CN208838901U - A kind of CT device in situ being integrated into fixed particle beams radiotherapy room - Google Patents

Abstract

A kind of CT device in situ being integrated into fixed particle beams radiotherapy room, the radiotherapy head including fixed setting are arranged in the radiotherapy chair rotated in radiotherapy room, are additionally provided with CT device in radiotherapy room；The X-ray tube and detector of CT device are fixedly installed or are arranged on the CT rotation ring stand of radiotherapy chair rotary shaft rotation；The isocenter point of the X-ray of CT device is overlapped with the isocenter point that radiotherapy head is emitted treatment beam.The utility model can directly carry out location verification to tumour ontology, realize high-precision tumour pendulum position by forming original position CT on integrated CT to the isocenter point for the treatment of.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 big variation occurs for tumour, does radiotherapy planning again.The utility model X-ray tube can turn around in radiotherapy chair so that the visual field along human body longitudinal direction is very wide and just cover most of tumours and human organ.

Description

A kind of CT device in situ being integrated into fixed particle beams radiotherapy room

Technical field

The utility model belongs to technical field of medical equipment, more particularly to a kind of fixed particle beams radiotherapy room of being integrated into CT device in situ.

Background technique

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 dosage suffered by the normal tissue of surrounding is shone due to dispersion It penetrates, low-level can be remained to, so that the purpose that normal tissue is injury-free generally can vertically be fixed on patient rotation On the radiotherapy chair turned, pass through the rotation of radiotherapy chair, so that it may realize fixed particle beam from multiple angular illumination patient cancers Position.Before this radiotherapy, it (is exactly tumour to be treated to be accurately put into treatment position that pendulum position is carried out to patient Set) and position verifying.Generally, the verifying of position be using the spiral CT or conical beam CT (CBCT) in therapeutic room, Or orthogonal X-ray photographs to realize.If usually after this authentication, then to use manipulator with the spiral CT in therapeutic room Or it significantly goes up and down and patient is transported to treatment position.Or significantly elevating screws CT, drop it off treatment particle The position of the isocenter point of beam.This significantly, the movement of long range, it is ensured that pendulum position precision, be highly difficult. If photographed using CBCT or orthogonal X-ray, verified, is photographed due to the image of current CBCT or orthogonal X-ray Image can't clearly differentiate the boundary of soft tissue and tumour, and the verifying of pendulum position is that bone features or implantable marker object is leaned on to realize , since soft tissue and tumour opposite bone have movement caused by internal organs movement, so the pendulum position precision of tumour is limited.

Utility model content

The utility model aim is that in view of the drawbacks of the prior art, position can directly be carried out to tumour ontology by providing one kind Set verifying, can be also used for the variation of in-situ monitoring tumour in treatment course, can also realize it is in situ do radiotherapy planning and When big variation occurs for tumour, radiotherapy planning is integrated into the CT device in situ of fixed particle beams radiotherapy room again.

The utility model to achieve the above object, adopts the following technical scheme that

A kind of CT device in situ being integrated into fixed particle beams radiotherapy room, including it is fixed at the indoor radiotherapy of radiotherapy The radiotherapy chair rotated in the radiotherapy room is arranged in head, it is characterised in that: is additionally provided with CT device in the radiotherapy room；It is described The X-ray tube and CT detector of CT device, which are fixedly installed or are arranged in, rotates ring stand around the CT of radiotherapy chair rotary shaft rotation On；The isocenter point of the ray of the CT device is overlapped with the isocenter point of the radiotherapy head emergent beam.

It is further characterized by: the CT detector physical width is greater than 10cm.

Further: the CT detector is that 16-320 arranges detector.

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, for by 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 method: the CT detector is moved back and forth along human body longitudinal direction.

Another way: the X-ray tube is moved back and forth along human body longitudinal direction.

There are also a kind of modes: the CT rotation ring stand is up and down reciprocatingly translated along radiotherapy chair rotary axis direction.

There are also a kind of modes: the CT rotation ring stand is rotated around radiotherapy chair rotary shaft oneself.

The utility model by forming original position CT on integrated CT to the isocenter point for the treatment of, can to tumour ontology directly into Row location verification realizes high-precision tumour pendulum position.And the tumor image of spiral CT is clear, can be used for in-situ monitoring and is controlling Treat the variation of tumour in the course for the treatment of.It can also realize that original position is done radiotherapy planning and when big variation occurs for tumour, done again Radiotherapy planning.The utility model X-ray tube is specifically designed, so that the visual field along human body longitudinal direction is very wide, can turn one in radiotherapy chair Circle just covers most of tumours and human organ.

Detailed description of the invention

Fig. 1 is 1 top view cross section structural schematic diagram of the present embodiment.

Fig. 2 is 1 side elevational cross-section structural schematic diagram of the present embodiment.

Fig. 3 is 2 top view cross section structural schematic diagram of the present embodiment.

Fig. 4 is 2 side elevational cross-section structural schematic diagram of the present embodiment.

Fig. 5 is 3 top view cross section structural schematic diagram of the present embodiment.

Fig. 6 is 3 side elevational cross-section structural schematic diagram of the present embodiment.

Wherein: the direction of rotation 1-；2- radiotherapy head；3- outgoing treatment beam；4- isocenter point；5-X ray tube；6-X is penetrated Line；7-CT detector；8-CT detector collimator plate；9- human body；10- radiotherapy chair；11- anode；12- cathode；13- electron beam； 14- electromagnetic control apparatus；15-X tube envelope；16- cooler；17- coolant pipe；18-CT rotates ring stand.

Specific embodiment

Embodiment 1:

As shown in Figure 1, 2, a kind of CT device in situ being integrated into fixed particle beams radiotherapy room, including it is fixed at radiotherapy The radiotherapy chair 10 rotated in radiotherapy room according to direction of rotation 1 is arranged in indoor radiotherapy head 2.CT dress is additionally provided in radiotherapy room It sets；CT device includes X-ray tube 5 and CT detector 7；CT detector 7 is that 16-320 arranges detector, is provided with CT detector Collimator plate 8.X-ray tube 5 and CT detector 7 are separately positioned on opposite two sides, and the X that 5 anode of X-ray tube, 11 focus issues is penetrated Line 6 is received by CT detector 7.The equal centers of the isocenter point 4 of the X-ray 6 of CT device and the outgoing treatment beam 3 of radiotherapy head 2 Point 4 is overlapped.Utilize the rotation of radiotherapy chair 10, so that it may realize the in-situ scanning of CT.

If selecting 16 row's detectors, radiotherapy chair 10 turns around or half-turn, so that it may reconstruct the CT image of 16 rows.Only not It crosses, along human body 9 longitudinal visual field width of this image in 4 position of isocenter point only has 16 rows so wide, about 0.8- 1.2cm.This does not show most of big tumours enough.If CT detector 7 is increased to 256 to 320 rows, wide-angle is formed Fladellum, the in this way visual field width longitudinal along human body 9 in 4 position of isocenter point can be extended to more than 16cm.? It reconstructs along the longitudinal CT image for being greater than 16cm of human body 9, most of big tumours and organ can be covered.But 256 rows or more Plurality of rows of CT detector is very expensive.

Embodiment 2:

As shown in Figure 3,4, a kind of CT in situ dress for being integrated into fixed particle beams radiotherapy room improved on that basis of example 1 It sets, including is fixed at the indoor radiotherapy head 2 of radiotherapy, the radiotherapy chair 10 rotated in radiotherapy room according to direction of rotation 1 is set. CT device is additionally provided in radiotherapy room, CT device includes X-ray tube 5 and CT detector 7；X-ray tube 5 and CT detector 7 are distinguished Opposite two sides are set.CT detector 7 is that 16-320 arranges detector, is provided with CT detector collimator plate 8.CT device Isocenter point 4 and the radiotherapy head 2 of X-ray 6 be emitted the isocenter point 4 for the treatment of beam 3 and be overlapped.X-ray tube 5 includes cathode 12, anode 11；Anode 11 is strip, arc or polygon along 9 longitudinal direction of human body；It is provided between cathode 12 and anode 11 Electromagnetic control apparatus 14, the electron beam 13 for emitting cathode 12 quickly focus on the difference of anode 11 by electromagnetic field control Position.

If selecting 16 row's detectors, principle is exactly that the focus-exposure on each anode 11 can cover 16 row CT detection Device 7, that is, the visual field width of 0.8-1.2cm.With the focus of X-ray tube 5 move longitudinally to along human body 9 it is next in anode On 11 position, new exposure can cover the visual field width of another 0.8-1.2cm of human body 9 again.By this method, 20 or more Multifocal position can extended field of view width to 16cm, most of tumours and organ can be covered.The movement of focus be by What electromagnetic control apparatus 14 controlled, it can accomplish that very fast reciprocating is mobile, that is, the winged coke being commonly called as in CT equipment.In this way, During radiotherapy chair 10 rotates at a slow speed, focus fast reciprocating is mobile, forms the multifocal exposure in different regulation of longitudinal angle, It realizes and expands visual field width.To realize that radiotherapy chair 10 turns around or half-turn, so that it may reconstruct and longitudinally increase view along human body 9 The CT image of field width degree.Anode 11 and X-ray tube housing 15 are connected to together, thus can be directly from the back side of anode 11 Cooling liquid is passed directly into out of cooler 16 by coolant pipe 17 to enter anode 11 and quickly cool down anode 11.At some Multiple intermittent exposure facilitates the heat dissipation of anode 11 on focal position.

Embodiment 3:

As shown in Figure 5,6, the another form of CT device in situ for being integrated into fixed particle beams radiotherapy room, including fixation are set Set the radiotherapy chair 10 and CT device for being arranged in the indoor radiotherapy head 2 of radiotherapy and rotating in radiotherapy room according to direction of rotation 1.CT dress It installs on the CT rotation ring stand 18 rotated around 10 rotary shaft of radiotherapy chair；CT detector 7 is that 16-320 arranges detector, is set thereon It is equipped with CT detector collimator plate 8.In the grade of isocenter point 4 and radiotherapy head 2 the outgoing treatment beam 3 of the X-ray 6 of CT device Heart point 4 is overlapped.CT device includes X-ray tube 5 and 16-320 row's CT detector 7；X-ray tube 5 and CT detector 7 are respectively set In the opposite two sides of CT rotation ring stand 18.CT rotates ring stand 18 and rotates around 10 rotary shaft of radiotherapy chair.Pass through CT detector 7 and phase Quick rotation of the X-ray tube 5 answered with CT rotation ring stand 18 together, CT rotation 18 rotary shaft 100 of ring stand pass through isocenter point 4, form the scanning of CT.Reconstruct the image of CT.

Basic principles, main features, and advantages of the present invention has been shown and described above.Current row The technical staff of industry is described in above embodiments and description it should be appreciated that the present utility model is not limited to the above embodiments Only the principles of the present invention, the utility model also has respectively on the premise of not departing from the spirit and scope of the utility model Kind changes and improvements, these changes and improvements are both fallen in the range of claimed invention.The requires of the utility model Protection scope defined by appended claims and its equivalent.

Claims (9)

1. a kind of CT device in situ for being integrated into fixed particle beams radiotherapy room, including it is fixed at the indoor radiotherapy head of radiotherapy, The radiotherapy chair rotated in the radiotherapy room is set, it is characterised in that: is additionally provided with CT device in the radiotherapy room；The CT dress The X-ray tube and CT detector set are fixed on CT rotation ring stand；The isocenter point of the X-ray of the CT device with it is described The isocenter point of radiotherapy head outgoing treatment beam is overlapped.

2. being integrated into the CT device in situ of fixed particle beams radiotherapy room as described in claim 1, it is characterised in that: the CT is visited It surveys device physical width and is greater than 10cm.

3. being integrated into the CT device in situ of fixed particle beams radiotherapy room as claimed in claim 2, it is characterised in that: the CT is visited Surveying device is that 16-320 arranges detector.

4. the CT device in situ as described in any one of claims 1-3 for being integrated into fixed particle beams radiotherapy room, it is characterised in that: The X-ray tube includes cathode, anode；The anode is strip, arc or polygon along human body longitudinal direction；The cathode It is provided with electromagnetic control apparatus between anode, is quickly focused for controlling the electron beam of the emission of cathode by electromagnetic field To the different location of anode.

5. being integrated into the CT device in situ of fixed particle beams radiotherapy room as claimed in claim 4, it is characterised in that: the anode Together with the cage connection of X-ray tube, the anode is directly cooling by liquid or liquid metal.

6. the CT device in situ as described in any one of claims 1-3 for being integrated into fixed particle beams radiotherapy room, it is characterised in that: The CT detector is moved back and forth along human body longitudinal direction.

7. the CT device in situ as described in any one of claims 1-3 for being integrated into fixed particle beams radiotherapy room, it is characterised in that: The X-ray tube is moved back and forth along human body longitudinal direction.

8. the CT device in situ as described in any one of claims 1-3 for being integrated into fixed particle beams radiotherapy room, it is characterised in that: The CT rotation ring stand is up and down reciprocatingly translated along radiotherapy chair rotary axis direction.

9. the CT device in situ as described in any one of claims 1-3 for being integrated into fixed particle beams radiotherapy room, it is characterised in that: The CT rotation ring stand is rotated around radiotherapy chair rotary shaft oneself.