CN108514694A - A kind of CT devices in situ in radiotherapy - Google Patents
A kind of CT devices in situ in radiotherapy Download PDFInfo
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- CN108514694A CN108514694A CN201810300456.8A CN201810300456A CN108514694A CN 108514694 A CN108514694 A CN 108514694A CN 201810300456 A CN201810300456 A CN 201810300456A CN 108514694 A CN108514694 A CN 108514694A
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- 238000001959 radiotherapy Methods 0.000 title claims abstract description 42
- 238000011065 in-situ storage Methods 0.000 title claims abstract description 25
- 230000001225 therapeutic effect Effects 0.000 claims description 8
- 230000005672 electromagnetic field Effects 0.000 claims description 3
- 238000010894 electron beam technology Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims description 2
- 229910001338 liquidmetal Inorganic materials 0.000 claims description 2
- 206010028980 Neoplasm Diseases 0.000 abstract description 24
- 230000000007 visual effect Effects 0.000 abstract description 8
- 210000000056 organ Anatomy 0.000 abstract description 4
- 238000012795 verification Methods 0.000 abstract description 4
- 238000012544 monitoring process Methods 0.000 abstract description 3
- 230000033001 locomotion Effects 0.000 description 7
- 238000007408 cone-beam computed tomography Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 210000000988 bone and bone Anatomy 0.000 description 2
- 201000011510 cancer Diseases 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000037237 body shape Effects 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 239000003550 marker Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 210000004872 soft tissue Anatomy 0.000 description 1
- 210000001835 viscera Anatomy 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
- A61N5/103—Treatment planning systems
- A61N5/1039—Treatment planning systems using functional images, e.g. PET or MRI
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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)
- Apparatus For Radiation Diagnosis (AREA)
Abstract
A kind of CT devices in situ in radiotherapy, including rotary frame and the radiotherapy head that is arranged on the rotary frame, it is characterised in that：It is additionally provided with CT devices on the rotary frame or the CT devices are arranged on the CT of rotary frame center axis rotation rotation ring stands；The isocenter point of the X-ray of the CT devices is overlapped with the isocenter point for the treatment beam that the radiotherapy head is emitted.The present invention is the CT in situ by being integrated on radiotherapy rotary frame, can directly carry out location verification to tumour ontology, realize high-precision pendulum position.And the tumor image of spiral CT is clear, can be used for the variation of in-situ monitoring tumour in treatment course.It can also realize that original position does radiotherapy planning and when the variation of tumour is big, does radiotherapy planning again.X-ray tube of the present invention is specifically designed so that the visual field along human body longitudinal direction is very wide, can turn around in rack and just cover most of tumours and human organ.
Description
Technical field
The invention belongs to technical field of medical equipment, more particularly to the CT devices in situ in a kind of radiotherapy.
Background technology
In the equipment of particle radiation therapy cancer, in order to realize that beam from multiple angular illumination patient cancers, makes
Dosage on tumor target, which realizes, runs up to required high level, and the dosage suffered by the normal structure of surrounding is shone due to dispersion
It penetrates, low-level can be remained to so that the injury-free purpose of normal structure.Usually, beam can be gone out beam treatment head peace
In the rack of rotation.In this way, the rotation for passing through rack, so that it may to realize beam from multiple angular illumination patient cancer portions
Position.Before this radiotherapy, pendulum position is carried out to patient（Tumour to be treated is accurately exactly put into treatment position
On）With the verification of position.Usually, the verification of position is the spiral CT used in therapeutic room, or in the rack of rotation
Conical beam CT（CBCT）Or orthogonal X-ray photographs to realize.If with the spiral CT in therapeutic room, usually to test
After card, then with manipulator or therapeutic bed patient is transported to treatment position.This significantly, the movement of long range, entirely lean on machine
Tool hand is highly difficult come the precision of the pendulum position ensured.If using the CBCT or orthogonal X- that are mounted in the rack of rotation
Ray photographs, and is verified, since the image of current CBCT and orthogonal X-ray photographs can't clearly differentiate soft group
The boundary with tumour is knitted, the verification of pendulum position is realized by bone features or implantable marker object, since soft tissue and tumour are opposite
Bone has movement caused by internal organs movement, so the precision of the pendulum position of tumour is limited.
Invention content
Present invention aims in view of the drawbacks of the prior art, provide one kind and can directly carry out tumour ontology position to test
Card, and can be used for the variation of in-situ monitoring tumour in treatment course, it can also realize that radiotherapy planning is done and swollen in original position
When big variation occurs for tumor, the CT devices in situ in the radiotherapy of radiotherapy planning are done again.
The present invention to achieve the above object, adopts the following technical scheme that：
A kind of CT devices in situ in radiotherapy, including rotary frame and the radiotherapy head that is arranged on the rotary frame,
It is characterized in that：It is additionally provided with CT devices on the rotary frame or the CT devices are arranged around the rotary frame central shaft
On the CT rotation ring stands of rotation；The isocenter point of the X rays of the CT devices and the treatment beam of radiotherapy head outgoing
Isocenter point overlaps；The CT devices include X-ray tube and CT detectors；The X-ray tube and CT detectors are separately positioned on
Opposite both sides.
It is further characterized by：The CT detectors physical width is more than 10cm.
Further：The CT detectors are 16 to 320 row's detectors.
A kind of form of X-ray tube：The X-ray tube includes cathode, anode；The anode is length along human body longitudinal direction
Bar shaped, arc or polygon；It is provided with electromagnetic control apparatus between the cathode and anode, is used for the electricity of the emission of cathode
Beamlet quickly focuses on the different location of anode by electromagnetic field control.
For the anode together with the cage connection of X-ray tube, the anode is directly cooling by liquid or liquid metal.
A kind of CT working methods：The CT detectors are moved back and forth along human body longitudinal direction.
Another way：The X-ray tube of the CT devices is moved back and forth along human body longitudinal direction.
Also a kind of mode：The rotary frame center has the therapeutic bed moved along human body longitudinal direction.
Also a kind of mode：The CT rotation ring stands are moved back and forth along rotary frame rotary axis direction.
Also a kind of mode：The CT rotation ring stands are rotated along rotary frame rotary shaft oneself..
The present invention is the CT in situ by being integrated on radiotherapy rotary frame, position can be directly carried out to tumour ontology and tested
Card, realizes high-precision pendulum position.And the tumor image of spiral CT is clear, can be used for in-situ monitoring tumour in treatment course
Variation.It can also realize that original position does radiotherapy planning and when the variation of tumour is big, does radiotherapy planning again.X of the present invention
Ray tube is specifically designed so that the visual field along human body longitudinal direction is very wide, can turn around in rack and just cover most of tumours and people
Body organ.
Description of the drawings
Fig. 1 is that the present embodiment 1 faces cross-sectional view.
Fig. 2 is 1 side elevational cross-section structural schematic diagram of the present embodiment.
Fig. 3 is that the present embodiment 2 faces cross-sectional view.
Fig. 4 is 2 side elevational cross-section structural schematic diagram of the present embodiment.
Fig. 5 is that the present embodiment 3 faces cross-sectional view.
Fig. 6 is 3 side elevational cross-section structural schematic diagram of the present embodiment.
Wherein：1- rotary frames；2- radiotherapy heads；3- outgoing treatment beams；4- isocenter points；5-X ray tubes；6-X is penetrated
Line；7-CT detectors；8-CT detector collimator plates；9- human bodies；10- therapeutic beds；11- anodes；12- cathodes；13- electron beams；
14- electromagnetic control apparatus；15- coolant pipes；16- coolers；17-CT rotates ring stand.
Specific implementation mode
Embodiment 1：
As shown in Figure 1, 2, CT devices in situ in a kind of radiotherapy, including rotary frame 1 and setting on the rotating gantry 1
Radiotherapy head 2.CT devices are additionally provided on rotary frame 1, CT devices include X-ray tube 5 and CT detectors 7；CT detectors 7 are 16
To 320 row's detectors, it is provided with CT detectors collimator plate 8.X-ray tube 5 and CT detectors 7 are separately positioned on whirler
The opposite both sides of frame 1, the X-ray 6 that 5 anode focus of X-ray tube is sent out are received by CT detectors 7.The X-ray 6 of CT devices etc.
The isocenter point 4 that central point 4 is emitted treatment beam 3 with radiotherapy head 2 overlaps.Utilize the rotation of rotary frame 1, so that it may to realize
The in-situ scanning of CT.
If using the CT detectors of 16 rows, rotary frame 1 turns around around therapeutic bed 10 or half-turn, so that it may to reconstruct 16
The CT images of row.However, this image only has 16 rows so in the visual field width longitudinal along human body 9 of radiation focus point position
Width, about 0.8-1.2cm.This is insufficient to show most of big tumours.If CT detectors 7 are increased to 256 to 320 rows,
The fladellum of wide-angle is formed, can be extended to more than in the visual field width longitudinal along human body 9 of 4 position of isocenter point in this way
16cm.It can reconstruct along the longitudinal CT images for being more than 16cm of human body 9, most of big tumours and organ can be covered.But
It is that the CT detectors that 256 rows or more arrange are very expensive.
Embodiment 2：
As shown in Figure 3,4, the CT devices in situ in a kind of radiotherapy improved on the basis of embodiment 1, including rotary frame 1
With the radiotherapy head 2 being arranged on rotary frame 1.CT devices are additionally provided on rotary frame 1, CT devices include X-ray tube 5 and CT
Detector 7；X-ray tube 5 and CT detectors 7 are separately positioned on the opposite both sides of rotary frame 1.CT detectors 7 detect for 16 rows
Device is provided with CT detectors collimator plate 8.The isocenter point 4 of the X-ray 6 of CT devices and the outgoing treatment ray of radiotherapy head 2
The isocenter point 4 of beam 3 overlaps.X-ray tube 5 includes cathode 12, anode 11；Anode 11 is strip, arc along 9 longitudinal direction of human body
Shape or polygon；Electromagnetic control apparatus 14 is provided between cathode 12 and anode 11, the electron beam 13 for emitting cathode 12
The different location of anode 11 is quickly focused on by electromagnetic field control.
Its principle, which is exactly the focus-exposure on each anode, can cover 16 row CT detectors 7, that is, 0.8-1.2cm
Visual field width.With the focus on 5 anode 11 of X-ray tube move longitudinally to along human body 9 it is next on the position of anode 11, newly
Exposure again can cover human body 9 another 0.8-1.2cm visual field width.By this method, the position of 20 or more focuses
Can extended field of view width to 16cm, most of tumours and organ can be covered.The movement of focus on anode 11 be by
What electromagnetic control apparatus 14 controlled, it can accomplish very fast reciprocating movement, that is, the winged coke being commonly called as in CT equipment.In this way,
During rotary frame 1 rotates at a slow speed, the movement of focus fast reciprocating forms the multifocal exposure in different regulation of longitudinal angle
Light is realized and expands visual field width.To realize that rotary frame 1 turns around or half-turn around therapeutic bed 10, so that it may to reconstruct along people
Body 9 has longitudinally increased the CT images of visual field width.Anode 11 and 5 shell of X-ray tube are connected to together, thus can be direct
It is passed directly into out of cooler 16 by coolant pipe 15 cooling liquid from the back side of anode 11 and enters anode 11 and quickly cold
But anode 11.Multiple intermittent exposure contributes to the heat dissipation of anode 11 on some focal position.
Embodiment 3：
As shown in Figure 5,6, the CT devices in situ in another form of radiotherapy, including rotary frame 1, setting are in whirler
1 radiotherapy head 2 and CT devices on frame.CT devices are arranged on the CT of 1 center axis rotation of rotary frame rotation ring stands 17；CT is visited
It is that 16-320 arranges detector to survey device 7, is provided with CT detectors collimator plate 8.The isocenter point 4 of the X-ray 6 of CT devices with
The isocenter point 4 of the outgoing treatment beam 3 of radiotherapy head 2 overlaps.CT devices include X-ray tube 5 and CT detectors 7；X-ray tube 5
It is separately positioned on the opposite both sides of CT rotation ring stands 17 with CT detectors 7.CT rotate ring stand 17 along 1 rotary shaft of rotary frame from
Own rotary motion.The quick rotation of ring stand 17 is rotated with CT by CT detectors 7 and corresponding X-ray tube 5, CT rotates ring stand
17 rotary shafts 100 form the scanning of CT by isocenter point 4.Reconstruct the image of CT.
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and what is described in the above embodiment and the description is only the present invention
Principle, various changes and improvements may be made to the invention without departing from the spirit and scope of the present invention, these variation and
Improvement is both fallen in the range of claimed invention.The present invention claims protection domain by appended claims and its
Equivalent defines.
Claims (10)
1. the CT devices in situ in a kind of radiotherapy, including rotary frame and the radiotherapy head that is arranged on the rotary frame,
It is characterized in that：It is additionally provided with CT devices on the rotary frame or the CT devices are arranged around the rotary frame center
On the CT rotation ring stands of axis rotation；The CT devices include X-ray tube and CT detectors；The X-ray tube and CT detectors point
It is not arranged in opposite both sides；The isocenter point of the X-ray of the CT devices and the treatment beam of radiotherapy head outgoing
Isocenter point overlaps.
2. the CT devices in situ in radiotherapy as described in claim 1, it is characterised in that：The CT detectors physical width
More than 10cm.
3. the CT devices in situ in radiotherapy as claimed in claim 2, it is characterised in that：The CT detectors arrive for 16
320 row's detectors.
4. the CT devices in situ in radiotherapy as described in any one of claims 1-3, it is characterised in that：The X-ray tube
Including cathode, anode；The anode is strip, arc or polygon along human body longitudinal direction；Between the cathode and anode
It is provided with electromagnetic control apparatus, for the electron beam of the emission of cathode quickly to be focused on anode not by electromagnetic field control
Same position.
5. the CT devices in situ in radiotherapy as claimed in claim 4, it is characterised in that：The anode and X-ray tube
Together, the anode is directly cooling by liquid or liquid metal for cage connection.
6. the CT devices in situ in radiotherapy as described in any one of claims 1-3, it is characterised in that：The CT devices
CT detectors are moved back and forth along human body longitudinal direction.
7. the CT devices in situ in radiotherapy as described in any one of claims 1-3, it is characterised in that：The CT devices
X-ray tube is moved back and forth along human body longitudinal direction.
8. the CT devices in situ in radiotherapy as described in any one of claims 1-3, it is characterised in that：The rotary frame
Center has the therapeutic bed moved along human body longitudinal direction.
9. the CT devices in situ in radiotherapy as described in any one of claims 1-3, it is characterised in that：The CT rotating rings
Frame is moved back and forth along rotary frame rotary axis direction.
10. the CT devices in situ in radiotherapy as described in any one of claims 1-3, it is characterised in that：The CT rotations
Ring stand is rotated along rotary frame rotary shaft oneself.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810300456.8A CN108514694A (en) | 2018-04-04 | 2018-04-04 | A kind of CT devices in situ in radiotherapy |
| CN201910264699.5A CN109758682B (en) | 2018-04-04 | 2019-04-03 | In-situ CT device in radiotherapy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810300456.8A CN108514694A (en) | 2018-04-04 | 2018-04-04 | A kind of CT devices in situ in radiotherapy |
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| Publication Number | Publication Date |
|---|---|
| CN108514694A true CN108514694A (en) | 2018-09-11 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810300456.8A Pending CN108514694A (en) | 2018-04-04 | 2018-04-04 | A kind of CT devices in situ in radiotherapy |
| CN201910264699.5A Active CN109758682B (en) | 2018-04-04 | 2019-04-03 | In-situ CT device in radiotherapy |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910264699.5A Active CN109758682B (en) | 2018-04-04 | 2019-04-03 | In-situ CT device in radiotherapy |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110432920A (en) * | 2019-07-09 | 2019-11-12 | 苏州雷泰智能科技有限公司 | A kind of imaging method and system of radiotherapy CBCT |
| US11135452B2 (en) | 2018-05-02 | 2021-10-05 | Shanghai United Imaging Healthcare Co., Ltd. | Radiation systems for radiation treatment and imaging |
| WO2022052666A1 (en) * | 2020-09-08 | 2022-03-17 | Shanghai United Imaging Healthcare Co., Ltd. | X-ray imaging system for radiation therapy |
| US11951333B2 (en) | 2020-09-08 | 2024-04-09 | Shanghai United Imaging Healthcare Co., Ltd. | X-ray imaging system for radiation therapy |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002095655A (en) * | 2000-09-26 | 2002-04-02 | Shimadzu Corp | Ct apparatus |
| JP2002210029A (en) * | 2001-01-19 | 2002-07-30 | Mitsubishi Electric Corp | Radiotherapy equipment |
| DE102004050901A1 (en) * | 2004-10-19 | 2006-05-18 | Siemens Ag | Combined transmission / emission tomography device |
| EP1780676A1 (en) * | 2005-10-25 | 2007-05-02 | GSF-Forschungszentrum für Umwelt und Gesundheit GmbH | Imaging method and device with dual reading scanner |
| CN101879071A (en) * | 2010-07-01 | 2010-11-10 | 上海世鹏实验室科技发展有限公司 | Radiation treatment system |
| CN105849851B (en) * | 2013-10-29 | 2017-10-24 | 万睿视影像有限公司 | Transmitting feature can adjust and magnetic manipulation and the X-ray tube with flat emitters focused on |
-
2018
- 2018-04-04 CN CN201810300456.8A patent/CN108514694A/en active Pending
-
2019
- 2019-04-03 CN CN201910264699.5A patent/CN109758682B/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11135452B2 (en) | 2018-05-02 | 2021-10-05 | Shanghai United Imaging Healthcare Co., Ltd. | Radiation systems for radiation treatment and imaging |
| US11612767B2 (en) | 2018-05-02 | 2023-03-28 | Shanghai United Imaging Healthcare Co., Ltd. | Radiation systems for radiation treatment and imaging |
| CN110432920A (en) * | 2019-07-09 | 2019-11-12 | 苏州雷泰智能科技有限公司 | A kind of imaging method and system of radiotherapy CBCT |
| WO2022052666A1 (en) * | 2020-09-08 | 2022-03-17 | Shanghai United Imaging Healthcare Co., Ltd. | X-ray imaging system for radiation therapy |
| US11951333B2 (en) | 2020-09-08 | 2024-04-09 | Shanghai United Imaging Healthcare Co., Ltd. | X-ray imaging system for radiation therapy |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109758682B (en) | 2024-07-09 |
| CN109758682A (en) | 2019-05-17 |
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Application publication date: 20180911 |