CN100452067C - Medical image data transmission and three-dimension visible sysem and its implementing method - Google Patents
Medical image data transmission and three-dimension visible sysem and its implementing method Download PDFInfo
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- CN100452067C CN100452067C CNB2005100219950A CN200510021995A CN100452067C CN 100452067 C CN100452067 C CN 100452067C CN B2005100219950 A CNB2005100219950 A CN B2005100219950A CN 200510021995 A CN200510021995 A CN 200510021995A CN 100452067 C CN100452067 C CN 100452067C
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Abstract
The present invention discloses a medical image data transmitting and three-dimensional visible system and an implementing method. The present invention widens a single-machine and a single-person operation imaging diagnostic systems and uses an image data transmitting technology facing to a hospital department terminal. An image data processing function on a working station of a radiology department or an image department is expanded on the computer terminal in every department of a hospital, so a doctor directly obtains the image data of a patient on the terminal of the own department. The interactive operation of three-dimensional display, etc., is carried out, and use is very convenient and quick. The use efficiency and the use effect of the image data are enhanced. The present invention can assist the doctor to carry out diagnosis and treatment and realizes medical image data store and filmless use, and lots of human power and material resources are saved.
Description
[technical field]
The present invention relates to a kind of based on network 3-dimensional image computer-aided diagnosis system and implementation method, particularly transmission of medical image transmission wherein and three-dimension visible sysem and medical image and three-dimensional visualization implementation method.
[background technology]
Along with the development of medical skill and Medical Devices, medical image development of technology particularly, medical image is in clinical diagnosis, and role is increasing in treatment and the postoperative inspection, and the importance of check image is more and more obvious.And meanwhile, the medical image of present domestic most hospitals is to carry out storage and management with the form of film, 1., the cost height this medical image file mode exists tangible drawback:, about 15 yuan of the laser films of a 14mmX17mm, the about 200-300 of the charge of head medical image unit, the ratio of shared patient medical expense is higher; 2., the view data occupation space is bigger, most of hospitals all need to be equipped with one to two room and to be used to deposit patient's image film specially specially; 3., be not easy to the management of image data and search because film need manually search, more loaded down with trivial details, time-consuming; Simultaneously,, perhaps give back untimelyly, all can cause the imperfect of image data because film might lose in borrowing process or stained; 4., be unfavorable for patient's image data is added up, analyzed and studies because the iconography film is labor management, also very loaded down with trivial details for the statistics and analysis of disease, waste time and energy.In view of above-mentioned various reasons, general hospital is not high for the utilization factor of file film, and a part of hospital film that simply no longer files does not particularly nearly all file for the CT film.
At this problem, on high-end medical imaging device market, begun to occur some medical image data collecting device products at present, this type systematic is gathered, reads, stores, is managed with total digitalization, no film mode.At present all be equipped with large medical equipments such as CT, MRI in the stronger hospital of some financial strengths, also can be equipped with three dimensional display capabilities in the workstation that these equipment attach according to the requirement of hospital aspect, but general utility functions aspect the two-dimentional interactive operation a little less than, only provide image window width, the adjustment of window position etc. some in order to improving the simple functions module of image displaying quality, its basic effect still is before printing image film image to be carried out the adjustment of simple brightness, contrast.Workstation in the existing hospital image section is a single-set operation, its image data processing capacity is very weak, there is defective in image processing mode, most of image check and diagnostic procedure only limit to carry out on the dept. of radiology of hospital or image section workstation, and the doctor in charge often can't directly see 3-dimensional image, more impossiblely on 3-dimensional image, carry out interactive operation, can only adopt the two dimension of traditional film forms to show " reconstruct " 3-D view in doctor's brain.On the one hand can realize not having the film image data management on the dept. of radiology of hospital or image section workstation, the doctor in charge is also using film on the other hand, and the two is obviously unbecoming.
[summary of the invention]
Purpose of the present invention is exactly in order to overcome the above problems, and a kind of medical image transmission and The Visual Implementation method are provided, and to realize sharing of medical image, can convenient, fastly be applied in the clinical diagnosis, improves service efficiency and result of use.
For achieving the above object, the present invention proposes the implementation method of a kind of medical image transmission and three-dimensional visualization, comprise following steps:
A) data acquisition: gather medical image, generate view data by the medical image data acquisition system;
B) data storage: with image data storage in image data base; Or described view data is converted to the standard format of agreement, be stored in image data base;
C) data transmission: the image data management server side to monitor is from the data transfer request of section office's terminal, section office's terminal by authentication after, the image data management server end is opened data transport service, will reach section office's terminal under the view data;
D) data visualization is handled and shown: the view data of being obtained by the image data management server is carried out two dimension to section office's terminal or three-dimensional visualization is handled, and is presented on section office's terminal screen.
Described data transmission adopts Winsocket to carry out, and process is as follows:
(1) Socket server thread of section office's starting terminal proposes the request of data sharing, each port of the continual monitoring of image data management server;
(2) after the image data management server listens to the data sharing request of section office's terminal, start Socket client's thread, and send connection request;
(3) section office's terminal is agreed or the rejection data transmit, and agrees that then both sides begin communication, the image data management server under section office's terminal blit as data;
(4) section office's terminal is temporary in the data that receive in the Installed System Memory buffer zone, or the content in the buffer zone is filed deposit in the storage medium simultaneously.
Above-mentioned implementation method, described step B) in, the method of data storage: leave view data in hard disc of computer, deposit patient's essential information in database, attribute is deposited corresponding view data specially and is left path on the hard disc of computer in the correspondence database.At described step C) data transmission in, system at first by the essential information of patient in the searching database, finds the path of depositing of this patient image data from essential information, and then further reads patient's view data.
Above-mentioned implementation method, the port that image data management server and the terminal both sides of section office arrange to use in the described data transmission procedure, data structure, to contents such as abnormity processing; Wherein data structure comprises IP address, the port of section office's terminal, needs the file type of transmission, data length.
Above-mentioned implementation method, connection request in the described step (2) is meant the connection request instruction that is sent to the in-local system by the image data management server end, be connected to remote computer terminal by operating system by means of application programming interface (Windows API), request connects the transmission data.Described data transmission procedure adopts multithreading, and described multithreading comprises a main thread and several worker threads, and main thread and worker thread are carried out simultaneously, and described several worker threads comprise one or more server threads and client's thread.
The present invention expands unit, one man operation's imaging diagnosis system, employing is towards the image data transmission technology of hospital department terminal, image data processing capacity on dept. of radiology or the image section workstation is expanded on each section office's terminal of hospital, make the doctor on the terminal of own section office, directly obtain patient's image data, and carry out interactive operations such as 3-D display, use very convenient quick, improved the service efficiency and the result of use of image data, helped auxiliary doctor to diagnose and treat; Realize medical image data storage, the no filmization of using, saved a large amount of manpower and materials.
The present invention makes up the medical image three-dimensional display technique by means of the present invention system, realize remote computer auxiliary diagnosis and treatment, mode with data sharing extends on each doctor's of section office the terminal, make the clinician also can participate in the diagnostic imaging process directly, and no longer be confined to prior art, provide the imaging diagnosis report by hospital image section, the clinician reports definite therapeutic scheme whereby, therefore can improve the result of use of medical image, help the doctor to improve the efficient and the accuracy of diagnosis, treatment.
The medical image transmission can also improve the traditional medical image data management and the deficiency of use-pattern in the following aspects at least with three-dimension visible sysem: discharge and preserve the very big storage space that film needs; Save film spending and managerial cost thereof, thereby enter no film hospital's epoch; Can in the medical image data storehouse, put out model case easily in order, so that research, interchange and teaching; The auxiliary diagnosis function that can provide traditional medical diagnosis means to possess, as dynamic adjustment, the setting of image pseudo-colours, the diseased region of picture contrast, window width and window level, shading value measure automatically, image moves and rotation, medical information statistics, three-dimensional reconstruction, section demonstration, high-efficiency management and functions such as retrieval, Image communicating and remote medical consultation with specialists.For the prescription on individual diagnosis patient, can shorten the supervision time and check number of times, obtain check result as early as possible, win treatment time.Can obtain expert consultation by network, simultaneously can long preservation patient history data, be convenient to possible in the future further consultation and inquiry.
[description of drawings]
Fig. 1 is medical image transmission of the present invention and three-dimension visible sysem network topology structure synoptic diagram;
Fig. 2 is a medical image transfer process synoptic diagram of the present invention.
[embodiment]
The present invention is further described in more detail below in conjunction with drawings and the specific embodiments.
Owing to the objective of the invention is to realize that an energy is in full institute of a certain hospital scope or medical image collection and data distribution systems in hospital's branch scope, the major function that this system should possess is: the no filmization that realizes medical image, the remote transmission of image electronic data, the aftertreatment of two-dimensional medical images data, and the three-dimensional visualization of view data; Be convenient to remote diagnosis, improve diagnosis efficiency and accuracy.As shown in Figure 1, according to the topological structure of system, be: several modules such as data acquisition, data-switching, data storage, data transmission, data processing with system divides.
At present, the more common medical image data mode of medical system mainly contains: computerized tomography (CT Computed Tomography), nuclear magnetic resonance (MRI Magnetic Resonance Imaging), digital subtraction angiography (DSA Digital Subtraction Angiography), traditional X-ray line image and X line digitized video, PET (positron emission computerized tomography) (Positron EmissionTomography), single photon emission tomoscan (SPECT Single Photon EmissionTomography), B ultrasonic (B-Mode Ultrasound), colorful ultrasonic, endoscopic images (Endoscopy), micro-image (Microscopy), and the CR (Computed Radiography) that rises recent years, DR (Digital Radiography) digital picture or the like.These image modalities imaging mechanisms are not quite similar, the diagnostic purpose of imaging also has nothing in common with each other, lay particular emphasis on structure imaging as CT and MRI to human internal organ, PET, SPECT etc. then lay particular emphasis on the metabolism and the functional imaging of human body, also therefore make the spatial resolution of medical image and gray level resolution have difference.Image modalities is numerous, and its data requirement is scarcely same, and the imaging purpose is also different with the application scenario, for being furnished with the modal data equipment that meets the DICOM3.0 standard data interface, can directly carry out the secondary development of medical image on this basis; And other is not had the equipment of DICOM3.0 standard interface, by the auxiliary video data capture card, carry out A/D conversion after, can obtain DICOM format-pattern data by DICOM3.0 normal data switching software module again.
For other some medical image sources, as the iconography film, by the scanner that links to each other with image data server film is carried out digital collection, be converted to DICOM 3.0 standard format view data again after film is digitized as the bitmap format data.For JPEG and tiff format image is unified DICOM format-pattern data by DICOM 3.0 standard handovers equally.
For the location mode of medical image, generally can adopt dual mode: a kind of is that view data is left in the database with big binary mode.Another mode is: what deposit in database is patient's essential information, as patient's name, sex, prescription on individual diagnosis date etc., attribute is deposited corresponding patient image data specially and is left path on the hard disc of computer in the correspondence database, like this, we just can be by the essential information of patient in the searching database, can find the path of depositing of this patient image data from essential information, and then further read patient's view data.
For the image data transmission problem, solution is that the interface function that utilization Windows Sockets API provides realizes that idiographic flow as shown in Figure 2.Unified centralized stores and the management of being responsible for image data of server-side application, by the data transfer request of monitoring from client, the user cipher for the treatment of client ip address and port numbers and deciding through consultation in advance by server-side application by checking after, server-side application is promptly opened data transport service, disconnects annexation behind the DTD again.After data are transferred to section office's terminal, can carry out the two and three dimensions of further medical image handles, for doctor's clinical diagnosis provides supplementary means, thereby improve the efficient and the accuracy of clinical diagnosis, after diagnosis finishes, client application will be transferred to the image data deletion of this machine automatically, thereby finish data transfer request and computer-aided diagnosis process.
The basic process of view data (comprising other data files) transmission comprises the following aspects: data acquisition, data transmission, data acceptance and data presentation etc.The process of carrying out data transmission with Winsocket is as follows:
(1) Socket server thread of section office's starting terminal is monitored certain particular port, prepares to accept data; (the image data management server is monitored each port incessantly, and section office's terminal proposes the request of data sharing);
(2) the image data management server parallel seriesization (file is read in Installed System Memory) that opens file shows;
(3) Socket client's thread of image data management startup of server, and send connection request, the request here is meant the connection request instruction that is sent to the in-local system by data server end program, be connected to remote computer terminal by computer operating system by means of application programming interface (Windows API), request connects the transmission data;
(4) section office's terminal is agreed or the transmission of rejection data, agrees that then both sides begin communication, finishes data transmission;
(5) section office's terminal shows the content in the Installed System Memory buffer zone that receives and the content in the buffer zone is filed in the storage mediums such as depositing hard disk in;
(6) this data transfer operation of Data Transfer Done notice acceptance/transmit leg completes successfully, and is unusual according to prior definition process if any unusual generation.
Contents such as the port that both sides will arrange to use in the image transmission course, data structure.Wherein data structure mainly comprises IP address, the port of data section office terminal, needs the file type of transmission, data length, and to abnormity processing etc.
The image transmission course adopts multithreading.When system does not support multithreading, under asynchronous system, use multithreading, that is to say that application program and system can also respond other requests in data transmission procedure, in order to avoid cause system deadlock and system congestion.If the use method of synchronization is then finished in data transmission before (transition function returns), program and system will not respond the other system request.In Win32 system (Win98, WinNT, Win2K), introduced the notion of multithreading, such process (application program can comprise a plurality of processes) can comprise a plurality of threads, comprising a main thread and several worker threads, worker thread also can be performed when main thread is carried out like this, has so just simplified the design of system.The problem that should be noted that in the multithreading implementation procedure is exactly the communication of cross-thread, and in image real-time Transmission application system, worker thread comprises one or more server threads and client's thread.At first server end begins to monitor fixed port, section office's terminal can be sent connection request then, after receiving request, system promptly begins a new server thread, and finish Sockets and be connected with the request client, this moment, both sides can be transmitted data and control command, simultaneously former thread continues to monitor fixed port, repeats this step when new section office terminal request.Therefore, can have a plurality of connections at synchronization, promptly a plurality of section office terminal can be simultaneously and server communication, when the sign off thread also finishes thereupon.And because server thread also is a worker thread, thereby user's behavior of control program fully in communication process, be to continue transmission or stop transmission with decision.Section office's terminal is then fairly simple, only need finish initialization socket, request connection, data transmission, close several functions such as socket, and in thread, also needn't open new thread again, that is to say that a client can not simultaneously set up a plurality of Socket automatically with server and be connected.But a program can be opened a plurality of clients simultaneously, finishes and being connected of different server end.
The processing of medical image mainly comprises the two-dimensional process of view data and three dimensional display capabilities, refers to then that for two-dimensional process window width/window position (or brightness/contrast) adjustment, image rotation, image zoom, measurement, mark, the two dimension of image dissect auxiliary doctor such as demonstration and carry out accurately and the function of quick diagnosis; The view data 3-D display then refers to three-dimensional reconstruction is carried out in the volume data field of medical image, its main method comprises surperficial radiography display packing (SSD Surface Shaded Display) and maximum intensity projection method (MIPMaximum Intensity Projection), and SSD comprises that again the slice-level surface shows and voxel level surface shows.MIP comprises ray trace (Ray Tracing/Ray Tracking) and ray cast (RayCasting) algorithm again.Can also adopt another kind of 3 D displaying method:, can carry out three-dimensional to medical image space body data fields and dissect mixed display with the mixed display method that aforementioned two kinds of methods combine.All these functions can both be carried out accurately and quick diagnosis provides effective booster action the doctor, and the 2-D data processing and the three dimensional display capabilities of medical image differ from one another, can't the phase trans-substitution, and the two effect aspect auxiliary diagnosis all is indispensable.
Claims (5)
1. the implementation method of medical image transmission and three-dimensional visualization comprises following steps:
A) data acquisition: gather medical image, generate view data by the medical image data acquisition system;
B) data storage: with image data storage in image data base; Or described view data is converted to the standard format of agreement, be stored in image data base;
C) data transmission: the image data management server monitoring is from the data transfer request of section office's terminal, section office's terminal by authentication after, the image data management server is opened data transport service, will reach section office's terminal under the view data;
D) data visualization is handled and shown: the view data of being obtained by the image data management server is carried out two dimension to section office's terminal or three-dimensional visualization is handled, and is presented on section office's terminal screen;
It is characterized in that: described data transmission adopts Winsocket to carry out, and process is as follows:
(1) Socket server thread of section office's starting terminal proposes the request of data sharing, each port of the continual monitoring of image data management server;
(2) after the image data management server listens to the data sharing request of section office's terminal, start Socket client's thread, and send connection request;
(3) section office's terminal is agreed or the rejection data transmit, and agrees that then both sides begin communication, the image data management server under section office's terminal blit as data;
(4) section office's terminal is temporary in the data that receive in the Installed System Memory buffer zone, or the content in the buffer zone is filed deposit in the storage medium simultaneously.
2. implementation method as claimed in claim 1, it is characterized in that: described step B), the method of data storage: leave view data in hard disc of computer, deposit patient's essential information in database, attribute is deposited corresponding view data specially and is left path on the hard disc of computer in the correspondence database; At described step C) data transmission in, system at first by the essential information of patient in the searching database, finds the path of depositing of this patient image data from essential information, and then further reads patient's view data.
3. implementation method as claimed in claim 1 or 2 is characterized in that: the port that image data management server and the terminal both sides of section office arrange to use in the described data transmission procedure, data structure, to the abnormity processing content; Wherein data structure comprises IP address, the port of section office's terminal, needs the file type of transmission, data length.
4. implementation method as claimed in claim 1, it is characterized in that: the connection request in the described step (2) is meant the connection request instruction that is sent to the in-local system by the image data management server, be connected to remote computer terminal by operating system by means of application programming interface Windows API, request connects the transmission data.
5. implementation method as claimed in claim 1, it is characterized in that: described data transmission procedure adopts multithreading, this multithreading comprises a main thread and several worker threads, main thread and worker thread are carried out simultaneously, and described several worker threads comprise one or more server threads and client's thread.
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