CN104337535A - Computed tomography method and device - Google Patents
Computed tomography method and device Download PDFInfo
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- CN104337535A CN104337535A CN201310333099.2A CN201310333099A CN104337535A CN 104337535 A CN104337535 A CN 104337535A CN 201310333099 A CN201310333099 A CN 201310333099A CN 104337535 A CN104337535 A CN 104337535A
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- scanning
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Abstract
The invention discloses a computed tomography method. The computed tomography method includes steps of 1, scanning a slide of a patient to obtain a slide image; 2, setting a lung scanning range on the slide; 3, setting lung scanning and scanning restarting parameters; 4, tomoscanning the lung in an interval scanning manner. The invention further discloses a computed tomography device. By setting the scanning manner as the interval scanning, the lung can be scanned under the condition that dosage is as low as possible.
Description
[technical field]
The present invention is relevant a kind of computer tomography method and apparatus, refers in particular to a kind of computer tomography method and apparatus that can carry out low-dose scanning to pulmonary.
[background technology]
Worldwide, the incidence and mortality of pulmonary carcinoma has become one of the highest malignant tumor.Early find, early treatment is the key reducing lung cancer mortality.At present, adopt CT (computerized tomography) imaging to scan pulmonary, become a kind of health check-up mode of healthy population health check-up pulmonary carcinoma.But can produce X-ray because CT is imaged on scanning process, X-ray can cause radiation damage to human body, excessive X-ray damage can cause cancer.
At present, adopt the mode of pulmonary's health check-up scanning all to use conventional pulmonary's mode, uniquely unlike the use of lower electric current, the dosage that the conventional pulmonary of the dose ratio that health check-up is used checks is low.But the crowd of health examination still receives certain dosage.
Therefore, the necessary computer tomography method and apparatus providing a kind of improvement, to overcome the defect of above computer tomograph imaging method and device existence.
[summary of the invention]
The object of this invention is to provide a kind of at the computer tomography method and apparatus ensureing in the alap situation of dosage, scan pulmonary.
Computer tomography method of the present invention is achieved through the following technical solutions: a kind of computer tomography method, and it comprises,
Step 1, positions sheet scanning to patient, obtains spacer image;
Step 2, spacer sets lung scanning scope;
Step 3, setting lung scanning and reconstruction sweep parameter;
Step 4, adopts the mode of interval scan to carry out pulmonary's tomoscan.
In a preferred embodiment, set sweep spacing as being greater than 3mm, the image thicknesses of reconstruction is 0.6mm.
In a preferred embodiment, described sweep spacing is 3mm, and the image thicknesses of reconstruction is 0.6mm.
In a preferred embodiment, the width setting collimator is 2*0.6mm.
Computed tomographic apparatus of the present invention is achieved through the following technical solutions: a kind of computed tomographic apparatus, and it comprises the driver module of x-ray source, detector, collimator between x-ray source and detector, image reconstruction module, the input module of input sweep spacing, the control module receiving input module information and adjustment detector width.
In a preferred embodiment, described sweep spacing is greater than 3mm, and the image thicknesses of reconstruction is 0.6mm.
In a preferred embodiment, described sweep spacing is 3mm, and the image thicknesses of reconstruction is 0.6mm.
In a preferred embodiment, the width of collimator is 2*0.6mm.
In a preferred embodiment, described computed tomographic apparatus is used for lung scanning.
Compared with prior art, computer tomography method and apparatus of the present invention is ensureing in the alap situation of dosage, is scanning pulmonary.
[accompanying drawing explanation]
Fig. 1 is the three-dimensional exploded view of computer tomography method and apparatus of the present invention.
Fig. 2 is the three-dimensional exploded view of another angle shown in Fig. 1.
[detailed description of the invention]
Fig. 1 is a kind of computer tomography method can carrying out low-dose scanning to pulmonary, and it comprises:
Step 1, positions sheet scanning to patient, obtains spacer image;
Step 2, spacer sets lung scanning scope;
Step 3, setting lung scanning and reconstruction sweep parameter;
Step 4, adopts the mode of interval scan to carry out pulmonary's tomoscan.
In step 3, scan mode is interval scan, sets sweep spacing as being not less than 3mm, and the object at setting surface sweeping interval to ensure not under-enumeration.The image thicknesses that setting is rebuild is 0.6mm.Mainly check Lung neoplasm because pulmonary checks, in general, being less than 3mm can not consider.Interval scan refers to as before and after tomography, the interval of twice sweep is greater than the width of tomography single sweep operation.
In this computed tomographic apparatus, the width of its collimator is 2*0.6mm.Owing to adopting interval scan, the ratio that the length that this computer tomography scans accounts for normal lung sweep length is: 2*0.6/ (2*0.6+3)=28.57%, relatively normal low-dose scanning, adopt the scan mode of this programme to save the dosage of 71.43%, greatly reduce the dosage that human body absorbs.
Fig. 2 is a kind of computed tomographic apparatus that can carry out low-dose scanning to pulmonary, it comprise x-ray source 1, detector 2, collimator 3 between x-ray source and detector 2, image reconstruction module 4, input sweep spacing input module 5, receive the control module 6 of input module 5 information and adjust the driver module 7 of detector width.The X-ray of launching from x-ray source 1 is irradiated to human body after collimator 3 filters, receive from being detected device 2 after human body passes again, be detected the data that device 2 receives and be sent to the reconstruction that image reconstruction module 4 carries out image again, wherein input module 5 can set sweep parameter.
In the present embodiment, the width of collimator is 2*0.6mm.Set sweep spacing as being not less than 3mm by input module 5, the thickness of the image that setting is rebuild is 0.6mm.Owing to adopting interval scan, the ratio that the length that this computer tomography scans accounts for normal lung sweep length is: 2*0.6/ (2*0.6+3)=28.57%, relatively normal low-dose scanning, adopt the scan mode of this programme to save the dosage of 71.43%, greatly reduce the dosage that human body absorbs.
The foregoing is only one embodiment of the present invention, it not whole or unique embodiment, the change of those of ordinary skill in the art by reading description of the present invention to any equivalence that technical solution of the present invention is taked, is claim of the present invention and contains.
Claims (9)
1. a computer tomography method, it comprises,
Step 1, positions sheet scanning to patient, obtains spacer image;
Step 2, spacer sets lung scanning scope;
Step 3, setting lung scanning and reconstruction sweep parameter;
Step 4, adopts the mode of interval scan to carry out pulmonary's tomoscan.
2. computer tomography method as claimed in claim 1, it is characterized in that: set sweep spacing as being greater than 3mm, the image thicknesses of reconstruction is 0.6mm.
3. computer tomography method as claimed in claim 1, it is characterized in that: described sweep spacing is 3mm, the image thicknesses of reconstruction is 0.6mm.
4. as claimed in claim 3 computer tomography method, it is characterized in that: setting collimator width be 2*0.6mm.
5. a computed tomographic apparatus, it comprises the driver module of x-ray source, detector, collimator between x-ray source and detector, image reconstruction module, the input module of input sweep spacing, the control module receiving input module information and adjustment detector width.
6. computed tomographic apparatus as claimed in claim 5, it is characterized in that: described sweep spacing is greater than 3mm, the image thicknesses of reconstruction is 0.6mm.
7. computed tomographic apparatus as claimed in claim 5, it is characterized in that: described sweep spacing is 3mm, the image thicknesses of reconstruction is 0.6mm.
8. computed tomographic apparatus as claimed in claim 7, is characterized in that: the width of collimator is 2*0.6mm.
9. the computed tomographic apparatus as described in any one of claim 5 to 8, is characterized in that: described computed tomographic apparatus is used for lung scanning.
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| CN201310333099.2A CN104337535A (en) | 2013-08-02 | 2013-08-02 | Computed tomography method and device |
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| CN201310333099.2A CN104337535A (en) | 2013-08-02 | 2013-08-02 | Computed tomography method and device |
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| CN105433971A (en) * | 2014-07-29 | 2016-03-30 | 上海西门子医疗器械有限公司 | Computed tomography method and device |
| CN107320124A (en) * | 2017-06-28 | 2017-11-07 | 上海联影医疗科技有限公司 | The method and medical image system of spacer scanning are set in medical image system |
| CN108095751A (en) * | 2017-12-18 | 2018-06-01 | 上海联影医疗科技有限公司 | CT perfusion scannings method, system and storage medium |
| WO2018121781A1 (en) * | 2016-12-30 | 2018-07-05 | Shenzhen United Imaging Healthcare Co., Ltd. | Imaging method and system |
| CN108403135A (en) * | 2017-02-10 | 2018-08-17 | 西门子保健有限责任公司 | The method and system of the computer tomography scanning of the injectivity optimizing of target organ |
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| CN108095751A (en) * | 2017-12-18 | 2018-06-01 | 上海联影医疗科技有限公司 | CT perfusion scannings method, system and storage medium |
| CN108095751B (en) * | 2017-12-18 | 2021-02-19 | 上海联影医疗科技股份有限公司 | CT perfusion scanning method, system and storage medium |
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Application publication date: 20150211 |