JPH07146811A - Medical image data filing device - Google Patents

Abstract

PURPOSE:To perform the direct-read-after-write of information representing the security state of preservation duty information on image data recorded in a storage medium, etc., by providing an unwritten area on which the direct- read-after-write can be performed at every medical image data later at the storage medium. CONSTITUTION:The image data is recorded on a DRAW type optical disk in which the file attribute information part and the real data part of the image data are set as a pair. When the image data is recorded on the DRAW type optical disk, the file attribute information part secures an area in which (n+1)-(n+3) sectors that is the unwritten areas 51 is added on (n) sectors that is the area on which actual attribute information is recorded, and records the attribute information on the DRAW type optical disk. Since write on the DRAW type optical disk is performed in sector unit, the area is secured in the number of sectors by which real data can be stored, not by real data length. The (n+1)-(n+3) sectors that is the unwritten area 51 is secured as the area on which the direct-read-after-write can be performed later, and for example, it is used for the recording of the security state 52 of the image data.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention uses a non-rewritable storage medium such as a write-once optical disc (WORM; Write Once Read Many) for digitizing medical image data (hereinafter, also simply referred to as image data). Medical image data filing device for filing to a capacity storage device, in particular,
After image diagnosis of image data recorded in the storage medium,
The present invention relates to a medical image data filing apparatus capable of later writing information indicating a security status such as information about the obligation to save the image data.

[0002]

2. Description of the Related Art In a conventional medical image data filing apparatus, a large-capacity external storage device such as a storage device having a non-rewritable large-capacity storage medium or a device in which the large-capacity storage medium is assembled is connected, and its storage area is In some cases, the post-recordable area is not provided, and the image data and its supplementary information are sequentially recorded in the storage medium.

[0003]

In the above-mentioned prior art, since a non-rewritable storage medium such as a write-once optical disc is used as the storage medium, a part of the data such as the supplementary information is rewritten after the image data is recorded. I can't. For this reason, when changing the data, it is necessary to erase all or part of the image data and then rewrite to the empty recording area of the same write-once optical disc or another write-once optical disc, which wastes storage capacity. use. Further, although it is often desired to set the image data storage obligation information after the image data is recorded in the storage medium, there is a problem in that it cannot be set.

SUMMARY OF THE INVENTION An object of the present invention is to provide a medical image data filing apparatus capable of additionally recording information indicating a security state such as image data storage obligation information without wasting the storage capacity of a large capacity storage device.

[0005]

The above object is to provide a medical image data filing apparatus which uses a non-rewritable storage medium and which is provided with a mass storage device for filing digitized medical image data in the storage medium. The storage medium is provided with an unwritten area in which additional recording can be performed later for each image data, and after recording the image data, predetermined information can be additionally written in the unwritten area.

[0006]

The storage medium is provided with an unwritten area in which additional recording is possible for each medical image data after recording, and after recording the image data, a predetermined security information such as image data storage obligation information is stored in the unwritten area. The information shown can be added.

The image data is not always recorded in the storage medium after the diagnosis of the image by the image data, but the image diagnosis may be performed after the recording in the storage medium. In addition, not all captured images are used for diagnosis, and it is necessary to distinguish between images used for diagnosis and images not used. Therefore, by securing a region for recording such information in advance, it becomes possible to additionally write the information after recording the image data. Furthermore, image data for which retention obligation information is set (recorded in a non-rewritable storage medium)
On the other hand, even if the erasing command and the writing command are issued, the erasing command and the writing command can be blocked by the storage obligation information, and the loss or falsification of the image data can be prevented.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 4 is a block diagram showing a schematic configuration of a medical image management apparatus provided with the medical image data filing apparatus according to the present invention.

In FIG. 4, 10 is a high-speed local area network using an optical fiber connecting each part of the apparatus, 11a and 11b are image workstations for displaying images, and 13, 14, 15, and 16 are X stations. Image data generators 12a, 12 for generating image data, such as line CT device, MRI device, CR device and DR device
b, 12c, 12d are image data generators 13, 14,
It is a converter that can convert image data in various formats received from 15 and 16 into the same image format and can also be used as a buffer of image data.

Reference numerals 17a and 17b denote medical image data filing devices (also simply referred to as image data filing devices) equipped with a large-capacity external storage device capable of storing a plurality of non-rewritable large-capacity storage media. Reference numerals 18a and 18b are image data filing control devices that control the image data filing devices 17a and 17b, and 19 is a database device that manages attribute information of image data and performs image retrieval and the like.

FIG. 5 shows the construction of the image data filing control device 18 (18a, 18b) and the image data filing device 17 (17a, 17b) part taken out.

In FIG. 5, 21 is an MPU unit for controlling the entire control device 18, 22 is a memory unit for storing programs and various tables, 23 is an image processing unit for image processing, an image display unit for image display, etc. And 24 is a network interface for connection with the network 10.
Reference numeral 25 is an interface with a magnetic disk device 26 for storing image data, an image information table, programs and various tables, and 27 is the image data filing device 17 having a large capacity external storage device (optical disk device).
Interface for connection with (17a, 17b), 2
Reference numeral 9 is a main bus that connects the respective parts of the control device 18.

4 and 5, each image generating device 1
The image data generated in 3 to 16 is stored in each image generation device 13
Image data filing control device 18 (18a, 18b) via the network 10 after being transferred to the converters 12a to 12d connected to the device 16 to 16 and subjected to necessary processing such as image format conversion in the converters 12a to 12d.
Sent to.

The image data filing control device 18, which has received the image data, temporarily stores it in a temporary buffer (internal storage device), here a magnetic disk device 25. After that, the image data is registered in the storage medium in the image data filing device 17 (17a, 17b).
Here, the storage medium (external storage medium) in the image data filing device 17 is a write-once optical disc (WORM),
Save image data in large quantities and in the long term.

Next, a medical image data filing apparatus according to the present invention will be described with reference to FIGS. Figure 1
FIG. 6 is a diagram for explaining an embodiment of the device of the present invention and is an explanatory diagram of an example of a disk format of a write-once optical disc which is an image data storage medium in a large-capacity external storage device provided in the device of the present invention. As shown in FIG. 1, the disk format is roughly divided into three partitions (areas) 31 to 31.
It is divided into 33. Of these, volume label area 3
Reference numeral 1 is an area for recording volume management information (volume identifier, physical record information, etc.) 31a, and is composed of one record per one side of a write-once optical disc. The index area 32 includes allocation information (positional information) 32a of image data and information (patient information, examination information, image information, etc.) 32b used when searching image data.
Is an area in which one image data is recorded. The data file area 33 is an area for recording image data, and the image data includes the attribute information section (data set name, patient information, examination information,
33 a and the actual data part 33 b are paired to form one data set. Here, the file attribute information section 33a is provided with an unwritten area 51 in which additional recording can be performed later for each image data when the image data is recorded on the write-once optical disc.

FIG. 2 is an explanatory view of another example of the disc format of the write-once optical disc which is the image data storage medium in the large-capacity external storage device provided in the device of the present invention.
The difference from the example illustrated in FIG. 1 is that the attribute information section 33 of the image data file forming the data set in FIG.
The point is that a and the actual data section 33b are recorded in different partitions (file attribute information area 34, data file area 35).

Next, the operation of the present invention will be described with reference to FIG. The image data is the file attribute information section 3 of the image data.
3a and the actual data part 33b are recorded as a pair on the write-once optical disc. When recording image data on the write-once optical disc, as shown in FIG.
a is an area in which the unwritten area 51 (n + 1) to (n + 3) sectors are added to the n sector, which is the area in which the actual attribute information is recorded, and the area is secured, and the attribute information is recorded on the write-once optical disc. To do.
Since the write-once optical disc writes data in units of sectors, the area is secured not by the actual data length but by the number of sectors that can store the actual data. This is the unwritten area 51
The (n + 1) to (n + 3) sectors are secured as areas that can be additionally written later, and after the image data is written on the write-once optical disc, additional information regarding the image is additionally written.

The unwritten area 51 has a security status 52 of image data as shown in FIG. 3B, for example.
Used to record. The security status 52 is a status indicating the storage state of the image data, and is divided into four statuses here. The first is a status indicating merely image data, a first (Not Specified) status in which the image data can be copied, erased, and written, and the second is an X-ray C which is various image data generators.
The second (original) status indicates that the image data generated from the T apparatus, MRI apparatus, CR apparatus, DR apparatus, etc. can be read and erased. The third is the second
A third (Authorized Origina) that indicates that image data with the (Original) status was read by a doctor and used for medical treatment, and cannot be erased or written.
l) Status, 4th, when the image data of the third (Authorized Original) status used by the doctor for the medical examination is copied to another optical disc, the third (Authorized Original) is added to the image data of the copy destination. ) A fourth (Authorized Copy) status indicating that the image data of the status has been copied, and that erasing and writing are impossible.

In order to enable the additional writing of these four security statuses, three unwritten areas are provided here as shown in FIG. 3 (a). Further, FIG. 3B shows an example in which meaning is set for each sector so that the four security statuses can be expressed by three sectors. This setting takes into consideration the change in the security status of the image data, and the state of the security status set in the unwritten sector is additionally written according to the order in which the security status changes.

Note that in the example shown in FIG.
Three sectors are provided for the unwritten area to enable the additional writing of the status, but if other information is to be changed, the required area must be an integer multiple of the minimum writing unit of the write-once optical disc to secure it. Good.

According to the above-described embodiment, the security status of the image data recorded on the write-once optical disc can be changed without erasing and rewriting the target image data, and there is a storage obligation. It is possible to protect the image data (image data with the 3rd and 4th status) from being deleted by making a judgment based on the status and rejecting it. Becomes

In the above embodiment, the case where the apparatus of the present invention is independently connected on the high-speed local area network of the medical image management apparatus has been described as an example, but even if it is connected to the image workstation, for example. Of course, even in this case, it is possible to obtain the same effect as that of the above-described embodiment.

[0023]

As described above, according to the present invention, when a situation arises in which the image attribute information or the like of image data recorded in a non-rewritable storage medium such as a write-once optical disc is changed later, For example, even if the security status is changed, it can be changed without erasing and rewriting the target image data, indicating the security status such as storage obligation information of image data while preventing waste of storage capacity. The effect is that information can be added.

In particular, as in the above-described embodiment, if the security status is set as the writing information to the unwritten area that can be additionally written later for each image data, it is made impossible to tamper with the image data that must be saved. An erase command and a write command for the image data (the image data with the third status or the fourth status added) can be judged from the added status and its execution can be rejected, so that there is an erroneous storage obligation. It is possible to prevent the image data from being erased and protect the image data that cannot be tampered with.

[Brief description of drawings]

FIG. 1 is a view for explaining an embodiment of the device of the present invention,
It is an explanatory view of an example of the disc format of a write-once type optical disc which records image data.

FIG. 2 is an explanatory diagram of another example of the disc format of the write-once optical disc.

FIG. 3 is a diagram showing an example of setting a main part of a disk format and security status in FIGS. 1 and 2;

FIG. 4 is a block diagram showing a schematic configuration of a medical image management apparatus equipped with the device of the present invention.

5 is a block diagram showing the image data filing control device and the device portion of the present invention in FIG.

[Explanation of symbols]

10 High-speed local area network 11a Image workstation 11b Image workstation 12a-12d Converter 13-16 Image data generator 17 (17a, 17b) Image data filing device 18 (18a, 18b) Image data filing controller 19 Database device 21 MPU Unit 22 Main unit 23 Image processing and image display unit 24 Network interface 25 Magnetic disk device interface 26 Magnetic disk device 27 Image data filing device interface 29 Main bus 31 Volume label area 31a Volume management information 32 Index area 32a Image data allocation Information (positional information) 32b Information used when searching image data (patient information) Information, examination information, such as image information) 33 data file area 33a file attribute information section 33b real data section 34 file attribute information area 35 data file area 51 unwritten area

Continuation of front page (51) Int.Cl. ⁶ Identification number Office reference number FI Technical display location G06F 19/00

Claims (3)

[Claims] 1. A medical image data filing apparatus comprising a non-rewritable storage medium and a mass storage device for filing digitized medical image data in the storage medium, wherein the storage medium is for each image data. 1. A medical image data filing device, comprising an unwritten area in which data can be additionally written later, and after recording image data, predetermined information can be additionally written in the unwritten area. 2. The medical image data filing apparatus according to claim 1, wherein the unwritten area is provided in an image attribute information section which is additional information of the image data. 3. The image attribute information section is set to indicate the security status of the image data at each position of the minimum recording unit of the unwritten area, the size being an integral multiple of the minimum unit that can be described later. The medical image data filing apparatus according to claim 2, wherein the state can be set later.