CN105030267A - X-ray tomographic scanner - Google Patents
X-ray tomographic scanner Download PDFInfo
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- CN105030267A CN105030267A CN201510410872.XA CN201510410872A CN105030267A CN 105030267 A CN105030267 A CN 105030267A CN 201510410872 A CN201510410872 A CN 201510410872A CN 105030267 A CN105030267 A CN 105030267A
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- flat panel
- panel detector
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Abstract
An X-ray tomographic scanner comprises a ray source, a flat panel detector, a detection bed and a collection computer, wherein the ray source emits X-rays, the flat panel detector receives the X-rays, converts the X-rays into electric signals and is connected with the collection computer, and the detection bed supports a patient; a fixed support is arranged around the detection bed, a contact slip ring is arranged at the inner side of the fixed support, the ray source and the flat panel detector are fixedly arranged on the contact slip ring and arranged opposite with the same diameter and rotate synchronously, the contact slip ring rotates around the detection bed, and a movement detection device is arranged over the fixed support. Images collected by the ray source and the flat panel detector during rotation are two-dimensional projection, and the two-dimensional projection is reconstructed in a three-dimensional mode through the collecting computer to obtain three-dimensional images used for diagnosis of doctors. The use ratio of the X-rays is higher, the speed of collecting data is higher, and movement of the patient can be monitored at all times through the movement detection device.
Description
Technical field
The present invention relates to the technical field of clinical treatment apparatus, is a kind of x-ray tomography instrument of moveable, low radiological dose specifically.
Background technology
Computer tomography and CT are a kind of important Dynamic Non-Destruction Measurements, and the X-ray projection data under multiple projection view angles can be utilized to obtain two dimension or the 3-D view of the inside and outside architectural feature of object.It is with advantages such as harmless, high accuracy, three-dimensional visibles, and be widely used in clinical medicine diagnostic imaging, image is that the diagnosis of patient disease provides important foundation.But present many hospitals CT examination needs reservation, can not meet the demand of serious symptom, critical patient, be unfavorable for the timely treatment of emergency case sufferer; Along with China progresses into aging society, the resource of hospital will than now more in short supply.
It is this static intrinsic hypothesis that the mathematical model of computer tomography depends on scanned object.In CT scan process, when requiring data acquisition, patient is absolutely stationary, but in fact can there is the motion of autonomous or non-autonomous thus destroy concordance and the integrity of data for projection in patient in a scan, once move in data acquisition, will cause serious artifact appears in final CT image, even affect diagnosis.This problem more easily occurs in the Cone-Beam CT that data acquisition time is longer.Usually because operator and scan patients be not at same room, be difficult to the motion in Timeliness coverage scanning process, often judge whether patient moves according to the artifact of rebuilding image, once in motion artifact causes image to be difficult to diagnosis, just can rescan patient, the X-ray radiation dosage causing patient to be subject to increases by this.
In addition, traditional CT data for projection is one dimensional image, and the view data after rebuilding is two dimensional image, the 3-D view of finally recombinating is piled up by continuous multiple two dimension slicing to form, the metal artifacts of its image is comparatively serious, and traditional CT adopts fan-ray beam to scan, the radiological dose of ray is higher.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of x-ray tomography instrument of moveable, low radiological dose.
The technical scheme that the present invention takes for the technical problem existed in solution known technology is:
X-ray tomography instrument of the present invention, comprise radiographic source, flat panel detector, detection bed and collecting computer, wherein radiographic source launches X-ray, flat panel detector receives X-ray and converts it to the signal of telecommunication, flat panel detector is connected with collecting computer, detect bed support patient, around detection bed, fixed support is set, contact slip ring is set inside fixed support, radiographic source and flat panel detector are fixedly installed on respectively and contact on slip ring, and radiographic source and flat panel detector are oppositely arranged and synchronous axial system with diameter, contact slip ring rotates around detection bed; Directly over support bracket fastened, motion detection apparatus is set.
The present invention can also adopt following technical measures:
Described radiographic source is pulsed, rotary-anode X-ray source, launches cone beam.
Between described radiographic source and detection bed, Bowtie is set and filters line device.
Motion detection apparatus is motion cameras, and motion cameras and fixed support are fixed and towards detecting bed.
The advantage that the present invention has and good effect are:
The pulse radiographic source of synchronous axial system and dynamic flat panel detector are set in x-ray tomography instrument of the present invention, under the drive of the contact slip ring in fixed support, radiographic source and flat panel detector can rotate around detection bed, gather obtain image be two-dimensional projection, then carry out three-dimensional reconstruction by collecting computer can for the 3-D view of diagnosis.The X-ray of launching due to radiographic source is pulsed cone beam, and thus the utilization rate of X-ray is higher, and only need rotate a circle whole initial datas that can obtain and rebuild needed for image, accelerates the picking rate of data, and the quantity of X-rays X that radiographic source is launched is lower.And the motion cameras arranged on fixed support can detect patient image on bed by Real-time Collection, the radiation work of scanner can be stopped when patient moves in time, thus avoid patient to be subject to unnecessary x radiation x.
Accompanying drawing explanation
Fig. 1 is the structural representation of x-ray tomography instrument of the present invention;
Fig. 2 is that x-ray tomography instrument of the present invention ray emission operationally moves towards figure.
Detailed description of the invention
As depicted in figs. 1 and 2, x-ray tomography instrument of the present invention, comprise radiographic source 1, flat panel detector 2, detect bed 5 and collecting computer, wherein radiographic source launches X-ray, flat panel detector receives X-ray and converts it to the signal of telecommunication, flat panel detector is connected with collecting computer, detect bed support patient 7, around detection bed, fixed support 3 is set, contact slip ring 4 is set inside fixed support, radiographic source and flat panel detector are fixedly installed on respectively and contact on slip ring, and radiographic source and flat panel detector are oppositely arranged and synchronous axial system with diameter, contact slip ring rotates around detection bed, directly over support bracket fastened, motion detection apparatus 8 is set.
Radiographic source is pulsed, rotary-anode X-ray source, launches cone beam, thus makes the quantity of X-rays X that radiographic source keeps lower, reduces the radiation exposure of patient.
Between radiographic source and detection bed, Bowtie is set and filters line device 6, under the prerequisite not affecting image spatial resolution, improve the uniformity of image, improve the artifact of image border.
Motion detection apparatus 8 is motion cameras, and motion cameras and fixed support are fixed and towards detecting bed.Whether the patient detected on bed by Flying Camera machine testing is moved.
The pulse radiographic source of synchronous axial system and dynamic flat panel detector are set in x-ray tomography instrument of the present invention, under the drive of the contact slip ring in fixed support, radiographic source and flat panel detector can rotate around detection bed, gather obtain image be two-dimensional projection, then carry out three-dimensional reconstruction by collecting computer can for the 3-D view of diagnosis.The X-ray of launching due to radiographic source is pulsed cone beam, and thus the utilization rate of X-ray is higher, and only need rotate a circle whole initial datas that can obtain and rebuild needed for image, accelerates the picking rate of data, and the quantity of X-rays X that radiographic source is launched is lower.
The above, it is only preferred embodiment of the present invention, not any pro forma restriction is done to the present invention, although the present invention with preferred embodiment openly as above, but, and be not used to limit the present invention, any those skilled in the art, do not departing within the scope of technical solution of the present invention, certainly the technology contents of announcement can be utilized to make a little change or modification, become the Equivalent embodiments of equivalent variations, in every case be the content not departing from technical solution of the present invention, according to any simple modification that technical spirit of the present invention is done above embodiment, equivalent variations and modification, all belong in the scope of technical solution of the present invention.
Claims (4)
1. an x-ray tomography instrument, comprise radiographic source, flat panel detector, detection bed and collecting computer, wherein radiographic source launches X-ray, flat panel detector receives X-ray and converts it to the signal of telecommunication, flat panel detector is connected with collecting computer, detect bed support patient, it is characterized in that: around detection bed, fixed support is set, contact slip ring is set inside fixed support, radiographic source and flat panel detector are fixedly installed on respectively and contact on slip ring, and radiographic source and flat panel detector are oppositely arranged and synchronous axial system with diameter, contact slip ring rotates around detection bed; Directly over support bracket fastened, motion detection apparatus is set.
2. x-ray tomography instrument according to claim 1, is characterized in that: radiographic source is pulsed, rotary-anode X-ray source, launches cone beam.
3. x-ray tomography instrument according to claim 1 and 2, is characterized in that: arrange Bowtie between radiographic source and detection bed and filter line device.
4. x-ray tomography instrument according to claim 3, is characterized in that: motion detection apparatus is motion cameras, and motion cameras and fixed support are fixed and towards detecting bed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510410872.XA CN105030267A (en) | 2015-07-14 | 2015-07-14 | X-ray tomographic scanner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510410872.XA CN105030267A (en) | 2015-07-14 | 2015-07-14 | X-ray tomographic scanner |
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| CN105030267A true CN105030267A (en) | 2015-11-11 |
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| CN201510410872.XA Pending CN105030267A (en) | 2015-07-14 | 2015-07-14 | X-ray tomographic scanner |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107261342A (en) * | 2017-07-12 | 2017-10-20 | 合肥中科离子医学技术装备有限公司 | Proton CT collimator systems |
| CN108226195A (en) * | 2017-12-28 | 2018-06-29 | 清华大学 | CT examination system and CT imaging methods |
| CN112198378A (en) * | 2020-09-07 | 2021-01-08 | 上海联影医疗科技股份有限公司 | Slip ring fault detection device and method |
| CN112903728A (en) * | 2021-01-18 | 2021-06-04 | 浙江华电器材检测研究所有限公司 | Non-destructive testing device and method for insulation piercing connector based on CT tomography |
| WO2023078039A1 (en) * | 2021-11-05 | 2023-05-11 | 同方威视技术股份有限公司 | Beam output control method and apparatus for optical machine in imaging system, and ct imaging system |
-
2015
- 2015-07-14 CN CN201510410872.XA patent/CN105030267A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107261342A (en) * | 2017-07-12 | 2017-10-20 | 合肥中科离子医学技术装备有限公司 | Proton CT collimator systems |
| CN108226195A (en) * | 2017-12-28 | 2018-06-29 | 清华大学 | CT examination system and CT imaging methods |
| CN108226195B (en) * | 2017-12-28 | 2023-10-13 | 清华大学 | CT inspection system and CT imaging method |
| CN112198378A (en) * | 2020-09-07 | 2021-01-08 | 上海联影医疗科技股份有限公司 | Slip ring fault detection device and method |
| CN112903728A (en) * | 2021-01-18 | 2021-06-04 | 浙江华电器材检测研究所有限公司 | Non-destructive testing device and method for insulation piercing connector based on CT tomography |
| WO2023078039A1 (en) * | 2021-11-05 | 2023-05-11 | 同方威视技术股份有限公司 | Beam output control method and apparatus for optical machine in imaging system, and ct imaging system |
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| WD01 | Invention patent application deemed withdrawn after publication |