CN103356215B - Portable compound scan imaging digital X-ray machine - Google Patents
Portable compound scan imaging digital X-ray machine Download PDFInfo
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- CN103356215B CN103356215B CN201310291103.3A CN201310291103A CN103356215B CN 103356215 B CN103356215 B CN 103356215B CN 201310291103 A CN201310291103 A CN 201310291103A CN 103356215 B CN103356215 B CN 103356215B
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Abstract
Portable compound scan imaging digital X-ray machine, it is characterized in that the detector of this device adopts linear array X-ray detector, and adopt the method for compound scan imaging, bulb and linear array X-ray detector is driven to scan by scan module and drive rod, the grid in bulb and linear array X-ray detector is driven to carry out micro scanning by grid motion motor and detector motion stepping motor synchronous, realize on a large scale, high-resolution imaging.The present invention compared with prior art, expand perspective and photographic imagery scope, areas imaging is maximum reaches 1200mm, with low-grade, low-cost detector, just the image effect same with high-grade detector can be obtained, and the weight saving of device, portable performance improves, and power consumption and manufacturing cost reduce.
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 conventional fluoroscopic apparatus of biological tissue's form inspection to material penetration and 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.; Mounting means mainly contains fixed, portable and portable three kinds.Roentgenoscope is grouped into primarily of X-ray generating portion, X-ray detection part, assisted movement part and exposure control unit, wherein development experience film, CR (computed radiography), CCD type DR (having image intensifier), TFT type DR (without the image intensifier direct imaging) four-stage of X-ray detection X part, stride forward to without image intensifier direct imaging x-ray imaging direction at present.Compared with traditional X-ray ray machine, digital X-ray machine (DigitalRadiography) has that radiation dose is little, memory property good, film making speed is fast, resolution comparatively advantages of higher, is radioscopy imaging device future thrust.Fixed and mobile type digital X-ray machine application at present becomes basically universal, and portable digital X-ray machine is also in constantly researching and developing.Portable digital X-ray machine occasion beyond the hospitals such as the qualification of vehicle accident traumatic condition, illicit drugs inspection, field medical has extensive use.
As shown in Figure 1, portable digital X-ray machine forms primarily 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 entering image intensifier 3 after human body 2, convert electronic image to through detector 4 again, deliver to computer and display 5 shows.
For adopting the digital X-ray machine of the detector directly X-ray being converted to electronic image there is no image intensifier 3, only has detector 4.As shown in Figure 2, bulb 1, detector 4, computer and display 5, power supply 6 and pedestal 7 is mainly comprised.Pedestal 7 is a U-shaped support, bulb 1 is arranged on one end of pedestal 7, and detector 4 is connected with computer and display 5, is installed on the other end of pedestal 7 together, and the optical axis of bulb is perpendicular to detector 4 photosurface Qie Guoqi center, 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, Problems existing is that areas imaging is less, within general diameter 50mm, maximumly be no more than 100mm, can only check the pockets such as limbs in adults time medical, serviceability can not meet clinical requirement.
Summary of the invention
For the technological deficiency that existing Portable X-ray machine areas imaging is little, 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 selects linear array X-ray detector as imageing sensor, doing on one-dimensional scanning basis obtaining a width subimage perpendicular to linear array detector detection identical permutation direction, then do along detection identical permutation direction and carry out one-dimensional scanning again after amplitude is less than the small translation of detector centre-to-centre spacing and obtain some subimages, finally by signal processing, all subimages are pressed 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 motor, grid, grid motion motor, it is characterized in that two guide post levels are installed on the position on two long limits of examinating couch and are parallel to each other, be installed on scan module in examinating couch and drive rod parallel with two guide posts.Tube stand is in vertically putting and 90-degree rotation U-shaped, and its upper and lower straight flange is relative, and lower straight flange to be arranged on two guide posts and vertical with guide post, and can do reciprocating linear motion under the driving of scan module and drive rod.The upper straight flange of U-shaped tube stand is provided with bulb, is provided with detector in the lower straight flange of U-shaped tube stand, and detector adopts linear array X-ray detector.Bulb is relative with linear array X-ray detector and the optical axis of bulb detects the photosurface of unit perpendicular to 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 radiation exit place of bulb, and grid motion motor is fixedly connected with one end of grid, and grid can be driven to do reciprocating linear motion.Detector motion motor is installed in the lower straight flange of U-shaped tube stand, is fixedly connected with one end of linear array X-ray detector, and linear array X-ray detector can be driven to do reciprocating linear motion.Grid and linear array X-ray detector do straight reciprocating motion along detecting identical permutation direction, the position of each printing opacity aperture on grid and the detection unit one_to_one corresponding of size and 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 linear array X-ray detector is connected with computer and display.Computer and display by interface circuit gated sweep motor and drive rod, detector motion motor, the motion of grid motion motor respectively, and control high tension generator work.After computer and display setting sweep limits, sweep mechanism and micro scanning mechanism carry out moving sweep according to setting value, the electronic image that each swash width obtains is delivered to computer and display by linear array X-ray detector, carries out storing and showing after according to actual position via carrying out correcting and restore arrangement process by computer and display.
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 to scan position, enter scanning process: scan module and drive rod rotate, and drive ball pipe holder rectilinear motion, makes linear array X-ray detector move along guide post together with bulb, scan; Three, micro scanning is carried out: after a single direction stroke terminates, the linear array X-ray detector of micro scanning part, grid are respectively under detector motion motor and grid motion step motor drive, be synchronized with the movement precalculated position keep motionless, then scan components back moves according to the kinematic parameter of lastrow journey, completes the scanning of second stroke; Four, later scanning the like, generally scan 2 ~ 4 width and synthesize a width, specifically determine according to detection unit's centre-to-centre spacing of linear array X-ray detector.
Compared with prior art, the present invention has the following advantages:
One, perspective and photographic imagery scope is expanded.Existing portable digital X-ray machine areas imaging only has 50mm, is maximumly no more than 100mm, and compound scan imaging digital X-ray machine areas imaging of the present invention is maximum reaches 1200mm, differs 10 times, makes Polaroid examination scope wider.
Two, device fabrication cost is reduced.Owing to selecting linear array detector, manufacturing cost greatly reduces compared with planar array detector.
Three, device structure weight is alleviated.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, improve image resolution ratio.Although the linear array detector centre-to-centre spacing (resolution) selected is not high, obtain high-definition picture equally by compound scan imaging technique, namely use low grade, low-cost detector, obtain 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.
Accompanying drawing explanation
Fig. 1 is 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 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 modules and drive rod, 13. tube stands, 14. detector motion motors, 15. grids, 16. grid motion motors.
Detailed description of the invention
Below in conjunction with accompanying drawing, by embodiment, the present invention is described in further detail.
Embodiment one:
Shown in Fig. 3 and Fig. 4 is the situation of portable compound scan imaging digital X-ray machine of the present invention in 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 motor 14, grid 15, grid motion motor 16, it is characterized in that two guide post 11 levels are installed on the position on two long limits of examinating couch 9 and are parallel to each other, be installed on scan module in examinating couch and drive rod 12 parallel with two guide posts.Tube stand 13 is in vertically putting and 90-degree rotation U-shaped, and its upper and lower straight flange is relative, and lower straight flange to be arranged on two guide posts and vertical with guide post, and can do reciprocating linear motion under the driving of scan module and drive rod.The upper straight flange of U-shaped tube stand is provided with bulb 1, in the lower straight flange of U-shaped tube stand, linear array X-ray detector 4 is installed, bulb is relative with linear array X-ray detector and the optical axis of bulb detects the photosurface of unit perpendicular to 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, perpendicular to the orientation of linear array X-ray detector detection unit, realizes the scanning to human body 2 foot directions.
Grid 15 and grid motion motor 16 are installed in bulb 1, and grid is installed on the radiation exit place of bulb, grid motion motor is fixedly connected with one end of grid, and grid can be driven to do reciprocating linear motion along the upper straight flange direction of U-shaped tube stand.Detector motion motor 14 is installed in the lower straight flange of U-shaped tube stand 13, is fixedly connected with one end of linear array X-ray detector 4, and linear array X-ray detector 4 can be driven to do reciprocating linear motion along the lower straight flange direction of U-shaped tube stand.Grid and linear array X-ray detector are along detecting identical permutation direction linear reciprocating motion, the position of each printing opacity aperture on grid and the detection unit one_to_one corresponding of size and linear array X-ray detector, bulb and human body 2 motionless, motion step number is determined by detector operating frequency, centre-to-centre spacing and target image resolution, often walk micrometric displacement distance and equal detector centre-to-centre spacing divided by step number, realize the micro scanning to human body left and right directions.
Compound scan imaging process of the present invention is:
(i) start preheating and initialization, make tube stand 13, linear array X-ray detector 4, grid 15 reset.
(ii) human body 2 is lain on the back on examinating couch, and scan module and drive rod 12 rotate, drive ball pipe holder rectilinear motion, makes bulb 1 move to human body along guide post together with linear array X-ray detector 4 and looks into region in advance and carry out scanning perspective imaging.During scanning motion, bulb 1 and the motion of linear array X-ray detector 4 component synchronization, move distance is not less than 1.8 times of linear array X-ray detector 4 width.
(iii) after a single direction stroke terminates, 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 grid motion motor 16 drive respectively, grid 15 aperture position and size and linear array X-ray detector 4 detect first one_to_one corresponding, bulb and human body motionless, motion step number is by linear array X-ray detector operating frequency, centre-to-centre spacing and target image resolution are determined, often walk micrometric displacement distance and equal 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 the like, generally scan 2 ~ 4 width and synthesize a width scanning perspective imaging.This device energy automatic detection the KV number adjusted needed for perspective imaging and mA number, operator press exposure button and complete perspective imaging.
Embodiment two:
Portable compound scan imaging digital X-ray machine of the present invention also can be used for examination state of standing.Portable compound scan imaging digital X-ray machine 90-degree rotation is placed, make human body stand on U-shaped tube stand 13 U-shaped in, between bulb 1 and linear array X-ray detector 4, can scanning perspective imaging be carried out, as shown in Figure 4.Scanning perspective imaging process is identical with embodiment one.
Linear array X-ray detector 4 of the present invention select exportable digital signal, length and adult thoracic cavity width quite, below centre-to-centre spacing 1.6mm, more than frame frequency 300Hz, CdWO that detectivity (sensitivity) is higher
4or CsI linear array detector.The selecting of bulb 1 will match with linear array X-ray detector and penetration depth exceedes the thickness in thoracic cavity of being grown up, and selects the high frequency or hyperfrequency high tension generator that match with bulb.Scan module and drive rod 12 will design and produce according to the penetration depth of bulb 1, scanning speed that the detectivity of linear array X-ray detector 4 calculates.Grid 15 will make according to the detection unit quantity of linear array X-ray detector, profile design.Tube stand 13 will design and produce according to the geometrical relationship of bulb and linear array X-ray detector, and is fixed on tube stand by the two, and bulb is corresponding with 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. a portable compound scan imaging digital X-ray machine, comprise 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 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, be installed on scan module in examinating couch and drive rod (12) parallel with two guide posts; Tube stand is (13) in vertically putting and 90-degree rotation U-shaped, and its upper and lower straight flange is relative, and lower straight flange to be arranged on two guide posts and vertical with guide post, and can do reciprocating linear motion under the driving of scan module and drive rod; (1) the upper straight flange of U-shaped tube stand is provided with bulb, is provided with detector (4) in the lower straight flange of U-shaped tube stand, and detector adopts linear array X-ray detector; Bulb is relative with linear array X-ray detector and the optical axis of bulb detects the photosurface of unit perpendicular to linear array X-ray detector, and crosses the center of photosurface; Grid (15) and grid motion motor be (16) installed in bulb, and grid is installed on the radiation exit place of bulb, and grid motion motor is fixedly connected with one end of grid, and grid can be driven to do reciprocating linear motion; (14) detector motion motor is installed in the lower straight flange of U-shaped tube stand, is fixedly connected with one end of linear array X-ray detector, and linear array X-ray detector can be driven to do reciprocating linear motion; Grid and linear array X-ray detector do straight reciprocating motion along detecting identical permutation direction, the position of each printing opacity aperture on grid and the detection unit one_to_one corresponding of size and linear array X-ray detector.
2. according to portable compound scan imaging digital X-ray machine according to 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), detector motion motor (14), grid motion motor (16) and high tension generator be connected, (1) high tension generator is connected with bulb, and (4) linear array X-ray detector is connected with computer and display; After computer and display setting sweep limits value, computer and display are by interface circuit gated sweep motor and drive rod, detector motion motor, the motion of grid motion motor respectively, and control high tension generator work, carry out moving sweep; The electronic image that each swash width obtains is delivered to computer and display by linear array X-ray detector, carries out storing and showing after according to actual position via carrying out correcting and restore arrangement process by computer and display.
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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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| 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 |
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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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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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)
| Title |
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| 《便携式复合扫描成像DR研究》;秦志强;《医疗卫生装备》;20131031;第34卷(第10期);第6-8页 * |
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