WO2022017084A1 - 一种获取dicom文件的方法、装置和系统 - Google Patents

一种获取dicom文件的方法、装置和系统 Download PDF

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Publication number
WO2022017084A1
WO2022017084A1 PCT/CN2021/100437 CN2021100437W WO2022017084A1 WO 2022017084 A1 WO2022017084 A1 WO 2022017084A1 CN 2021100437 W CN2021100437 W CN 2021100437W WO 2022017084 A1 WO2022017084 A1 WO 2022017084A1
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Prior art keywords
data
dicom
dicom file
data packet
medical imaging
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PCT/CN2021/100437
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English (en)
French (fr)
Inventor
陈颀潇
张豪
彭嵩阳
瞿尧
徐野
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西门子（中国）有限公司
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Publication of WO2022017084A1 publication Critical patent/WO2022017084A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/06—Protocols specially adapted for file transfer, e.g. file transfer protocol [FTP]
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/10—File systems; File servers
    • G06F16/18—File system types
    • G06F16/182—Distributed file systems
    • G06F16/184—Distributed file systems implemented as replicated file system
    • G—PHYSICS
    • G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
    • G16H—HEALTHCARE INFORMATICS, i.e. INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR THE HANDLING OR PROCESSING OF MEDICAL OR HEALTHCARE DATA
    • G16H30/00—ICT specially adapted for the handling or processing of medical images
    • G16H30/20—ICT specially adapted for the handling or processing of medical images for handling medical images, e.g. DICOM, HL7 or PACS
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/10—Protocols in which an application is distributed across nodes in the network
    • H04L67/1095—Replication or mirroring of data, e.g. scheduling or transport for data synchronisation between network nodes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks

Definitions

  • the present invention relates to the technical field of medical equipment, and in particular, to a method, device and system for acquiring medical digital imaging and communications (DICOM) files.
  • DICOM medical digital imaging and communications
  • DICOM is an international standard for medical images and related information. It defines a medical image format that can be used for data exchange with a quality that meets clinical needs.
  • DICOM is widely used in radiology, cardiovascular imaging and radiological diagnosis and treatment equipment (such as X-ray equipment, CT equipment, magnetic resonance equipment, ultrasound equipment, etc.), and has been widely used in medical fields such as ophthalmology and dentistry. application.
  • DICOM files not only contain information about the image itself, but also carry a lot of medical-related information.
  • the introduction and implementation of the DICOM standard simplifies the realization of medical image information exchange, and promotes the research and development of Image Archiving and Communication Systems (PACS).
  • PACS Image Archiving and Communication Systems
  • the main task of PACS is to digitize a large number of daily medical images (including images produced by nuclear magnetic resonance, CT, ultrasound, various X-ray machines, various infrared instruments, microscopes and other equipment) through various interfaces. Save it, you can quickly recall medical images when needed, and add some auxiliary diagnosis management functions.
  • the embodiments of the present invention provide a method, apparatus and system for acquiring a DICOM file.
  • a method of obtaining DICOM files including:
  • a DICOM file is extracted from the replicated data package when a predetermined DICOM file characteristic is detected from the replicated data package.
  • the embodiment of the present invention can extract the DICOM file based on the duplicated data packet of the data packet sent by the medical imaging device, and can obtain the DICOM file without relying on the PACS.
  • the obtaining of the duplicate data packet of the data packet provided by the data duplication device and sent by the medical imaging device includes:
  • the replicated data packet is generated based on the data packet sent by the medical imaging device;
  • the replicated data packet is obtained from the network TAP.
  • a duplicate data packet of the data packet sent by the medical imaging device can be conveniently generated.
  • the obtaining of the replicated data packets of the data packets provided by the data replication device and sent by the medical imaging device includes:
  • a duplicate data packet of the data packet sent by the medical imaging device is acquired via the mirror port of the first port.
  • the duplicate data packet of the data packet sent by the medical imaging device can be conveniently generated.
  • the predetermined DICOM file characteristic detected from the replication data packet includes at least one of the following:
  • a DICOM prefix equivalent to the first predetermined character is detected from the replicated data packet
  • a DICOM prefix equivalent to the first predetermined character and a data type field equivalent to the second predetermined character are detected from the duplicated data packet.
  • DICOM files can be easily identified by detecting the DICOM prefix.
  • the embodiment of the present invention can accurately identify the DICOM file by comprehensively detecting the DICOM prefix and the data type field.
  • a device for obtaining DICOM files comprising:
  • an acquisition module which is adapted to acquire the replicated data packets of the data packets provided by the data replication device and sent by the medical imaging device;
  • An extraction module adapted to extract a DICOM file from the replicated data packet when a predetermined DICOM file characteristic is detected from the replicated data packet.
  • the embodiment of the present invention can extract the DICOM file based on the duplicated data packet of the data packet sent by the medical imaging device, and can obtain the DICOM file without relying on the PACS.
  • the acquisition module is adapted to acquire the duplicate data packets of the data packets sent by the medical imaging device from the network TAP arranged between the medical imaging device and the data exchange device.
  • a duplicate data packet of the data packet sent by the medical imaging device can be conveniently generated.
  • the acquisition module is adapted to acquire, from a mirror port of a first port of a data exchange device connected to a medical imaging device, a duplicate data packet of a data packet sent by the medical imaging device, wherein the first The port is connected to the PACS.
  • the duplicate data packet of the data packet sent by the medical imaging device can be conveniently generated.
  • an extraction module adapted when a DICOM prefix equivalent to the first predetermined character is detected from the duplicate data packet, or when a DICOM prefix equivalent to the first predetermined character is detected from the duplicate data packet and a data type field equivalent to the second predetermined character, extract the DICOM file from the copied data packet.
  • DICOM files can be easily identified by detecting the DICOM prefix.
  • the embodiment of the present invention can accurately identify the DICOM file by comprehensively detecting the DICOM prefix and the data type field.
  • a system for obtaining DICOM files including:
  • the network TAP which is connected to the medical imaging device, is adapted to generate duplicate data packets based on the data packets sent by the medical imaging device;
  • a data exchange device which is connected to the network test access point, and is adapted to send data packets sent by the medical imaging device to the PACS;
  • a device for obtaining a DICOM file connected to a network TAP, is adapted to obtain the duplicated data packet, and when a predetermined DICOM file characteristic is detected from the duplicated data packet, extract the DICOM file from the duplicated data packet.
  • the embodiment of the present invention can extract the DICOM file based on the duplicated data packet of the data packet sent by the medical imaging device, and can obtain the DICOM file without relying on the PACS. Furthermore, through the network TAP arranged between the medical imaging device and the data exchange device, a duplicate data packet of the data packet sent by the medical imaging device can be conveniently generated.
  • a system for obtaining DICOM files including:
  • a data exchange device which is connected to the medical imaging device, and includes a first port connected to the PACS and a mirror port of the first port;
  • a device for obtaining a DICOM file which is connected to the mirror port, and is adapted to obtain, from the mirror port, a copy data packet of the data packet sent by the medical imaging device, which is sent to the PACS via the first port, when the copy data packet is obtained from the copy data packet.
  • the DICOM file is extracted from the replicated data package.
  • the embodiment of the present invention can extract the DICOM file based on the duplicated data packet of the data packet sent by the medical imaging device, and can obtain the DICOM file without relying on the PACS. Moreover, through the data exchange device with the port mirroring function, the duplicate data packet of the data packet sent by the medical imaging device can be conveniently generated.
  • a device for obtaining a DICOM file comprising a processor, a memory, and a computer program stored on the memory and running on the processor, the computer program being executed by the processor to achieve any of the above.
  • the method described above to obtain DICOM files comprising a processor, a memory, and a computer program stored on the memory and running on the processor, the computer program being executed by the processor to achieve any of the above.
  • the embodiment of the present invention also proposes a device with a processor-memory architecture, which can obtain DICOM files without relying on PACS, has a wide range of applications, is easy to implement, and can save costs.
  • a computer-readable storage medium stores a computer program on the computer-readable storage medium, and when the computer program is executed by a processor, implements the method for obtaining a DICOM file according to any one of the above.
  • the embodiment of the present invention also proposes a computer-readable storage medium containing a computer program, which can obtain DICOM files without relying on PACS, has a wide range of applications, is easy to implement, and can also save costs.
  • FIG. 1 is a flowchart of a method for acquiring a DICOM file according to an embodiment of the present invention.
  • FIG. 2 is a schematic diagram of the DICOM file format.
  • FIG. 3 is a block diagram of an apparatus for acquiring a DICOM file according to an embodiment of the present invention.
  • FIG. 4 is a first exemplary structural diagram of a system for acquiring a DICOM file according to an embodiment of the present invention.
  • FIG. 5 is a second exemplary structural diagram of a system for acquiring a DICOM file according to an embodiment of the present invention.
  • FIG. 6 is a block diagram of an apparatus for obtaining a DICOM file with a processor-memory architecture according to an embodiment of the present invention.
  • DICOM file 101 ⁇ 102 step 20 DICOM file 31 DICOM file header 32 DICOM Data Collection twenty one Introduction to the document twenty two DICOM prefix twenty three file information element twenty four data element 41 DICOM label 42 Value representation field 43 value long field 44 value field 300 Device for obtaining DICOM files 301 get module 302 Extract module 50 System for obtaining DICOM files 51 medical imaging equipment 52 Network TAP 53 Device for obtaining DICOM files 54 data exchange equipment 55 PACS 60 System for obtaining DICOM files 61 medical imaging equipment 62 data exchange equipment 621 first port 622 mirror port 63 PACS 64 Device for obtaining DICOM files 600 Device for obtaining DICOM files 601 processor 602 memory
  • the applicant has found that in the prior art, there are many improvements due to the reliance on PACS to obtain DICOM files.
  • the embodiments of the present invention propose a technical solution for independently acquiring DICOM files without relying on PACS.
  • FIG. 1 is a flowchart of a method for acquiring a DICOM file according to an embodiment of the present invention. The method is suitable for execution by a device that acquires DICOM files that is not included in the PACS.
  • the method includes:
  • Step 101 Acquire a copy data package of the data package provided by the data copy device and sent by the medical imaging device.
  • medical imaging equipment refers to various instruments that use various media as information carriers to reproduce the internal structure of the human body as images, and the image information has a spatial and temporal distribution of the actual structure of the human body.
  • medical imaging equipment may include X-ray equipment, CT equipment, magnetic resonance equipment, ultrasound equipment, and the like.
  • the medical imaging device can generate DICOM files, and encapsulate the DICOM files into data packets based on a predetermined transmission protocol (eg, TCP/IP protocol or CAN protocol, etc.) or router, etc.) to send the packet out, say to a PACS system.
  • a predetermined transmission protocol eg, TCP/IP protocol or CAN protocol, etc.
  • the data replication device is used to replicate the data packets generated by the medical imaging device.
  • the apparatus for obtaining the DICOM file may obtain, from the data copying device, a duplicated data packet of the data packet sent by the medical imaging device.
  • a duplicate data packet is generated based on a data packet sent by the medical imaging device; and the duplicate data packet is acquired from the network TAP.
  • the data replication device may be implemented as a TAP arranged between the medical imaging device and the data exchange device.
  • the input port of the TAP is connected with the medical imaging device to receive data packets sent by the medical imaging device.
  • the network TAP generates duplicate data packets based on the data packets sent by the medical imaging device.
  • the network TAP has two output ports, and one of the output ports is connected to the data exchange device to send the data packets sent by the medical imaging device to the data exchange device, so that the data exchange device sends the data packets, such as to the PACS system ;
  • the other output port is connected to the device that obtains the DICOM file, thereby sending a copy data packet to the device that obtains the DICOM file.
  • the data packet sent by the medical imaging device is sent to the PACS via the first port in the data exchange device connected to the medical imaging device; the data packet sent by the medical imaging device is obtained via the mirror port of the first port. Copy the packet.
  • the data duplication device may be implemented as a data exchange device with a port mirroring function arranged to be connected with the medical imaging device.
  • the input port of the data exchange device is connected with the medical imaging device to receive data packets sent by the medical imaging device.
  • the data traffic of one or more source ports on the data switching device can be forwarded to a designated port to monitor the network, where the designated port is called a mirroring port.
  • the data exchange device can be embodied as a switch or a router, and so on.
  • the data exchange device has an input port to receive data packets sent by the medical imaging device.
  • the data exchange device has two ports (both output ports), wherein the first port is connected to the PACS to send the data packets sent by the medical imaging device to the PACS system; the second port is a mirror port of the first port.
  • the mirror port is connected to the device that acquires the DICOM file, so as to transmit the duplicate data packet of the data packet output via the first port to the device that acquires the DICOM file.
  • Step 102 When a predetermined DICOM file feature is detected from the replicated data package, extract the DICOM file from the replicated data package.
  • the predetermined DICOM file characteristics detected from the replication data packet include at least one of the following:
  • a DICOM prefix equal to the first predetermined character is detected from the duplicated data packet.
  • DICOM files can be easily identified by detecting the DICOM prefix.
  • the embodiment of the present invention can accurately identify the DICOM file by comprehensively detecting the DICOM prefix and the data type field.
  • DICOM files refer to medical files stored in accordance with the DICOM standard.
  • the fifth part of the DICOM standard introduces its data structure, defines a data set (Data Set) to hold the information object definition (IOD), and the data set consists of multiple data elements (Data Element).
  • FIG. 2 is a schematic diagram of the DICOM file format. As shown in FIG. 2 , the DICOM file 20 includes a DICOM file header 31 and a DICOM data set 32 .
  • the DICOM file header 31 contains relevant information identifying the data set, and each DICOM file includes a file header.
  • the DICOM file header 31 contains relevant information identifying the data set.
  • the DICOM file header 31 includes: (1), a file introduction 21, which is composed of 128 bytes; (2), a DICOM prefix 22, which can be judged according to whether a character string with a length of 4 bytes is equal to "DICM" Whether the file is a DICOM file; (3), the file information element 23.
  • the DICOM data set 32 is the main component of the DICOM file 31 and contains a plurality of data elements 24 .
  • Each data element 24 includes: (1) DICOM tag (TAG) 41: the identifier for storing the item of information; (2), value representation (VR) field 42: storing the data type describing the item of information; ( 3), the value length field 43: storing the data length describing the item of information; (4), the value (value) field 44: storing the data value describing the item of information.
  • the DICOM standard defines 27 basic data types in PS3.5, that is, 27 VRs are defined.
  • the value representation field 42 may include: (1), code string (Code String, CS); (2), short string (Short String, SH); (3), long string (Long String, LO) ); (4), Short Text (ST); (5), Long Text (LT); (6), Unlimited Text (Unlimited Text, UT); (6), Application Entity (Application Entity, AE); (8), Patient Name (Person Name, PN); (9), Unique Identifier (UI); (10), Date (Data, DA); (11), Time (Time) , TM); (12), Date Time (Date Time, DT); (13), Age String (Age String, AS); (14), Integer String (Integer String, IS); (15), Decimal String (Decimal String, DS); (16), Signed Short (SS); (17), Unsigned Short (Unsigned Short, US); (18), Signed Long (Signed) Long, SL); (19), Unsigned Long (UL); (20), Attribute Tag (AT); (21), Floating Single (FL
  • whether a DICOM file characteristic is detected may be determined based on the DICOM prefix 22 .
  • DICOM prefix ie, the 4-byte string "DICM”
  • the length of the file preamble 31 ie, 128 bytes
  • the complete DICOM file can be extracted starting from the start bit of the payload field of the duplicated packet.
  • whether a DICOM file feature is detected may also be determined based on the DICOM prefix 22 and the value representation field 42 together. Specifically, when a DICOM prefix equivalent to the first predetermined character and a data type field equivalent to the second predetermined character are detected from the duplicated data packet, it can be determined that the DICOM file feature is detected.
  • DICOM prefix ie, the 4-byte string "DICM”
  • the length of the file preamble 31 ie, 128 bytes
  • the complete DICOM file can be extracted starting from the start bit of the payload field of the duplicated packet.
  • the embodiments of the present invention can extract DICOM files based on the duplicate data packets of data packets sent by medical imaging equipment, and can obtain DICOM files without relying on PACS, which has a wide range of applications, is easy to implement, and can save costs.
  • the replicated data packet can be synchronized with the data packet sent by the medical imaging device, so the embodiment of the present invention can also acquire the DICOM file in real time.
  • an embodiment of the present invention also provides a device for acquiring a DICOM file.
  • FIG. 3 is a block diagram of an apparatus for acquiring a DICOM file according to an embodiment of the present invention.
  • the device for obtaining the DICOM file can sniff the DICOM file from the packet.
  • the device 300 for obtaining a DICOM file includes:
  • an acquisition module 301 which is adapted to acquire the duplicated data packets of the data packets provided by the data duplication equipment and sent by the medical imaging equipment;
  • An extraction module 302 adapted to extract the DICOM file from the replicated data packet when a predetermined DICOM file characteristic is detected from the replicated data packet.
  • the acquiring module 301 is adapted to acquire the duplicate data packets of the data packets sent by the medical imaging device from the network TAP arranged between the medical imaging device and the data exchange device.
  • the acquiring module 301 is adapted to acquire, from a mirror port of a first port of a data exchange device connected to the medical imaging device, a duplicated data packet of a data packet sent by the medical imaging device, wherein the first port Connect with PACS.
  • the extraction module 302 is adapted when a DICOM prefix equivalent to the first predetermined character is detected from the duplicate data packet, or when a DICOM equivalent to the first predetermined character is detected from the duplicate data packet.
  • the DICOM file is extracted from the copied data packet when the prefix and the data type field equal to the second predetermined character.
  • an embodiment of the present invention also proposes a system for acquiring a DICOM file.
  • FIG. 4 is a first exemplary structural diagram of a system for acquiring a DICOM file according to an embodiment of the present invention.
  • the system 50 includes:
  • the network TAP52 which is connected with the medical imaging device 51, is adapted to generate a duplicate data packet based on the data packet sent by the medical imaging device 51;
  • a data exchange device 54 which is connected to the network TAP52, adapted to send the data packets sent by the medical imaging device 51 to the PACS55;
  • the device 53 for obtaining DICOM files which is connected to the network TAP 52, is adapted to obtain the duplicate data packets generated by the network TAP 52, and extracts the DICOM files from the duplicate data packets when a predetermined DICOM file characteristic is detected from the duplicate data packets.
  • the apparatus 53 for acquiring a DICOM file may specifically be implemented as an apparatus 300 for acquiring a DICOM file as shown in FIG. 3 .
  • the data exchange device 54 may be embodied as a switch or a router, or the like.
  • the medical imaging device 51 can be specifically implemented as an X-ray device, a CT device, a magnetic resonance device, an ultrasound device, and the like.
  • FIG. 5 is a second exemplary structural diagram of a system for acquiring a DICOM file according to an embodiment of the present invention.
  • the system 60 for obtaining DICOM files includes:
  • the data exchange device 62 which is connected to the medical imaging device 61, includes a first port 621 connected to the PACS63 and a mirror port 622 of the first port 621;
  • the device 64 for obtaining the DICOM file which is connected to the mirror port 622, is adapted to obtain, from the mirror port 622, a duplicate data packet of the data packet sent by the medical imaging device 61, which is sent to the PACS 63 via the first port 621, when the duplicate data packet is sent from the mirror port 621.
  • the DICOM file is extracted from the replicated data package when a predetermined DICOM file characteristic is detected in the package.
  • the apparatus 64 for acquiring a DICOM file may specifically be implemented as an apparatus 300 for acquiring a DICOM file as shown in FIG. 3 .
  • the data switching device 62 may be implemented as a switch or a router.
  • the medical imaging device 61 can be specifically implemented as an X-ray device, a CT device, a magnetic resonance device, an ultrasound device, and the like.
  • FIG. 6 is a block diagram of an apparatus for obtaining a DICOM file with a processor-memory architecture according to an embodiment of the present invention.
  • the apparatus 600 includes a processor 601 and a memory 602;
  • An application program executable by the processor 1201 is stored in the memory 602 for causing the processor 601 to execute the method 100 of the DICOM file as shown in FIG. 1 .
  • the memory 602 can be specifically implemented as various storage media such as Electrically Erasable Programmable Read-Only Memory (EEPROM), Flash Memory (Flash memory), Programmable Program Read-Only Memory (PROM).
  • the processor 601 may be implemented to include one or more central processing units or one or more field programmable gate arrays, wherein the field programmable gate arrays integrate one or more central processing unit cores.
  • a central processing unit or central processing unit core may be implemented as a CPU or an MCU.
  • the hardware modules in various embodiments may be implemented mechanically or electronically.
  • a hardware module may include specially designed permanent circuits or logic devices (eg, special purpose processors, such as FPGAs or ASICs) for performing specific operations.
  • Hardware modules may also include programmable logic devices or circuits (eg, including general-purpose processors or other programmable processors) temporarily configured by software for performing particular operations.
  • programmable logic devices or circuits eg, including general-purpose processors or other programmable processors
  • the present invention also provides a machine-readable storage medium storing instructions for causing a machine to perform a method as described herein.
  • a system or device equipped with a storage medium on which software program codes for realizing the functions of any one of the above-described embodiments are stored, and make the computer (or CPU or MPU of the system or device) ) to read and execute the program code stored in the storage medium.
  • a part or all of the actual operation can also be completed by an operating system or the like operating on the computer based on the instructions of the program code.
  • the program code read from the storage medium can also be written into the memory provided in the expansion board inserted into the computer or into the memory provided in the expansion unit connected to the computer, and then the instructions based on the program code make the device installed in the computer.
  • the CPU on the expansion board or the expansion unit or the like performs part and all of the actual operations, so as to realize the functions of any one of the above-mentioned embodiments.
  • Embodiments of storage media for providing program code include floppy disks, hard disks, magneto-optical disks, optical disks (eg, CD-ROM, CD-R, CD-RW, DVD-ROM, DVD-RAM, DVD-RW, DVD+RW), Magnetic tapes, non-volatile memory cards and ROMs.
  • the program code may be downloaded from a server computer or cloud over a communications network.

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Abstract

本发明实施方式公开了一种获取医学数字成像和通信（DICOM）文件的方法、装置和系统。方法包括：获取数据复制设备提供的、医学影像设备发出的数据包的复制数据包；当从所述复制数据包中检测到预定的DICOM文件特征时，从所述复制数据包中提取DICOM文件。本发明实施方式不依赖于影像归档和通信系统（PACS）即可获取DICOM文件，适用范围广，便于实施，还可以节约成本。

Description

一种获取DICOM文件的方法、装置和系统 技术领域
本发明涉及医疗设备技术领域，特别是涉及一种获取医学数字成像和通信(Digital Imaging and Communications in Medicine，DICOM)文件的方法、装置和系统。
背景技术
DICOM是医学图像和相关信息的国际标准。它定义了质量能满足临床需要的可用于数据交换的医学图像格式。DICOM被广泛应用于放射医疗、心血管成像以及放射诊疗诊断设备(比如，X射线设备、CT设备、磁共振设备，超声设备等)，并且在眼科和牙科等医学领域得到越来越深入广泛的应用。DICOM文件不仅包含图像本身的信息，同时还携带了大量的医疗相关信息。DICOM标准的推出与实现，简化了医学影像信息交换的实现，推动了影像归档和通信系统(Picture Archiving and Communication Systems，PACS)的研究与发展。
PACS主要的任务是把日常产生的各种医学影像(包括核磁、CT、超声、各种X光机、各种红外仪、显微仪等设备产生的图像)通过各种接口以数字化的方式海量保存起来，当需要的时候能够很快调用医学影像，同时增加一些辅助诊断管理功能。
目前，用户一般通过PACS获取DICOM文件。然而，部署PACS导致成本问题。而且，用户需要到PACS的固定布置处获取DICOM文件，使用方式并不灵活。另外，用户还需要掌握PACS的足够使用经验才能获取DICOM文件，同样导致了用户使用不便。
发明内容
本发明实施方式提出一种获取DICOM文件的方法、装置和系统。
本发明实施方式的技术方案如下：
一种获取DICOM文件的方法，包括：
获取数据复制设备提供的、医学影像设备发出的数据包的复制数据包；
当从所述复制数据包中检测到预定的DICOM文件特征时，从所述复制数据包中提取DICOM文件。
可见，本发明实施方式可以基于医学影像设备发出的数据包的复制数据包而提取DICOM文件，不依赖于PACS即可获取DICOM文件，适用范围广，便于实施，还可以节约成本。
在一个实施方式中，所述获取数据复制设备提供的、医学影像设备发出的数据包的复制数据包包括：
在布置于医学影像设备与数据交换设备之间的网络测试访问点(Test Access Point，TAP)处，基于医学影像设备发出的数据包生成所述复制数据包；
从所述网络TAP获取所述复制数据包。
因此，通过布置于医学影像设备与数据交换设备之间的网络TAP，可以便利地生成医学影像设备发出的数据包的复制数据包。
在一个实施方式中，所述获取数据复制设备提供的、医学影像设备发出的数据包的复制数据包包括：
经由与医学影像设备连接的数据交换设备中的第一端口，向PACS发送医学影像设备发出的数据包；
经由所述第一端口的镜像端口，获取所述医学影像设备发出的数据包的复制数据包。
因此，通过端口镜像功能的数据交换设备，可以便利地生成医学影像设备发出的数据包的复制数据包。
在一个实施方式中，所述从复制数据包中检测到预定的DICOM文件特征包括下列中的至少一个：
从复制数据包中检测到等同于第一预定字符的DICOM前缀；
从复制数据包中检测到等同于第一预定字符的DICOM前缀以及等同于第二预定字符的数据类型字段。
可见，本发明实施方式通过对DICOM前缀的检测，可以便利地辨识出DICOM文件。而且，本发明实施方式通过对DICOM前缀和数据类型字段的综合检测，可以准确地辨识出DICOM文件。
一种获取DICOM文件的装置，包括：
获取模块，其适配于获取数据复制设备提供的、医学影像设备发出的数据包的复制数据包；
提取模块，其适配于当从所述复制数据包中检测到预定的DICOM文件特征时，从所述复制数据包中提取DICOM文件。
可见，本发明实施方式可以基于医学影像设备发出的数据包的复制数据包而提取DICOM文件，不依赖于PACS即可获取DICOM文件，适用范围广，便于实施，还可以节约成本。
在一个实施方式中，获取模块，其适配于从布置在医学影像设备与数据交换设备之间的网络TAP，获取医学影像设备发出的数据包的复制数据包。
因此，通过布置于医学影像设备与数据交换设备之间的网络TAP，可以便利地生成医学影像设备发出的数据包的复制数据包。
在一个实施方式中，获取模块，其适配于从与医学影像设备连接的数据交换设备的第一端口的镜像端口中，获取医学影像设备发出的数据包的复制数据包，其中所述第一端口与PACS连接。
因此，通过端口镜像功能的数据交换设备，可以便利地生成医学影像设备发出的数据包的复制数据包。
在一个实施方式中，提取模块，其适配于当从复制数据包中检测到等同于第一预定字符的DICOM前缀时，或当从复制数据包中检测到等同于第一预定字符的DICOM前缀以及等同于第二预定字符的数据类型字段时，从所述复制数据包中提取DICOM文件。
可见，本发明实施方式通过对DICOM前缀的检测，可以便利地辨识出DICOM文件。而且，本发明实施方式通过对DICOM前缀和数据类型字段的综合检测，可以准确地辨识出DICOM文件。
一种获取DICOM文件的系统，包括：
网络TAP，其与医学影像设备连接，适配于基于医学影像设备发出的数据包生成复制数据包；
数据交换设备，其与网络测试访问点连接，适配于将医学影像设备发出的数据包发送到PACS；
获取DICOM文件的装置，其与网络TAP连接，适配于获取所述复制数据包，当从所述复制数据包中检测到预定的DICOM文件特征时，从所述复制数据包中提取DICOM文件。
可见，本发明实施方式可以基于医学影像设备发出的数据包的复制数据包而提取DICOM文件，不依赖于PACS即可获取DICOM文件，适用范围广，便于实施，还可以节约成本。而且，通过布置于医学影像设备与数据交换设备之间的网络TAP，可以便利地生成医学影像设备发出的数据包的复制数据包。
一种获取DICOM文件的系统，包括：
数据交换设备，其与医学影像设备连接，包含与PACS连接的第一端口和所述第一端口的镜像端口；
获取DICOM文件的装置，其与所述镜像端口连接，适配于从镜像端口获取经由第一端口被发送到PACS的、医学影像设备发出的数据包的复制数据包，当从所述复制数据包中检测到预定的DICOM文件特征时，从所述复制数据包中提取DICOM文件。
可见，本发明实施方式可以基于医学影像设备发出的数据包的复制数据包而提取DICOM文件，不依赖于PACS即可获取DICOM文件，适用范围广，便于实施，还可以节约成本。而且，通过端口镜像功能的数据交换设备，可以便利地生成医学影像设备发出的数据包的复制数据包。
一种获取DICOM文件的装置，包括处理器、存储器及存储在所述存储器上并可在所述处理器上运行的计算机程序，所述计算机程序被所述处理器执行时实现如上任一项所述的获取DICOM文件的方法。
因此，本发明实施方式还提出了具有处理器-存储器架构的装置，不依赖于PACS即可获取DICOM文件，适用范围广，便于实施，还可以节约成本。
一种计算机可读存储介质，所述计算机可读存储介质上存储计算机程序，所述计算机程序被处理器执行时实现如上任一项所述的获取DICOM文件的方法。
因此，本发明实施方式还提出了包含计算机程序的计算机可读存储介质，不依赖于PACS即可获取DICOM文件，适用范围广，便于实施，还可以节约成本。
附图说明
图1为根据本发明实施方式获取DICOM文件的方法的流程图。
图2为DICOM文件格式的示意图。
图3为根据本发明实施方式获取DICOM文件的装置的模块图。
图4为根据本发明实施方式获取DICOM文件的系统的第一示范性结构图。
图5为根据本发明实施方式获取DICOM文件的系统的第二示范性结构图。
图6为根据本发明实施方式具有处理器-存储器架构的、获取DICOM文件的装置的模块图。
其中，附图标记如下：
100 获取DICOM文件的方法
101～102 步骤
20 DICOM文件
31 DICOM文件头
32 DICOM数据集合
21 文件导言
22 DICOM前缀
23 文件信息元素
24 数据元
41 DICOM标签
42 值表现字段
43 值长字段
44 值字段
300 获取DICOM文件的装置
301 获取模块
302 提取模块
50 获取DICOM文件的系统
51 医学影像设备
52 网络TAP
53 获取DICOM文件的装置
54 数据交换设备
55 PACS
60 获取DICOM文件的系统
61 医学影像设备
62 数据交换设备
621 第一端口
622 镜像端口
63 PACS
64 获取DICOM文件的装置
600 获取DICOM文件的装置
601 处理器
602 存储器
具体实施方式
为了使本发明的技术方案及优点更加清楚明白，以下结合附图及实施方式，对本发明进行进一步详细说明。应当理解，此处所描述的具体实施方式仅仅用以阐述性说明本发明，并不用于限定本发明的保护范围。
为了描述上的简洁和直观，下文通过描述若干代表性的实施方式来对本发明的方案进行阐述。实施方式中大量的细节仅用于帮助理解本发明的方案。但是很明显，本发明的技术方案实现时可以不局限于这些细节。为了避免不必要地模糊了本发明的方案，一些实施方式没有进行细致地描述，而是仅给出了框架。下文中，“包括”是指“包括但不限于”，“根据……”是指“至少根据……，但不限于仅根据……”。由于汉语的语言习惯，下文中没有特别指出一个成分的数量时，意味着该成分可以是一个也可以是多个，或可理解为至少一个。
申请人发现：在现有技术中，因依赖于PACS获取DICOM文件而存在诸多可改进的地方。本发明实施方式提出不依赖于PACS，独立获取DICOM文件的技术方案。
图1为根据本发明实施方式获取DICOM文件的方法的流程图。该方法适用于由不被包含于PACS中的、获取DICOM文件的装置所执行。
如图1所示，该方法包括：
步骤101：获取数据复制设备提供的、医学影像设备发出的数据包的复制数据包。
在这里，医学影像设备是指利用各种不同媒介作为信息载体，将人体内部的结构重现为影像的各种仪器，其影像信息与人体实际结构有着空间和时间分布上的对应关系。比如，医学影像设备可以包括X射线设备、CT设备、磁共振设备，超声设备等等。医学影像设备可以产生DICOM文件，并基于预定的传输协议(比如，TCP/IP协议或CAN协议，等等)将DICOM文件封装为数据包，经由与医学影像设备连接的数据交换设备(比如，交换机或路由器，等等)将数据包发送出去，比如发送到PACS系统。
以上示范性描述了医学影像设备的典型实施方式，本领域技术人员可以意识到，这种描述仅是示范性的，并不用于限定本发明实施方式的保护范围。
而且，数据复制设备用于复制医学影像设备生成的数据包。在步骤101中，获取DICOM文件的装置可以从数据复制设备获取医学影像设备发出的数据包的复制数据包。
在一个实施方式中，在布置于医学影像设备与数据交换设备之间的网络TAP处，基于医学影像设备发出的数据包生成复制数据包；从网络TAP获取复制数据包。
具体地，数据复制设备可以实施为布置在医学影像设备与数据交换设备之间的TAP。该TAP的输入端口与医学影像设备连接，以接收医学影像设备发出的数据包。网络TAP基于医学影像设备发出的数据包生成复制数据包。而且，网络TAP具有两个输出端口，其中一个输出端口与数据交换设备连接，以向数据交换设备发送医学影像设备发出的数据包，从而由数据交换设备将数据包发送出去，比如发送到PACS系统；另一个输出端口与获取DICOM文件的装置连接，从而向获取DICOM文件的装置发送复制数据包。
可见，通过布置于医学影像设备与数据交换设备之间的网络TAP，可以便利地生成医学影像设备发出的数据包的复制数据包。
在一个实施方式中，经由与医学影像设备连接的数据交换设备中的第一端口，向PACS发送医学影像设备发出的数据包；经由第一端口的镜像端口，获取医学影像设备发出的数据包的复制数据包。
数据复制设备可以实施为布置与医学影像设备连接的、具有端口映像(port Mirroring)功能的数据交换设备。该数据交换设备的输入端口与医学影像设备连接，以接收医学影像设备发出的数据包。而且，基于数据交换设备的端口镜像功能，可以将数据交换设备上的、一个或多个源端口的数据流量转发到指定端口来实现对网络的监听，其中该指定端口称之为镜像端口。数据交换设备具体可以实施为交换机或路由器，等等。
具体地，数据交换设备上具有输入端口，以接收医学影像设备发出的数据包。而且，数据交换设备具有两个端口(均为输出端口)，其中第一端口与PACS连接，以向PACS系统发送医学影像设备发出的数据包；第二端口为第一端口的镜像端口。该镜像端口与获取DICOM文件的装置连接，从而向获取DICOM文件的装置发送经由第一端口输出的数据包的复制数据包。
步骤102：当从复制数据包中检测到预定的DICOM文件特征时，从复制数据包中提取DICOM文件。
在一个实施方式中，从复制数据包中检测到预定的DICOM文件特征包括下列中的至少一个：
(1)、从复制数据包中检测到等同于第一预定字符的DICOM前缀。
可见，本发明实施方式通过对DICOM前缀的检测，可以便利地辨识出DICOM文件。
(2)、从复制数据包中检测到等同于第一预定字符的DICOM前缀以及等同于第二预定字符的数据类型字段。
可见，本发明实施方式通过对DICOM前缀和数据类型字段的综合检测，可以准确地辨识出DICOM文件
下面结合DICOM文件格式对本发明实施方式进行说明。DICOM文件是指按照DICOM标准而存储的医学文件。DICOM标准的第五部分介绍了它的数据结构，定义了数据集(Data Set)来保存信息对象定义(IOD)，而且数据集由多个数据元(Data Element)组成。
图2为DICOM文件格式的示意图。如图2所示，DICOM文件20包括DICOM文件头31和DICOM数据集合32。
DICOM文件头31包含标识数据集合的相关信息，每个DICOM文件都包括一个文件头。DICOM文件头31包含了标识数据集合的相关信息。具体地，DICOM文件头31包括：(1)、文件导言21，由128个字节组成；(2)、DICOM前缀22，可根据长度为4个字节的字符串是否等于“DICM”来判断该文件是不是DICOM文件；(3)、文件信息元素23。
DICOM数据集合32是DICOM文件31的主要组成部分，它包含多个数据元24。每个数据元24包括： (1)、DICOM标签(TAG)41：存储该项信息的标识；(2)、值表现(value representation，VR)字段42：存储描述该项信息的数据类型；(3)、值长(value length)字段43：存储描述该项信息的数据长度；(4)、值(value)字段44：存储描述该项信息的数据值。
DICOM标准在PS3.5中定义了27个基本数据类型，即定义了27个VR。
具体地，值表现字段42可以包括：(1)、代码字符串(Code String，CS)；(2)、短字符串(Short String，SH)；(3)、长字符串(Long String，LO)；(4)、短文本(Short Text，ST)；(5)、长文本(Long Text，LT)；(6)、无限制文本(Unlimited Text，UT)；(6)、应用实体(Application Entity，AE)；(8)、病人姓名(Person Name，PN)；(9)、唯一标识符(Unique Identifier，UI)；(10)、日期(Data，DA)；(11)、时间(Time，TM)；(12)、日期时间(Date Time，DT)；(13)、年龄字符串(Age String，AS)；(14)、整型字符串(Integer String，IS)；(15)、小数字符串(Decimal String，DS)；(16)、有符号短型(Signed Short，SS)；(17)、无符号短型(Unsigned Short，US)；(18)、有符号长型(Signed Long，SL)；(19)、无符号长型(Unsigned Long，UL)；(20)、属性标签(Attribute Tag，AT)；(21)、单精度浮点(Floating Single，FL)；(22)、双精度二进制浮点数字(Floating Point Double，FD)；(23)、其他字节字符串(Other Byte String，OB)；(24)、其他单词字符串(Other Word String，OW)；(25)、其他浮点字符串(Other Float String，OF)；(26)、条目序列(Sequence Items，SQ)；(27)、未知(Unknown，UN)。
在一个实施方式中，可以基于DICOM前缀22确定是否检测到DICOM文件特征。
具体地，当从复制数据包中检测到等同于预定字符的DICOM前缀时，可以认定检测到DICOM文件特征。
比如，当从复制数据包的负载字段的起始位开始，经过文件导言31的长度(即128个字节)后，检测到DICOM前缀(即4个字节的字符串“DICM”)时，可以认定检测到DICOM文件特征。此时，可以从复制数据包的负载字段的起始位开始提取完整的DICOM文件。在这个实施方式中，仅通过是否检测到DICOM前缀，即判定是否检测到DICOM文件特征，具有检测快速的优点。
在一个实施方式中，还可以基于DICOM前缀22和值表现字段42共同确定是否检测到DICOM文件特征。具体地，当从复制数据包中检测到等同于第一预定字符的DICOM前缀以及等同于第二预定字符的数据类型字段时，可以认定检测到DICOM文件特征。
比如，当从复制数据包的负载字段的起始位开始，经过文件导言31的长度(即128个字节)后，检测到DICOM前缀(即4个字节的字符串“DICM”)，而且从VR字段42中检测到任意的上述27个基本数据类型时，可以认定检测到DICOM文件特征。此时，可以从复制数据包的负载字段的起始位开始提取完整的DICOM文件。在这个实施方式中，通过对DICOM前缀和数据类型字段的综合检测，可以准确确定是否检测到DICOM文件特征。
以上示范性描述了检测到DICOM文件特征的典型实施方式，本领域技术人员可以意识到，这种描述 仅是示范性的，并不用于限定本发明实施方式的保护范围。
综上所述，本发明实施方式可以基于医学影像设备发出的数据包的复制数据包而提取DICOM文件，不依赖于PACS即可获取DICOM文件，适用范围广，便于实施，还可以节约成本。而且，复制数据包可以与医学影像设备发出的数据包同步，因此本发明实施方式还可以实时获取DICOM文件。
基于上述描述，本发明实施方式还提出了获取DICOM文件的装置。
图3为根据本发明实施方式获取DICOM文件的装置的模块图。该获取DICOM文件的装置可以从数据包中嗅探出DICOM文件。
如图3所示，获取DICOM文件的装置300包括：
获取模块301，其适配于获取数据复制设备提供的、医学影像设备发出的数据包的复制数据包；
提取模块302，其适配于当从复制数据包中检测到预定的DICOM文件特征时，从复制数据包中提取DICOM文件。
在一个实施方式中，获取模块301，其适配于从布置在医学影像设备与数据交换设备之间的网络TAP，获取医学影像设备发出的数据包的复制数据包。
在一个实施方式中，获取模块301，其适配于从与医学影像设备连接的数据交换设备的第一端口的镜像端口中，获取医学影像设备发出的数据包的复制数据包，其中第一端口与PACS连接。
在一个实施方式中，提取模块302，其适配于当从复制数据包中检测到等同于第一预定字符的DICOM前缀时，或当从复制数据包中检测到等同于第一预定字符的DICOM前缀以及等同于第二预定字符的数据类型字段时，从复制数据包中提取DICOM文件。
基于上述描述，本发明实施方式还提出了获取DICOM文件的系统。
图4为根据本发明实施方式获取DICOM文件的系统的第一示范性结构图。
如图4所示，该系统50包括：
网络TAP52，其与医学影像设备51连接，适配于基于医学影像设备51发出的数据包生成复制数据包；
数据交换设备54，其与网络TAP52连接，适配于将医学影像设备51发出的数据包发送到PACS55；
获取DICOM文件的装置53，其与网络TAP52连接，适配于获取网络TAP52生成的复制数据包，当从复制数据包中检测到预定的DICOM文件特征时，从复制数据包中提取DICOM文件。
其中，获取DICOM文件的装置53具体可以实施为如图3所示的获取DICOM文件的装置300。而且，数据交换设备54具体可以实施为交换机或路由器，等等。医学影像设备51具体可以实施为X射线设备、CT设备、磁共振设备，超声设备，等等。
图5为根据本发明实施方式获取DICOM文件的系统的第二示范性结构图。
如图5所示，获取DICOM文件的系统60包括：
数据交换设备62，其与医学影像设备61连接，包含与PACS63连接的第一端口621和第一端口621 的镜像端口622；
获取DICOM文件的装置64，其与镜像端口622连接，适配于从镜像端口622获取经由第一端口621被发送到PACS63的、医学影像设备61发出的数据包的复制数据包，当从复制数据包中检测到预定的DICOM文件特征时，从复制数据包中提取DICOM文件。
其中，获取DICOM文件的装置64具体可以实施为如图3所示的获取DICOM文件的装置300。而且，数据交换设备62可以实施为交换机或路由器。医学影像设备61具体可以实施为X射线设备、CT设备、磁共振设备，超声设备，等等。
图6为根据本发明实施方式具有处理器-存储器架构的、获取DICOM文件的装置的模块图。
如图6所示，装置600包括处理器601和存储器602；
存储器602中存储有可被处理器1201执行的应用程序，用于使得处理器601执行如图1所示的DICOM文件的方法100。
其中，存储器602具体可以实施为电可擦可编程只读存储器(EEPROM)、快闪存储器(Flash memory)、可编程程序只读存储器(PROM)等多种存储介质。处理器601可以实施为包括一或多个中央处理器或一或多个现场可编程门阵列，其中现场可编程门阵列集成一或多个中央处理器核。具体地，中央处理器或中央处理器核可以实施为CPU或MCU。
需要说明的是，上述各流程和各结构图中不是所有的步骤和模块都是必须的，可以根据实际的需要忽略某些步骤或模块。各步骤的执行顺序不是固定的，可以根据需要进行调整。各模块的划分仅仅是为了便于描述采用的功能上的划分，实际实现时，一个模块可以分由多个模块实现，多个模块的功能也可以由同一个模块实现，这些模块可以位于同一个设备中，也可以位于不同的设备中。
各实施方式中的硬件模块可以以机械方式或电子方式实现。例如，一个硬件模块可以包括专门设计的永久性电路或逻辑器件(如专用处理器，如FPGA或ASIC)用于完成特定的操作。硬件模块也可以包括由软件临时配置的可编程逻辑器件或电路(如包括通用处理器或其它可编程处理器)用于执行特定操作。至于具体采用机械方式，或是采用专用的永久性电路，或是采用临时配置的电路(如由软件进行配置)来实现硬件模块，可以根据成本和时间上的考虑来决定。
本发明还提供了一种机器可读的存储介质，存储用于使一机器执行如本文所述方法的指令。具体地，可以提供配有存储介质的系统或者装置，在该存储介质上存储着实现上述实施例中任一实施方式的功能的软件程序代码，且使该系统或者装置的计算机(或CPU或MPU)读出并执行存储在存储介质中的程序代码。此外，还可以通过基于程序代码的指令使计算机上操作的操作系统等来完成部分或者全部的实际操作。还可以将从存储介质读出的程序代码写到插入计算机内的扩展板中所设置的存储器中或者写到与计算机相连接的扩展单元中设置的存储器中，随后基于程序代码的指令使安装在扩展板或者扩展单元上的CPU等来执行部分和全部实际操作，从而实现上述实施方式中任一实施方式的功能。用于提供程序代码的存储 介质实施方式包括软盘、硬盘、磁光盘、光盘(如CD-ROM、CD-R、CD-RW、DVD-ROM、DVD-RAM、DVD-RW、DVD+RW)、磁带、非易失性存储卡和ROM。可选择地，可以由通信网络从服务器计算机或云上下载程序代码。
以上所述，仅为本发明的较佳实施方式而已，并非用于限定本发明的保护范围。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (12)

  1. 一种获取DICOM文件的方法(100)，其特征在于，包括：
    获取数据复制设备提供的、医学影像设备发出的数据包的复制数据包(101)；
    当从所述复制数据包中检测到预定的DICOM文件特征时，从所述复制数据包中提取DICOM文件(102)。
  2. 根据权利要求1所述的获取DICOM文件的方法(100)，其特征在于，
    所述获取数据复制设备提供的、医学影像设备发出的数据包的复制数据包(101)包括：
    在布置于医学影像设备(51)与数据交换设备(54)之间的网络测试访问点(52)处，基于医学影像设备(51)发出的数据包生成所述复制数据包；
    从所述网络测试访问点(52)获取所述复制数据包。
  3. 根据权利要求1所述的获取DICOM文件的方法(100)，其特征在于，
    所述获取数据复制设备提供的、医学影像设备发出的数据包的复制数据包(101)包括：
    经由与医学影像设备(61)连接的数据交换设备(62)中的第一端口(621)，向影像归档和通信系统(63)发送医学影像设备(61)发出的数据包；
    经由所述第一端口(621)的镜像端口(622)，获取所述医学影像设备(61)发出的数据包的复制数据包。
  4. 根据权利要求1所述的获取DICOM文件的方法(100)，其特征在于，
    所述从复制数据包中检测到预定的DICOM文件特征包括下列中的至少一个：
    从所述复制数据包中检测到等同于第一预定字符的DICOM前缀；
    从所述复制数据包中检测到等同于第一预定字符的DICOM前缀以及等同于第二预定字符的数据类型字段。
  5. 一种获取DICOM文件的装置(300)，其特征在于，包括：
    获取模块(301)，其适配于获取数据复制设备提供的、医学影像设备发出的数据包的复制数据包；
    提取模块(302)，其适配于当从所述复制数据包中检测到预定的DICOM文件特征时，从所述复制数据包中提取DICOM文件。
  6. 根据权利要求5所述的获取DICOM文件的装置(300)，其特征在于，
    获取模块(301)，其适配于从布置在医学影像设备(51)与数据交换设备(54)之间的网络测试访问点(52)，获取医学影像设备(51)发出的数据包的复制数据包。
  7. 根据权利要求5所述的获取DICOM文件的装置(300)，其特征在于，
    获取模块(301)，其适配于从与医学影像设备(61)连接的数据交换设备(62)的第一端口(621)的镜像端口(622)中，获取医学影像设备(61)发出的数据包的复制数据包，其中所述第一端口(621)与影像归档和通信系统(63)连接。
  8. 根据权利要求5所述的获取DICOM文件的装置(300)，其特征在于，
    提取模块(302)，其适配于当从所述复制数据包中检测到等同于第一预定字符的DICOM前缀时，或当从所述复制数据包中检测到等同于第一预定字符的DICOM前缀以及等同于第二预定字符的数据类型字段时，从所述复制数据包中提取DICOM文件。
  9. 一种获取DICOM文件的系统(50)，其特征在于，包括：
    网络测试访问点(52)，其与医学影像设备(51)连接，适配于基于医学影像设备(51)发出的数据包生成复制数据包；
    数据交换设备(54)，其与网络测试访问点(52)连接，适配于将医学影像设备(51)发出的数据包发送到影像归档和通信系统(55)；
    获取DICOM文件的装置(53)，其与网络测试访问点(52)连接，适配于获取所述复制数据包，当从所述复制数据包中检测到预定的DICOM文件特征时，从所述复制数据包中提取DICOM文件。
  10. 一种获取DICOM文件的系统(60)，其特征在于，包括：
    数据交换设备(62)，其与医学影像设备(61)连接，包含与影像归档和通信系统(63)连接的第一端口(621)和所述第一端口(621)的镜像端口(622)；
    获取DICOM文件的装置(64)，其与所述镜像端口(622)连接，适配于从镜像端口(622)获取经由第一端口(621)被发送到影像归档和通信系统(63)的、医学影像设备(61)发出的数据包的复制数据包，当从所述复制数据包中检测到预定的DICOM文件特征时，从所述复制数据包中提取DICOM文件。
  11. 一种获取DICOM文件的装置(600)，其特征在于，包括处理器(601)、存储器(602)及存储在所述存储器(602)上并可在所述处理器(601)上运行的计算机程序，所述计算机程序被所述处理器(601)执行时实现如权利要求1至4中任一项所述的获取DICOM文件的方法(100)。
  12. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质上存储计算机程序，所述计算机程序被处理器执行时实现如权利要求1至4中任一项所述的获取DICOM文件的方法(100)。
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