JP5846788B2 - Medical image processing device - Google Patents

Description

  Embodiments described herein relate generally to a medical image processing apparatus.

  When referring to past medical image data at a medical site, since the recording medium storing the medical image data is the media at that time, it is old and may be rarely used in recent years. Also, since the old recording medium has a small capacity and the reading device is extremely slow, it takes too much time and time to refer to the stored medical image data.

  In addition, past medical image data used various old data formats such as ACR-NEMA format, IS & C format, extended IS & C standard format, and common standard format. The medical image data stored in these old data formats is converted into a data format such as DICOM format that has been widely used in recent years, and converted into medical image data that can be used for currently used inspection apparatuses. Is underway. Medical image data converted to DICOM format is currently large-capacity and highly versatile, such as DVD-RAM, DVD-R / RW, DVD-R / RW DL, Blu-ray (BD-R / RE), etc. Saved to media. Since each of these media has a capacity capable of storing a plurality of old format recording media, the number of old recording media can be reduced and a storage space for the recording media can be secured.

JP 2005-284564 A

  However, when medical image data is copied from an old recording medium to a new recording medium, there are the following problems. First, when each piece of medical image data stored in an old recording medium is simply copied to a new recording medium as long as the capacity permits, it is composed of a plurality of medical image data formed on the old storage medium. Data unit such as examination unit and patient unit is broken. In particular, when the data format in the old recording medium is old and converted to a new data format and copied to a new recording medium, the data binding is further broken because the data format is different.

  Also, since old recording media have a small capacity, medical image data is often compressed and stored. The data compression format at this time is not uniformly the same format, and is not always a general compression format in many cases. Therefore, it is necessary to decompress the compressed data into data in a general format. However, since the data size after expansion cannot be grasped, there is a possibility that the data size is too large to fit on the conversion destination recording medium.

  Further, conventionally, only one conversion source recording medium can be converted and copied regardless of the maximum recording capacity of the conversion destination recording medium, and a plurality of conversion source recording media are integrated. Thus, the storage capacity of the conversion destination recording medium cannot be fully utilized.

  The embodiment of the present invention has been made in consideration of such points, and an object thereof is to provide a medical image processing apparatus capable of copying medical image data with different recording media.

The medical image processing apparatus according to the embodiment stores an image information acquisition unit that acquires image information including image data and incidental information stored in a first recording medium, and image information acquired by the image information acquisition unit. An image information storage unit, a capacity acquisition unit for acquiring the capacity of the second recording medium, and image data obtained by compressing image data corresponding to the incidental information included in the image information acquired by the image information acquisition unit. If the information indicating that there is, a data size calculation unit that predicts and calculates the data size when the compressed image data is decompressed , and each of the plurality of first recording media in the image information acquisition unit An index information editing unit that creates at least one index information based on the incidental information included in the image information acquired from the index information, and the index information created by the index information editing unit. When the from the image information stored in the image information storage unit, the second recording and profile data creation unit that creates profile data for storing the medium, the second recording medium acquired by the capacity acquisition unit And a determination unit that compares and determines the size of the profile data created by the profile data creation unit, and the determination unit determines that the size of the profile data is less than or equal to the capacity of the second recording medium And a data writing unit that decompresses the compressed image data and writes the profile data created by the profile data creation unit to the second recording medium.

1 is a block diagram showing a schematic configuration of a medical image processing apparatus according to an embodiment of the present invention. The block diagram which shows the detail of a control part. 6 is a flowchart showing an operation of writing image information of the recording medium A into the recording medium M. The figure which shows the example of a classification | category of index information. The figure which shows the example in the case of deleting for every patient ID among index information.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

  FIG. 1 is a block diagram showing a schematic configuration of a medical image processing apparatus 1 according to an embodiment of the present invention. The medical image processing apparatus 1 is provided as a part of, for example, HIS (Hospital Information System) or RIS (Radiology Information System), and is external to an image diagnostic apparatus or a data server (not shown). The apparatus is connected to each other via a local area network (LAN) in the hospital so that they can communicate with each other.

  The reading / writing device 3 is connected to the medical image processing device 1. The reading / writing device 3 reads or writes data from a removable recording medium such as MO, CD-ROM, DVD-RW, etc., under the control of the control unit 10, and exchanges data with the medical image processing device 1. I do.

  The medical image processing apparatus 1 is configured based on a personal computer or a workstation, and includes a control unit 10, a display unit 12, an operation unit 13, a communication unit 15, a storage unit 16, an information storage medium 17, an image information storage unit 21, an index. An information storage unit 22 and a conversion destination data storage unit 23 are included, and are configured to be communicably connected to each other via a bus.

  The display unit 12 is a monitor or the like, and displays image data and the like based on the control of the control unit 10. The operation unit 13 is an input device such as a touch panel or operation keys. The communication unit 15 is connected to the in-hospital LAN and communicates with an external device.

  The image information storage unit 21 stores image information acquired from a recording medium in the reading / writing device 3 (such as image data and accompanying information of corresponding text). Details will be described later.

  The index information storage unit 22 stores the index information created by the index information editing unit 104 described later. Details will be described later.

  The conversion destination data storage unit 23 stores profile data to be written in the conversion destination storage medium. Details will be described later.

  The storage unit 16 is a work area such as the control unit 10 or the communication unit 15 and can be realized by a RAM (Random Access Memory) or the like.

  The information storage medium 17 (a computer readable medium) stores programs, data, and the like, and can be realized by a hard disk, a memory (Flash Memory, ROM: Read Only Memory), or the like. The information storage medium 17 stores a program for causing a computer to function as each unit of the present embodiment (a program for causing a computer to execute processing of each unit), a plurality of applications, and the like.

  The control unit 10 is an arithmetic device that performs overall control of the medical image processing apparatus 1 and performs various other arithmetic processing and control processing. The function of the control unit 10 can be realized by hardware such as various processors (CPU, DSP, etc.), ASIC (gate array, etc.), and programs. The control unit 10 performs various processes of the present embodiment based on a program (data) stored in the information storage medium 17.

  FIG. 2 is a block diagram showing details of the control unit 10. The control unit 10 includes a capacity acquisition unit 101, an image information acquisition unit 102, a data size calculation unit 103, an index information editing unit 104, a profile data creation unit 107, a comparison determination unit 105, a data writing unit 108, and an image conversion unit 106. Including.

  The capacity acquisition unit 101 acquires the capacity of a removable recording medium inserted in the reading / writing device 3.

  The image information acquisition unit 102 acquires image information from a removable recording medium in the reading / writing device 3 and stores it in the image information storage unit 21.

  The data size calculation unit 103 predicts and calculates the decompressed data size based on the row size, column size, and size per pixel of the compressed image data included in the supplementary information of the medical image data. The data size calculation unit 103 calculates the data size of profile data in the conversion destination data storage unit 23 in which image information is written each time. Details will be described later.

  The index information editing unit 104 creates and edits index information classified into, for example, the ID of the conversion source recording medium, the patient ID, and the examination ID from the incidental information included in the image information acquired by the image information acquisition unit 102. The index information editing unit 104 creates a DICOM DIR file from the created index information. Details will be described later.

  The profile data creation unit 107 creates profile data by associating image information with the index information created by the index information editing unit 104 and stores the profile data in the conversion destination data storage unit 23.

  The data writing unit 108 writes the profile data to be stored in the conversion destination recording medium, created by the profile data creation unit 107 and stored in the conversion destination data storage unit 23, to the conversion destination recording medium.

  The comparison determination unit 105 compares the capacity of the conversion destination recording medium acquired by the capacity acquisition unit 101 with the data size of the profile data calculated by the data size calculation unit 103.

  The image conversion unit 106 converts, for example, image data in an old data format acquired by the image information acquisition unit 102 into data in DICOM format. If there is compressed image data, the compressed image data is expanded.

  Next, an operation of writing the image information of the conversion source recording medium A in the conversion destination recording medium M in the medical image processing apparatus 1 having the above configuration will be described with reference to the flowchart of FIG.

  When the conversion destination recording medium M that can be taken out by the user is inserted into the reading / writing device 3, the capacity acquisition unit 101 in the control unit 10 acquires the data capacity of the conversion destination recording medium M (step S101).

  Next, when the conversion source recording medium A that can be taken out by the user is inserted into the reading / writing device 3, the image information acquisition unit 102 acquires all the image information recorded on the conversion source recording medium A, and stores the image information. The data is stored in the unit 21 (step S103). The image information includes image data as image data and incidental information as text data including information about whether or not the recording medium ID, patient ID, examination ID, and image data are compressed. .

  When the image data in the image information acquired in step S101 is compressed (“Yes” in step S105), the auxiliary information of the image information includes the row size, column size, and size per pixel of the compressed image data. The data size after decompression can be predicted and calculated from these data. The data size calculation unit 103 predicts and calculates the size of the image data after data expansion based on the incidental information (step S107).

  Next, the index information editing unit 104 creates at least one sortable index information based on the supplementary information included in the image information in the recording medium A acquired in step S103 (step S109), and the conversion destination recording medium M As index information for storing in the index information storage unit 22.

  FIG. 4 shows an example of classification of index information to be created. In the example of FIG. 4, the index information is created by classification of the conversion source recording medium ID, patient ID, and examination ID. Note that the index information may include not only a classification applied in common with other recording media but also a classification applied only to the recording medium A.

  The index information is classified into a hierarchical structure. The index information of the patient a, patient b, and patient c in the patient ID is below the recording medium A, and the examination 1 of the examination ID is further below the patient a. , Index information of inspection 2 is included. Therefore, the image information can be classified based on each index information.

  Next, the profile data creation unit 107 associates the image information acquired by the image information acquisition unit 102 in step S103 with the index information generated by the index information editing unit 104 in step S109, and finally converts to the conversion destination recording medium M. Profile data to be stored in is stored in the conversion destination data storage unit 23 (step S111).

  In step S111, the profile data to be stored in the conversion destination data storage unit 23 is data to be written to the conversion destination recording medium M. Therefore, the data size must be equal to or smaller than the conversion destination recording medium M. Therefore, the data size calculation unit 103 calculates the size of the entire profile data every time the profile data creation unit 107 stores the image information in correspondence with the conversion destination data storage unit 23 (step S112). Then, the comparison / determination unit 105 compares the size of the profile data in the conversion destination data storage unit 23 with the capacity of the conversion destination recording medium M acquired by the capacity acquisition unit 101 in step S101 (step S113).

  When the profile data size in the conversion destination data storage unit 23 does not exceed the capacity of the conversion destination recording medium M (“No” in step S113), all the image information of the conversion source recording medium A is stored in the conversion destination data storage unit 23. If not stored (“No” in step S114), the process returns to step S111, and the profile data creation unit 107 appends the next image information to the profile data created corresponding to the index information, and stores the conversion destination data. Stored in the unit 23. When all the image information of the conversion source recording medium A is stored in the conversion destination data storage unit 23 (“Yes” in step S114), it means that the conversion destination recording medium M still has a capacity that can be stored. Return to operation. The image information acquisition unit 102 acquires image information from the next conversion source recording medium (for example, the recording medium B), and appends it to the created profile data.

  When the profile data size in the conversion destination data storage unit 23 exceeds the capacity of the conversion destination recording medium M (“Yes” in step S113), the index information editing unit 104 creates in the index information storage unit 22 in step S109. Of the stored index information, predetermined index information in the profile data and related image information are deleted (step S115).

  The deletion of the image information related to the index information in step S115 preferably holds the unit of patients as much as possible so that the examination contents in a predetermined patient do not vary. FIG. 5 illustrates details of the deletion of the index information and the image information included therein in step S115. FIG. 5 is a diagram illustrating an example of deleting for each patient ID. While the image information corresponding to the index information of the patient c in the conversion source recording medium B is being written to the conversion destination data storage unit 23, the data size in the conversion destination data storage unit 23 exceeds the capacity of the conversion destination recording medium M. In this case, the index information editing unit 104 deletes all image information corresponding to the index information of the patient c in the recording medium B, and also deletes all image information corresponding to the index information of the patient c in the recording medium A.

  This prevents data on examination contents in the same patient from being stored separately on a plurality of media.

  In step S115, the index information editing unit 104 may hold the unit of the conversion source storage medium by deleting, for example, for each ID of the conversion source storage medium, or delete it for each inspection ID. By doing so, it is possible to hold the unit of the inspection unit.

  Returning to the flowchart of FIG. 3, the index information editing unit 104 creates a DICOM DIR file from the index information of the profile data stored in the conversion destination data storage unit 23, and the data writing unit 108 converts the conversion destination data. The data is stored in the storage unit 23 (step S117). This DICOM DIR file is an index file for saving on a recording medium. That is, the DICOM DIR in this case is a file created as index information and indexed by patient IDs and examination IDs.

  When saving to a recording medium in DICOM format, if there is no DICOM DIR file that is an index file, the internal data is just a list of DICOM format data and the hierarchical structure cannot be determined, so it can be used as a DICOM compatible medium. Cannot be read by DICOM compatible devices. Therefore, create a DICOM DIR file.

  Next, the image conversion unit 106 converts the image data in the profile data stored in the conversion destination data storage unit 23 into image data in DICOM format (step S119). In the case of compressed image data, the image data is decompressed and converted into DICOM format image data.

  Next, the data writing unit 108 writes the DICOM DIR file created in step S117 and the image information of the profile data converted in step S119 into the conversion destination recording medium M (step S121).

  According to the embodiment described above, the data capacity of the conversion destination recording medium is acquired and compared each time with the size of the profile data storing a plurality of pieces of image information corresponding to the index information of the patient ID and examination ID. When the profile data size exceeds the data capacity of the conversion destination recording medium, the predetermined index information of the profile data and the related image information are deleted and written to the conversion destination recording medium.

  As a result, it is possible to store the image information data stored in the old format conversion source recording medium in the conversion destination recording medium of the currently widely used format without breaking the data group. Further, by integrating the data of a plurality of conversion source recording media into one conversion destination recording medium as long as the data capacity permits, the capacity of the conversion destination recording medium can be utilized to the maximum extent. In addition, when the image information is compressed data, by predicting and calculating the data size after decompression, it is possible to prevent the compressed data from being stored on the conversion destination recording medium even when decompressed.

  As mentioned above, although embodiment of this invention was explained in full detail with reference to drawings, the specific structure is not restricted to this embodiment, The design change etc. of the range which does not deviate from the summary of this invention are included.

  DESCRIPTION OF SYMBOLS 1 ... Medical image processing apparatus, 10 ... Control part, 12 ... Display part, 13 ... Operation part, 15 ... Communication part, 16 ... Storage part, 17 ... Information storage medium, 21 ... Image information storage part, 22 ... Index information storage Reference numeral 23, conversion destination data storage section, 3 ... reading / writing device.

Claims (5)

An image information acquisition unit for acquiring image information including image data and accompanying information stored in the first recording medium;
An image information storage unit for storing image information acquired by the image information acquisition unit;
A capacity acquisition unit for acquiring the capacity of the second recording medium;
If the supplementary information included in the image information acquired by the image information acquisition unit includes information indicating that the corresponding image data is compressed image data, the compressed image data is decompressed. A data size calculator that predicts and calculates the data size of
An index information editing unit that creates at least one index information based on incidental information included in image information acquired from each of the plurality of first recording media by the image information acquisition unit;
A profile data creating unit for creating profile data to be stored in the second recording medium from the index information created by the index information editing unit and the image information stored in the image information storage unit;
A determination unit that compares and determines the capacity of the second recording medium acquired by the capacity acquisition unit and the size of the profile data generated by the profile data generation unit;
If the determination unit determines that the size of the profile data is less than or equal to the capacity of the second recording medium, the profile data generated by the profile data generation unit while decompressing the compressed image data is added to the profile data. A data writing unit for writing to two recording media;
A medical image processing apparatus comprising: Before SL determination unit, when the size of the profile data is determined to be greater than the capacity of the second recording medium, the index information editing unit, a predetermined index information in the profile data generated by the profile data creation unit And associated image information,
The medical image processing apparatus according to claim 1. An image conversion unit that converts the corresponding image data in the profile data created by the profile data creation unit;
The medical image processing apparatus according to claim 1, further comprising: The index information editing unit is bundled at least for each of the first recording medium ID, patient ID, and examination ID classification, and creates index information narrowed down in order.
The medical image processing apparatus according to claim 1. The index information editing unit
  When the determination unit determines that the size of the profile data is larger than the capacity of the second recording medium, the index information and the related image information in the profile data created by the profile data creation unit are Delete the unit of the classification,
  The medical image processing apparatus according to claim 4.