CN109223014A - Obtain method, detector device, medical supply and the storage medium of medical image - Google Patents
Obtain method, detector device, medical supply and the storage medium of medical image Download PDFInfo
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- A61B6/5235—Devices using data or image processing specially adapted for radiation diagnosis involving processing of medical diagnostic data combining image data of a patient, e.g. combining a functional image with an anatomical image combining images from the same or different ionising radiation imaging techniques, e.g. PET and CT
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Abstract
This application involves a kind of methods for obtaining medical image, comprising: receives ray signal, and generates the first signal and second signal according to ray signal；Signal characteristic based on the first signal identifies the first ray in ray signal, and the second ray is identified in ray signal based on the signal characteristic of second signal；The second image is obtained according to first the first image of signal acquisition and/or according to second signal；Wherein, ray signal includes at least the first ray and the second ray, and the first signal is the response signal generated according to the first ray, and second signal is the response signal generated according to the second ray, and the first signal has different signal characteristics from second signal.The signal characteristic of above method response signal according to produced by different rays is different, the corresponding medical image of every kind of ray is obtained respectively, to obtain the medical image of different modalities by a set of detector and image processing equipment, the complexity and use cost of equipment is effectively reduced.
Description
Technical field
The present invention relates to medical instruments fields, more particularly to a kind of method for obtaining medical image, detector device, doctor
Learn equipment and storage medium.
Background technique
Passing through some multi-modal image documentation equipments such as Positron emission computed tomography (Positron
Emission Computed Tomography-Computed Tomography, abbreviation PET-CT) etc. when being scanned imaging,
The method of traditional acquisition medical image obtains CT image generally by the detector and image processing equipment of CT, then passes through
The detector and image processing equipment of PET obtains PET image, and two sets of equipment are mutually indepedent, lead to answering for multi-modality imaging equipment
Miscellaneous degree and higher operating costs, and the medical image of different modalities can not be obtained simultaneously.
Summary of the invention
Based on this, it is necessary in view of the above technical problems, provide it is a kind of obtain the method for medical image, detector device,
Medical supply and storage medium can obtain the medical image of different modalities by a set of detector and image processing equipment, have
Effect reduces the complexity and use cost of equipment.
A method of obtaining medical image, comprising:
Ray signal is received, and the first signal and second signal are generated according to the ray signal；
The second image is obtained according to first image of the first signal acquisition and/or according to the second signal；
Wherein, the ray signal includes at least the first ray and the second ray, and first signal is according to described the
The response signal that one ray generates, the second signal is the response signal generated according to second ray.
The method of above-mentioned acquisition medical image has different signals special according to response signal caused by different rays
Sign obtains corresponding medical image according to the response signal of every kind of ray respectively, so as to pass through a set of detector and image
Processing equipment obtains the medical image of different modalities, effectively reduces the complexity and use cost of equipment.
First signal has different signal characteristics from the second signal in one of the embodiments, described
Signal characteristic includes signal strength and/or characteristics of signals curve, the method also includes:
Signal characteristic based on first signal identifies the first ray in the ray signal, is based on described second
The signal characteristic of signal identifies the second ray in the ray signal.
In one of the embodiments, the method also includes:
The first image is merged with second image to obtain fusion medical image.
First ray is X-ray in one of the embodiments,；Second ray is gamma ray.
A kind of detector device, comprising:
Detecting module generates the first signal and second signal for receiving ray signal, and according to the ray signal；
Image processing module, for being obtained according to first image of the first signal acquisition and/or according to the second signal
Take the second image；
Wherein, the ray signal includes at least the first ray and the second ray, and the detecting module is according to described first
Ray generates first signal, and the detecting module generates the second signal according to second ray.
Above-mentioned detector device has different signal characteristics according to response signal caused by different rays, respectively root
Corresponding medical image is obtained according to the response signal of every kind of ray, so as to obtain by a set of detector and image processing equipment
The medical image for taking different modalities effectively reduces the complexity and use cost of equipment.
First signal has different signal characteristics from the second signal in one of the embodiments, described
Signal characteristic includes signal strength and/or characteristics of signals curve, the detector device further include:
Ray identification module is communicated to connect with the detecting module, for being existed according to the signal characteristic of first signal
First ray is identified in the ray signal, is known in the ray signal according to the signal characteristic of the second signal
It Chu not second ray.
Described image processing module is also used to the first image and second image in one of the embodiments,
It is merged to obtain fusion medical image.
First ray is X-ray in one of the embodiments,；Second ray is gamma ray.
A kind of medical supply including memory, processor and stores the meter that can be run on a memory and on a processor
The step of calculation machine program, the processor realizes the above method when executing described program.
A kind of computer readable storage medium, is stored thereon with computer program, realization when which is executed by processor
The step of above method.
Detailed description of the invention
Fig. 1 is the flow diagram that the method for medical image is obtained in one embodiment；
Fig. 2 is the flow diagram that the method for medical image is obtained in another embodiment；
Fig. 3 is the structural schematic diagram of detector device in one embodiment；
Fig. 4 is the structural schematic diagram of detector device in another embodiment.
Specific embodiment
It is with reference to the accompanying drawings and embodiments, right in order to which the objects, technical solutions and advantages of the application are more clearly understood
The application is further elaborated.It should be appreciated that specific embodiment described herein is only used to explain the application, and
It is not used in restriction the application.
Fig. 1 is the flow diagram that the method for medical image is obtained in one embodiment, as shown in Figure 1, a kind of acquisition is cured
The method for learning image, comprising:
Step S120: ray signal is received, and the first signal and second signal are generated according to ray signal；Wherein, ray
Signal includes at least the first ray and the second ray, and the first signal is the response signal generated according to the first ray, second signal
For the response signal generated according to the second ray.
Specifically, in multi-modality imaging equipment, the medical image of different modalities generally pass through different ray carry out at
Picture, therefore at least two rays can be generated in imaging process, such as X is as ray or gamma (γ) ray etc..It is being scanned
When imaging, the detecting module of detector can receive the ray signal comprising a variety of rays, wherein the specific type sum number of ray
Amount can be determined according to actual scanning situation.After receiving ray signal, corresponding response letter can be generated according to every kind of ray
Number, since the characteristics such as the energy, wavelength, frequency of different rays are not generally identical, so response letter caused by different rays
Number also there is different signal characteristics.
Step S140: the second image is obtained according to first the first image of signal acquisition and/or according to second signal.
Specifically, the feature of the response signal generated due to different rays is had any different, and can be divided from response signal
From response signal caused by various rays is extracted, the type and quantity of ray signal can be true according to actual scanning situation
It is fixed, such as wherein may include two kinds of signals such as X-ray signals and gamma ray signal, it can also simultaneously include a variety of rays
Signal.Image reconstruction process is carried out respectively according to the response signal of every kind of ray and its ray type, to obtain every kind of ray letter
Number medical image, to obtain the medical image of a variety of different modalities simultaneously.It, can will thereon for obtained medical image
Hospital system is reached so that doctor or operator check, image co-registration can also be carried out to it, to obtain fusion medical image.
The method of above-mentioned acquisition medical image has different signals special according to response signal caused by different rays
Sign obtains corresponding medical image according to the response signal of every kind of ray respectively, so as to pass through a set of detector and image
Processing equipment obtains the medical image of different modalities, effectively reduces the complexity and use cost of equipment.
Fig. 2 is the flow diagram that the method for medical image is obtained in another embodiment, as shown in Fig. 2, in this implementation
In example, wherein step S220, S260 can be identical as the corresponding steps difference in above embodiments, the acquisition medicine of the present embodiment
The method of image further include:
Step S240: the signal characteristic based on the first signal identifies the first ray in ray signal, based on the second letter
Number signal characteristic the second ray is identified in ray signal.
Specifically, it after generating response signal according to ray, is generated according to preset signal characteristic with according to ray
Response signal compare.Signal characteristic is the inherent characteristic that response signal is generated after all kinds of rays are received by a detector, letter
Number feature can according to all kinds of rays definition and relevant criterion determine that the signal characteristic of all kinds of rays can store in hard disk
Or in the storage mediums such as flash memory, response signal and the signal characteristic of all kinds of rays are compared, a threshold value can be set, if ringing
The signal characteristic difference of induction signal and a certain ray is less than this threshold value, then it is believed that response signal is the signal that the ray generates.
So that acquired response signal be classified, response letter corresponding to various rays included in it is extracted respectively
Number, and determine its ray type, to complete the identification to ray signal.The present embodiment can include automatically a variety of rays
The type of each ray is identified in signal, to obtain the corresponding medical image of every kind of ray respectively, or obtains a variety of rays
Fusion medical image.
Further, in one embodiment, above-mentioned signal characteristic includes signal strength and/or characteristics of signals curve.Letter
Number feature is the feature for the response signal that different rays generate, due to the general not phase such as energy, wavelength, frequency of different rays
Together, such as in general CT equipment the x-ray photon energy of bulb transmitting is about 140KeV, and positive electron generates in PET device
Gammaphoton energy is about 511KeV, and the wave-length coverage of X-ray is between 0.001 nanometer to 10 nanometers, and the wave of gamma ray
It is shorter than 0.01 angstrom long, therefore response signal caused by different types of ray generally has different signal strength and signal
The signal characteristics such as characteristic curve, it is possible to judged by signal strength to response signal and characteristics of signals curve etc.,
To identify the type of emergent ray.It can understand again, signal characteristic can also include between ray used in other medical imagings
The more obvious feature of difference is as judgment basis, however it is not limited to signal strength and characteristics of signals curve.
In one embodiment, the method for medical image is obtained further include:
Step S280: the first image is merged with the second image to obtain fusion medical image.
Specifically, after obtaining medical image corresponding to different rays, real time fusion can be carried out to it and is merged
Medical image, such as after obtaining PET image corresponding to the corresponding CT image of X-ray and gamma ray respectively, by the two into
Row fusion obtains PET-CT image.By then passing through the signal for the different rays that same detector obtains, and image is carried out simultaneously
Reconstruction process, therefore real time fusion can be carried out to the medical image of different modalities in the application, without respectively obtaining doctor
It is overlapped reconstruction again after learning image, improves the efficiency of multi-modal scanning imagery process.Melt it is understood that carrying out image
The type and quantity of the medical image of conjunction can according in ray signal ray type and quantity determine, however it is not limited to CT image
With the fusion of PET image.
In one embodiment, above-mentioned first ray is X-ray；Above-mentioned second ray is gamma ray.
Specifically, Positron emission computed tomography (Positron Emission Computed
Tomography-Computed Tomography, abbreviation PET-CT) it is a kind of common multi-modality imaging equipment, wherein CT is set
Standby to be imaged by X-ray, PET device is imaged by gamma (γ) ray, therefore detector in the present embodiment
Equipment is PET-CT detector, includes the first ray X-ray and the second ray gamma ray in ray signal, receives X at the same time
After ray and gamma ray, response signal is generated, response signal i.e. the first signal and the gamma including X-ray is penetrated in response signal
Response signal, that is, second signal of line, and image reconstruction process is carried out according to the first signal and obtains CT image, according to second signal
It carries out image reconstruction process and obtains PET image, two kinds of images can also be merged in real time, to obtain PET-CT image.
Fig. 3 is the structural schematic diagram of detector device in one embodiment, as shown in figure 3, in one embodiment, detection
Device equipment 500 includes: detecting module 520, generates the first signal and the second letter for receiving ray signal, and according to ray signal
Number；Wherein, ray signal includes at least the first ray and the second ray, and detecting module generates the first signal according to the first ray,
Detecting module generates second signal according to the second ray；Image processing module 540, for according to first the first image of signal acquisition
And/or the second image is obtained according to second signal.
Specifically, detecting module 520 receives ray signal, includes produced by least two different rays in ray signal
Signal, detecting module 520 to obtain ray and generates corresponding response signal by receiving, and receives the first ray and generates first and believes
Number, receive the second ray and generate second signal, the type of the first ray and the second ray can determines according to actual conditions, such as
It may include X-ray and gamma-rays etc. in ray signal, detecting module 520 believes the response comprising the first signal and the second signal
Number it is sent to image processing module 540.Image processing module 560 and detecting module 520 communicate to connect, and receive the first signal and the
After binary signal, image reconstruction process is carried out to the first signal and the second signal respectively, to obtain the first image and the second image.?
In one embodiment, above-mentioned image processing module 560 can also carry out fusion treatment to the first image and the second image in real time, from
And obtain fusion medical image.
In one embodiment, above-mentioned first ray is X-ray, and above-mentioned second ray is gamma ray.
Specifically, Positron emission computed tomography (Positron Emission Computed
Tomography-Computed Tomography, abbreviation PET-CT) it is a kind of common multi-modality imaging equipment, wherein CT is set
Standby to be imaged by X-ray, PET device is imaged by gamma ray, therefore detector device in the present embodiment
It include X-ray and gamma ray in ray signal for PET-CT detector, detecting module can receive X-ray and gamma simultaneously
Ray simultaneously generates response signal, is being responded according to the difference between the signal characteristic of X-ray and the signal characteristic of gamma ray
Distinguish the response signal of X-ray and the response signal of gamma ray in signal, and by the response signal and gamma ray of X-ray
Response signal be sent to image processing module.Image processing module according to received X-ray response signal carry out image
Reconstruction process obtains CT image, according to received gamma ray response signal carry out image reconstruction process obtain PET image,
Image processing module can also in real time merge two kinds of images, to obtain PET-CT image.
It is understood that the first ray and the second ray are not limited to X-ray and gamma ray, it is also possible to other use
In the ray type of medical imaging, detector device can be the imaging device of certain two kinds specific rays of identification, be also possible to
Various rays can be identified, so as to carry out the acquisition of a variety of Multimodal medical images by detector device, to realize more
Extensive purposes.
Above-mentioned detector device 500 has different signal characteristics according to response signal caused by different rays, respectively
Corresponding medical image is obtained according to the response signal of every kind of ray, so as to pass through a set of detector and image processing equipment
The medical image for obtaining different modalities, effectively reduces the complexity and use cost of equipment.
In one embodiment, the first signal has different signal characteristics from second signal, and signal characteristic includes signal
Intensity and/or characteristics of signals curve, above-mentioned detector device 500 further include:
Ray identification module is communicated to connect with detecting module 520, for being believed according to the signal characteristic of the first signal in ray
The first ray is identified in number, and the second ray is identified in ray signal according to the signal characteristic of second signal；
After ray identification module receives response signal, it is compared with pre-stored signal characteristic, signal characteristic
For the feature for the response signal that different rays generate, due to general not identical, the institute such as energy, wavelength, frequency of different rays
With response signal caused by different rays have different signal characteristics, signal characteristic generally may include signal strength and
Characteristics of signals curve etc., ray identification module is based on the received after the signal characteristic comparison of response signal and various rays, in sound
The first signal and the second signal are identified in induction signal, and determine the ray type of the first ray and the second ray respectively.
Fig. 4 is the structural schematic diagram of detector device in another embodiment, as shown in figure 4, in the present embodiment, detection
Device equipment 600 includes detecting module 620 and image processing module (not identifying in figure), can be with the phase in above embodiments
Structure is answered to distinguish identical, the detector device 600 of the present embodiment further include: detector rack 680 is used to support detecting module
620, multiple detecting modules 620 are arranged in a ring to be arranged in detector rack 680.
Specifically, in detector device 600, including multiple detecting modules 620, multiple detecting modules 620 are arranged in a ring
Cloth forms detection ring, and detection ring is arranged in detector rack 680, and screw etc. can be passed through by detecting ring and detector rack 680
Structure is fixedly connected, and can also be flexibly connected by position adjusting mechanism etc., to facilitate the position of detector device 600 to adjust.
Image processing module can be set in detector rack 680, can also be placed outside other positions.Multiple detector devices 600
Detection ring can also be aligned to form detector array, to reach more scanning imagery effect.
In one embodiment, a kind of medical supply is provided, including memory, processor and storage are on a memory and can
The computer program run on a processor, processor execute following steps when executing the program: reception ray signal, and according to
Ray signal generates the first signal and second signal；It is obtained according to first the first image of signal acquisition and/or according to second signal
Second image；Wherein, ray signal includes at least the first ray and the second ray, and the first signal is to be generated according to the first ray
Response signal, second signal are the response signal generated according to the second ray, and the first signal has different letters from second signal
Number feature.
In one embodiment, a kind of computer readable storage medium is provided, is deposited on the computer readable storage medium
Computer program is contained, which may make processor to execute following steps when being executed by processor: receiving ray signal, and root
The first signal and second signal are generated according to ray signal；It is obtained according to first the first image of signal acquisition and/or according to second signal
Take the second image；Wherein, ray signal includes at least the first ray and the second ray, and the first signal is to be generated according to the first ray
Response signal, second signal is the response signal generated according to the second ray, and the first signal has different from second signal
Signal characteristic.
It is above-mentioned that the computer-readable restriction for depositing storage medium and computer equipment may refer to above for method
Specific restriction, details are not described herein.
It should be noted that those of ordinary skill in the art will appreciate that realizing all or part of stream in the above method
Journey is relevant hardware can be instructed to complete by computer program, which can be stored in one and computer-readable deposit
In storage media；Above-mentioned program is when being executed, it may include such as the process of the embodiment of above-mentioned each method.Wherein, above-mentioned storage is situated between
Matter can be magnetic disk, CD, read-only memory (Read-Only Memory, abbreviation ROM) or random access memory
(Random Access Memory, abbreviation RAM) etc..
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The several embodiments of the application above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the concept of this application, various modifications and improvements can be made, these belong to the protection of the application
Range.Therefore, the scope of protection shall be subject to the appended claims for the application patent.
Claims (10)
1. a kind of method for obtaining medical image characterized by comprising
Ray signal is received, and the first signal and second signal are generated according to the ray signal；
The second image is obtained according to first image of the first signal acquisition and/or according to the second signal；
Wherein, the ray signal includes at least the first ray and the second ray, and first signal is to penetrate according to described first
The response signal that line generates, the second signal is the response signal generated according to second ray.
2. the method according to claim 1, wherein first signal is from the second signal with different
Signal characteristic, the signal characteristic include signal strength and/or characteristics of signals curve, the method also includes:
Signal characteristic based on first signal identifies the first ray in the ray signal, is based on the second signal
Signal characteristic the second ray is identified in the ray signal.
3. the method according to claim 1, wherein further include:
The first image is merged with second image to obtain fusion medical image.
4. the method according to claim 1, which is characterized in that first ray is X-ray；Institute
Stating the second ray is gamma ray.
5. a kind of detector device characterized by comprising
Detecting module generates the first signal and second signal for receiving ray signal, and according to the ray signal；
Image processing module, for obtaining the according to first image of the first signal acquisition and/or according to the second signal
Two images；
Wherein, the ray signal includes at least the first ray and the second ray, and the detecting module is according to first ray
First signal is generated, the detecting module generates the second signal according to second ray.
6. detector device according to claim 5, which is characterized in that first signal has with the second signal
Different signal characteristics, the signal characteristic include signal strength and/or characteristics of signals curve, and the detector device also wraps
It includes:
Ray identification module, with the detecting module communicate to connect, for according to the signal characteristic of first signal described
First ray is identified in ray signal, is identified in the ray signal according to the signal characteristic of the second signal
Second ray.
7. detector device according to claim 5, which is characterized in that described image processing module is also used to described
One image is merged with second image to obtain fusion medical image.
8. the detector device according to any one of claim 5 to 7, which is characterized in that first ray is penetrated for X
Line；Second ray is gamma ray.
9. a kind of medical supply including memory, processor and stores the calculating that can be run on a memory and on a processor
Machine program, which is characterized in that the processor realizes any one of Claims 1-4 the method when executing described program
The step of.
10. a kind of computer readable storage medium, is stored thereon with computer program, which is characterized in that the program is by processor
The step of any one of Claims 1-4 the method is realized when execution.
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