CN104347063A - Method and device for eliminating noise on computer X-ray tomography system - Google Patents
Method and device for eliminating noise on computer X-ray tomography system Download PDFInfo
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- CN104347063A CN104347063A CN201310329456.8A CN201310329456A CN104347063A CN 104347063 A CN104347063 A CN 104347063A CN 201310329456 A CN201310329456 A CN 201310329456A CN 104347063 A CN104347063 A CN 104347063A
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Abstract
The invention provides a device for eliminating noise on a computer X-ray tomography system. The device is characterized by comprising the following assemblies including a noise collecting device, a denoising processing device and an output device; the noise collecting device is used for receiving audio signals coming from a scanning chamber; the denoising processing device is used for conducting denoising processing on the audio signals; and the output device is used for sending the processed audio signals to a control chamber to be played. The invention further discloses corresponding equipment for implementing the method for eliminating the noise.
Description
Technical field
Present invention relates in general to computed tomography (Computed Tomography, CT) system, relate more particularly to the method and apparatus of the noise reduction of CT system.
Background technology
The method described in this part can be implemented, but may not be by the method conceived in advance or carry out.Therefore, unless otherwise specified herein, otherwise the method described in this part for the claim in the application, being not prior art and not being recognized as prior art by being included in this part.In addition, all embodiments of the present invention need not solve whole (or even any one) in the problem proposed in this part.
Computed tomography, is also called CT Scan, is a kind of Image Diagnosis inspection.This scanning technique is used for checking human body widely, forms image data, is convenient to doctor and diagnoses.
Usually, ct apparatus comprises multiple subsystem, and subsystems is provided with the scanning imagery that different multiple parts have coordinated human body jointly.But, in the operational process of ct apparatus, due to the operation of multiple parts, just may produce noise, thus cause the patient carrying out checking to produce uncomfortable sensation, even affect the normal communication between patient and manipulation personnel.
The noise produced mainly comes from following some parts.Such as, due in ct apparatus operational process, the problem producing heat in frame (Gantry), can be there is, like this, with regard to often multiple fan can be arranged in frame, parts corresponding in it be lowered the temperature.Due to the rotation of fan, just may produce and cause the uncomfortable noise of patient.Each subsystem is all configured with fan, such as data acquisition system (DAS), bulb etc.In addition, current sound, synchronous cog belt rotate the sound sent, and the sound that gears meshing sends is all very considerable.This reduces the noise produced in ct apparatus operational process with regard to needing or eliminates, thus provides convenient, also for patient provides comfortable scanning to experience for patient and manipulation interactions among persons.
Summary of the invention
Therefore, need a kind of method and apparatus to solve at least one or more problem above-mentioned.
For this reason, according to an aspect of the present invention, a kind of method for stress release treatment in computer X-ray computed tomography (SPECT) system is provided, it is characterized in that comprising the following steps: receive the sound signal from scanning room; Denoising disposal is carried out to described sound signal; Sound signal after process is sent to OPS play.
According to a further aspect in the invention, a kind of device of stress release treatment on computer X-ray computed tomography (SPECT) system is provided, it is characterized in that, comprise following assembly: sound collection means, for receiving the sound signal from scanning room; Denoising disposal device, for carrying out Denoising disposal to described sound signal; Output unit, plays for the sound signal after process is sent to OPS.
In accordance with a further aspect of the present invention, provide a kind of computer program, it comprises the instruction realizing method of the present invention when performing on a processor.
According to another aspect of the invention, provide a kind of non-volatile memory medium, it stores the instruction realizing method of the present invention when performing on a processor.
By device of the present invention or method, greatly reduce the noise from scanning room that scan operation person hears in scanning process, thus can clearly exchange with patient.In addition, by the application of antinoise, the scanning that also can strengthen patient is experienced, under relatively quiet environment, accept scanning.
Accompanying drawing explanation
In order to more thoroughly understand content of the present disclosure, below with reference to following description carried out by reference to the accompanying drawings, in the accompanying drawings:
Fig. 1 is the structural map according to CT imaging system of the present invention;
Fig. 2 is the schematic block diagram of the system shown in Fig. 1;
Fig. 3 is the schematic diagram for implementing layout according to an embodiment of the invention;
Fig. 4 is the audio frequency process schematic diagram of talking with between patient and doctor in existing scanning process;
Fig. 5 is the audio frequency process schematic diagram of talking with between patient and doctor in scanning process according to an embodiment of the invention;
Fig. 6 shows the process flow diagram of the process of the noise reduction module according to an embodiment;
Fig. 7 is the schematic diagram for implementing layout according to another embodiment of the invention;
Fig. 8 is the audio frequency process schematic diagram of talking with between patient and doctor in scanning process in accordance with another embodiment of the present invention;
Fig. 9 is the process flow diagram of the process of noise reduction module according to an embodiment;
Figure 10 is the schematic diagram for implementing layout according to still another embodiment of the invention.
Figure 11 is the audio frequency process schematic diagram of talking with between patient and doctor in the scanning process according to another embodiment of the present invention;
Figure 12 shows the arrangenent diagram of the de-noising equipment according to an embodiment;
Figure 13 shows the arrangenent diagram of the de-noising equipment according to another embodiment.
Embodiment
In the following detailed description, with reference to the accompanying drawing as its part, wherein diagrammatically show and wherein can realize specific embodiments of the invention.With enough details, these embodiments are described, those skilled in the art are made to realize the present invention, and should be appreciated that when not departing from the scope of each embodiment of the present invention, can combine embodiment, or other embodiments can be utilized and can make structure, logic and electrically on change.Therefore, detailed description below should not be considered restrictive, and should be illustrative.Scope of the present invention is by the claims of enclosing and equivalents thereof.
With reference to Fig. 1 and 2, CT (computer tomography) (CT) imaging system 100 is depicted as and comprises scanning support 102, and it represents " third generation " CT scanner.Scanning support 102 has x-ray source 1021, and X-ray beam is incident upon on the opposition side of scanning support 102 towards detector set piece installing 1024 by it.In an embodiment of the present invention, x-ray source comprises stationary target or rotary target.Detector set piece installing 1024 is formed by multiple detecting device and data-acquisition system (DAS).Described multiple detector senses is through the X ray of the projection of medical patient 103, and wherein each detecting device produces analog electrical signal, and it represents the intensity of impinging x-ray beam and the attenuated beam thus when it passes through patient 103.Detecting device generally include for make the collimating apparatus of the X-ray beam collimation received at detecting device, contiguous collimating apparatus for X ray is converted to luminous energy scintillator (scintillator) and for receiving the luminous energy coming from contiguous scintillator and the photodiode producing electric signal from it.Usually, X ray is converted to luminous energy by each scintillator of scintillator arrays.Luminous energy is released into the photodiode being close to it by each scintillator.Each photodiode detects luminous energy and each detecting device generating corresponding electrical signal detection device array 1024 produces independent electric signal, and it is decay of radiation beam that the intensity and therefore may be used for that this electric signal represents impact radiation bundle (such as X-ray beam) to be estimated at radiation beam through object or patient 103.
Obtaining the scan period of X-ray projection data, scanning support 102 and the assembly that it is installed rotate around rotation center, and produce much noise thus.The rotation of scanning support 102 and the operation of x-ray source carry out management and control by the scan control module 2021 of the master control borad 202 of CT system 100.Master control borad 202 also comprises detection bed controller 2022, manipulation communication module 2023 and noise reduction module 2024, and this detection bed controller 2022 controls movement and the position of detecting bed 101.This manipulation communication module 2023 is for carrying out communication with controlling equipment 201, receive from the order of controlling equipment 201 and sweep parameter and other module passing to master control borad 202 for controlling, receive the information such as the feedback of other module afterwards and pass to controlling equipment 201, this noise reduction module is for reducing the noise with generation during elimination scanning, and this will be discussed later in more detail.
Controlling equipment 201 has the operator interface of certain form, the controller of such as keyboard, mouse, voice activation or any other input equipment be applicable to.The display of association allows operator to observe from other data of master control borad 202 and the image of reconstruct.The order that operator provides and parameter are for providing control signal and information to master control borad 202, with gantry 102 and detection bed 101, especially the rotation of scanning support 102 and the operation of x-ray source, and the frame openings 1022 detecting that patient 103 is moved through Fig. 1 by bed in whole or in part.
It is pointed out that the master control borad described in the present embodiment can be positioned at the inside of scanning support 102, also can be arranged on outside it, or away from its position.In certain embodiments, according to concrete application, noise reduction module 2024 of the present invention also can be arranged on other equipment, and not only being arranged on and ct apparatus reducing or abates the noise as shown in Figure 2.
Fig. 3 is the schematic diagram for implementing layout according to an embodiment of the invention.Usual scanning device and patient are positioned at a room, controlling equipment and manipulator (normally doctor) are positioned at another room, between separate with wall, therefore directly cannot talk, need voice signal via the transmission of cable (not shown).Microphone 301 for receiving patient's sound is usually located at the top of patient on scanning support 102, because the usual face of patient lays flat on one's back upward, such being furnished with is beneficial to the sound collecting patient.Loudspeaker 302 for playing sound to patient is usually placed in and detects bed, and sound can be transmitted better by contact.The microphone 303 of OPS and loudspeaker 304, exemplarily unrestricted, couple with the intercommunication control panel (Scan Control Intercom Board, SCIM) of OPS, this intercommunication control panel can be couple to controlling equipment, is sent and received audio signal by controlling equipment.Alternatively, the microphone of OPS and loudspeaker can be couple to miscellaneous equipment, send and received audio signal independent of controlling equipment.
With reference to figure 4, it illustrates the audio frequency process schematic diagram of talking with between patient and doctor in existing scanning process.Existing dialogue is based on the layout of Fig. 3.Microphone 301 on scanning support have collected the sound of patient, also inevitably have collected the noise in scanning room simultaneously, via intercommunication control panel (the Gantry Intercom Board of a master control borad part on scanning support, GICOM) process, the intercommunication control panel SCIM being positioned at OPS is delivered to the form of simulating signal, play by the loudspeaker 304 coupled on it, if noise is excessive, then doctor clearly cannot hear the sound of patient.On the other hand, the sound of manipulator collected by the microphone 303 of OPS, certainly also collects the noise of OPS, but this noise is very little usually, can ignore, then through the process of SCIM, play with the loudspeaker 302 that the form of simulating signal is delivered in scanning room.
With reference to figure 5, show the audio frequency process schematic diagram of talking with between patient and doctor in scanning process according to an embodiment of the invention.This embodiment is equally based on the layout of Fig. 3.Microphone 301 on scanning support have collected the sound of patient, and also inevitably have collected the noise in scanning room, the noise reduction module 2023 being sent to master control borad 202 on scanning support processes simultaneously.This process comprises: the sound signal of simulation is carried out sampling digitizing, identifies noise pattern, then remove noise, and the concrete mode about this process will provide at hereinafter with reference Fig. 6.Treated sound signal is sent to the intercommunication control panel (Scan Control Intercom Board, SCIM) being positioned at OPS, is play by the loudspeaker 304 coupled on it.Eliminate owing to applying noise, manipulator more clearly can hear the sound of patient.On the other hand, the sound of manipulator collected by the microphone 303 of OPS, certainly also collects the noise of OPS, but this noise is very little usually, can ignore, then through the process of SCIM, play with the loudspeaker 302 that the form of simulating signal is delivered in scanning room.Usually this loudspeaker is placed in and detects on bed, and sound can be transmitted better by contact.
Fig. 6 shows the process flow diagram of the process of the noise reduction module according to an embodiment.After receiving the sound signal from the microphone on scanning support, first sampling digitizing process 602 is carried out to this signal; Next the pattern 604 of this noise is identified, such as average amplitude etc.; Then using noise eliminates 606 pointedly, such as compresses the voice signal of below described average amplitude, or filters this signal.The processing mode of this noise reduction module is applicable to the situation of the constant or slow change of noise pattern, and the noise pattern of scanning room meets this situation.
Fig. 7 is the schematic diagram for implementing layout according to another embodiment of the invention.Scanning device and patient are positioned at a room, and controlling equipment 102 and manipulator (normally doctor) are positioned at another room, between separate with wall, therefore directly cannot talk, need voice signal via the transmission of cable (not shown).Microphone for receiving patient's sound has multiple, such as, and two.One of them Mike 301 (also can be called main Mike) is usually located at the top of patient on scanning support 102, because the usual face of patient lays flat on one's back upward, such being furnished with is beneficial to the sound collecting patient.Another Mike 701 (also can be called secondary Mike) can be positioned at the below of patient on scanning support 102, the sound in order to be unfavorable for collecting patient like this, and mainly collect the noise of scanning room, on this basis simultaneously, compared to other positions, also ensure that range noise source comparatively near (it is mainly positioned in frame), reflect the noise that main Mike collects more realistically.Loudspeaker for playing sound to patient is usually placed in and detects bed 101, and sound can be transmitted better by contact.The microphone 303 of OPS and loudspeaker 304, exemplarily unrestricted, couple with the intercommunication control panel of OPS, this intercommunication control panel can be couple to controlling equipment 201, is sent and received audio signal by controlling equipment 201.Alternatively, microphone 303 and the loudspeaker 304 of OPS can be couple to miscellaneous equipment, send and received audio signal independent of controlling equipment 201.
Fig. 8 is the audio frequency process schematic diagram of talking with between patient and doctor in scanning process in accordance with another embodiment of the present invention.This embodiment is based on the layout of Fig. 7.Main Mike 301 on scanning support have collected the sound of patient, also inevitably have collected the noise in scanning room simultaneously, is sent to the noise reduction module 2023 of master control borad 202 on scanning support.Secondary Mike 701 simultaneously on scanning support mainly have collected the noise of scanning room, is also sent to the noise reduction module 2023 of master control borad 202 on scanning support.Although it also inevitably collects the sound of patient, due to patient's sound wave line of propagation mainly upward, and owing to detecting blocking of bed, be diffracted into finite energy below, compared to large ground unrest, it can be ignored.The sound that noise reduction module 2023 utilizes main Mike and secondary Mike to collect carries out noise Processing for removing to the sound that main Mike collects.Provide with reference to Fig. 9 according to the configuration of the noise reduction module 2023 of this embodiment and process.Treated sound signal is sent to the intercommunication control panel SCIM being positioned at OPS, and the loudspeaker 304 via OPS is play.Eliminate owing to applying noise, manipulator more clearly can hear the sound of patient.On the other hand, the sound of manipulator collected by the microphone 303 of OPS, certainly also collects the noise of OPS, but this noise is very little usually, can ignore, then through the process of SCIM, play with the loudspeaker 302 that the form of simulating signal is delivered in scanning room.
Fig. 9 shows the process flow diagram of the process of the noise reduction module according to an embodiment.The parameter calibration 902 of noise elimination is first carried out after beginning.First set forth carry out the parameter calibration of noise elimination based on principle.The sound signal that main Mike receives is represented with M1, with the sound signal that M2 vice Mike receives, V represents the voice signal of patient, N represents the noise signal of scanning room, represent the regulation coefficient of the noise signal of patient's voice signal and scanning room for main Mike respectively with a1, b1, a2, b2 represent the regulation coefficient of noise signal for secondary Mike of patient's voice signal and scanning room respectively.Relation between above-mentioned parameter is shown below:
M1＝a1·V+b1·N (1)
M2＝a2·V+b2·N (2)
Can derive from above formula (1) and (2):
Wherein
The parameter calibration process of carrying out noise elimination is as follows:
Patient is sounding not, and namely V is set to 0, measures the value of now M1 and M2, and according to formula (1), known
M1＝b1·N (4)
M2＝b2·N (5)
From above formula (4) and (5):
Thus the value of B can be calculated.
Next, closing device, makes noise N be 0, known:
M1＝a1·V
M2＝a2·V
Now patient sounds, and measures the value of now M1, M2 and V, just can calculate the value of a1 and a2.Then when equipment normally runs and patient loquiturs 904, measure the value of M1 and M2, and adopt formula (3) to calculate the voice signal 906 of the patient after stress release treatment.The processing mode of this noise reduction module had both been applicable to the situation (noise pattern of scanning room meets this situation) of the constant or slow change of noise pattern, also the situation that noise pattern changes is suitable for, certainly, noise pattern there occurs change, and parameters needs again to demarcate.
Figure 10 is the schematic diagram for implementing layout according to still another embodiment of the invention.Two embodiments are mainly for the process of sound being delivered to operator from patient above, and for the sound from operator to patient, do not carry out the process of noise elimination.The layout of this embodiment is compared to the layout of Fig. 7, and unique not being both adds a de-noising equipment 1001 on detection bed.Be equipped with loudspeaker 1002 in this de-noising equipment, this loudspeaker plays noise reduction signal to support or to suppress the noise that patient hears that disappears in scanning process.De-noising equipment 1001 shown in Figure 10 is positioned at and detects the top of bed, i.e. the overhead of patient, alternatively, when patient change a pin direction lie down time, it also can be positioned at the end detecting bed, with the ear of patient nearby.No matter be positioned at where, all follow a principle, the scanning activity to patient can not be affected.
Figure 11 is the audio frequency process schematic diagram of talking with between patient and doctor in the scanning process according to another embodiment of the present invention.This embodiment is based on the layout of Figure 10.Main Mike 301 on scanning support have collected the sound of patient, also inevitably have collected the noise in scanning room simultaneously, is sent to the noise reduction module 2023 of master control borad 202 on scanning support.Secondary Mike 701 simultaneously on scanning support mainly have collected the noise of scanning room, is also sent to the noise reduction module 2023 of master control borad 202 on scanning support.Although it also inevitably collects the sound of patient, due to patient's sound wave line of propagation mainly upward, and owing to detecting blocking of bed, be diffracted into finite energy below, compared to large ground unrest, it can be ignored.The sound that noise reduction module utilizes main Mike 301 and secondary Mike 701 to collect carries out noise Processing for removing to the sound that main Mike collects.Carry out noise Processing for removing according to the sound collected main Mike of this embodiment to provide with reference to figure 9 above.Treated sound signal is sent to the intercommunication control panel being positioned at OPS, and the loudspeaker 304 via OPS is play.Eliminate owing to applying noise, manipulator more clearly can hear the sound of patient.Meanwhile, this noise reduction module 2023 generates anti-noise signal, and is sent to de-noising equipment 1001 in radio frequencies and plays, to offset the noise in scanning room.The audio frequency that this anti-noise signal can be collected according to secondary microphone simply generates, and also can calculate according to formula as previously described (1) and (2).Certainly, the use of this de-noising equipment can be selected according to the wish of patient or operator.Preferably, this de-noising equipment adopts powered battery, can accomplish plug and play, conveniently change position, the reason line problem that line powered also can be avoided to bring.Alternatively, also can be powered by the device of fixing de-noising equipment, the reason line problem that line powered can be avoided equally to bring.On the other hand, the Mike of OPS collects the sound of manipulator, certainly also collects the noise of OPS, but this noise is very little usually, can ignore, then through the process of SCIM, play with the loudspeaker 302 that the form of simulating signal is delivered in scanning room.Usually this loudspeaker is placed in and detects on bed, and sound can be transmitted better by contact.By the application of de-noising equipment, patient also more clearly can hear the sound from operator.
Figure 12 shows the arrangenent diagram of the de-noising equipment according to an embodiment.This de-noising equipment 1001 is divided into electric part 1203 and filling part 1204, and electric part is shown in broken lines, and be wherein provided with symmetrical two loudspeakers 1201 and 1202, in order to not affect scanning activity, this part should not be in Image chain.Filling part 1204 is made up of light and soft material, and it can not have an impact to X ray, therefore can be in Image chain, as pillow for patient, can experience to promote scanning.Preferably, this de-noising equipment can adopt any existing for being fixed in the technology detected on bed and/or the stationary installation dismantled easily easily and detecting bed and be coupled.And alternatively, this stationary installation can be powered for de-noising equipment.
Figure 13 shows the arrangenent diagram of the de-noising equipment according to another embodiment.This de-noising equipment only comprises electric part 1203, shown in broken lines equally, and be wherein provided with symmetrical two loudspeakers 1201 and 1202, in order to not affect scanning activity, this part should not be in Image chain.Preferably, this de-noising equipment can adopt any existing for being fixed in the technology detected on bed and/or the stationary installation dismantled easily easily and detecting bed and be coupled.And alternatively, this stationary installation can be powered for de-noising equipment.
In this article, term "a" or "an" comprises each or more than one a plurality of of odd number.That term "or" is used to refer to not get rid of or (nonexclusive or), unless otherwise stated.Term " first ", " second " and " the 3rd " etc. are only used as label, and are not intended to apply numerical requirements or sequence requirement to its object.
The part that various embodiment or its parts can be used as computer system realizes.This computer system can comprise computing machine, input equipment, display unit and such as the interface of access the Internet.Microprocessor can be connected to communication bus.Computing machine can also comprise storer.This storer can comprise random access memory (RAM) and ROM (read-only memory) (ROM).This computer system can also comprise memory device, and it can make the movable memory equipment of hard disk drive or such as floppy disk, CD drive etc.This memory device can also be used in Load Computer program or other instructions to the similar device of other in computer system.
In various embodiment of the present invention, creating the method for stress release treatment described herein or its any parts can the form of processor embody.The typical case of processor comprises multi-purpose computer, the microprocessor of programming, digital signal processor (DSP), microcontroller, peripheral integrated circuit element, and can realize other equipment of step or the layout of equipment of method described herein.
As used herein, term " computing machine " is not limited to those integrated circuit being called as computing machine in the art, but can comprise any based on processor or based on untreated system, comprise use microcontroller, reduced instruction set circuits (RISC), special IC (ASIC), logical circuit and any other circuit of function described herein or the system of processor can be performed.Above-mentioned example is exemplary, and does not intend to limit by any way definition and/or the implication of term " computing machine ".Such as these terms of computing machine, processor, microcontroller, microcomputer, programmable logic controller (PLC), special IC and other programmable circuits and so on are used interchangeably herein.
Processing mechanism performs one group of instruction (such as, the method step described in correspondence), and this instruction is stored in a multiple memory element of work (being also called computer usable medium).The form of memory element can be database or the physical memory element be present in processor.Memory element can also hold data or other information as required.Physical storage can be, such as but not limited to: electronics, magnetic, optical, electrical magnetic, infrared or semiconductor system, device, equipment or propagation medium.The more specifically example of physical storage includes but not limited to lower example: random access memory (RAM), ROM (read-only memory) (ROM), EPROM (Erasable Programmable Read Only Memory) (EPROM or flash memory), hard disk drive (HDD) and compact disc-ROM (CDROM).Above-mentioned type of memory is exemplary, and the type therefore for the storer that can be used for storage computer program is not restrictive.
Described instruction group can comprise various order, and this order instruction processing machine performs specific operation, the process of such as various embodiments of the invention.The form of instruction group can be software program.Software can be the various forms of such as system software or application software.In addition, the form of software can be single program, in the set compared with the program module in large program or a part of program module.It is the modeled programming of form that software also comprises with object based programming.Inputting data by processor process can be order corresponding to user, or corresponding to the result of first pre-treatment, or corresponding to the request made by another processor.
Various embodiment of the present invention, the method for stress release treatment can be realized by software, hardware or its combination.Such as by using standard programming language (such as C, C++, Java etc.) can the method that provided by various embodiment of the present invention of software simulating.As used herein, term " software " and " firmware " can exchange, and comprise the storage any computer program for being performed by computing machine in memory.
In addition, although method described here describes in the medical scene of X-ray computed tomography (CT) system, but it is expected to these benefits and also help magnetic resonance (MR) system, positron emission tomography X (PET) system, core medical treatment and the system of other types, as long as when patient and manipulator are not in same room and there is much noise.
Claims (12)
1., for a method for stress release treatment in computer X-ray computed tomography (SPECT) system, it is characterized in that comprising the following steps:
Receive the sound signal from scanning room;
Denoising disposal is carried out to described sound signal;
Sound signal after process is sent to OPS play.
2., as claimed in claim 1 for the method for stress release treatment in computer X-ray computed tomography (SPECT) system, wherein said sound signal, from same sound collection means, collects the noise of voice and scanning room simultaneously.
3. as claimed in claim 1 for the method for stress release treatment in computer X-ray computed tomography (SPECT) system, wherein said sound signal is from the first and second sound collection means, wherein said first sound collection means collects the noise of voice and scanning room simultaneously, and described second sound collection means collects the noise of scanning room.
4., as claimed in claim 2 for the method for stress release treatment in computer X-ray computed tomography (SPECT) system, described Denoising disposal is further comprising the steps:
Analog/digital conversion is carried out to the sound signal received;
Identify noise pattern;
Suppress or stress release treatment according to noise pattern.
5., as claimed in claim 3 for the method for stress release treatment in computer X-ray computed tomography (SPECT) system, described Denoising disposal is further comprising the steps:
When only having noise signal and do not have noise signal, the sound signal received is utilized to carry out parameter calibration;
Measure the sound signal from described first sound collection means and described second sound collection means when patient speaks in scanning process;
Calculate the voice signal of patient after stress release treatment.
6. as claimed in claim 3 for the method for stress release treatment in computer X-ray computed tomography (SPECT) system, further comprising the steps:
Calculate antinoise signal;
Play antinoise signal with the noise in counteracting scanning room of patient's ear place.
7. the device of stress release treatment on computer X-ray computed tomography (SPECT) system, is characterized in that, comprise following assembly:
Sound collection means, for receiving the sound signal from scanning room;
Denoising disposal device, for carrying out Denoising disposal to described sound signal;
Output unit, plays for the sound signal after process is sent to OPS.
8. the device of stress release treatment on computer X-ray computed tomography (SPECT) system as claimed in claim 7, wherein said sound collection means is one, and it collects the noise of voice and scanning room simultaneously.
9. the device of stress release treatment on computer X-ray computed tomography (SPECT) system as claimed in claim 7, wherein said sound collection means comprises the first and second sound collection means, wherein the first sound collection means collects the noise of voice and scanning room simultaneously, and the second sound collection means collects the noise of scanning room.
10. the device of stress release treatment on computer X-ray computed tomography (SPECT) system as claimed in claim 7, described Denoising disposal device is further used for:
Analog/digital conversion is carried out to the sound signal received;
Identify noise pattern;
Suppress or stress release treatment according to noise pattern.
The device of 11. stress release treatment on computer X-ray computed tomography (SPECT) system as claimed in claim 9, described Denoising disposal device is further used for:
When only having noise signal and do not have noise signal, the sound signal received is utilized to carry out parameter calibration;
Measure the sound signal from the first sound collection means and the second sound collection means when patient speaks in scanning process;
Calculate the voice signal of patient after stress release treatment.
The device of 12. stress release treatment on computer X-ray computed tomography (SPECT) system as claimed in claim 9, comprises noise cancelling arrangement and communicator further; Wherein
Described Denoising disposal device is further used for:
Calculate antinoise signal;
Described communicator is used for antinoise signal to be sent to described noise cancelling arrangement;
Described noise cancelling arrangement is for playing antinoise signal with the noise in counteracting scanning room of patient's ear place.
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| CN105617534A (en) * | 2015-12-17 | 2016-06-01 | 郭凌飞 | Radiology department-used lifting-type special platform |
| EP3820370A4 (en) * | 2018-08-23 | 2021-09-01 | Shanghai United Imaging Healthcare Co., Ltd. | Systems and methods for controlling imaging device |
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| CN111785240B (en) * | 2020-08-03 | 2021-04-09 | 上海全景医学影像诊断中心有限公司 | Anti-phase interference filter active wave protection device for PET-MR working noise |
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Also Published As
| Publication number | Publication date |
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| CN104347063B (en) | 2019-12-17 |
| CN110648683A (en) | 2020-01-03 |
| CN110648683B (en) | 2023-05-23 |
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