CN201197713Y - Structure of portable type multifunctional micro-dose medical CT machine - Google Patents
Structure of portable type multifunctional micro-dose medical CT machine Download PDFInfo
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- CN201197713Y CN201197713Y CNU2008201161814U CN200820116181U CN201197713Y CN 201197713 Y CN201197713 Y CN 201197713Y CN U2008201161814 U CNU2008201161814 U CN U2008201161814U CN 200820116181 U CN200820116181 U CN 200820116181U CN 201197713 Y CN201197713 Y CN 201197713Y
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Abstract
The utility model discloses a portable multi-functional micro-dose medical CT machine structure which comprises a scanning head, a scanning movement machine, a measurement control and image processing system, a hospital bed, and other auxiliary systems; the portable multi-functional micro-dose medical CT machine structure is characterized in that the scanning movement machine consists of a base which can move forwards and backwards, and a suspensio arm which can lift and descend as well as rotate and is arranged on the base; a three-dimensional CT scanning movement can be realized; the front end of the suspensio arm is provided with the scanning head which consists of an X-ray source and a front collimator thereof, multiple rows detector arrays and multiple rows of back collimators thereof; and the X-ray source and the multiple rows of detector arrasy are in the same side of an checked patient and forms a Compton back-scattering geometry structure with the body parts of the checked patient. The utility model has the advantages of ingenious design, light weight, small size, extremely small radiation dose, integrated function, and advanced performance index.
Description
Technical field
This utility model is the multi-functional little dosage Medical CT machine of a kind of novel and portable formula, more particularly be based on Medical C BS (CBS-ComptonBackscatter Scanning) the CT machine structure of the compton effect,scattering in X ray and the matter interaction, it is in light weight, volume is little, radiation dose is minimum, multiple functional, performance indications advanced person, do not need the precise positioning bed, can be used for ward and field condition, is to medically existing based on the routine of X ray transmission principle and the innovation and the breakthrough of spiral CT.
Background technology
From in JIUYUE, 1971 in the world first Medical CT scanner unit install and be used for clinical experiment, the medicine CT machine has experienced the evolution of five generations so far, at present, existing multi-detector CT machine and electron beam ct machine make the clinical application range of CT more extensive.But at present there are the following problems based on the medicine CT machine of X ray transmission principle:
(1) costs an arm and a leg.
(2) complex structure, volume and weight is excessive.Machine room takes up an area of 20～30 square meters, and weight surpasses 1 ton, and operation inconvenience is not easy to use before sick bed and on-the-spot the use.
(3) radiation dose is big.Present medicine CT checks that roentgendosis is big, and is bigger to human body harm, and often patient and ordinary people to this and unclear.
(4) each waits to improve to resolution.A very important shortcoming of spiral CT is the broadening of bed thickness response curve at present, and longitudinal resolution is descended, and is badly in need of improving the longitudinal resolution of scanning, and promptly each in volume scan is to the same problem of resolution.
The utility model content
The purpose of this utility model provide a kind of novel P/C than high, in light weight, volume is little, be convenient to move, the structure of portable multi-functional little dosage Medical CT machine that radiation dose is little, multiple functional.Its based on principle be not the X ray transmission, but compton backscattering has solved above-mentioned four problems of present medicine CT machine.
The technical solution of the utility model is as follows:
The structure of portable multi-functional little dosage Medical CT machine, comprise probe, scanning motion machinery, observing and controlling and image processing system, and aid system such as sick bed, it is characterized in that described scanning motion machinery is by base, the arm that is installed on the liftable that can move forward and backward on the base and rotation is formed, can realize the three-D CT scanning motion, the arm front end is equipped with probe, and described probe is by x-ray source and preceding collimator thereof, and multi-detector array and many rows back collimator array thereof are formed, described x-ray source and multi-detector array are positioned at the same side that is examined the patient, and are examined the patient's body position and constitute compton backscattering geometry structure.
The direction of collimator is that the collimator direction is that the angle that scattered-out beam enters between the direction of detector array is that Compton scattering angle θ can regulate in 120 °～150 ° scopes behind primary beam direction of advance and the detector array before the X-ray production apparatus.
But described arm is a stretching structure, and described movable pedestal is to realize by the universal joint that is installed under the base.
Described multi-detector array tellurium zinc cadmium CdZnTe or rare-earth oxidation pottery coupling light electric diode or multianode position sensitive photo-multiplier tube array.
This utility model is divided into four parts: first part is a probe, contain x-ray source and preceding collimator thereof, multi-detector array and many rows back collimator arrays have an angle between the two, and are examined the patient's body position and constitute CBS geometry structure; Second part is scanning motion machinery, contains column, screw rod, arm and sleeve pipe thereof, universal joint, probe support and light translation track etc., can realize the three-D CT scanning motion; The 3rd part is observing and controlling and image processing system, contains main frame, operation keyboard (touch screen), adopts biography electronic system, power supply, image workstation, high resolution display, picture archiving and transmission system (PACS) and laser camera etc.; The 4th part is auxiliary facility, contains ordinary hospital bed and four-wheel go-cart etc.
The utility model has the advantages that:
(1) delicate structure, small-sized light weight, conveniently moving can be used for ward and field condition.
(2) multiple functional, flexible operation.
(3) based on the CBS principle, radiation dose is minimum, much smaller than the radiation dose of spiral CT X ray transmission scan.
(4) but do not need the location bed of high-precision translation lifting, only need the ordinary hospital bed or the stretcher that can change the inclination angle, can allow the patient lie low down just.
(5) CT scan of different angle can be realized, and three-D CT scanning can be easily realized.
(6) P/C is than high.
Major technique feature of the present utility model is:
1, the structure that is based on CBS that adopts of this utility model, promptly x-ray source and multi-detector array be all in the same side of detected patient, and constitute CBS geometry with patient's check point.
2, the structure that is based on CBS of this utility model employing, angle theta before the X-ray production apparatus between the direction (being the primary beam direction of advance) of collimator and the back collimator direction (being the direction that scattered-out beam enters detector array) is the Compton scattering angle, when θ 〉=90 °, be called compton backscattering.The Compton scattering angle θ that this utility model adopts can regulate in 120 °～150 ° scopes.
3, scanning motion frame for movement of the present utility model is very flexible, uses universal joint, probe is rotated flexibly, so that scan from different orientation and inclination angle; Use the probe arm that the accurate dimension scale is arranged of automatically retractable, so that scan to the diverse location of (frontal axis or Y-axis) along Y; The screw rod that uses can rotate, probe not the time spent can be parked in the go-cart, in the time will working, just probe is forwarded to sick bed one side by screw rod; The screw rod that uses can automatic lifting, and accurate scale is arranged, so that make Z to scanning along Z to the differing heights of (dorsoventral axis or antero posterior axis); Use the four-wheel go-cart along the apron track translation, can make probe is that X moves to (sagittal axis or last lower shaft) along the human body length direction.Thereby realization three-D CT scanning.
4, the structure that is based on CBS of this utility model employing, but do not need the liftable location bed of high-precision translation, and as long as the ordinary hospital bed or the stretcher that can change the inclination angle.
5, the multi-detector array of this utility model employing is a solid probe high detection efficient, that volume is little, for example tellurium zinc cadmium (CdZnTe) or rare-earth oxidation pottery (or claiming scintillating ceramic) coupling light electric diode or multianode position sensitive photo-multiplier tube array.
6, of the present utility model adopting passes electronic system and mainly is made up of application-specific integrated circuit ASIC, analog-digital converter ADC, digital signal conveyer (photodiode receiving array), complicated programmable logic device (CPLD), embedded system (ARM10), interface circuit, power supply etc.
7, this utility model adopts the GPRS communication module, and digital picture is wirelessly transmitted to portable terminal (for example mobile phone), for expert consultation at a distance.
Description of drawings
Fig. 1 is this utility model population structure sketch map.
Fig. 2 surveys for this utility model and adopts electronics biography system block diagram.
The parts that label among the figure is represented are as follows:
1, Portable X-ray machine (carrying dc source)
2, X-ray production apparatus mounting bracket
3, preceding collimator
4, multi-detector array
5, collimator array behind many rows
6, multi-detector array mounting bracket
7, the X-ray beam of X-ray production apparatus emission
8, back scattering X-ray bundle
9, be the patient of CT examination
10, column
11, column mount pad (being fixed in the go-cart)
12, the rotating screw rod of liftable
13, scalable arm
14, arm sleeve pipe
15, universal joint
16, probe support
17, four-wheel go-cart
18, the four wheels of band brake
19, light translation track (the band scale)
20, the parking platform of probe (not time spent)
21, ordinary hospital bed or stretcher (can change the inclination angle)
22, coordinate system
23, step
24, operation keyboard or touch screen
25, the installing plate of operation keyboard or touch screen
26, be responsible for the microcomputer (main frame) that observing and controlling is used
27, high resolution display
28, adopt the biography electronic system
29, power supply cabinet (containing UPS)
30, laser camera
31, memory device
32、PACS
33, GPRS module
34, multichannel special IC (ASIC)
35, analog-digital converter ADC
36, central processing element (using programmable gate array FPGA)
37, embedded system (ARM10)
38, interface circuit
39, portable terminal (mobile phone)
40, image workstation
41, Dicom 3.0 interfaces
42, motor control module
43, camera control module
44, low-tension supply
The specific embodiment
Referring to Fig. 1, earlier light translation track 19 is dragged to the position that sick bed 21 sides are parallel to sick bed, the four wheels 18 of four-wheel go-cart 17 is shifted onto on the track 19, move to predetermined X to the position, be fixed on from column mount pad 11 and rise screw rod 12 the column 10 in the four-wheel go-cart 17 to higher height, checked patient 9 lies low on sick bed 21, screw rod 12 is rotated 180 ° of tops that probe support 16 moved on to patient 9, and fall screw rod 12 to the height of pressing close to patient 9, regulate the position of arm 13 then, adjust the orientation of universal joint 15 again, probe support 16 is placed suitable position, so far, the beginning CT scan: the first step is made Z to scanning, the height that the is about to screw rod 12 step pitch Δ Z that edges down, start X-ray production apparatus 1, the X ray of its emission is configured as X-ray beam 7 through preceding collimator 3, back scattering X-ray bundle 8 collimator array 5 after too much arranging that ray arrives certain position generation that is examined patient 9 arrives multi-detector arrays 4, by adopting the signal that passes electronic system 28 collection detectors 4 and sending main frame 26 to.Then, change the height Δ Z of screw rod once more, repeat, reach predetermined value scanning until the Z at this Y value place to the degree of depth and finish by this scan mode.Second step was made Y to scanning according to the needs of checking, was about to step pitch Δ Y of probe arm 13 elongations, repeated first step Z to scanning, and then extended a step pitch Δ Y, repeated first step Z to scanning, until Y to scanning predetermined Y to the position.The 3rd step, make X to scanning according to the needs of checking, i.e. mobile go-cart 17 on apron track 19, one by one step pitch Δ X repeat Z to Y to scanning, arrive predetermined X to the position until probe X to scanning.When three scanning directions are finished, rise screw rod 12, withdrawal arm 13, rotating screw bolt 12 is placed on probe support 16 on the parking platform 20.Turn off power supply 29, light translation track 19 is pushed in four-wheel go-cart 17.Prepare subtask down.
Referring to Fig. 2, back scattering X-ray bundle 8 enters multi-detector array 4 by many rows back collimator array 5, the signal of output is sent into special IC (ASIC) 34, the signal of telecommunication that multi-detector array 4 is exported amplifies, the low frequency high-frequency noise suppresses and level conversion, signal after will handling is subsequently sent into A-D converter ADC 35, finish the analog/digital conversion of analogue signal, the digital signal of output 12～16 bit resolutions carries out multichannel pulse amplitude analysis after the conversion.Then, send into central processing element---programmable gate array FPGA control processing circuit 36, according to the gain of the shape control amplifier of measured power spectrum and go up lower threshold value, determine the counting in certain scope in the needed power spectrum, and finish corresponding other control treatment functions.Then, data through above-mentioned processing are given embedded system 37 by dedicated bus, embedded system 37 is obtained by adopting and is passed the array formatted file that electronic system 28 provides, give respectively by interface circuit 38: (1) carries out the CT image reconstruction to main frame 26, and is shown by high resolution display 27; Be for further processing by the image workstation 40 that has Dicom3.0 again; (2), the CT view data is wirelessly transmitted to mobile phone 8 through GPRS module 33; (3) through camera control module 43, driving laser camera 30 is taken the CT image.
Claims (4)
1. the structure of portable multi-functional little dosage Medical CT machine, comprise probe, scanning motion machinery, observing and controlling and image processing system, and aid system such as sick bed, it is characterized in that described scanning motion machinery is by moving forward and backward base, the arm that is installed on liftable on the base and rotation is formed, can realize the three-D CT scanning motion, the arm front end is equipped with probe, and described probe is by x-ray source and preceding collimator thereof, and multi-detector array and many rows back collimator array thereof are formed, described x-ray source and multi-detector array are positioned at the same side that is examined the patient, and are examined the patient's body position and constitute compton backscattering geometry structure.
2. the structure of portable multi-functional little dosage Medical CT machine according to claim 1 is characterized in that the direction of collimator before the X-ray production apparatus is that the collimator direction is that the angle that scattered-out beam enters between the direction of detector array is that Compton scattering angle θ can regulate behind primary beam direction of advance and the detector array in 120 °～150 ° scopes.
3. the structure of portable multi-functional little dosage Medical CT machine according to claim 1, but it is characterized in that described arm is a stretching structure, and described movable pedestal is to realize by the universal joint that is installed under the base.
4. the structure of portable multi-functional little dosage Medical CT machine according to claim 1 is characterized in that described multi-detector array tellurium zinc cadmium CdZnTe or rare-earth oxidation pottery coupling light electric diode or multianode position sensitive photo-multiplier tube array.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201161814U CN201197713Y (en) | 2008-05-12 | 2008-05-12 | Structure of portable type multifunctional micro-dose medical CT machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201161814U CN201197713Y (en) | 2008-05-12 | 2008-05-12 | Structure of portable type multifunctional micro-dose medical CT machine |
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| Publication Number | Publication Date |
|---|---|
| CN201197713Y true CN201197713Y (en) | 2009-02-25 |
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| CNU2008201161814U Expired - Fee Related CN201197713Y (en) | 2008-05-12 | 2008-05-12 | Structure of portable type multifunctional micro-dose medical CT machine |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102783968A (en) * | 2012-09-04 | 2012-11-21 | 丁厚本 | Micro-dose medical CBS-CT machine used on site |
| CN102944890A (en) * | 2012-11-06 | 2013-02-27 | 中国科学院高能物理研究所 | PS-PMT (position sensitive-photomultiplier tube) based detector signal readout method and system |
| CN103926395A (en) * | 2014-04-21 | 2014-07-16 | 王秀明 | Multifunctional clinical examination analyzer |
| CN104161538A (en) * | 2014-08-27 | 2014-11-26 | 丁厚本 | Medical CT machine based on Compton backscatter scanning technology |
| CN104849296A (en) * | 2015-04-15 | 2015-08-19 | 南京航空航天大学 | X-fluorescence detection system for cancer cell detection |
-
2008
- 2008-05-12 CN CNU2008201161814U patent/CN201197713Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102783968A (en) * | 2012-09-04 | 2012-11-21 | 丁厚本 | Micro-dose medical CBS-CT machine used on site |
| CN102944890A (en) * | 2012-11-06 | 2013-02-27 | 中国科学院高能物理研究所 | PS-PMT (position sensitive-photomultiplier tube) based detector signal readout method and system |
| CN102944890B (en) * | 2012-11-06 | 2015-06-24 | 中国科学院高能物理研究所 | PS-PMT (position sensitive-photomultiplier tube) based detector signal readout method and system |
| CN103926395A (en) * | 2014-04-21 | 2014-07-16 | 王秀明 | Multifunctional clinical examination analyzer |
| CN104161538A (en) * | 2014-08-27 | 2014-11-26 | 丁厚本 | Medical CT machine based on Compton backscatter scanning technology |
| CN104849296A (en) * | 2015-04-15 | 2015-08-19 | 南京航空航天大学 | X-fluorescence detection system for cancer cell detection |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Hefei CBS Electronics Science Technique Co.,Ltd. Assignor: Ding Houben|Dengqen Contract record no.: 2012340000324 Denomination of utility model: Structure of portable type multifunctional micro-dose medical CT machine Granted publication date: 20090225 License type: Exclusive License Record date: 20121022 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090225 Termination date: 20130512 |