CN104921745A - Multi-detector tomoscanner - Google Patents
Multi-detector tomoscanner Download PDFInfo
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- CN104921745A CN104921745A CN201510410870.0A CN201510410870A CN104921745A CN 104921745 A CN104921745 A CN 104921745A CN 201510410870 A CN201510410870 A CN 201510410870A CN 104921745 A CN104921745 A CN 104921745A
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- flat panel
- radiographic source
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- panel detector
- filter
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Abstract
The invention discloses a multi-detector tomoscanner which comprises radiation sources, flat panel detectors, a detection bed and a collection computer. The radiation sources transmit X-rays, the flat panel detectors receive the X-rays and then convert the X-rays into electric signals, the flat panel detectors are connected with the collection computer, the detection bed supports a patient, a fixing support is arranged around the detection table, the radiation sources and the flat panel detectors are arranged on the inner side of the fixing support, the radiation sources face the detection table in the radial direction of the fixing support, the flat panel detectors in the fixing support are arranged in two rows in parallel, a contact sliding ring with a filter is arranged on the inner side of the fixing support, and the filter rotates around the detection bed along with the contact sliding ring. The same radiation source generates two images correspondingly, and therefore a scanning result is more accurate, three-dimensional reconstruction is conducted on images collected multiple times through the collection computer, and three-dimensional images for diagnosis use of a doctor can be obtained.
Description
Technical field
The present invention relates to the technical field of clinical treatment apparatus, is a kind of multi-detector tomoscanner 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 multi-detector tomoscanner of moveable, low radiological dose.
The technical scheme that the present invention takes for the technical problem existed in solution known technology is:
Multi-detector tomoscanner of the present invention, comprise radiographic source, filter, flat panel detector, detect bed and collecting computer, wherein radiographic source launches X-ray, filter is arranged between radiographic source and flat panel detector, 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, multiple flat panel detector and multiple radiographic source are set in fixed support, each radiographic source is respectively along support bracket fastened radial direction towards detection bed, flat panel detector in fixed support is two rows be arranged in parallel, contact slip ring is set inside fixed support, filter is arranged on and contacts on slip ring and synchronously rotate around detection bed with contact slip ring.
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 filter is set.
The advantage that the present invention has and good effect are:
In multi-detector tomoscanner of the present invention, multiple pulsed radiographic source and flat panel detector are set, flat panel detector in fixed support is two rows be arranged in parallel, can rotate around detection bed under the drive of the contact slip ring of filter in fixed support, during a certain radiographic source work, filter is namely with contacting link motion between radiographic source and the flat-panel detector of correspondence, gather X-ray with two of radiographic source correspondence position flat panel detectors side by side simultaneously, the image that flat panel detector obtains is two-dimensional projection, carrying out three-dimensional reconstruction by collecting computer again can for the 3-D view of diagnosis, same radiographic source correspondence generates two images, thus make scanning result more accurate.The X-ray of launching due to radiographic source is pulsed cone beam, thus the utilization rate of X-ray is higher, each radiographic source is relative with the position of flat panel detector to be detected bed and fixes, error during single radiographic source rotation work can be reduced, taken turns to operate by multiple radiographic source and flat panel detector, can obtain the whole initial datas rebuild needed for image, accelerate the picking rate of data, the quantity of X-rays X that each radiographic source is launched is lower.
Accompanying drawing explanation
Fig. 1 is the structural representation of multi-detector tomoscanner of the present invention;
Fig. 2 is that multi-detector tomoscanner of the present invention ray emission operationally moves towards figure.
Detailed description of the invention
As depicted in figs. 1 and 2, multi-detector tomoscanner of the present invention, comprise radiographic source 1, flat panel detector, 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, multiple flat panel detector and multiple radiographic source are set in fixed support, each radiographic source is respectively along support bracket fastened radial direction towards detection bed, flat panel detector in fixed support is that two rows be arranged in parallel are designated as flat panel detector 2a and flat panel detector 2b respectively, when a certain radiographic source launches X-ray, two row's flat panel detectors of correspondence position receive ray simultaneously, and the signal of telecommunication after conversion is sent to collecting computer simultaneously, contact slip ring 4 is set inside fixed support, filter 6 is arranged on and contacts on slip ring and synchronously rotate around detection bed with contact slip ring.
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 filter 6 is set, under the prerequisite not affecting image spatial resolution, improves the uniformity of image, improve the artifact of image border.
In multi-detector tomoscanner of the present invention, multiple pulsed radiographic source and flat panel detector are set, flat panel detector in fixed support is two rows be arranged in parallel, can rotate around detection bed under the drive of the contact slip ring of filter in fixed support, during a certain radiographic source work, filter is namely with contacting link motion between radiographic source and the flat-panel detector of correspondence, gather X-ray with two of radiographic source correspondence position flat panel detectors side by side simultaneously, the image that flat panel detector obtains is two-dimensional projection, carrying out three-dimensional reconstruction by collecting computer again can for the 3-D view of diagnosis, same radiographic source correspondence generates two images, thus make scanning result more accurate.The X-ray of launching due to radiographic source is pulsed cone beam, thus the utilization rate of X-ray is higher, each radiographic source is relative with the position of flat panel detector to be detected bed and fixes, error during single radiographic source rotation work can be reduced, taken turns to operate by multiple radiographic source and flat panel detector, can obtain the whole initial datas rebuild needed for image, accelerate the picking rate of data, the quantity of X-rays X that each 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 (3)
1. a multi-detector tomoscanner, comprise radiographic source, filter, flat panel detector, detect bed and collecting computer, wherein radiographic source launches X-ray, filter is arranged between radiographic source and flat panel detector, 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, multiple flat panel detector and multiple radiographic source are set in fixed support, each radiographic source is respectively along support bracket fastened radial direction towards detection bed, flat panel detector in fixed support is two rows be arranged in parallel, contact slip ring is set inside fixed support, filter is arranged on and contacts on slip ring and synchronously rotate around detection bed with contact slip ring.
2. multi-detector tomoscanner according to claim 1, is characterized in that: radiographic source is pulsed, rotary-anode X-ray source, launches cone beam.
3. multi-detector tomoscanner according to claim 1 and 2, is characterized in that: radiographic source and the filter detected between bed are Bowtie filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510410870.0A CN104921745A (en) | 2015-07-14 | 2015-07-14 | Multi-detector tomoscanner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510410870.0A CN104921745A (en) | 2015-07-14 | 2015-07-14 | Multi-detector tomoscanner |
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| Publication Number | Publication Date |
|---|---|
| CN104921745A true CN104921745A (en) | 2015-09-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510410870.0A Pending CN104921745A (en) | 2015-07-14 | 2015-07-14 | Multi-detector tomoscanner |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106714905A (en) * | 2016-08-01 | 2017-05-24 | 深圳市奥沃医学新技术发展有限公司 | Radiotherapy device and beam imaging method |
-
2015
- 2015-07-14 CN CN201510410870.0A patent/CN104921745A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106714905A (en) * | 2016-08-01 | 2017-05-24 | 深圳市奥沃医学新技术发展有限公司 | Radiotherapy device and beam imaging method |
| CN106714905B (en) * | 2016-08-01 | 2019-12-27 | 深圳市奥沃医学新技术发展有限公司 | Radiotherapy equipment and beam imaging method |
| US11135450B2 (en) | 2016-08-01 | 2021-10-05 | Shenzhen Our New Medical Technologies Development Co., Ltd. | Radiation therapy apparatus and beam imaging method |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150923 |
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| WD01 | Invention patent application deemed withdrawn after publication |