is unworthy from practical application.
S2：Using medical scanning device, scanning obtain human body with thermoplastic film, positioning marking instrument, respiration ball computer
Tomoscan image.
S3：The computed tomography images of S2 are imported radiotherapy treatment planning system, in radiotherapy treatment planning system
The profile and body surface profile of all positioning marking instruments are sketched out, positioning marking instrument is calculated in computed tomography image
The vertical range (being designated as gauged distance D) of centroid position coordinate and respiration ball under coordinate system to bed board plane.
S4：Using the coordinate of multiple positioning marking instruments fixed on high accuracy infrared monitoring device measuring thermoplastic film, and
It is transferred to computer.The coordinate of marking instrument is positioned under the computed tomography image coordinate system that computer combination S3 is calculated,
Registration, transition matrix between high accuracy infrared monitoring device coordinate system and computed tomography image coordinate system is calculated, the square
Battle array is designated as M.
S5：Under high accuracy infrared monitoring monitoring of tools, using one group of body surface coordinate points of body surface measurement measurement device, while
The position coordinates of high accuracy infrared monitoring device measuring respiration ball, associates the now coordinate of respiration ball and body surface coordinate, in real time will
The coordinate of respiration ball is changed to computed tomography image coordinate system according to M, is calculated and is now breathed spherical coordinates to bed board plane
Vertical range, it is compared with gauged distance D, and when its range difference is in threshold range, record body surface now is sat
Mark.By body surface measurement device change sites, repeat the step, obtain with S2 carry out medical equipment scanning phase share a common fate when
The body surface point coordinates set at quarter.
Further, the body surface measurement device is the measurement apparatus being made using positioning marking instrument, by height
Precision infrared monitoring device measuring positions marking instrument coordinate, and is transferred to computer, can be calculated the body surface measurement dress
Put the coordinate with body surface contact point.Because body surface is blocked by thermoplastic film, it is impossible to direct access epidermis coordinate, so making
With the coordinate of body surface measurement measurement device body surface.
The quantity of the positioning marking instrument for making body surface measurement device is preferably more than 3, to realize by once
Measurement, takes multiple body surface coordinate points, can so improve measurement efficiency, saves time of measuring.
In at least one embodiment of the present invention, the positioning marking instrument for being used on the body surface measurement device is can quilt
The infrared positioning bead of the high accuracy infrared monitoring equipment identification, but the technical staff in the field is without creative labor
Move, just should be appreciated that determining described in the other shapes mark object replacement being made of other materials with obvious infrared signature
Position bead.Therefore similar technical scheme is also not above presently disclosed and claimed scope.
In at least one embodiment of the present invention, the number of times of the repetition step be preferably 10 times and more than, to obtain
Take fully to describe the body surface point coordinates set of whole body surface shape.
S6：The body surface point coordinates set that will be recorded in S5 is changed to computed tomography image coordinate system according to M, with
The body surface profile identified under S3 Computer faultage image coordinate systems carries out registration, calculating deviation between the two, and this is inclined
Difference is the locus deviation between the desired thermoplastic film tried to achieve and body surface.
The beneficial effects of the present invention are：The system is detected and calibrated to the deviation between human body and thermoplastic film.
Which greatly enhances the accuracy and security of posture radiotherapy；And the system is to be based on high accuracy infrared monitoring equipment,
So ensure that the real-time and security of pendulum position calibration process.
Brief description of the drawings
Fig. 1 is schematic flow sheet of the invention.
Fig. 2 is body surface measurement schematic device.
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.
It is patient's plastic film with reference to Fig. 1, and fixed multiple positioning marking instruments on thermoplastic film, it is fixed on body surface
The positioning marking instrument of one or more mark breathing state, referred to as respiration ball.Medical scanning device scanning obtains human body
With thermoplastic film, positioning marking instrument, respiration ball computed tomography images.Computer receives the computed tomography image,
Profile, respiration ball and patient body's table skeleton of all positioning marking instruments are sketched out in radiotherapy treatment planning system, is calculated
Sphere center position coordinate under computed tomography image coordinate system of positioning marking instrument, respiration ball and respiration ball are to bed board plane
Vertical range (is designated as gauged distance D).
In at least one embodiment of the present invention, the positioning marking instrument being fixed on thermoplastic film and mark are breathed
The positioning marking instrument of state is the infrared positioning bead that can be recognized by the high accuracy infrared monitoring equipment, but the field
Technical staff without creative work, just it should be appreciated that there are other shapes that materials of obvious infrared signature are made using other
Shape mark object replaces described positioning bead.Therefore similar technical scheme is also not above presently disclosed and requires to protect
The scope of shield.
Using the coordinate of multiple positioning marking instruments fixed on high accuracy infrared monitoring device measuring thermoplastic film, passed
It is defeated by computer, its, calculating registering with the positioning marking instrument in computed tomography image is obtained high accuracy red by computer
Transition matrix between outer monitoring device coordinate system and computed tomography image coordinate system, is designated as M.
The body surface point coordinates set at moment of being shared a common fate with hospital equipment scanning phase is obtained using body surface measurement device.
The specific embodiment of the operation is：Under high accuracy infrared monitoring equipment, sat using one group of body surface of body surface measurement measurement device
Punctuate, while the position coordinates of high accuracy infrared monitoring device measuring respiration ball, now the coordinate of respiration ball is surveyed with body surface for association
The coordinate of device is measured, now respiration ball under the Coordinate Conversion of respiration ball to computed tomography image coordinate system, will be calculated in real time and is sat
The vertical range of bed board plane is marked, it is compared with gauged distance D, when range difference between the two is in threshold range
When, the record coordinate that now one group of body surface measurement device is measured.Body surface measurement device is taken out, a position is changed and is again filled body surface measurement
Put insertion body film, repeat the step, can obtain carries out medical equipment scanning phase and share a common fate the body surface point at moment with human body
Coordinate set.
In at least one embodiment of the present invention, the number of times of the repetition step be preferably 10 times and more than, to obtain
Take fully to describe the body surface point coordinates set of whole body surface shape.
With reference to Fig. 2, the body surface measurement device is the measurement apparatus being made using positioning marking instrument, by high-precision
Degree infrared monitoring device measuring positioning marking instrument coordinate, and computer is transferred to, the body surface measurement device can be calculated
With the coordinate of body surface contact point.In the figure illustrated embodiment, the quantity of the positioning marking instrument of body surface measurement device is
It is preferred that number --- 3.
Body surface point coordinates set under the high accuracy infrared monitoring device coordinate system of record is changed to computer according to M and is broken
Tomographic image coordinate system, registering, both calculating deviations are carried out with the human body contour outline identified under computed tomography image coordinate system, should
Deviation is the locus deviation between the desired thermoplastic film tried to achieve and body surface.
Claims (8)
1. the method that the present invention discloses the measurement thermoplastic film under a kind of infrared guiding and the body surface goodness of fit.It is characterized in that：
Methods described includes human body positioner module and monitoring display module；
The human body positioner module includes thermoplastic film and the multiple positioning marking instruments, the body surface measurement dress that are fixed on film
Put, the module is used for the three-dimensional position of subsidiary thermoplastic film and body surface；
The monitoring display module includes high accuracy infrared monitoring equipment and computer software.The high accuracy infrared monitoring equipment
The positional information for obtaining above-mentioned positioning marking instrument can be shot, the computer software can be shown, registering, calculating behaviour
Make.
2. measurement thermoplastic film under a kind of infrared guiding as claimed in claim 1 and the method for the body surface goodness of fit, it is special
Levy and be, the body surface measurement device is made up of multiple positioning marking instrument.
3. measurement thermoplastic film under a kind of infrared guiding as claimed in claim 2 and the method for the body surface goodness of fit, it is special
Levy and be, the positioning marking instrument is the positioning bead that can be recognized by the high accuracy infrared monitoring equipment.
4. measurement thermoplastic film under a kind of infrared guiding as claimed in claim 2 and the method for the body surface goodness of fit, it is special
Levy and be, the quantity of the positioning marking instrument for making body surface measurement device is preferably 3.
5. measurement thermoplastic film under a kind of infrared guiding as claimed in claim 1 and the method for the body surface goodness of fit, it is special
Levy and be, the multiple positioning marking instruments being fixed on film are the positioning that can be recognized by the high accuracy infrared monitoring equipment
Bead.
6. measurement thermoplastic film under a kind of infrared guiding as claimed in claim 5 and the method for the body surface goodness of fit, it is special
Levy and be, the number of the positioning marking instrument is preferably 4.
7. measurement thermoplastic film under a kind of infrared guiding as claimed in claim 1 and the method for the body surface goodness of fit, it is special
Levy and be, comprise the following steps：
S1：It is patient's plastic film, and the fixed multiple positioning marking instruments on thermoplastic film, one or many is fixed on body surface
The positioning marking instrument of individual mark breathing state, referred to as respiration ball；
S2：Using medical scanning device, scanning obtain human body with thermoplastic film, positioning marking instrument, respiration ball computerized tomography
Scan image；
S3：Computed tomography images are imported radiotherapy treatment planning system, institute is sketched out in radiotherapy treatment planning system
Have positioning marking instrument profile and body surface profile, calculate positioning marking instrument under computed tomography image coordinate system
Centroid position coordinate and respiration ball to bed board plane vertical range (being designated as gauged distance D)；
S4：Using the coordinate of multiple positioning marking instruments fixed on high accuracy infrared monitoring device measuring thermoplastic film, and transmit
To computer.The coordinate of marking instrument is positioned under the computed tomography image coordinate system that computer combination step S3 is calculated,
Registration, the transition matrix calculated between high accuracy infrared monitoring device coordinate system and computed tomography image coordinate system (are designated as
M)；
S5：Under high accuracy infrared monitoring monitoring of tools, using one group of body surface coordinate points of body surface measurement measurement device, while high-precision
The position coordinates of infrared monitoring device measuring respiration ball is spent, the now coordinate of respiration ball and body surface coordinate is associated, in real time will breathing
The coordinate of ball is changed to computed tomography image coordinate system according to M, is calculated and is now breathed spherical coordinates to the vertical of bed board plane
Distance, it is compared with gauged distance D, when its range difference is in threshold range, record body surface coordinate now.Will
Body surface measurement device changes sites, repeats the step, obtains the body at moment of being shared a common fate with medical equipment scanning phase
Table point coordinates set；
S6：Body surface point coordinates set under high accuracy infrared monitoring device coordinate system is changed to computer according to M and is broken
Under tomographic image coordinate system, both registering, calculating is carried out with the body surface profile identified under computed tomography image coordinate system
Between deviation.
8. measurement thermoplastic film under a kind of infrared guiding as claimed in claim 7 and the method for the body surface goodness of fit, it is special
Levy and be, the number of times that the step is repeated in the step S5 is preferably 10 times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710126868.XA CN106902479A (en) | 2017-02-27 | 2017-02-27 | A kind of method of measurement thermoplastic film and the body surface goodness of fit under infrared guiding |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710126868.XA CN106902479A (en) | 2017-02-27 | 2017-02-27 | A kind of method of measurement thermoplastic film and the body surface goodness of fit under infrared guiding |
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| CN106902479A true CN106902479A (en) | 2017-06-30 |
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| CN201710126868.XA Pending CN106902479A (en) | 2017-02-27 | 2017-02-27 | A kind of method of measurement thermoplastic film and the body surface goodness of fit under infrared guiding |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113975660A (en) * | 2021-10-29 | 2022-01-28 | 中国科学院合肥物质科学研究院 | Method and equipment for monitoring displacement of tumor target area |
Citations (3)
| 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 |
| JP2006055540A (en) * | 2004-08-23 | 2006-03-02 | Bloodissue Inc | Cancer treating apparatus which radiates far-infrared ray |
| 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 |
-
2017
- 2017-02-27 CN CN201710126868.XA patent/CN106902479A/en active Pending
Patent Citations (3)
| 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 |
| JP2006055540A (en) * | 2004-08-23 | 2006-03-02 | Bloodissue Inc | Cancer treating apparatus which radiates far-infrared ray |
| 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 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113975660A (en) * | 2021-10-29 | 2022-01-28 | 中国科学院合肥物质科学研究院 | Method and equipment for monitoring displacement of tumor target area |
| CN113975660B (en) * | 2021-10-29 | 2024-04-30 | 中国科学院合肥物质科学研究院 | Tumor target area displacement monitoring method and equipment |
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