CN102151139B - Exposure control instrument for X-ray chest photography - Google Patents
Exposure control instrument for X-ray chest photography Download PDFInfo
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- CN102151139B CN102151139B CN201110124999.7A CN201110124999A CN102151139B CN 102151139 B CN102151139 B CN 102151139B CN 201110124999 A CN201110124999 A CN 201110124999A CN 102151139 B CN102151139 B CN 102151139B
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Abstract
The present invention relates to a kind of medical apparatus and instruments, particularly a kind of safety and precise, easy to operate exposure control instrument for X-ray chest photography.Comprise tape, signal processing system, exposure triggering system, described tape comprises pressure bladder, lead rubber and pressure transducer; Signal processing system comprises signal amplification, filtering, analog to digital conversion circuit; Exposure triggering system comprises digital signal processor and exposure signal generator; Pressure transducer in tape is connected with signal processing system by holding wire, and signal processing system is connected with exposure triggering system by data wire, and exposure triggering system is connected with X-ray machine by control line.Compared with traditional method, the present invention can obtain the image of high-quality more reliably.Can also protect abdominal part when taking rabat, while ensureing shooting effect, decreasing the radiation dose of patient's vitals like this, also do not increase the workload of operator, convenient and swift.
Description
Technical field
The present invention relates to a kind of medical apparatus and instruments, particularly a kind of safety and precise, easy to operate exposure control instrument for X-ray chest photography.
Background technology
Radiography of chest, convenient and swift, cheap, it is few that patient accepts radiation dose, in various chest medical imaging, still have huge advantage, but patient particularly the breathing matching problem of infant and deaf mute but fail effectively to be solved always.Still can only rely at present image technology personnel by rule of thumb and perusal control exposure, be difficult to the exposure opportunity accurately grasping instrument, be difficult to obtain reliably the x-ray thoracic photography image of high-quality clearly; In order to the image of high-quality can be obtained, usually need multiexposure, multiple exposure, make again patient accept roentgendosis and be unnecessarily multiplied.Although have the patent No./application number be 89211126.7 and 91205027.6 Chinese patent devise based on the piezoelectric sensing signal at muzzle place and the thermosensitive probe signal control circuit as exposure control signal respectively, but this constructed in two ways is loaded down with trivial details, complicated operation, poor accuracy, topmost deficiency possible cause the cross infection between patient.
Summary of the invention
The present invention is intended to the deficiency making up aforementioned radiography of chest Exposure mode, and finding a kind ofly can provide protection for patient's abdominal part and accurately can control exposure opportunity of X-ray machine, thoracic photography spectrum assignment instrument safe, accurate, easy, reliable, with low cost.
Through a large amount of animal and clinical trial, inventor's primary study amplitude of respiration of patient and the dependency of abdominal pressure signal waveform.Research finds that patient particularly mainly adopts the infant patient of ventral breathing, has the dependency of highly significant between amplitude of respiration and abdominal pressure signal waveform.By to real-time, continuous print output waveform research, found the rule between chest expansion amplitude and abdominal pressure signal intensity, and comprehensive breathing steadily have found best inspiratory phase spectrum assignment point in x-ray thoracic photography process to reduce the correlative factors such as motion blur.The abdominal pressure signal that the present invention is measured by abdominal pressure sensor, through shaping, amplification, filtering, process, can show thoracic breathing amplitude waveform in real time, and produces control signal at best right moment for camera, to be connected exposure process with exposure circuit.
Particularly, exposure control instrument for X-ray chest photography comprises tape, signal processing system, exposure triggering system, and described tape comprises pressure bladder, lead rubber and pressure transducer; Signal processing system comprises signal amplification, filtering, analog to digital conversion circuit; Exposure triggering system comprises digital signal processor and exposure signal generator; Pressure transducer in tape is connected with signal processing system by holding wire, and signal processing system is connected with exposure triggering system by data wire, and exposure triggering system is connected with X-ray machine by control line.
Further, exposure control instrument for X-ray chest photography also comprises signal display system, and this signal display system is in parallel with exposure triggering system.
Further, the inner surface that described lead rubber is positioned at the outer surface of pressure bladder, pressure transducer is positioned at pressure bladder.
Further, institute's pressure bladder is with carrying out by external inflation device the gas tube inflated.
Safe and convenient of the present invention, can obtain the expiratory phase of patient accurately, inspiratory phase and balance period phase, the dynamic observation of pendular movement of mediastinum when being particularly suitable for infant and deaf mute's thoracic photography and can providing foreign body in trachea, reduces patient by according to radiation dose.Compared with traditional method, the present invention can obtain the image of high-quality more reliably.Can also protect abdominal part when taking rabat, while ensureing shooting effect, decreasing the radiation dose of patient's vitals like this, also do not increase the workload of operator, embody the convenient and swift of this equipment operating.
Accompanying drawing explanation
Fig. 1 is annexation schematic diagram between each system in one of them embodiment of the present invention;
Wherein: lead rubber 1, pressure bladder 2, pressure transducer 3, gas tube 4, frenulum 5.
Detailed description of the invention
With reference to accompanying drawing 1, the outer surface of pressure bladder is adhesive with lead rubber, for protecting patient's abdominal part, decreases the radiation dose of patient's vitals like this while ensureing shooting effect.The inner surface of pressure bladder is adhesive with pressure transducer; During use, aerating device can make pressure bladder expand by gas tube when pressure bladder is inflated, then makes pressure transducer be close to patient's abdominal part by the combined effect of frenulum, being connected with signal processing system by holding wire of pressure transducer.
Signal processing system comprises the circuit such as signal amplification, filtering, analog digital conversion, the pressure signal collected is amplified, filtering, the conditioning such as analog digital conversion.And result is connected with exposure triggering system by data wire.
Exposure triggering system comprises digital signal processor and exposure signal generator, by digital signal processor, digitized processing is carried out to the analogue signal of signal processing system process, and result is outputted to exposure signal generator and display system respectively, exposure signal generator is all connected with X-ray machine by control line with display system.User is by after procedure Selection Manual exposure or auto exposure mode, and instrument correspondingly automatically can produce exposure signal and complete exposing operation or produce exposure information and manually complete exposing operation by doctor.
Claims (2)
1.X line thoracic photography spectrum assignment instrument, it comprises tape, signal processing system, exposure triggering system, it is characterized in that described tape comprises pressure bladder, lead rubber and pressure transducer; Signal processing system comprises signal amplification, filtering, analog to digital conversion circuit; Exposure triggering system comprises digital signal processor and exposure signal generator; Pressure transducer in tape is connected with signal processing system by holding wire, and signal processing system is connected with exposure triggering system by data wire, and exposure triggering system is connected with X-ray machine by control line; Also comprise signal display system, this signal display system is in parallel with exposure triggering system; The inner surface that described lead rubber sticks in the outer surface of pressure bladder, pressure transducer sticks in pressure bladder, described exposure triggering system is according to the expiratory phase of patient, inspiratory phase and balance period produce control signal mutually, described pressure transducer is abdominal pressure sensor, the abdominal pressure signal measured by abdominal pressure sensor, through shaping, amplification, filtering, process, thoracic breathing amplitude waveform can be shown in real time, thus the expiratory phase of patient, inspiratory phase and balance period phase can be obtained accurately.
2. exposure control instrument for X-ray chest photography according to claim 1, is characterized in that institute's pressure bladder is with carrying out by external inflation device the gas tube inflated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110124999.7A CN102151139B (en) | 2011-05-16 | 2011-05-16 | Exposure control instrument for X-ray chest photography |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110124999.7A CN102151139B (en) | 2011-05-16 | 2011-05-16 | Exposure control instrument for X-ray chest photography |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102151139A CN102151139A (en) | 2011-08-17 |
| CN102151139B true CN102151139B (en) | 2015-09-30 |
Family
ID=44433043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110124999.7A Expired - Fee Related CN102151139B (en) | 2011-05-16 | 2011-05-16 | Exposure control instrument for X-ray chest photography |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102151139B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101967664B1 (en) * | 2017-02-21 | 2019-04-11 | 주식회사 더굳인터내셔널 | Protector for photographing a medical image |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100509083C (en) * | 2005-01-31 | 2009-07-08 | 重庆微海软件开发有限公司 | Method and device for controlling image synchronization utilizing respiratory signal |
| CN100508890C (en) * | 2005-03-01 | 2009-07-08 | 马越 | X-ray machine |
| US7678063B2 (en) * | 2006-01-06 | 2010-03-16 | Mayo Foundation For Medical Education And Research | Motion monitor system for use with imaging systems |
| CN200963141Y (en) * | 2006-01-10 | 2007-10-24 | 王延明 | Automatic breath holding exposure device for X-ray production apparatus |
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2011
- 2011-05-16 CN CN201110124999.7A patent/CN102151139B/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN102151139A (en) | 2011-08-17 |
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| CF01 | Termination of patent right due to non-payment of annual fee |