CN107307876A - The high KV chest radiographies method of DR Dual Energy Subtractions diagnosed for pneumoconiosis - Google Patents
The high KV chest radiographies method of DR Dual Energy Subtractions diagnosed for pneumoconiosis Download PDFInfo
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- CN107307876A CN107307876A CN201710699009.XA CN201710699009A CN107307876A CN 107307876 A CN107307876 A CN 107307876A CN 201710699009 A CN201710699009 A CN 201710699009A CN 107307876 A CN107307876 A CN 107307876A
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- pneumoconiosis
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
- A61B6/50—Clinical applications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
- A61B6/54—Control of apparatus or devices for radiation diagnosis
- A61B6/542—Control of apparatus or devices for radiation diagnosis involving control of exposure
Abstract
The invention discloses a kind of high KV chest radiographies method of DR Dual Energy Subtractions diagnosed for pneumoconiosis, it uses DR Dual Energy Subtractions to combine high KV progress Chest image and takes the photograph piece, compared with traditional high kilovoltage takes the photograph piece, photography method of the present invention is when applied to pneumoconiosis examination and diagnosis, it is remarkably improved A-class picture rate and intrapulmonary small opacities recall rate, exposed by 120 kV, dust small opacities and its fine structure shade more are clearly showed that, there is important clinical meaning to the diagnosis particularly early diagnosis of pneumoconiosis.
Description
Technical field
The present invention relates to digital radiography（Direct Digital Radiography, DR）The application of technology, tool
Body is related to application of the DR Dual Energy Subtraction chest radiography methods when pneumoconiosis is diagnosed.
Background technology
Pneumoconiosis is that dust is largely gathered in lung tissue, causes lung fibrosis pathological change, lung tissue is formed
The damage of progressive.Pneumoconiosis Patients early stage have no specific symptom, with lesion growth can go out mostly cough, expectoration,
Spitting of blood, pectoralgia, expiratory dyspnea, constitutional symptom or even serious complication.Pneumoconiosis is the topmost occupational disease of China, is not only suffered from
Patient's number is more, and harm is big, is to cause labour capacity reduction, disable and influence the disease in life-span, is also that country and enterprise pay for
The main occupational disease repaid.Therefore, the diagnosis of pneumoconiosis is not only a policy very strong work, and the early stage of pneumoconiosis examines
Disconnected, early treatment also has very important meaning to the progress of conditions of patients.
The diagnosis of pneumoconiosis be the pneumoconiosis standard film that is made using unification of the motherland as control, with reference to patient's dust contact history, then
Diagnosed by the diagnostic bank of 3 occupational disease pneumoconiosis diagnosis physician qualifications achieved above.With computer technology and image procossing
Technology is developed rapidly, and medical imaging device, which is constantly updated, is regenerated, and DR technologies are also being developed rapidly.In the pneumoconiosis of GBZ 70-2015
In sick diagnostic criteria, pneumoconiosis diagnosis standard film is supplemented and adjusted, on the basis of 23 traditional high kilovoltage x-ray rabats
3 DR rabats are added, and add annex F（Normative appendix）" technical requirements of digital X-ray chest radiograph " carry out specification
DR camera works.Compared with traditional high kilovoltage x-ray rabat, digital imaging technology substantially increases information content, fine and smooth with image,
Good contrast, can adjust image, many advantages, such as radiating small.But, conventional numerical imaging to be overlapped in breastbone, shoulder blade,
Rib, subphrenic disease, which exist, shows unclear blind area, and rib mutually forward laps with breast tissue and brings " vision to diagnostician
Obstacle ", influences the recall rate of intrapulmonary lesser tubercle, can influence the recall rate and rate of correct diagnosis of pneumoconiosis.
DR Dual Energy Subtraction imaging techniques are using the different bone of the body density x-ray photon different to energy from soft tissue
Attenuation by absorption mode it is different the characteristics of, it is raw after the image composition of bone in common thoracic photography or soft tissue is selectively subtracted
Into the technology of the only image of soft tissue or bone component.Pass through the visible Chest Image blocked without bone tissue of the image after processing
With the ossa thoracis tissue image without peripheral organs or heart, it can show lesion and become apparent from.
At present, there is not yet the high KV of DR Dual Energy Subtractions is taken the photograph into piece is used for the corresponding report and text of pneumoconiosis examination and diagnosis
Offer.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of high KV chests of DR Dual Energy Subtractions diagnosed for pneumoconiosis
Photography method, the photography method can more clearly show the fine structure of Pneumoconiosis Patients lesion, so as to be conducive to examining for pneumoconiosis
Disconnected and treatment.
In order to solve the above technical problems, the high KV chest radiography sides of DR Dual Energy Subtractions that the present invention is diagnosed for pneumoconiosis
Method, comprises the following steps：
（1）Piece is taken the photograph for there is dust contact history person to carry out Chest image；
（2）DR systems use double exposure：
Interval time is that within 200 ms, the x-ray bulb output energy of double exposure is respectively 70 kV and 120 kV, is computed
Common DR pictures, simple lung tissue picture, three images of simple bone image are disposably obtained after machine processing；
（3）According to above-mentioned image pneumoconiosis diagnosis is carried out according to the pneumoconiosis of GBZ 70-2015 diagnostic criteria.
On the basis of above-mentioned technical proposal, step（2）The interval time of the double exposure is 100 ms；Step
（2）When the double exposure takes the photograph piece, bulb position is set, its center line is directed at the sixth dorsal vertebra level of examination object, human body
The same position of conventional Chest image is kept, and fully keeps breath-hold state after air-breathing.
Above-mentioned technical proposal is taken, the device have the advantages that being：
1st, the present invention uses DR dual-energy subtraction techniques, passes through the visible simple pulmonary group blocked without bone tissue of the image after processing
Image and the simple bone tissue image without peripheral organs or heart are knitted, compared with traditional high kilovoltage takes the photograph piece, one is remarkably improved
Level piece rate and intrapulmonary lesser tubercle recall rate, especially with rib, the lesser tubercle of clavicle overlapping part, bone shadow is eliminated by subtracting shadow
Block, pneumoconiosis small opacities is shown clearer.
2nd, DR Dual Energy Subtractions of the present invention combine high KV and carry out taking the photograph piece, because high kilovoltage radiography improves kilovolt value, accordingly
Ground reduces milliampere-second, significantly shorten the time for exposure, improves image definition；Meanwhile, during high kilovoltage radiography, material is penetrated to X
Linear absorption coefficient is raised and diminished with tube voltage, thus obtains larger exposure latitude, is improved and is taken the photograph tablet quality, and image
Show levels enriches, and expands the shown scope of organization, shows dust small opacities and its fine structure clearer, to dirt
The diagnosis of tuberculosis particularly early diagnosis has important clinical meaning.
Brief description of the drawings
The present invention is further detailed explanation with reference to the accompanying drawings and detailed description.
Fig. 1 is the common DR pictures photographed using the present invention；
Fig. 2 is the simple lung tissue picture photographed using the present invention.
Embodiment
The high KV chest radiographies method of DR Dual Energy Subtractions diagnosed for pneumoconiosis, comprises the following steps：
（1）Piece is taken the photograph for there is dust contact history person to carry out Chest image；
（2）DR systems use double exposure：
Exposure time interval is 100ms, and the x-ray bulb output energy of double exposure is respectively 70 kV and 120 kV, through computer
Disposable common DR pictures, such as Fig. 2 three images of simple lung tissue picture, simple bone image obtained such as Fig. 1 after processing；If
Place pipe position, its center line is directed at the sixth dorsal vertebra level of examination object, and human body keeps the same one of conventional Chest image
Position, and fully keep breath-hold state after air-breathing.
（3）According to above-mentioned three images, pneumoconiosis diagnosis is carried out according to the pneumoconiosis of GBZ 70-2015 diagnostic criteria.
To show DR Dual Energy Subtractions of the present invention high KV chest radiographies method facing in occupational pneumoconiosis diagnostic application
Bed effect, spy carries out following clinical application research, specific as follows：
1st, general information
To 80 Pneumoconiosis Patients made a definite diagnosis, the technology checked according to the pneumoconiosis diagnostic criteria rabats of GBZ 70-2015 x-ray
It is required that, using the high KV of DR Dual Energy Subtractions and traditional high kilovoltage two kinds of inspection methods, respectively take the photograph Chest image piece one.Wherein
Patient's I phases 40 of pneumoconiosis are made a definite diagnosis；The II phases 32；III phase 8.Male 72, women 8 is the oldest 74 years old, minimum
It is 36 years old, average 60.5 years old.
2nd, equipment
Traditional high kilovoltage：800 mA PHILIPS BACKY photographic apparatus；Konica SRX-101 A automatic film developers；Universal Ke
Up to 14 × 17 inch gages of x line films+middling speed calcium tungstate screen-piece combination.
The high KV of DR Dual Energy Subtractions：U.S. GE Definium 6000 digitize x line camera chains, and hardware condition is specifically such as
Under：
High-frequency inversion high pressure generator：The kW of peak power output >=20, reverse frequency >=20 kHz, the kV of output voltage 40~
150 kV；Rotary anode bulb：Nominal focus point value：Small focus≤0.6；Large focal spot≤1.3；With grid, automatic exposure control
System and the wild vertical position photography support of detection；Flat panel detector：Useful detection area >=356mm × 356mm（14 in×14 in）, as
Plain size≤200 μm;Picture element matrix >=2048 × 2048；Grid：Tube voltage compares 10 in the kV of 90 kV~125, selection grid：1
~15：1,34 lines of grid density/cm~80 lines/cm.
3rd, research method
The rabat of every patient's two methods inspection of collection is randomly selected, by 3 national pneumoconiosis diagnostician's qualifications
Expert, according to chest film quality in pneumoconiosis diagnostic criteria and performance rating standard, count respectively two methods rabat A-class picture,
Two grades of pieces, third-grade film and waste paper rate, and to anatomical structure（Heart back zone lung marking, tyre lung marking and pleurobranch wall etc.）By display
It is clear to be classified with unintelligible；Collective's diagnosis is carried out to two groups of rabats, including X-ray film quality, overall closeness, branch
Scope, pneumoconiosis are by stages etc..
4th, statistical procedures
Statistical analysis is carried out to data using the statistics softwares of SPSS 17.0, wherein, enumeration data is with percentage（%）Represent, group
Between compare useχ 2 Examine,P＜ 0.05 is that difference is statistically significant.
5th, result
5.1 A-class picture rates
The A-class picture rate of the high KV of DR Dual Energy Subtractions and traditional high kilovoltage rabat is respectively 96.3% and 50%, warpχ 2 Examine, two
The difference of person's A-class picture rate has statistical significance（P＜ 0.01）, it is shown in Table 1.
1 two kinds of method for imaging chest film quality situations of table（）
The overall display rate of 5.2 lung's fine structures
The high KV of DR Dual Energy Subtractions and traditional high kilovoltage rabat are respectively 94.3% He to the overall display rate of lung's fine structure
60.5%, overall display rate warpχ 2 Examine, difference is statistically significant（P＜ 0.01）, it is shown in Table 2.
The Liang Zhong method for imaging lung fine structure of table 2 shows situation（）
5.3 small opacities totality closeness compares
The overall closeness result of two kinds of method for imaging small opacities is relatively shown in Table 3, as can be known from Table 3, traditional high KV rabats diagnosis
0 grade of total body density collection for 19,13 of 0 grade of KV rabat total body densities collection high higher than dual energy, and traditional high KV rabats are examined
It is 36 that disconnected total body density, which integrates as I grades, 42 of I grades of KV rabats total body density collection high less than dual energy, the rabat of two methods
Diagnosis total body density collection does not change for II grade and III grade of number of cases, and data above shows that the high KV of dual energy of the present invention is more beneficial for
The early diagnosis of pneumoconiosis.
The comparison of the overall closeness result of 3 two kinds of method for imaging small opacities of table（Example）
5.4 pneumoconiosis recall rates
Traditional high kilovoltage rabat has 1 to be considered as waste paper because of chest film quality problem, and diagnosis is not given；Separately there are 10 to be diagnosed as 0+；
Pneumoconiosis Patients 69 are detected, pneumoconiosis recall rate is 86.3%.The high KV detection pneumoconiosis condition subject 79 of dual energy, pneumoconiosis
Recall rate is 98.7%, pneumoconiosis recall rate warpχ 2 Examine, difference is statistically significant（P＜ 0.01）, it is shown in Table 4.
4 two kinds of method for imaging diagnostic results of table（Example）
In summary, the present invention uses the high KV photography methods of DR Dual Energy Subtractions, can obtain the simple pulmonary blocked without bone tissue
Tissue image, " dysopia " brought by eliminating rib and breast tissue mutually to forward lap to diagnostician, more clearly
Dust shade is shown to Chu, compared with traditional high KV, A-class picture rate is remarkably improved（96.3% versus 50.0%,P<
0.01）, improve the overall display rate of chest intrapulmonary fine structure（94.3% versus 60.5%,P<0.01）With to pneumoconiosis
Recall rate（98.7% versus 86.3%,P<0.01）, in addition, overall close by the rabat diagnosis for comparing two kinds of photography methods
Degree collection understands that the high KV photography methods of DR Dual Energy Subtractions of the invention are advantageously in the early diagnosis of pneumoconiosis.
Applicant states that person of ordinary skill in the field is on the basis of above-described embodiment, by above-described embodiment component
Concrete content point value, the technical scheme with Summary is combined, so that the new number range produced, is also this hair
One of bright record scope, the application no longer enumerates these number ranges to make specification concise.
Claims (3)
1. the high KV chest radiographies method of DR Dual Energy Subtractions diagnosed for pneumoconiosis, it is characterised in that comprise the following steps：
（1）Piece is taken the photograph for there is dust contact history person to carry out Chest image；
（2）DR systems use double exposure：
Interval time is that within 200 ms, the x-ray bulb output energy of double exposure is respectively 70 kV and 120 kV, is computed
Common DR pictures, simple lung tissue picture, three images of simple bone image are disposably obtained after machine processing；
（3）According to above-mentioned image, pneumoconiosis diagnosis is carried out according to the pneumoconiosis of GBZ 70-2015 diagnostic criteria.
2. the high KV chest radiographies method of DR Dual Energy Subtractions diagnosed as claimed in claim 1 for pneumoconiosis, its feature exists
In step（2）The interval time of the double exposure is 100 ms.
3. the high KV chest radiographies method of DR Dual Energy Subtractions diagnosed as claimed in claim 1 for pneumoconiosis, its feature exists
In step（2）When the double exposure takes the photograph piece, bulb position, its center line alignment sixth dorsal vertebra level height, human body are set
The same position of conventional Chest image is kept, and fully keeps breath-hold state after air-breathing.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070133854A1 (en) * | 2005-12-08 | 2007-06-14 | Sooyeul Lee | Method and device for measuring pulmonary nodule volume using dual-energy substraction image |
| CN106296613A (en) * | 2016-08-15 | 2017-01-04 | 南京普爱医疗设备股份有限公司 | A kind of Dual Energy Subtraction method based on DR machine |
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2017
- 2017-08-15 CN CN201710699009.XA patent/CN107307876A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070133854A1 (en) * | 2005-12-08 | 2007-06-14 | Sooyeul Lee | Method and device for measuring pulmonary nodule volume using dual-energy substraction image |
| CN106296613A (en) * | 2016-08-15 | 2017-01-04 | 南京普爱医疗设备股份有限公司 | A kind of Dual Energy Subtraction method based on DR machine |
Non-Patent Citations (4)
| Title |
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| 崔永强: "双能量减影和计算机辅助技术在DR胸片筛查肺结节的价值", 《中国实用医药》 * |
| 张爱农等: "直接数字X摄影在尘肺病诊断中的应用价值", 《临床放射学杂志》 * |
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Application publication date: 20171103 |