CN103845070B - PET-CT scanning means and its control method - Google Patents
PET-CT scanning means and its control method Download PDFInfo
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- CN103845070B CN103845070B CN201210521265.7A CN201210521265A CN103845070B CN 103845070 B CN103845070 B CN 103845070B CN 201210521265 A CN201210521265 A CN 201210521265A CN 103845070 B CN103845070 B CN 103845070B
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Abstract
The invention discloses a kind of PET CT scan device and its control method, the PET CT scan device includes CT machines and PET machines, wherein the junction of the CT machines and PET machines is equipped with luminescent screen；The PET machines include rebuilding computer, coincident circuit plate and PET control circuit boards, the PET control circuit boards with coincident circuit plate to be connected, and the coincident circuit plate is connected with computer is rebuild, and the PET control circuit boards are connected with the drive circuit board of luminescent screen.PET CT scan device provided by the invention and its control method, the signal intensity by acquiring luminous environment obtains the body part change information of patient, so as to more accurately rebuild scan image.
Description
Technical field
The present invention relates to a kind of Medical Devices and its control method more particularly to a kind of PET-CT scanning means and its controls
Method.
Background technology
PET-CT is by PET（Positron Emission Tomography is imaged）And CT（Computed tomography）It is incorporated in one
It rises, using the different reconstruction computer of the same examination couch and two, the detailed function of lesion and metabolism equimolecular is provided by PET
Information, and CT provides the precise anatomical positioning of lesion, it is primary to image and by PET image and CT image co-registrations, it is each to can get whole body
The faultage image in orientation has the characteristics that sensitive, accurate, special and registration, can show the pathologic, physiologic of lesion simultaneously
Variation and morphosis, hence it is evident that the accuracy for improving diagnosis achievees the purpose that early detection lesion and diagnoses the illness.PET/CT exists
Due to patient respiration in scanning process, cause the same position of body in scanning process not in the same position, it is therefore desirable to
A kind of means obtain respiratory state of the patient in scanning process.
A sensor is installed in PET/CT scannings now with patient, and when patient respiration can drive sensor to generate up and down
Movement, sensor export a waveform and obtain patient as shown in Figure 1, by being sampled to obtain pulse signal to the waveform and exist
Motion state in scanning process.It is this that the motion state of patient in a scan is obtained using approach sensor, due to by patient
Influence factor is excessive, therefore accuracy is not high, and places sensor on the body of patient, relatively complicated.
Invention content
Technical problem to be solved by the invention is to provide a kind of PET-CT scanning means and its control methods, can be accurate
The change in location information for obtaining patient's body part in scanning process, so as to so that the image reconstructed is more accurate.
The present invention to solve above-mentioned technical problem and the technical solution adopted is that provide a kind of PET-CT scanning means, including
CT machines and PET machines, wherein the junction of the CT machines and PET machines is equipped with luminescent screen.
Above-mentioned PET-CT scanning means, wherein the PET machines include rebuilding computer, coincident circuit plate and PET controls
Circuit board, the PET control circuit boards are connected with coincident circuit plate, and the coincident circuit plate is connected with computer is rebuild, described
PET control circuit boards are connected with the drive circuit board of luminescent screen.
Above-mentioned PET-CT scanning means, wherein the luminescent screen is LED luminescent screens, including LED drive circuit plate and more
A LED, the PET control circuit boards are connected by LED drive circuit plate with multiple LED.
Above-mentioned PET-CT scanning means, wherein the multiple LED is annularly arranged and along the company of CT machines and/or PET machines
Connect the circumferencial direction distribution of the annular mechanical cover at place.
Above-mentioned PET-CT scanning means, wherein the CT machines are monolayer spiral CT or multi-layer spiral CT.
The present invention also provides a kind of control method of above-mentioned PET-CT scanning means to solve above-mentioned technical problem, wherein
Include the following steps：A) brightness of luminescent screen is adjusted so that the brightness change of luminescent screen and the breath rhythm of patient are consistent；b)
The brightness change signal of PET control circuit boards acquisition luminescent screen issues coincident circuit plate；C) coincident circuit plate becomes the brightness
Change signal is converted into respiration gate control information and is sent to reconstruction computer；D) it rebuilds computer and patient is obtained according to respiration gate control information
Various respiratory states in scanning process, and reconstruct image of the patient under various respiratory states.
The control method of above-mentioned PET-CT scanning means, wherein the luminescent screen is LED luminescent screens, including LED drivings
Circuit board and multiple LED, the LED drive circuit plate adjust LED's by the duty ratio and FREQUENCY CONTROL for changing pulsewidth modulation
Brightness.
The control method of above-mentioned PET-CT scanning means, wherein the respiration gate control information includes various respiratory states,
The various respiratory states include the state of expiration or air-breathing, the power of breathing and the frequency of breathing.
The control method of above-mentioned PET-CT scanning means, wherein in respiration gate control information, the light and shade of the luminescent screen
State corresponds to the state of expiration or air-breathing, and the power of the brightness of the luminescent screen corresponds to the power of breathing, and the luminescent screen is bright
The frequency secretly changed corresponds to the frequency of breathing.
The control method of above-mentioned PET-CT scanning means, wherein the power of the breathing be respiration in suck or
The gas flow of exhalation and the duration of respiration.
The present invention, which compares the prior art, following advantageous effect：PET-CT scanning means provided by the invention and its control
Method, the signal intensity by acquiring luminous environment obtains the body part change information of patient, so as to more accurately weigh
Build scan image.
Description of the drawings
Fig. 1 is the motion state schematic diagram of the patient of existing sensor acquisition in a scan；
Fig. 2 is the structural schematic diagram of PET-CT scanning means of the present invention；
Fig. 3 is the circuit control block diagram of luminescent screen in PET-CT scanning means of the present invention；
Fig. 4 is the control flow schematic diagram of PET-CT scanning means of the present invention.
In figure：
1 CT machines, 2 PET machines, 3 examination couch
4 luminescent screens 5 rebuild 21 PET control circuit boards of computer
22 coincident circuit plate, 41 LED, 42 LED drive circuit plates
Specific implementation mode
The invention will be further described with reference to the accompanying drawings and examples.
Fig. 2 is the structural schematic diagram of PET-CT scanning means of the present invention.
Fig. 2 is referred to, PET-CT scanning means provided by the invention includes CT machines 1 and PET machines 2, wherein the CT machines 1
The luminescent screen 4 of brightness-adjustable is equipped with the junction of PET machines 2.The PET-CT scanning means further includes examination couch 3, examination couch 3
It is moved between CT machines 1 and PET machines 2.
Above-mentioned PET-CT scanning means, the CT machines 1 can be monolayer spiral CT or multi-layer spiral CT.The PET machines 2
Including rebuilding computer 5, coincident circuit plate 22 and PET control circuit boards 21, the PET control circuit boards 21 and coincident circuit plate
22 are connected, and the coincident circuit plate 22 is connected with computer 5 is rebuild, the driving electricity of the PET control circuit boards 21 and luminescent screen 4
Road plate is connected.The luminescent screen 4 can be incandescent lamp or fluorescent lamp, preferably LED（Light emitting diode）Luminescent screen.LED shines
Screen includes LED drive circuit plate 42 and multiple LED 41, the PET control circuit boards 21 by LED drive circuit plate 42 with it is more
A LED 41 is connected, as shown in Figure 3.Certainly, independent driving device, or the master control by CT machines 1 can also be used in luminescent screen 4
Circuit board drives, as long as ensureing that brightness can be adjusted as needed, this is no longer going to repeat them.
As long as the specific layout of luminescent screen 4 and position setting ensure patient in scanning process, it can be seen that luminescent screen 4 is sent out
The light shot out.It is such as used as better embodiment, multiple LED 41 are preferably annular in shape to be arranged and along CT machines 1 and/or PET
The circumferencial direction of the annular mechanical cover of the junction of machine 2 is distributed so that patient is from all angles it can be seen that luminescent screen 4 is sent out
The light shot out, and it is compact in structure.
Patient is in a pitch-dark environment in existing PET-CT scanning processes, in the environment of this dark, it is possible to
Patient can be caused nervous, patient body is in a kind of random motion state, can seriously affect reconstruction in this way
The authenticity of image.And PET-CT scanning means provided by the invention and its control method, patient can see in scanning process
The light emitted to luminescent screen 4 makes patient be in a kind of light of warmth so as to guide patient respiration using luminous environment
It is not only beautiful but also patient can be made to be in the state that one kind is loosened scan under environment.Specific control process is as shown in figure 4, including such as
Lower step：
Step S401：Adjust the brightness of luminescent screen 4 so that the brightness change of luminescent screen 4 and the breath rhythm phase one of patient
It causes；Such as training guiding patient changes breath rhythm according to the brightness change of luminescent screen 4；The brightness of luminescent screen 4 passes through PWM（Pulsewidth
Modulation）Control, for example for LED luminescent screens, PET control circuit boards 21 pass through I/O（Input/output port）Output level is to LED
Drive circuit board 42, by the duty ratio and frequency that change PWM, thus it is possible to vary the voltage of LED41, to adjust the bright of LED 41
Degree；
Step S402：The brightness change signal of the luminescent screen 4 of the acquisition of PET control circuit boards 21 simultaneously issues coincident circuit plate
22；
Step S403：Coincident circuit plate 22 converts the brightness change signal to respiration gate control information and is sent to reconstruction meter
Calculation machine 5 exports a coincidence pulse and gives reconstruction computer 5；Respiration gate control information specifically includes various respiratory states, various to exhale
Suction state includes expiration or suction condition, the power of breathing and the frequency of breathing；The power of breathing is mainly respiration
The duration of the gas flow and respiration of middle sucking or exhalation；Respiratory rate refers to the number of breathing per minute, calculates breathing
Want the chest and abdomen of close observation patient, an air-breathing that primary exhale is added to be exactly respiration when frequency, mark is chest
A secondary fluctuation, chest rise unobvious person can judge with abdomen fluctuating.In order to preferably meet the measurement need of different patients
Want, the respiratory intensity and frequency for counting different crowd can be measured in advance, and establish respiratory intensity, frequency and light emission luminance,
The correspondence of light and shade change frequency selectes corresponding light emission luminance further according to the case where patient when actual test and light and shade changes
Frequency.
Step S404：It rebuilds computer 5 and various breathing shapes of the patient in scanning process is obtained according to respiration gate control information
State, and reconstruct image of the patient under various respiratory states.In respiration gate control information, the light and shade state of luminescent screen 4 corresponds to
The state of expiration or air-breathing, such as the bright corresponding expiration state of lamp, lamp secretly corresponds to suction condition；Or the bright corresponding suction condition of lamp,
Lamp secretly corresponds to expiration state.The power of the corresponding breathing of power of the brightness of luminescent screen 4, the brighter display of luminescent screen 4, respiration
Duration is also corresponding longer, and the gas flow for sucking or breathing out in this way in respiration is also more.The light and shade of luminescent screen 4 becomes
The frequency of change corresponds to the frequency of breathing, and the two will be consistent substantially.When reconstruction, disease can be obtained according to the respiratory state of patient
The body part change information of people, for example, the respiratory rate of patient and the fluctuating frequency of patient body it is consistent, patient once exhales
The duration of the gas flow, respiration that suck or breathe out in suction and the relief intensity of patient body are consistent.It in this way can be with
Patient's scan image is reconstructed very accurately, it might even be possible to obtain the dynamic image scanning of 3D.
In conclusion PET-CT scanning means provided by the invention and its control method, make patient according to luminous environment brightness
Change is turned into different breathings, and the respiratory state of patient and the brightness change of luminous environment are corresponding, in this way by acquiring luminous environment
Signal intensity can obtain the respiratory state of patient, so as to obtain the body part change information of patient.Due to using light
Environment guiding patient respiration is that a kind of active purposefully guides patient to do regular breathing, therefore can rebuild very accurately
Go out patient's scan image.
Although the present invention is disclosed as above with preferred embodiment, however, it is not to limit the invention, any this field skill
Art personnel, without departing from the spirit and scope of the present invention, when can make a little modification and it is perfect, therefore the present invention protection model
It encloses to work as and is subject to what claims were defined.
Claims (7)
1. a kind of PET-CT scanning means, including CT machines (1) and PET machines (2), which is characterized in that the CT machines (1) and PET machines
(2) junction is equipped with luminescent screen (4), and training guiding patient changes breath rhythm according to the brightness change of luminescent screen (4), shines
The light and shade state for shielding (4) corresponds to the state of expiration or air-breathing, and the power of the corresponding breathing of power of the brightness of luminescent screen (4) is described
Luminescent screen (4) is LED luminescent screens, including LED drive circuit plate (42) and multiple LED (41), the PET control circuit boards (21)
It is connected with multiple LED (41) by LED drive circuit plate (42)；
The PET machines (2) include rebuilding computer (5), coincident circuit plate (22) and PET control circuit boards (21), the PET controls
Circuit board (21) processed is connected with coincident circuit plate (22), and the coincident circuit plate (22) is connected with computer (5) is rebuild, described
PET control circuit boards (21) are connected with the drive circuit board of luminescent screen (4)；
The brightness change signal of PET control circuit boards (21) acquisition luminescent screen (4) issues coincident circuit plate (22), coincident circuit plate
(22) it converts the brightness change signal to respiration gate control information and is sent to reconstruction computer (5), rebuild computer (5) root
Various respiratory states of the patient in scanning process are obtained according to respiration gate control information, and reconstruct patient in various respiratory states
Under image, the respiration gate control information includes various respiratory states, and the various respiratory states include expiration or air-breathing
State, the power of breathing and the frequency of breathing.
2. PET-CT scanning means as described in claim 1, which is characterized in that the multiple LED (41) annularly arranges simultaneously
Along the circumferencial direction distribution of the annular mechanical cover of the junction of CT machines (1) and/or PET machines (2).
3. PET-CT scanning means as described in claim 1, which is characterized in that the CT machines (1) are monolayer spiral CT or more
Slices spiral CT.
4. a kind of control method of PET-CT scanning means as described in claim 1, which is characterized in that include the following steps：
A) brightness of luminescent screen (4) is adjusted so that the brightness change of luminescent screen (4) and the breath rhythm of patient are consistent；
B) the brightness change signal of PET control circuit boards (21) acquisition luminescent screen (4) issues coincident circuit plate (22)；
C) coincident circuit plate (22) converts the brightness change signal to respiration gate control information and is sent to reconstruction computer
(5)；
D) it rebuilds computer (5) and various respiratory states of the patient in scanning process is obtained according to respiration gate control information, lay equal stress on
Build out image of the patient under various respiratory states.
5. the control method of PET-CT scanning means as claimed in claim 4, which is characterized in that the luminescent screen (4) is LED
Luminescent screen, including LED drive circuit plate (42) and multiple LED (41), the LED drive circuit plate (42) is by changing pulsewidth tune
The duty ratio and FREQUENCY CONTROL of system adjust the brightness of LED (41).
6. the control method of PET-CT scanning means as claimed in claim 4, which is characterized in that in the respiration gate control information
In, the light and shade state of the luminescent screen (4) corresponds to the state of expiration or air-breathing, and the power of the brightness of the luminescent screen (4) is right
The frequency of the power that should be breathed, luminescent screen (4) the light and shade variation corresponds to the frequency of breathing.
7. the control method of PET-CT scanning means as claimed in claim 6, which is characterized in that the power of the breathing is one
The duration of the gas flow and respiration that suck or breathe out in secondary breathing.
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| US20160081613A1 (en) * | 2014-09-18 | 2016-03-24 | Christoph Braun | Arrangement and method for outputting light signals at a medical-technical installation |
| CN107133549B (en) | 2016-02-29 | 2020-11-24 | 上海联影医疗科技有限公司 | ECT motion gating signal acquisition method and ECT image reconstruction method |
| US10282871B2 (en) * | 2017-07-10 | 2019-05-07 | Shanghai United Imaging Healthcare Co., Ltd. | Systems and methods for pet image reconstruction |
| CN108634971A (en) | 2018-05-11 | 2018-10-12 | 上海联影医疗科技有限公司 | Medical detecting system, method, computer equipment and storage medium |
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| EP0549835B1 (en) * | 1991-12-30 | 1996-03-13 | Hamamatsu Photonics K.K. | Diagnostic apparatus |
| JP4230709B2 (en) * | 2002-03-15 | 2009-02-25 | 株式会社東芝 | X-ray CT system |
| US7117026B2 (en) * | 2002-06-12 | 2006-10-03 | Koninklijke Philips Electronics N.V. | Physiological model based non-rigid image registration |
| JP4519553B2 (en) * | 2004-07-27 | 2010-08-04 | 富士フイルム株式会社 | Radiation irradiation control method, apparatus and program |
| US20080146911A1 (en) * | 2004-10-18 | 2008-06-19 | Kabushiki Kaisha Toshiba | Respiration Monitoring Apparatus, Respiration Monitoring System, Medical Processing System, Respiration Monitoring Method, And Respiration Monitoring Program |
| DE102005033471A1 (en) * | 2005-07-18 | 2007-01-25 | Siemens Ag | A breathing body imaging procedure records breathing signals and takes X ray projections with source intensity modulate to depend on breath signal and breath signal ratio derived threshold |
| CN100534256C (en) * | 2006-01-23 | 2009-08-26 | 北京飞天诚信科技有限公司 | Respiration lamp controlling method and its device |
| CN101926652B (en) * | 2006-10-11 | 2016-03-23 | 株式会社东芝 | X ray computer tomography and medical imaging apparatus, breathing indicating device |
| CN101305921B (en) * | 2007-05-17 | 2010-12-01 | 上海西门子医疗器械有限公司 | Method and device for implement CT respiration gate control |
| WO2010109345A1 (en) * | 2009-03-25 | 2010-09-30 | Koninklijke Philips Electronics N.V. | Method and apparatus for breathing adapted imaging |
| JP2013017491A (en) * | 2009-11-10 | 2013-01-31 | Honda Hadronix Co Ltd | Signal generator for respiratory gating, tomography device, radiation simulator, and radiation therapy device |
| JP2012085915A (en) * | 2010-10-21 | 2012-05-10 | Toshiba Corp | X-ray ct apparatus |
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Address after: 201815 No. 1180 Xingxian Road, Jiading Industrial Zone, Jiading District, Shanghai Patentee after: Shanghai Lianying Medical Technology Co., Ltd Address before: 201815 No. 1180 Xingxian Road, Jiading Industrial Zone, Jiading District, Shanghai Patentee before: SHANGHAI UNITED IMAGING HEALTHCARE Co.,Ltd. |
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Address after: 201807 2258 Chengbei Road, Jiading District, Shanghai Patentee after: Shanghai Lianying Medical Technology Co.,Ltd. Address before: 201815 No. 1180 Xingxian Road, Jiading Industrial Zone, Jiading District, Shanghai Patentee before: Shanghai Lianying Medical Technology Co.,Ltd. |