CN107049356B - Early warning device for separation of scanning hole protective membrane, medical imaging equipment and early warning method - Google Patents
Early warning device for separation of scanning hole protective membrane, medical imaging equipment and early warning method Download PDFInfo
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- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
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Abstract
The application provides a scanning hole protective membrane separation early warning device, medical imaging equipment and an early warning control method, wherein the scanning hole protective membrane separation early warning device comprises a rack, an outer cover, a scanning hole protective membrane, at least one sensor and a fixed main control board, and the scanning hole protective membrane is attached to the outer cover; the sensor is arranged on the outer cover and used for detecting real-time state parameters of the scanning hole protective membrane; the fixed main control board is arranged on the rack, a main control circuit is arranged on the fixed main control board, and the sensor is electrically connected with the main control circuit; the main control circuit is used for controlling the running state of the rotating system according to the state parameters detected by the sensors. This application has realized breaking away from the detection of the dustcoat condition to scanning hole protection diaphragm accident, reports to the police and control rotating system through the main control circuit suggestion and stop rotatory to avoid the patient to stretch out the hand and get into the machine and electrocute or be caused bodily injury by the rotator scratch, and because of the incorrect problem that influences the scanning effect in scanning hole protection diaphragm position.
Description
Technical Field
The application relates to the field of medical equipment, in particular to a scanning hole protective membrane separation early warning device, medical imaging equipment and an early warning method.
Background
Most medical imaging equipment, such as CT products, are provided with a part, namely a scanning hole protective membrane, which is made of a special material on a scanning hole of the medical imaging equipment, so that rays can pass through the scanning hole protective membrane at a low attenuation rate, and foreign matters such as liquid and the like, even a patient can be prevented from extending into the machine to influence the normal operation of the machine or cause safety accidents.
For the convenience of disassembly and assembly, the scanning hole protection membrane is tightly pressed on the host computer outer cover through elasticity, or is attached to the host computer outer cover or inserted into the slot and fixed on the host computer outer cover through screws. The patient is informed not to touch the part during normal use, but occasionally the patient can pull the protective film off when curiosity or consciousness is unconscious in practical use in a hospital, and at the moment, if no doctor finds the situation in time, the patient possibly gets the hand into a machine to be shocked or is scratched by a rotating body, so that personal injury is caused. In addition, the incorrect position of the protective membrane of the scanning hole can also affect the acquired data value and the image result, so that the scanning is invalid.
In order to avoid the situation that the protective membrane is pulled off by mistake, most of the current products only explicitly indicate the attention items of doctors to patients before scanning in an operation manual, and when the problems occur, the machine does not have substantial countermeasures, does not give an alarm and does not intervene. Although some scanning hole protective membrane structures can play a certain role in stopping, if some scanning hole protective membrane structures are directly integrated with the outer cover, the protective membrane structures cannot be detached; some additional fixing points fix the scanning hole protective films on the front cover and the rear cover in an intensive manner, so that the scanning hole protective films cannot be taken down easily. Therefore, the above schemes all have insurmountable disadvantages, such as the former increases the manufacturing difficulty of the host machine outer cover and is not easy to ensure the assembly precision, and the latter is inconvenient to assemble and disassemble the protective membrane, thus affecting the appearance aesthetic property.
Disclosure of Invention
In view of this, the present application provides a scanning hole protective film detachment warning device, a medical imaging apparatus and a warning method.
Specifically, the method is realized through the following technical scheme:
according to a first aspect of the embodiment of the invention, the invention provides a scanning hole protective membrane early warning mechanism which comprises a rack and an outer cover arranged on the rack, wherein a scanning hole for a human body to pass through is formed in the center of the outer cover, a rotating system is accommodated in the outer cover, the scanning hole protective membrane, at least one sensor and a fixed main control board are further included, the scanning hole protective membrane is connected with the outer cover in an attaching mode, and the scanning hole protective membrane covers an area through which rays pass; the sensor is arranged on the outer cover and used for detecting real-time state parameters of the scanning hole protective membrane; the fixed main control board is arranged on the rack, a main control circuit is arranged on the fixed main control board, and the sensor is electrically connected with the main control circuit; the main control circuit is electrically connected with the rotating system and used for controlling the running state of the rotating system according to the state parameters of the scanning hole protection membrane detected by the sensor.
Preferably, when the number of the sensors is more than one, the sensors are uniformly distributed in the circumference.
Preferably, the sensor is a pressure sensor, a contact of the sensor is in contact connection with the scanning hole protection membrane, and the real-time state parameter of the scanning hole protection membrane detected by the sensor is a pressure value between the scanning hole protection membrane and the outer cover.
Further, the sensor is located on the inner wall of the housing, and the contact of the sensor extends out of the outer surface of the housing.
Preferably, the sensor is a displacement sensor, and the real-time state parameter of the scanning hole protection membrane detected by the sensor is a distance value between the scanning hole protection membrane and a designated position on the rotating system.
Further, the sensor is mounted on the rotating system, the sensor having a detection head directed at the scanning aperture protection diaphragm.
According to a second aspect of the embodiments of the present invention, the present invention provides a medical imaging apparatus, which includes a main console computer and the above-mentioned scanning hole protection film detachment early warning device, wherein the main control circuit on the fixed main control board is electrically connected to the main console computer respectively.
According to a third aspect of the embodiments of the present invention, the present invention provides an early warning method based on the above-mentioned scanning hole protective membrane detachment early warning device, including the following steps:
the main control circuit receives detection data of the sensor;
the main control circuit judges whether the protective membrane of the scanning hole is separated from the outer cover or not according to the detection data of the sensor;
if the protective membrane of the scanning hole is separated from the outer cover, the main control circuit sends an abnormal working instruction to prompt and warn, and the rotating system stops running.
Preferably, when the sensor is a pressure sensor, the step of judging whether the scanning hole protective membrane is separated from the outer cover specifically comprises:
when the pressure value detected by the pressure sensor is 0, judging that the scanning hole protective membrane is separated from the outer cover;
and when the pressure value detected by the pressure sensor is greater than 0, judging that the scanning hole protective membrane is not separated from the outer cover.
Furthermore, if the scanning hole protection diaphragm is not separated from the outer cover, when the pressure value of the pressure sensor is within the range of the set value, the scanning hole protection diaphragm is judged to be in a normal state, the main control circuit sends out a normal working instruction, and the rotating system operates normally.
Preferably, when the sensor is a displacement sensor, the step of judging whether the scanning hole protective membrane is separated from the outer cover specifically comprises:
when the distance value detected by the displacement sensor is larger than a set value, judging that the scanning hole protective membrane is separated from the outer cover;
and when the distance value detected by the displacement sensor is smaller than or equal to the set value, judging that the scanning hole protective membrane is not separated from the outer cover.
Furthermore, if the scanning hole protection film is not separated from the outer cover, the scanning hole protection film is judged to be in a normal state, the main control circuit sends out a normal working instruction, and the rotating system operates normally.
This application has realized breaking away from the detection of the dustcoat condition to scanning hole protection diaphragm accident, reports to the police and control rotating system through the main control circuit suggestion and stop rotatory to avoid the patient to stretch out the hand and get into the machine and electrocute or be caused bodily injury by the rotator scratch, and because of the incorrect problem that influences the scanning effect in scanning hole protection diaphragm position.
Drawings
FIG. 1 is a schematic structural diagram of a scanning hole protective membrane detachment early warning device according to the present application;
FIG. 2 is a schematic view of a partial structure of a scanning hole protective membrane detachment early warning device of the present application when a sensor is a pressure sensor;
FIG. 3 is a schematic view of a partial structure of a displacement sensor of the scanning hole protection diaphragm detachment early warning device according to the present application;
fig. 4 is a flowchart of an early warning control method for preventing the scanning hole protective membrane from being separated from the early warning device.
In the figure, 1-front cover, 2-scanning hole protective membrane, 3-sensor, 4-rear cover, 5-transmitter, 6-frame, 7-fixed main control board, 8-cable, 9-rotating system, 10-probe, 11-scanning hole.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It will be understood that, although the terms first, second, third, etc. may be used herein to describe various structures, these structures should not be limited by these terms. These terms are only used to distinguish one type of structure from another. For example, a first structure may also be referred to as a second structure, and similarly, a second structure may also be referred to as a first structure, without departing from the scope of the present application. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.
The utility model provides a scanning hole protection diaphragm early warning mechanism, includes frame 6, installs dustcoat and scanning hole protection diaphragm 2, at least one sensor 3 and fixed main control board 7 in the frame 6, and the dustcoat center is equipped with the scanning hole 11 that supplies the human body to pass through, and inside ray device and the rotating system 9 of holding of dustcoat. The scanning hole protection membrane 2 is attached to the outer cover, for example, the scanning hole protection membrane 2 is tightly pressed on the outer surface of the outer cover through the elasticity of a stainless steel ring, and the scanning hole protection membrane 2 covers the area through which the rays pass; the sensor 3 is arranged on the outer cover, and the sensor 3 is used for detecting real-time state parameters of the scanning hole protective membrane 2, such as pressure, displacement and the like; the fixed main control board 7 is arranged on the frame 6, a main control circuit is arranged on the fixed main control board 7, and the sensor 3 is electrically connected with the main control circuit; the main control circuit is electrically connected with the rotating system 9 and is used for controlling the running state of the rotating system 9 according to the state parameter of the scanning hole protection membrane 2 detected by the sensor 3.
If the scanning hole protection membrane 2 is not separated from the outer cover and the detection data is normal, judging that the scanning hole protection membrane 2 is in a normal state, sending a normal working instruction by the main control circuit, and normally operating the rotating system 9; if the scanning hole protective membrane 2 is separated from the outer cover after detection, the main control circuit sends out an abnormal working instruction to prompt warning, and the rotating system 9 stops running. The prompt warning can be that the main control circuit is provided with a warning module, the warning module prompts warning in a sound, light or sound and light combined warning mode, and the like, or an electric signal can be transmitted to a main control console computer which is electrically connected, and the warning is prompted on a display interface of the main control console computer.
The scanning hole protective membrane early warning mechanism can be applied to medical imaging equipment such as CT, PET-CT and the like, realizes the detection of the condition that the scanning hole protective membrane 2 is accidentally separated from the outer cover, and can give an alarm and control the rotating system 9 to stop rotating when the scanning hole protective membrane 2 is separated, thereby avoiding the problems that a patient stretches his hand to enter a machine to get an electric shock or is scratched by a rotating body to cause personal injury and the scanning effect is influenced due to the incorrect position of the scanning hole protective membrane 2.
As an embodiment, a transmitter 5 is electrically connected between the sensor 3 and the main control circuit, and the transmitter 5 can be mounted on the frame 6. And the transmitter 5 is used for converting the physical data detected by the sensor 3 into an electric signal and transmitting the electric signal to the main control circuit. When the scanning hole protective membrane 2 is separated from the outer cover, the sensor 3 transmits a signal to the transmitter 5 by detecting corresponding data change, the transmitter 5 converts the signal to a main control circuit fixed on the main control board 7, a computer interface of a main control console displays warning or alarm prompt, and the main control circuit controls the rotating system 9 to stop rotating.
As shown in fig. 1, the scanning hole protective membrane early warning mechanism is applied to a CT machine, the outer cover comprises an annular front cover 1 and an annular rear cover 4, the annular middle part is a scanning hole, and the inner space of the outer cover contains a ray device and a rotating system 9 carrying the ray device; the outer cover is carried on the frame 6, and the transmitter 5 and the fixed main control board 7 are both arranged on one side of the frame 6; the scanning hole protective membrane 2 is respectively attached to the front cover 1 and the rear cover 4 and covers an area between the front cover 1 and the rear cover 4 through which rays pass; the sensor 3 is arranged on the inner walls of the front cover 1 and the rear cover 4, the sensor 3 is electrically connected with the transmitter 5 through a cable 8, and the transmitter 5 is electrically connected with a main control circuit on the fixed main control board 7 through a transmission line or a patch panel.
As an alternative embodiment, the sensor 3 may be a pressure sensor, and the contact of the sensor 3 is in pressure contact with the scanning-hole-protecting diaphragm 2. The sensor 3 is used for detecting the pressure value between the scanning hole protective membrane 2 and the outer cover to judge whether the scanning hole protective membrane is in a normal working state. The pressure sensor can be a miniature pressure sensor.
As shown in fig. 2, the sensor 3 may be located on an inner wall of the housing, such as an inner wall of one or both of the front housing 1, the rear housing 4, with the contacts of the sensor 3 protruding out of the outer surface of the housing. In particular, when there is more than one sensor 3, the sensors 3 on the inner wall of the front cover 1 or the inner wall of the rear cover 4 are uniformly distributed in the circumference. For example, one pressure sensor may be mounted at each of four positions of 0 point, 3 points, 6 points and 9 points on the inner wall circumference of the front cover 1 and the rear cover 4, and the pressure sensors mounted on the inner walls of the front cover 1 and the rear cover 4 in the same direction are symmetrically arranged for monitoring pressure changes of the front cover 1 and the rear cover 4 in each direction.
During normal operating condition, scanning hole protection diaphragm 2 compresses tightly on the dustcoat through elasticity, and the amount of spy out of 3 contacts of sensor is compressed, and if the amount of spy out of contact is only about 1mm, makes the contact and the surface of dustcoat level basically. At this time, the sensor 3 will receive the pressure from the scanning hole protection diaphragm 2, and detect and obtain the pressure value between the scanning hole protection diaphragm 2 and the outer cover. After the machine is powered on, the main control circuit receives the electric signal detected by the sensor 3 and transmitted by the transducer 5 in real time.
If the scanning aperture of a certain location protects the membrane 2 from being detached from the outer surface of the housing, for example, by more than 1mm, the pressure value detected by the sensor 3 near the location will be 0. When the pressure value detected by the pressure sensor is 0, the main control circuit judges that the scanning hole protective membrane 2 is separated from the outer cover, the main control circuit sends an abnormal working instruction to prompt warning, and the rotating system 9 stops running; when the pressure value detected by the pressure sensor is greater than 0, the main control circuit judges that the scanning hole protective membrane 2 is not separated from the outer cover; at this time, when the pressure value of the pressure sensor is within the range of the set value, the scanning hole protective membrane 2 is judged to be in a normal state, the main control circuit sends out a normal working instruction, and the rotating system 9 operates normally. The set value range of the pressure value may be set to 10 to 20N.
As another alternative, the sensor 3 may be a displacement sensor, and the sensor 3 is used for detecting a distance value between the scanning hole protection diaphragm 2 and a designated position on the rotating system 9 to determine whether the scanning hole protection diaphragm 2 is in a normal working state.
Specifically, as shown in fig. 3, the rotating system 9 is installed in an annular space inside the housing, the sensor 3 is installed on the rotating system 9, the sensor 3 has a detection head pointing to the scanning hole protection diaphragm 2, and a distance value between the scanning hole protection diaphragm 2 and a designated position on the rotating system 9 may be a distance value between the scanning hole protection diaphragm 2 and the detection head of the sensor 3.
The sensors 3 are arranged on the rotating system 9, and when more than one sensors 3 are arranged, the sensors 3 are uniformly distributed in the annular space in the outer cover. For example, a displacement sensor can be installed at each of four directions of 0 point, 3 point, 6 point and 9 point of the annular space in the housing, and is used for monitoring the displacement change of the scanning hole protection diaphragm 2 on the front housing 1 and the rear housing 4 in each direction.
When the device is in a normal working state, the scanning hole protective membrane 2 is tightly attached to the outer surface of the outer cover, the detection head of the displacement sensor and the inner surface of the scanning hole protective membrane 2 are adjusted within a designed distance value, the main control circuit receives an electric signal transmitted by the transmitter 5 and sends a normal working instruction to enable the rotating system 9 to enter a normal operation mode; if the scanning hole protective membrane 2 is separated from the outer surface of the outer cover, the displacement sensor detects that the distance between the detection head and the inner surface of the scanning hole protective membrane 2 is larger than a set value, and then the main control circuit receives a signal and sends an abnormal working instruction to prompt and warn, and the rotating system 9 stops running.
Wherein, the sensor 3 can be a laser displacement sensor, and detects the distance value between the scanning hole protective membrane 2 and the detection head through laser.
The application also provides medical imaging equipment, including the master control platform computer, as above scanning hole protection diaphragm break away from early warning device, master control circuit and master control platform computer electricity on the fixed master control board 7 are connected.
The medical imaging device may be a Positron Emission Tomography (PET), a Computed Tomography (CT), a positron emission tomography/computed tomography (PET/CT), or the like, having the above technical features.
If the scanning hole protection film 2 is not separated from the outer cover and the detection data is normal, judging that the scanning hole protection film 2 is in a normal state, sending a normal working instruction by the main control circuit, and normally operating the rotating system 9; if the scanning hole protective membrane 2 is separated from the outer cover after detection, the main control circuit sends out an abnormal working instruction to prompt warning, and the rotating system 9 stops running. The prompt warning can be that the main control circuit is provided with a warning module, the warning module prompts warning in a sound, light or sound and light combined warning mode, and the like, or an electric signal can be transmitted to a main control console computer which is electrically connected, and the warning is prompted on a display interface of the main control console computer.
In another aspect of the embodiment of the present invention, an early warning method based on the above-mentioned scanning hole protective membrane detachment early warning device is further provided, as shown in fig. 4, including the following steps:
102, judging whether the scanning hole protective membrane 2 is separated from the outer cover or not by a main control circuit according to detection data of the sensor 3;
and 103, if the scanning hole protective membrane 2 is separated from the outer cover, the main control circuit sends an abnormal working instruction to prompt an alarm, and the rotating system 9 stops running.
As an alternative embodiment, when the sensor 3 is a pressure sensor, the step of determining whether the scanning hole protection diaphragm 2 is separated from the housing is specifically:
when the pressure value detected by the pressure sensor is 0, judging that the scanning hole protective membrane 2 is separated from the outer cover;
when the pressure value detected by the pressure sensor is greater than 0, it is determined that the scanning hole protective membrane 2 is not detached from the housing.
If the scanning hole protection membrane 2 is not separated from the outer cover, when the pressure value of the pressure sensor is within the range of the set value, the scanning hole protection membrane 2 is judged to be in a normal state, the main control circuit sends out a normal working instruction, and the rotating system 9 operates normally.
As an optional implementation manner, when the sensor is a displacement sensor, the step of determining whether the scanning hole protective membrane is separated from the housing specifically includes:
when the distance value detected by the displacement sensor is larger than a set value, judging that the scanning hole protective membrane 2 is separated from the outer cover;
when the distance value detected by the displacement sensor is smaller than or equal to the set value, the scanning hole protective membrane 2 is judged not to be separated from the outer cover, the main control circuit sends out a normal working instruction, and the rotating system 9 operates normally.
The contents of the above method have already been described in the apparatus section, and will not be expanded herein.
This application has realized breaking away from the detection of the dustcoat condition to scanning hole protection diaphragm 2 accident to can report to the police and control rotation system 9 through the main control circuit suggestion and stop rotatory, thereby avoid the patient to stretch out the hand and get into the machine and electrocute or be caused bodily injury by the rotator scratch, and influence the problem of scanning effect because of scanning hole protection diaphragm 2 position is incorrect. Compared with the way of orally ordering patients by doctors, the method realizes the protection on the product structure, and is the most reliable and effective safety guarantee; meanwhile, the scanning hole protection membrane 2 keeps the characteristic that the scanning hole protection membrane is tightly pressed on the outer cover through elasticity, and the problems that the outer cover is difficult to manufacture and assemble, and the disassembly, assembly and appearance attractiveness are affected are solved.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the scope of protection of the present application.
Claims (10)
1. A scanning hole protective membrane separation early warning device is applied to medical imaging equipment and comprises a frame and an outer cover arranged on the frame, wherein the center of the outer cover is provided with a scanning hole for a human body to pass through, and a rotating system is accommodated in the outer cover,
the scanning hole protection film is attached to the outer cover and covers the area through which the rays pass;
the sensor is arranged on or in the outer cover and used for detecting real-time state parameters of the protective membrane of the scanning hole;
the fixed main control board is arranged on the rack, a main control circuit is arranged on the fixed main control board, and the sensor is electrically connected with the main control circuit;
the main control circuit is electrically connected with the rotating system and used for controlling the running state of the rotating system according to the state parameters of the scanning hole protection membrane detected by the sensor.
2. The scanning hole protective membrane detachment early warning device as claimed in claim 1, wherein when the number of the sensors is more than one, the sensors are uniformly distributed in the same circumference.
3. The scanning hole protection membrane separation early warning device as claimed in claim 1 or 2, wherein the sensor is a pressure sensor, a contact of the sensor is in contact connection with the scanning hole protection membrane, and the real-time state parameter of the scanning hole protection membrane detected by the sensor is a pressure value between the scanning hole protection membrane and the outer cover.
4. The scanning hole protective membrane detachment early warning device as claimed in claim 3, wherein the sensor is located on an inner wall of the housing, and a contact of the sensor protrudes out of an outer surface of the housing.
5. The scanning hole protective membrane separation early warning device as claimed in claim 1 or 2, wherein the sensor is a displacement sensor, and the real-time state parameter of the scanning hole protective membrane detected by the sensor is a distance value between the scanning hole protective membrane and a designated position on the rotating system.
6. The scan hole protective membrane detachment warning device of claim 5, wherein the sensor is mounted on a rotating system, the sensor having a detection head directed at the scan hole protective membrane.
7. A medical imaging device, comprising a main console computer and the scanning hole protection film detachment early warning device of any one of claims 1 to 6, wherein the main control circuit on the fixed main control board is electrically connected with the main console computer.
8. An early warning method based on the early warning device for the detachment of the scanning hole protective membrane of any one of claims 1 to 6, characterized by comprising the following steps:
the main control circuit receives detection data of the sensor;
the main control circuit judges whether the protective membrane of the scanning hole is separated from the outer cover or not according to the detection data of the sensor;
if the protective membrane of the scanning hole is separated from the outer cover, the main control circuit sends an abnormal working instruction to prompt and warn, and the rotating system stops running.
9. The early warning method according to claim 8, wherein when the sensor is a pressure sensor, the step of determining whether the scanning hole protective membrane is detached from the housing specifically comprises:
when the pressure value detected by the pressure sensor is 0, judging that the scanning hole protective membrane is separated from the outer cover;
and when the pressure value detected by the pressure sensor is greater than 0, judging that the scanning hole protective membrane is not separated from the outer cover.
10. The early warning method according to claim 8, wherein when the sensor is a displacement sensor, the step of judging whether the scanning hole protective membrane is separated from the outer cover specifically comprises:
when the distance value detected by the displacement sensor is larger than a set value, judging that the scanning hole protective membrane is separated from the outer cover;
and when the distance value detected by the displacement sensor is smaller than or equal to the set value, judging that the scanning hole protective membrane is not separated from the outer cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710348233.4A CN107049356B (en) | 2017-05-17 | 2017-05-17 | Early warning device for separation of scanning hole protective membrane, medical imaging equipment and early warning method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| US4190773A (en) * | 1977-07-01 | 1980-02-26 | Braden Arthur B | Shutter for rotating source CT scanner |
| JP2008173233A (en) * | 2007-01-17 | 2008-07-31 | Shimadzu Corp | Tomography apparatus |
| CN105433973A (en) * | 2015-12-30 | 2016-03-30 | 沈阳东软医疗系统有限公司 | CT scanning equipment, CT system and filter assembly control method and device |
| CN105916555A (en) * | 2014-01-05 | 2016-08-31 | 新升·塞德里克·于 | Method and system for stereotactic intensity-modulated arc therapy |
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| US9649078B2 (en) * | 2015-07-28 | 2017-05-16 | Dental Imaging Technologies Corporation | Hybrid X-ray system with detachable radiation shield |
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| US4190773A (en) * | 1977-07-01 | 1980-02-26 | Braden Arthur B | Shutter for rotating source CT scanner |
| JP2008173233A (en) * | 2007-01-17 | 2008-07-31 | Shimadzu Corp | Tomography apparatus |
| CN105916555A (en) * | 2014-01-05 | 2016-08-31 | 新升·塞德里克·于 | Method and system for stereotactic intensity-modulated arc therapy |
| CN105433973A (en) * | 2015-12-30 | 2016-03-30 | 沈阳东软医疗系统有限公司 | CT scanning equipment, CT system and filter assembly control method and device |
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