CN103356215A - Portable composite scanning imaging digital x-ray machine - Google Patents
Portable composite scanning imaging digital x-ray machine Download PDFInfo
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- CN103356215A CN103356215A CN2013102911033A CN201310291103A CN103356215A CN 103356215 A CN103356215 A CN 103356215A CN 2013102911033 A CN2013102911033 A CN 2013102911033A CN 201310291103 A CN201310291103 A CN 201310291103A CN 103356215 A CN103356215 A CN 103356215A
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Abstract
The invention relates to a portable composite scanning imaging digital X-ray machine. The portable composite scanning imaging digital X-ray machine is characterized in that a detector of the device adopts a linear array X-ray detector and adopts a composite scanning imaging method; a scanning motor and a driving rod drive a bulb tube to perform scanning with the linear array X-ray detector; and a filter line grid motion stepping motor and a detector motion stepping motor synchronously drive a filter line grid in the bulb tube to perform microscanning with the linear array X-ray detector, so that large-range and high-resolution imaging is realized. Compared with the prior art, the perspective and photographic imaging range is enlarged, the maximum of the imaging range can reach 1,200 mm; the image effect as same as that of a high-grade detector can be achieved by the low-grade and cheap detector, the weight of the device is reduced, the portability is improved, and the power consumption and the manufacturing cost are reduced.
Description
Technical field
The invention belongs to radioscopy and electrophotographic image forming apparatus field, be specifically related to a kind of portable compound scan imaging digital X-ray machine.
Technical background
Medical X ray machine is that a kind of X ray that utilizes carries out the fluoroscopic apparatus commonly used of biological tissue's form inspection to material penetration and density absorption difference, its application form mainly contains common X-ray machine, mobile X-ray machine, breast X-ray machine, digital X-ray machine (CR, DR, DSA etc.), dental radiography unit etc.; That mounting means mainly contains is fixed, portable and portable three kinds.Part, X-ray detection part, assisted movement part and exposure control section mainly occur by X ray and form in roentgenoscope, wherein the development experience of X-ray detection X part film, CR(computed radiography), CCD type DR (image intensifier is arranged), TFT type DR(be without the image intensifier direct imaging) four-stage, at present to striding forward without image intensifier direct imaging x-ray imaging direction.With the traditional X-ray ray machine, compare, digital X-ray machine (Digital Radiography) has that radiation dose is little, memory property good, film making speed is fast, resolution is than advantages of higher, is radioscopy imaging device future thrust.Fixed and mobile type digital X-ray machine application at present becomes basically universal, and the portable digital X-ray machine is also in constantly researching and developing.Portable digital X-ray machine occasion beyond the hospitals such as the evaluation of vehicle accident traumatic condition, illicit drugs inspection, field medical treatment has extensive use.
As shown in Figure 1, the portable digital X-ray machine mainly is comprised of bulb 1, image intensifier 3, detector 4, computer and display 5, the image-forming principle of digital X-ray machine is, the X ray that bulb 1 sends converts visible images to through after human body 2, entering image intensifier 3, convert electronic image to through detector 4 again, deliver to computer and display 5 shows.
For adopting the digital X-ray machine that directly X ray is converted to the detector of electronic image there is no image intensifier 3, only has detector 4.As shown in Figure 2, mainly comprise bulb 1, detector 4, computer and display 5, power supply 6 and pedestal 7.Pedestal 7 is a U-shaped support, bulb 1 is arranged on an end of pedestal 7, and detector 4 is connected with computer and display 5, is installed on together the other end of pedestal 7, and the optical axis of bulb is perpendicular to detector 4 photosurface Qie Guoqi centers, and power supply 6 is connected with pedestal 7 by wire.Existing portable digital X-ray machine major advantage is that volume is little, lightweight, low in energy consumption, portable performance is good, the problem existed is that areas imaging is less, in general diameter 50mm, maximum is no more than 100mm, can only check the pockets such as limbs in adults when medical, serviceability can not meet clinical requirement.
Summary of the invention
For the existing little technological deficiency of Portable X-ray machine areas imaging, the invention provides a kind of portable compound scan imaging digital X-ray machine, this device portable performance is good, and areas imaging is large, and resolution is high.
Portable compound scan imaging digital X-ray machine of the present invention, its operation principle is to select the linear array X-ray detector as imageing sensor, doing on the one-dimensional scanning basis and obtaining a width subimage perpendicular to linear array detector detection identical permutation direction, then do after the small translation that amplitude is less than detector centre-to-centre spacing and carry out again one-dimensional scanning and obtain some subimages along surveying the identical permutation direction, finally by signal processing, all subimages are pressed to the real space position synthesis, obtain the image that areas imaging is large, resolution is high.
Portable compound scan imaging digital X-ray machine of the present invention, comprise bulb, high tension generator, detector, interface circuit, computer and display, power supply, bed board, examinating couch, supporting leg, guide post, scan module and drive rod, tube stand, detector motion progress motor, grid, grid motion motor, it is characterized in that two guide post levels are installed on two of examinating couch and grow the position on limits and be parallel to each other, the scan module and the drive rod that are installed in examinating couch are parallel with two guide posts.Tube stand is vertically to be put and 90-degree rotation U-shaped, and its upper and lower straight flange is relative, and lower straight flange is arranged on two guide posts and is vertical with guide post, and can under the driving of scan module and drive rod, do reciprocating linear motion.The upper straight flange of U-shaped tube stand is equipped with bulb, in the lower straight flange of U-shaped tube stand, detector is installed, and detector adopts the linear array X-ray detector.Bulb and optical axis bulb relative with the linear array X-ray detector surveyed first photosurface perpendicular to the linear array X-ray detector, and crosses the center of photosurface.Grid and grid motion motor are installed in bulb, and grid is installed on the ray exit of bulb, and grid motion motor is fixedly connected with an end of grid, can drive grid to do reciprocating linear motion.The detector motion motor is installed in the lower straight flange of U-shaped tube stand, with an end of linear array X-ray detector, is fixedly connected with, and can drive the linear array X-ray detector to do reciprocating linear motion.Grid and linear array X-ray detector are done straight reciprocating motion along surveying the identical permutation direction, and the position of each the printing opacity aperture on grid and size are corresponding one by one with the detection unit of linear array X-ray detector.
Control principle of the present invention is: computer and display are connected with interface circuit, interface circuit is connected with scan module and drive rod, detector motion motor, grid motion motor and high tension generator respectively, high tension generator is connected with bulb, and the linear array X-ray detector is connected with computer and display.Computer and display are distinguished gated sweep motor and drive rod, detector motion motor, the motion of grid motion motor by interface circuit, and control high tension generator work.After setting sweep limits by computer and display, sweep mechanism and micro scanning mechanism are according to the setting value scanning of moving, the electronic image that the linear array X-ray detector obtains each swash width is delivered to computer and display, by computer and display, is according to actual position via proofreaied and correct and is restored after arrangement is processed and stored and show.
Compound scan imaging process of the present invention is: one, initialize: make tube stand, linear array X-ray detector, grid get back to original position; Two, determine the scanning position, enter scanning process: scan module and drive rod rotation, drive ball pipe holder rectilinear motion moves the linear array X-ray detector together with bulb along guide post, scanned; Three, carry out micro scanning: after a single direction stroke finishes, the linear array X-ray detector of micro scanning part, grid are respectively under detector motion motor and grid motion step motor drive, precalculated position keep motionless is synchronized with the movement, then scan components back moves according to the kinematic parameter of lastrow journey, completes the scanning of second stroke; Four, later scanning, generally scan the synthetic width of 2～4 width, specifically according to detection unit's centre-to-centre spacing of linear array X-ray detector, determines.
Compared with prior art, the present invention has the following advantages:
One, perspective and photographic imagery scope have been enlarged.Existing portable digital X-ray machine areas imaging only has 50mm, and maximum is no more than 100mm, and compound scan imaging digital X-ray machine areas imaging maximum of the present invention can reach 1200mm, differs 10 times, makes Polaroid examination scope wider.
Two, reduced the device fabrication cost.Owing to selecting linear array detector, compare manufacturing cost with planar array detector and greatly reduce.
Three, alleviated device structure weight.Owing to selecting linear array detector and small-sized bulb, supporting mechanism, motion and high tension generator weight alleviate greatly, and portable performance improves.
Four, improved image resolution ratio.Although the linear array detector centre-to-centre spacing (resolution) of selecting is not high, by the compound scan imaging technique, has obtained equally high-definition picture, uses low grade, low-cost detector, has obtained the image effect same with high-grade detector.
Five, owing to selecting linear array detector, small-power bulb and high-frequency and high-voltage generator, power consumption reduces greatly.
The accompanying drawing explanation
Fig. 1 is the X-ray machine imaging schematic diagram;
Fig. 2 is portable digital X-ray machine structural representation;
Fig. 3 is the structural representation of portable compound scan imaging digital X-ray machine;
Fig. 4 is the micro scanning principle schematic;
Fig. 5 is the control principle block diagram of portable compound scan imaging digital X-ray machine.
In figure, 1. bulb, 2. human body, 3. image intensifier, 4. detector, 5. computer and display, 6. power supply, 7. pedestal, 8. bed board, 9. examinating couch, 10. supporting leg, 11. guide posts, 12. scan module and drive rod, 13. tube stands, 14. detector motion progress motors, 15. grid, 16. grid motion motors.
The specific embodiment
Below in conjunction with accompanying drawing, by embodiment, the present invention is described in further detail.
Embodiment mono-:
Shown in Fig. 3 and Fig. 4 is the situation of portable compound scan imaging digital X-ray machine of the present invention at flat sleeping examination state.The present invention includes bulb 1, high tension generator, detector 4, interface circuit, computer and display 5, power supply 6, bed board 8, examinating couch 9, supporting leg 10, guide post 11, scan module and drive rod 12, tube stand 13, detector motion progress motor 14, grid 15, grid motion motor 16, it is characterized in that two guide post 11 levels are installed on two of examinating couch 9 and grow the position on limits and be parallel to each other, the scan module and the drive rod 12 that are installed in examinating couch are parallel with two guide posts.Tube stand 13 is vertically to be put and 90-degree rotation U-shaped, and its upper and lower straight flange is relative, and lower straight flange is arranged on two guide posts and is vertical with guide post, and can under the driving of scan module and drive rod, do reciprocating linear motion.The upper straight flange of U-shaped tube stand is equipped with bulb 1, in the lower straight flange of U-shaped tube stand, linear array X-ray detector 4 is installed, bulb and optical axis bulb relative with the linear array X-ray detector surveyed first photosurface perpendicular to the linear array X-ray detector, and crosses the center of photosurface.Scan module and drive rod drive U-shaped tube stand to do reciprocating linear motion, and the direction of motion is surveyed first orientation perpendicular to the linear array X-ray detector, realize the scanning to 2 foot directions of human body.
Compound scan imaging process of the present invention is:
(i) start shooting preheating and initialization, reset tube stand 13, linear array X-ray detector 4, grid 15.
(ii) human body 2 is lain on the back on examinating couch, scan module and drive rod 12 rotations, and drive ball pipe holder rectilinear motion, make bulb 1 move to human body along guide post together with linear array X-ray detector 4 and look in advance zone and scanned perspective imaging.During scanning motion, bulb 1 and the 4 component synchronization motions of linear array X-ray detector, move distance is not less than 1.8 times of linear array X-ray detector 4 width.
(iii) after a single direction stroke finishes, the linear array X-ray detector 4 of micro scanning part, grid 15 is edge detection identical permutation direction rectilinear motion under detector motion motor 14 and 16 drivings of grid motion motor respectively, grid 15 aperture position and size are corresponding one by one with linear array X-ray detector 4 detection units, bulb and human body are motionless, the motion step number is by linear array X-ray detector operating frequency, centre-to-centre spacing and target image resolution are determined, every step micrometric displacement distance equals linear array X-ray detector centre-to-centre spacing divided by step number, then scan components back moves according to the kinematic parameter of lastrow journey, complete the scanning of second stroke.
(iv) later scanning, generally scan the synthetic width scanning perspective imaging of 2～4 width.This device energy automatic detection is also adjusted the required KV number of perspective imaging and mA number, and operator press exposure button and complete perspective imaging.
Embodiment bis-:
Portable compound scan imaging digital X-ray machine of the present invention also can be used for the examination state of standing.Portable compound scan imaging digital X-ray machine 90-degree rotation is placed, made that human body stand in U-shaped tube stand 13 U-shaped, between bulb 1 and linear array X-ray detector 4, can be scanned perspective imaging, as shown in Figure 4.Scanning perspective imaging process is identical with embodiment mono-.
Linear array X-ray detector 4 of the present invention is selected the CdWO that exportable digital signal, length and adult thoracic cavity width are suitable, centre-to-centre spacing 1.6mm is following, frame frequency 300Hz is above, detectivity (sensitivity) is higher
4Or CsI linear array detector.The selecting of bulb 1 will be complementary with the linear array X-ray detector and penetration depth surpasses the thickness in adult thoracic cavity, and selects high frequency or the hyperfrequency high tension generator be complementary with bulb.Scan module and drive rod 12 will design and produce according to the penetration depth of bulb 1, the scanning speed that the detectivity of linear array X-ray detector 4 calculates.Grid 15 will design and produce according to detection unit quantity, the shape of linear array X-ray detector.Tube stand 13 will design and produce according to the geometrical relationship of bulb and linear array X-ray detector, and the two is fixed on tube stand, and bulb is corresponding with the linear array X-ray detector.The micro scanning step number that detector motion motor 14 and grid motion motor 16 will calculate according to linear array X-ray detector centre-to-centre spacing and target image resolution designs and produces.
Claims (2)
1. portable compound scan imaging digital X-ray machine of the present invention, comprise that bulb (1), high tension generator, detector (4), interface circuit, computer and display are (5), power supply (6), bed board (8), examinating couch (9), supporting leg (10), guide post (11), scan module and drive rod are (12), tube stand (13), detector motion progress motor (14), grid (15), grid motion motor (16), it is characterized in that: two guide posts (11) level are installed on the position on examinating couch two long limits (9) and are parallel to each other, the scan module and the drive rod that are installed in examinating couch are (12) parallel with two guide posts, (13) tube stand is vertically puts and 90-degree rotation U-shaped, and its upper and lower straight flange is relative, and lower straight flange is arranged on two guide posts and is vertical with guide post, and can under the driving of scan module and drive rod, do reciprocating linear motion, (1) the upper straight flange of U-shaped tube stand is equipped with bulb, in the lower straight flange of U-shaped tube stand, detector is installed (4), and detector adopts the linear array X-ray detector, bulb and optical axis bulb relative with the linear array X-ray detector surveyed first photosurface perpendicular to the linear array X-ray detector, and crosses the center of photosurface, (15) grid reaches grid motion motor and (16) is installed in bulb, and grid is installed on the ray exit of bulb, and grid motion motor is fixedly connected with an end of grid, can drive grid to do reciprocating linear motion, (14) the detector motion motor is installed in the lower straight flange of U-shaped tube stand, with an end of linear array X-ray detector, is fixedly connected with, and can drive the linear array X-ray detector to do reciprocating linear motion, grid and linear array X-ray detector are done straight reciprocating motion along surveying the identical permutation direction, and the position of each the printing opacity aperture on grid and size are corresponding one by one with the detection unit of linear array X-ray detector.
2. according to portable compound scan imaging digital X-ray machine claimed in claim 1, it is characterized in that: (5) computer and display are connected with interface circuit, interface circuit respectively with scan module and drive rod (12), the detector motion motor (14), grid motion motor (16) and high tension generator be connected, (1) high tension generator is connected with bulb, and (4) the linear array X-ray detector is connected with computer and display; After setting the sweep limits value by computer and display, computer and display are distinguished gated sweep motor and drive rod, detector motion motor, the motion of grid motion motor by interface circuit, and the work of control high tension generator, the scanning of moving; The electronic image that the linear array X-ray detector obtains each swash width is delivered to computer and display, by computer and display, is according to actual position via proofreaied and correct and is restored after arrangement is processed and stored and show.
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| CN201310291103.3A CN103356215B (en) | 2013-07-11 | 2013-07-11 | Portable compound scan imaging digital X-ray machine |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104764757A (en) * | 2015-04-03 | 2015-07-08 | 燕山大学 | Real-time X-ray imaging system with micro scanning |
| CN105615905A (en) * | 2014-10-29 | 2016-06-01 | 上海康达医学科技有限公司 | Digital breast X-ray machine |
| CN111822377A (en) * | 2020-08-13 | 2020-10-27 | 深圳市中润精机科技有限公司 | A micro-drill automatic length measuring machine |
Citations (3)
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| CN2879976Y (en) * | 2006-02-24 | 2007-03-21 | 于红林 | Digital X ray vertebral column imaging examination apparatus |
| CN201248715Y (en) * | 2008-07-31 | 2009-06-03 | 于红林 | Portable X-ray machine |
| CN102151138A (en) * | 2011-03-30 | 2011-08-17 | 北京航天中兴医疗系统有限公司 | Digital gynaecological radiography inspector and gynaecological radiography method |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2879976Y (en) * | 2006-02-24 | 2007-03-21 | 于红林 | Digital X ray vertebral column imaging examination apparatus |
| CN201248715Y (en) * | 2008-07-31 | 2009-06-03 | 于红林 | Portable X-ray machine |
| CN102151138A (en) * | 2011-03-30 | 2011-08-17 | 北京航天中兴医疗系统有限公司 | Digital gynaecological radiography inspector and gynaecological radiography method |
Non-Patent Citations (1)
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| 秦志强: "《便携式复合扫描成像DR研究》", 《医疗卫生装备》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105615905A (en) * | 2014-10-29 | 2016-06-01 | 上海康达医学科技有限公司 | Digital breast X-ray machine |
| CN104764757A (en) * | 2015-04-03 | 2015-07-08 | 燕山大学 | Real-time X-ray imaging system with micro scanning |
| CN111822377A (en) * | 2020-08-13 | 2020-10-27 | 深圳市中润精机科技有限公司 | A micro-drill automatic length measuring machine |
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