CN116421896A

CN116421896A - CT imaging and image guided radiotherapy device

Info

Publication number: CN116421896A
Application number: CN202210001491.6A
Authority: CN
Inventors: 赵旭明; 卢崇念
Original assignee: SHENZHEN HYPER TECHNOLOGY INCORPOREATION
Current assignee: SHENZHEN HYPER TECHNOLOGY INCORPOREATION
Priority date: 2022-01-04
Filing date: 2022-01-04
Publication date: 2023-07-14

Abstract

The invention relates to the technical field of radiation medical equipment, in particular to a CT imaging and image guiding radiation therapy device which comprises a fixed seat, a positioning assembly connected with a therapy bed, a revolving body arranged on the fixed seat, a source assembly and an image guiding assembly. Not only can accurate positioning be achieved, but also the focus center of a patient, the focusing point of a radioactive source and the focusing center of X-ray imaging are overlapped at one point; the treatment condition of the treatment position can be timely found by real-time imaging during treatment, when the deviation of the treatment position occurs, the treatment plan of the radiotherapy is adjusted in real time according to the treatment condition, and the treatment plan can be confirmed without using other imaging equipment, and the treatment condition can be confirmed by the CT imaging and image-guided radiotherapy device; the total time in the treatment process is greatly shortened, meanwhile, the imaging effect of the device is good, accurate and effective data and images can be provided for diagnosis, and the use efficiency of radiotherapy equipment and the efficiency of the treatment process are improved.

Description

CT imaging and image guided radiotherapy device

Technical Field

The invention relates to the technical field of radiation medical equipment, in particular to a CT imaging and image guiding radiation therapy device.

Background

Radiation therapy is an important tumor treatment means, and the era of accurate radiation therapy is entered at present. The greatest advantages of accurate radiotherapy are represented by accurate tumor hitting and slight damage to normal tissues, but the aim is achieved by accurately finding out tumors, accurately positioning the tumors, finely controlling the tumor mobility and the like, and the preconditions are achieved by an image guiding technology.

At present, a plurality of different image guiding technologies are clinically adopted, the variety is various, each image guiding technology has advantages and disadvantages, imaging principles, technical parameters and application environments of the various image guiding technologies are thoroughly known, and the method has great significance for a clinician to correctly select an appropriate image guiding mode and furthest improve the accurate radiotherapy effect. On the one hand, the treatment process of the existing radiotherapy technology is longer. Because in the prior art multiple positions are required, the patient needs to be moved to another location or imaging department for imaging confirmation. The patient is positioned by using other imaging equipment, the focus position of the patient is predetermined and marked, the focus of the patient is imaged by using imaging equipment at other positions or departments, the focus position is marked and fixed, the patient is kept on the positioning bed by using special materials for the positioning bed, and the distance between the focus position and the reference center is determined according to calculation of the reference center on the bed. The positioning bed with the patient fixed is transported to a treatment positioning device of the radiotherapy equipment through a mobile instrument, and then is automatically positioned through the radiotherapy equipment according to a positioning bed reference center to implement treatment. If there is a deviation in placement, the actual dose acquired by the lesion will vary from the prescribed dose in the radiation treatment plan, potentially resulting in a second or even multiple treatments to achieve the desired dose and treatment effect for the intended treatment plan. The longer treatment process can indirectly cause the radiation dose received by the non-treatment site of the patient to be relatively large, thereby bringing about adverse effects. Maintaining a posture for a long period of time can affect the mood of the patient and cause the patient to adjust the posture to affect the location of his lesions in the positioning bed.

The prior patent number CNCN200510036681.8 discloses a radiotherapy radiation device for gamma ray rotary focusing. The radiation source comprises a rotary ring and a source body and a detector, wherein a plurality of radiation sources are arranged in the source body, beams emitted by the radiation sources are focused on a common focus on the axis of the rotary ring, one ends of the source body and the detector are respectively connected to the rotary ring and are oppositely arranged along the radial direction of the rotary ring, a high-activity therapeutic radiation source and a low-activity diagnostic radiation source are arranged in the source body, the beams of the radiation sources penetrate through the axis of the rotary ring and are injected into the detector which is oppositely arranged with the source body, and after the detector receives radiation information, the detector responds and outputs detection information. But it cannot be positioned and focal positions confirmed before radiation treatment and its imaging definition is poor.

Disclosure of Invention

The invention provides a CT imaging and image-guided radiotherapy device with better imaging effect and clear imaging, which aims to solve the defects and shortcomings of the prior art.

In order to achieve the above purpose, the technical scheme adopted by the invention is that the CT imaging and image guided radiotherapy device comprises a fixed seat, a revolving body arranged on the fixed seat, a source component and an image guided component, wherein the source component comprises a source body and a collimator body, a plurality of radioactive sources are arranged in the source body, collimators corresponding to the radioactive sources are arranged in the collimator body, the radioactive sources are focused on radiation focuses on the rotation central axes of the revolving body through the collimators, the image guided component comprises a plurality of groups of flat panel detectors and a plurality of groups of X-ray spherical tubes, each group of flat panel detectors and each group of X-ray spherical tubes are respectively arranged on the fixed seat in an opposite mode, the CT imaging and image guided radiotherapy device further comprises a positioning component connected with a treatment bed, and the positioning device realizes positioning in an X direction, a Y direction and a Z direction through a moving component so that projection centers of focus centers of a patient and projection centers of strand X-ray cone intersections generated between each group of X-ray spherical tubes and the flat panel detectors and three-beam focusing points of the radioactive sources are integrated.

Further; the movable assembly comprises a Y-direction sliding seat, a Z-direction threaded sleeve, a Z-direction threaded rod and an X-direction sliding seat, wherein the Y-direction sliding seat is arranged at two ends of the positioning device, one end of the Z-direction threaded rod is connected with the Y-direction sliding seat, the other end of the Z-direction threaded rod is connected with the X-direction sliding seat, the Z-direction threaded sleeve is sleeved on the Z-direction threaded rod, and the X-direction sliding seat is fixed on the ground.

Further; the Z-direction screw rod, the Z-direction screw sleeve, the Y-direction slide seat and the positioning device are all in the X-direction slide seat and move along the X-direction to realize X-direction positioning, the Z-direction screw sleeve is connected with the Z-direction screw rod through threads, so that the Z-direction screw sleeve, the Y-direction slide seat and the positioning device are all in Z-direction lifting through threaded transmission, the Y-direction slide seat is fixed on the Z-direction screw sleeve, and the positioning device slides on the Y-direction slide seat along the X-direction slide seat to realize X-direction movement, so that the focus center of a patient aligns a radiation focus through the X-direction, Y-direction and Z-direction positioning.

Further; the revolving body comprises a collimation body rotating mechanism, and the collimation body rotating mechanism is connected with a motor in a driving way, so that the collimation body rotating mechanism rotates clockwise or anticlockwise around a rotation central axis of the revolving body.

Further; the rotary body further comprises a source body rotating mechanism, and the source body rotating mechanism is connected with a motor in a driving mode, so that the source body rotating mechanism rotates clockwise or anticlockwise around a rotating central axis of the rotary body.

Further; the source body is arranged on the source body rotating mechanism, the collimating body is arranged on the collimating body rotating mechanism, and when the motor drives the source body rotating mechanism and the collimating body rotating mechanism to rotate relatively, a radiotherapy position and a shielding position are formed.

Further; the radiotherapy position is that after the collimation body and the source body circularly move to a set angle through the collimation body rotating mechanism and the source body rotating mechanism, a radiation source wire harness in the source body passes through the collimator to carry out radiotherapy.

Further; the shielding position is that after the collimating body and the source body mechanism circularly move to a set angle through the collimating body rotating mechanism and the source body rotating mechanism, a radiation source wire harness in the source body is shielded by a shielding layer in the collimating body mechanism.

Further; the assembling contact surface of the collimation body and the source body is a spherical surface, an arc surface or a plane.

Further; the image guidance assembly further includes a data processing system coupled to the flat panel detector and providing a related image based on information from the detector.

The invention has the beneficial effects that:

the invention provides a CT imaging and image guiding radiotherapy device, wherein a positioning device realizes X-direction, Y-direction and Z-direction positioning through a moving assembly, so that the center of a focus of a patient is integrated with the projection center of the intersection of a strand X-ray cone beam generated between each group of X-ray tube and a flat panel detector and the focusing point of a radioactive source; not only can accurate positioning be achieved, but also the focus center of a patient, the focusing point of a radioactive source and the focusing center of X-ray imaging are overlapped at one point; the treatment condition of the treatment position can be timely found by real-time imaging during treatment, when the deviation of the treatment position occurs, the treatment plan of the radiotherapy is adjusted in real time according to the treatment condition, and the treatment plan can be confirmed without using other imaging equipment, and the treatment condition can be confirmed by the CT imaging and image-guided radiotherapy device; the total time in the treatment process is greatly shortened, meanwhile, the imaging effect of the device is good, accurate and effective data and images can be provided for diagnosis, and the use efficiency of radiotherapy equipment and the efficiency of the treatment process are improved.

Drawings

FIG. 1 is a schematic view of a CT imaging and image-guided radiation therapy device of the present invention;

FIG. 2 is a cross-sectional view of a source assembly of a CT imaging and image-guided radiation therapy device of the present invention;

FIG. 3 is a schematic view of the structure of a source assembly in a CT imaging and image-guided radiation therapy device of the present invention;

FIG. 4 is a schematic view of the structure of an X-ray imaging in a CT imaging and image-guided radiation therapy apparatus of the present invention;

FIG. 5 is a cross-sectional view of an X-ray imaging of a CT imaging and image-guided radiation therapy device of the present invention;

FIG. 6 is a schematic view of the structure of a CT imaging and image-guided radiation therapy device for radiation therapy according to the present invention;

FIG. 7 is a cross-sectional view of a CT imaging and image-guided radiation therapy device of the present invention during radiation therapy;

fig. 8 is a schematic view of a positioning assembly of a CT imaging and image guided radiation therapy device according to the present invention.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present invention are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

Furthermore, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.

The invention provides a CT imaging and image-guided radiotherapy device.

In the embodiment of the present invention, as shown in fig. 1 to 8, the CT imaging and image guided radiotherapy apparatus includes a fixing base 160, a rotation body 170 disposed on the fixing base 160, a source assembly 100 and an image guiding assembly 400, the source assembly 100 includes a source body 120 and a collimator body 110, a plurality of radiation sources 4 are disposed in the source body 120, a collimator 5 corresponding to the radiation sources 4 is disposed in the collimator body 110, the radiation sources 4 are focused on a radiation focus 1 on a rotation central axis 2 of the rotation body 170 through the collimator 5, the image guiding assembly 400 includes a plurality of sets of flat panel detectors 410 and a plurality of sets of X-ray tubes 420, each set of flat panel detectors 410 and each set of X-ray tubes 420 are disposed opposite to each other on two sides of the fixing base 160, respectively, the CT imaging and image guided radiotherapy apparatus further includes a positioning assembly 150 connected to a treatment table, and the positioning assembly 150 realizes X-direction, Y-direction and Z-direction positioning by moving the assembly such that a focus center of a focus of a patient 3 and a projection center 470 of a strand of X-ray cone beam generated between each set of X-ray tubes 420 and each set of flat panel detectors 410 and a focus 4 are integrated with the focus point of the radiation focus 4. The source assembly 100 provides a radiation dose at the lesion that can be adjusted in real time for X-rays required for radiation therapy; the auxiliary function provided by the image guiding assembly 400 is to judge the position of the tumor position in real time and assist the patient 3 to be positioned, and meanwhile, the radiation treatment effect at the pathological position is judged and monitored through the X-ray acquired by the image guiding assembly 400 in treatment, so that the image data of auxiliary treatment is provided for an operator, and the supply of radiation dose is controlled in real time.

The focus center of a patient is quickly and accurately aligned to the focusing point of a radioactive source through the X-ray real-time imaging guiding and automatic positioning; monitoring the treatment condition through X-ray real-time imaging, evaluating and confirming the implementation effect of the treatment plan of the radiotherapy, and providing real-time information support for the final treatment plan or adjustment of the treatment plan; the focus position of the patient 3 can be marked without using other imaging equipment, special positioning beds and other devices, and the treatment effect can be evaluated without using other imaging equipment, so that the invention simplifies a plurality of treatment processes which are necessary for lacking image guidance, and greatly shortens the total time of the radiotherapy of each patient 3; can provide image monitoring, realize real-time monitoring and verification of treatment dosage, ensure that radiotherapy is faster and more accurate, and improve the use efficiency of radiotherapy equipment and the efficiency of treatment process.

The fixing base 160 further comprises a fixing base supporting and connecting structure 140, the fixing base supporting and connecting structure is fixed on the ground through bolting and concrete grouting, X-rays generated by the X-ray tube 420 irradiate suspicious focus tissues and peripheral tissues of a patient 3 and are then received by the flat panel detector 410, and then an X-ray projection image is acquired through an algorithm provided by a controller host computer, so that a CT image can be uploaded, a DRR projection image can be registered for positioning the patient. The source body 120 comprises a source box and an auxiliary mechanism, wherein the source box is internally provided with a plurality of radioactive sources 4, the outlet points of the radioactive sources 4 are arranged at spherical positions, on one hand, the central axis of each radioactive source 4 is focused to a set radiation focus point 1, and the radiation focus point 1 is positioned on the rotation central axis 2 of the revolving body 170; on the other hand, each radiation source 4 has almost the same dose of the radiation focus point 1 in the same time, which facilitates the adjustment and control of the dose. The collimating body 110 can be collimating bodies 110 of different types, and the collimating bodies 110 of different types can be designed into a plurality of collimating bodies 110 of different specifications according to clinical requirements. The collimator body 110 has a positioning guide, focusing function, and shielding function for the radiation beam in other directions than the direction of the treatment beam during radiation treatment. When the radiation therapy is not performed, the shielding effect is required. During shielding, not only the sealed radiation beam is blocked, but also special heavy metal material lead and the like are used for shielding and isolation. By moving the positioning device the focus center of the patient 3 coincides with the radiation focus point 1. Imaging can be carried out once before the accurate positioning of the patient 3, and the focus position is preliminarily determined; then, according to the X-ray cone beam 470 emitted by the X-ray tube 420, the distance that the positioning device needs to move in the X-direction, the Y-direction and the Z-direction is calculated according to the imaging data received by the flat panel detector 410; after the patient 3 is in place, the lesion and its location can be confirmed again by imaging. The center of projection at the intersection of the X-ray cone beam 470 and the focus center of radiation treatment are achieved by mechanical mounting, without real-time adjustment during treatment, reducing the cumulative error of adjustment. During treatment, only the patient 3 is required to be positioned, so that the focus center of the patient 3 coincides with the radiation focus 1, and then radiation treatment is performed. The treatment position of the patient 3 is kept motionless, the imaging can be performed in real time, and the imaging can be performed before the re-treatment and after the nuclear treatment. The location of the treatment site and the effect of the treatment and the dosage of the treatment site are confirmed.

The positioning device 150 realizes X-direction, Y-direction and Z-direction positioning through a moving assembly, wherein the moving assembly comprises a Y-direction sliding seat 151, a Z-direction screw sleeve 152, a Z-direction screw 153 and an X-direction sliding seat 154, two ends of the positioning device 150 are provided with the Y-direction sliding seat 151, one end of the Z-direction screw 153 is connected with the Y-direction sliding seat 151, the other end of the Z-direction screw sleeve 152 is connected with the X-direction sliding seat 154 in a sleeved mode, the X-direction sliding seat 154 is fixed on the ground, and the Z-direction screw 153, the Z-direction screw sleeve 152, the Y-direction sliding seat 151 and the positioning device 150 move together on the X-direction sliding seat 154 along the X-direction to realize X-direction positioning; the Z-direction screw sleeve 152 is connected with the Z-direction screw rod 153 through threads, so that the Z-direction screw sleeve 152, the Y-direction sliding seat 151 and the positioning device 150 realize Z-direction lifting together through thread transmission; the Y-direction slide 151 is fixed on the Z-direction screw sleeve 152, and the positioning device 150 can slide on the Y-direction slide 151 along the X-direction slide 154 to realize the movement in the X-direction. Thus, by integrated positioning in the X-direction, Y-direction and Z-direction, the focus center of the patient 3 is aligned with the radiation focus point 1.

In the present embodiment, the rotator 170 includes the collimator body rotating mechanism 171, and the collimator body rotating mechanism 171 is rotated clockwise or counterclockwise about the rotation center axis 2 of the rotator 170 by being in driving connection with a motor.

In the present embodiment, the rotator 170 further includes a source rotation mechanism 172, and the source rotation mechanism 172 is driven by being connected to a motor such that the source rotation mechanism 172 rotates clockwise or counterclockwise around the rotation center axis 2 of the rotator 170.

In the present embodiment, the source 120 is disposed on the source rotation mechanism 172, the collimator body 110 is disposed on the collimator body rotation mechanism 171, and the radiotherapy position and the shielding position are formed when the motor drives the source rotation mechanism 172 and the collimator body rotation mechanism 171 to rotate relatively.

In this embodiment, the radiotherapy level is that after the collimator body 110 and the source body 120 are moved to a set angle by the collimator body rotating mechanism 171 and the source body rotating mechanism 172, the beam of the radiation source 4 in the source body 120 passes through the collimator 5 to perform radiotherapy. In radiation therapy, patient 3 focal site must remain stationary; the radiation source 4 is directed to transmit an X-ray beam via a predetermined collimator 110. The X-ray beam moves circumferentially with the rotor 170 about the central axis of rotation at a set angle in accordance with the treatment plan. The rotation can be in a clockwise direction as shown in fig. 4 or in a counterclockwise direction to perform circular motion. In the case of radiotherapy, when it is necessary to confirm the dose of the radiotherapy and the effect of the radiotherapy, the collimator body 110 and the source body 120 may be rotated to stay at one side of the position shown in fig. 4 or the symmetrical position thereof to perform X-ray imaging.

In this embodiment, the shielding level is that the collimator body 110 and the source body 120 are moved to a set angle by the collimator body rotating mechanism 171 and the source body rotating mechanism 172, so that the beam of the radiation source 4 in the source body 120 is shielded by the shielding layer containing lead layer in the collimator body 110. The beam of the radioactive source 4 in the source body 120 is shielded by a shielding layer containing lead layer with a certain thickness in the collimating body 110, so that the leakage of the radioactive dose is eliminated or reduced to the maximum extent; the shield site is a non-radiation therapy state.

In this embodiment, the assembling contact surface of the collimating body 110 and the source body 120 is a spherical surface, an arc surface or a plane surface.

In this embodiment, the image guidance assembly 400 further includes a data processing system coupled to the flat panel detector 410 and providing a related image based on information transmitted from the flat panel detector 410. The data processing system comprises an exposure controller 450, a high voltage generator 430, an isolation transformer 440 and a controller host 460, wherein the exposure controller 450 is used for switching on or off the high voltage generator 430 and the isolation transformer 440, controlling the working parameters and time of the high voltage generator 430 and the isolation transformer 440, the high voltage generator 430 is used for providing direct current high voltage for two poles of the X-ray tube 420, and the isolation transformer 440 is used for providing heating current for filaments of the X-ray tube 420 to complete switching of tube voltage and filament heating current among different loads, so that the X-ray tube 420 generates X-rays.

Specifically, the source assembly 100 further includes a counterweight shield 130, where the counterweight shield 130 is fixed to the rotator 170, and the rotator 170 is provided with a bearing.

The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the description of the present invention and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the invention.

Claims

1. The utility model provides a CT formation of image and image guide radiotherapy device, includes fixing base (160), solid of revolution (170) of setting on fixing base (160), source subassembly (100) and image guide subassembly (400), source subassembly (100) include source body (120) and collimation body (110), be equipped with a plurality of radiation sources (4) in source body (120), be equipped with in collimation body (110) with corresponding collimator (5) of radiation source (4), radiation source (4) focus on through collimator (5) radiation focus (1) on rotation central axis (2) of solid of revolution (170), image guide subassembly (400) include multiunit flat panel detector (410) and multiunit X ray tube (420), every group flat panel detector (410) with every group X ray tube (420) respectively relative set up in on fixing base (160), its characterized in that: the CT imaging and image guided radiotherapy device further comprises a positioning assembly (150) connected with the treatment table, and the positioning assembly (150) realizes X-direction, Y-direction and Z-direction positioning through a moving assembly so that the center of a focus of the patient (3) is integrated with the projection center of a strand X-ray cone beam (470) generated between each group of X-ray tube (420) and the flat panel detector (410) and the focusing point of the radioactive source (4).

2. A CT imaging and image guided radiation therapy apparatus according to claim 1, wherein: the movable assembly comprises a Y-direction sliding seat (151), a Z-direction threaded sleeve (152), a Z-direction threaded rod (153) and an X-direction sliding seat (154), wherein the Y-direction sliding seat (151) is arranged at two ends of the positioning device (150), one end of the Z-direction threaded rod (153) is connected with the Y-direction sliding seat (151) while the other end is connected with the X-direction sliding seat (154), the Z-direction threaded sleeve (152) is sleeved on the Z-direction threaded rod (153), and the X-direction sliding seat (154) is fixed on the ground.

3. The CT imaging and image guided radiation therapy apparatus of claim 2, wherein: z is to screw rod (153), Z is to swivel nut (152) Y is to slide (151) with position device (150) all be in X is to slide (154) on along X is to the removal realize X to the location, Z is to swivel nut (152) through the screw thread with Z is to screw rod (153) be connected, make Z is to screw rod (152), Y is to slide (151) with position device (150) all realize Z through the screw thread transmission and go up and down, Y is to slide (151) and is fixed on Z is to screw rod (152), position device (150) is in Y is to slide along X is to slide (154) on slide (151) and realize X to remove to through the location of X, Y is to and Z is to make patient (3) focus center alignment radiation focus (1).

4. The CT imaging and image guided radiation therapy apparatus of claim 1, wherein: the revolving body (170) comprises a collimation body rotating mechanism (171), and the collimation body rotating mechanism (171) is connected with a motor in a driving way, so that the collimation body rotating mechanism (171) rotates clockwise or anticlockwise around a rotation central axis (2) of the revolving body (170).

5. The CT imaging and image guided radiation therapy apparatus of claim 1, wherein: the rotator (170) further comprises a source rotating mechanism (172), and the source rotating mechanism (172) is in driving connection with a motor, so that the source rotating mechanism (172) rotates clockwise or anticlockwise around a rotation central axis (2) of the rotator (170).

6. The CT imaging and image guided radiation therapy apparatus of claim 5, wherein: the source body (120) is arranged on the source body rotating mechanism (172), the collimating body (110) is arranged on the collimating body rotating mechanism (171), and when the motor drives the source body rotating mechanism (172) and the collimating body rotating mechanism (171) to rotate relatively, a radiotherapy position and a shielding position are formed.

7. The CT imaging and image guided radiation therapy apparatus of claim 6, wherein: the radiotherapy position is that after the collimation body (110) and the source body (120) circularly move to a set angle through the collimation body rotating mechanism (171) and the source body rotating mechanism (172), a radiation source (4) wire harness in the source body (120) passes through the collimator (5) to carry out radiotherapy.

8. The CT imaging and image guided radiation therapy apparatus of claim 6, wherein: the shielding position is that after the collimating body (110) and the source body (120) move to a set angle through the collimating body rotating mechanism (171) and the source body rotating mechanism (172), the wire harness of the radiation source (4) in the source body (120) is shielded by the shielding layer in the collimating body (110).

9. The CT imaging and image guided radiation therapy apparatus of claim 8, wherein: the assembling contact surface of the collimating body (110) and the source body (120) is a spherical surface, an arc surface or a plane.

10. The CT imaging and image guided radiation therapy apparatus of claim 1, wherein: the image guidance assembly (400) further includes a data processing system coupled to the flat panel detector (410) and providing a related image based on detector outgoing information.