JP2005021573A - Imaging apparatus, setting management method thereof, and data management program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an imaging apparatus having an access limitation on important setting to prevent an inexperienced operator from erroneously changing the setting of a system. <P>SOLUTION: An operator's input operation to an X-ray imaging apparatus is performed accessing a system database means via an access control means referring to an access control database means, and a display means is provided for showing the operator the access limitation on operation acquired from an access control database. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a digital X-ray imaging system using a solid-state imaging device, and more particularly to a data management method and a data management program for restricting access to an operator when changing device settings in the imaging device.

  Conventionally, a film screen system in which an intensifying screen and an X-ray photographic film are combined is widely used for X-ray imaging for the purpose of medical diagnosis. The film image is designed so that the film image taken by X-ray is observed on a shaucusten and has a density range of about 1.0 to 1.5D which is easy to observe at the diagnostic site. However, if the imaging conditions are deviated, overexposure and underexposure are likely to occur, which adversely affects diagnosis.

  In recent years, an X-ray digital imaging apparatus employing an FPD (Flat Panel Detector) that converts an electric signal proportional to the intensity of X-rays has started to be used. In this photographing apparatus, since the feature of the image is extracted by the image processing technique, the problem of exposure adjustment, which has been a problem in the past, can be solved. It also has a function of improving diagnostic ability by image processing such as image enhancement.

Conventionally, in order to identify an operator when using an X-ray imaging system, there is an apparatus that can be operated only by logging in and logging out (see, for example, Patent Document 1). Since it is cumbersome to use and is operated while logged in, it was not realistic. In order to solve this problem, there has been an invention in which an automatic logout is performed if the device has not been used for a certain period of time.
JP 2002-153568 (page 3-4)

  An imaging order ordered by a doctor is returned to the doctor as an X-ray image using the imaging apparatus and used for diagnosis, but an unfamiliar operator mistakenly changes the image processing conditions of the X-ray imaging apparatus If saved, the automatic exposure adjustment and image processing conditions as described above will change, so that even if the shooting is successful, the subsequent shot image is output as an inappropriate image for diagnosis, which greatly affects the diagnosis. was there. Moreover, when outputting to a film, it leads to discarding a film, and the time required for correction and the loss of a film cost generate | occur | produce. In the X-ray imaging apparatus according to the present invention, access restrictions are set for imaging conditions and settings that affect the operation of the image or the system, and only the operator with the correct authority can change the settings when necessary. An object of the present invention is to provide an X-ray imaging apparatus having a function to control the above.

  On the other hand, since it is troublesome to input a password every time, an object is to provide an X-ray imaging apparatus that stores access rights and does not hinder the operation of routine work.

  1: In order to solve the above-described problem, the image capturing apparatus of the present invention has means for setting a function for restricting access in advance and means for inputting a password for the restricted access operation. Only the user can change the settings.

  2: The image capturing apparatus of the present invention has a plurality of access authorities, and automatically switches the access control method according to the comparison means for determining the access authority based on the password input by the operator and the determined access authority. Yes.

  3: The image capturing apparatus of the present invention has an inspection end detection means, and automatically resets the access restriction when the inspection ends.

  4: The image photographing apparatus of the present invention automatically resets the access restriction when returning from the setting screen to the photographing screen.

  5: The image capturing apparatus of the present invention has an authority not to automatically reset the access authority depending on the input password.

  6: The image capturing apparatus of the present invention has a display means for displaying the restricted state with an icon or a color for the setting for which the access is restricted, and notifying the operator.

  7: The image capturing apparatus of the present invention has display means for displaying the restriction release state in an icon color with respect to the setting for which the access restriction is applied, and the access restriction is released to the operator. Control means for informing is provided.

  8: The image capturing apparatus of the present invention is configured to prohibit the change of the database or restrict the browsing to only when the password authentication fails.

  9: In order to solve the above-described problem, an access control method for a photographing apparatus of the present invention includes a step of restricting access to a database by a password, a control step of switching an access control method by the input password, and the access And a step of displaying a control state.

  10: The access control method of the photographing apparatus of the present invention includes a control step of automatically resetting the access control state.

  11: In order to solve the above problem, an access control program for a photographing apparatus according to the present invention inputs the step of accessing the photographing database via the access control database in order to restrict access to the photographing database. The computer is caused to execute a control step of switching the access control method by the password and a step of displaying the access state.

  12: The access control program for the photographing apparatus of the present invention has a control step of automatically resetting the access restriction state in accordance with the use state of the system in the access control step.

  As described above, if the present invention is organized and summarized, it can be integrated into the following configurations.

  (1) An X-ray imaging apparatus having means for setting a function for restricting access in advance, requesting a password from an operator for an access-restricted operation, and allowing the setting only to an authorized operator An image photographing apparatus characterized by that.

  (2) In the above (1), the comparison means having a plurality of access authorities and judging the access authority based on the password inputted by the operator and the access control method are automatically switched according to the determined access authority. The image photographing apparatus described.

  (3) The image capturing apparatus according to (2), wherein the access control method includes an inspection end detection unit and automatically resets the access restriction when the inspection ends.

  (4) The image capturing apparatus according to (2), wherein the access control method automatically resets access restrictions when returning from the setting screen to the shooting screen.

  (5) The image capturing apparatus according to (2), wherein the access control method has an authority not to automatically reset an access authority.

(6) For the setting with the access restriction, the restriction state is displayed with an icon or a color,
The image photographing apparatus according to (1), further comprising display means for notifying an operator.

  (7) It has a display means for displaying the restriction release state with an icon or a color for the setting with the access restriction, and a control means for notifying the operator that the access restriction is released. The image photographing device according to (6), characterized in that:

  (8) The image photographing apparatus according to (1), wherein when the password authentication fails, the database change is prohibited or restricted to browsing only.

(9) An imaging device access control method,
Setting management of an X-ray imaging apparatus, comprising: a step of restricting access to a database by a password; a control step of switching an access control method according to the input password; and a step of displaying the access control state Method.

  (10) The setting management method according to (9), further including a control step of automatically resetting the access control state.

(11) An access control program for the photographing apparatus,
A step of accessing the imaging database via an access control database in order to perform access restriction to the imaging database; a control step of switching an access control method according to the input password; and a step of displaying the access status A data management program for an image capturing apparatus, characterized by causing a computer to execute.

  (12) The data management program for an image capturing apparatus according to (11), wherein the access control step includes a control step of automatically resetting an access restriction state according to a use state of the system.

  As described above, according to the present invention, the password is confirmed only when an operator without access authority to the database attempts to change the setting of the X-ray imaging system without affecting the workflow in the hospital. Can prevent the change. Further, since an operator with access authority is prompted to input a password when trying to change the system setting, it is possible to call attention that the user has made an important setting change.

  In addition, when a normal operator with access authority finishes one inspection, the state of access authority being set is automatically released by the control method of the present invention, so the administrator forgets to release the access restriction, It is possible to prevent an operator without access authority from changing the setting.

  Also, if you have entered a serviceman authority password, you can continue setting without automatically canceling the access authority.

  Next, examples of the present invention will be described.

  FIG. 1 is a block diagram showing a system configuration of a digital X-ray imaging apparatus according to an embodiment of the present invention. The medical digital X-ray imaging apparatus 4 includes an image reading control unit 3 that synchronizes exposure between the FPD 1 including a phosphor and a large-screen photoelectric conversion device and the X-ray generation device control unit 23 and accumulates images. A CPU 10, a RAM 11 for storing a control program, a hard disk 12 for storing captured images, a disk interface (I / F) 13, a user I / F 16 for an operator, and a LAN I / F 15 for communication with an external device.

  Reference numeral 10 denotes a host CPU that executes a control program according to the present invention in the X-ray imaging apparatus 4. Reference numeral 11 denotes a RAM in which the control program according to the present invention is stored. The control program 6 is read from the hard disk 12. To make it work. Reference numeral 7 denotes a RAM for temporarily storing captured images secured on the RAM 11.

  The FPD 1 and the image reading control unit 3 are connected to each other through a data line 2 for power supply, image transfer, and control signals. A hard disk 12 stores the program of the present invention that runs on the host CPU 10. Furthermore, it also serves as a temporary storage of correction information necessary for shooting and shot images. 14 is an internal bus of the X-ray imaging apparatus, 15 is a LAN I / F, and receives an imaging order from the external ordering apparatus 22, or is used by an external device such as a printer 20 or PACS 21 for diagnosis. Used to send.

  Reference numeral 16 denotes a user I / F unit that interfaces with an operator of the X-ray imaging apparatus using a display device 17 for display and an input device 18 such as a keyboard and a mouse. Of course, the display and input units 17 and 18 can be replaced with a touch panel device.

  First, the CPU 10 of the X-ray imaging apparatus 4 receives ordering information from the radiology information system (RIS) from the order apparatus 22 on the LAN 19. In the present embodiment, a list of received ordering information is displayed from the user I / F unit 16 on the display 17 as shown in FIG. When a radiographer who is an operator of the X-ray imaging apparatus selects an examination displayed on 30 with the input device 18, the control program 6 executed by the CPU 10 changes the screen displayed on the display 17 to make a detailed imaging order. Display information.

  FIG. 3 is a diagram showing a display example of the display unit 17 in the embodiment of the present invention.

  In order to present the patient selected at 30 to the operator, the CPU 10 displays patient information such as patient ID, name, date of birth, etc. on 34. In addition, an imaging order composed of imaging parts received from the ordering device 22 is displayed at 31.

  Reference numeral 32 denotes imaging conditions stored by the above-described button representing the imaging region. 35 is used to display the state of the photographing apparatus.

  The buttons store image processing parameters and shooting conditions suitable for individual shooting methods in a database (DB) in the hard disk 12. According to the program of the present invention, it is read from the DB by pressing a button, stored in the control program RAM 6, and used for photographing.

  The CPU 10 enters an imaging operation, and selects the “front of chest” button, which is the first imaging part of the ordering information 31 shown in FIG. The operator places the patient to be imaged between the FPD 1 and the X-ray tube 24 and positions the patient in the imaging posture. In the meantime, the CPU 10 applies a voltage to the FPD 1 by the system control program 6 and prepares to perform X-ray imaging with the FPD. When the control program 6 detects that the FPD 1 is ready for X-ray imaging, 35 is displayed as READY.

  After confirming the screen, the operator presses the exposure switch 25 and inputs a trigger for generating X-rays to the system. An exposure signal generated from the exposure switch 25 is input to the image reading control unit 3 via the synchronization signal line 5. The image reading control unit 3 generates an exposure permission signal 5 after confirming whether the FPD 1 is ready for photographing in the state of the control signal 2. The exposure permission signal 5 is returned to the X-ray generator control unit 23, and the X-ray generator control unit 23 generates X-rays from the X-ray tube 24.

  After the X-ray irradiation, the system acquires X-rays transmitted through the patient as digital data by the FPD 1 through the phosphor and transfers the digital data to the image reading unit 3. Next, the CPU 10 executes the control program 6 and changes the screen of the user I / F unit 16 as shown in FIG.

  The CPU 10 displays the image data acquired from the image reading control unit 3 on 40, and displays the X-ray generation condition on 41 on the user I / F 16 and stores it in the hard disk 12 as imaging execution information.

  42 shows an example of a density adjustment parameter. The control program 6 executed by the CPU 10 performs image analysis and automatically analyzes the image density. If there is a problem with the automatic density adjustment of the image displayed on 40, the operator can change the density of the captured image by adjusting the parameter 42.

  When the operator finishes confirming the photographed image on the screen shown in FIG. 4, in order to perform the next photographing, the operator presses the “next photographing” button 43 on the screen to return to the screen shown in FIG. The user I / F unit 16 selects the next imaging part ordered, and causes the operator to repeatedly execute the same imaging flow as described above until all imaging orders are completed.

  When all the photographing orders are completed, there is no next photographing, so the CPU 10 changes the button shown at 43 to “examination completed”. When the operator presses the button 43, the examination of the patient can be completed.

  As described above, the engineer who is the operator takes an image of the subject according to the ordering information issued by the doctor. The digital X-ray imaging apparatus is an imaging apparatus that accurately and quickly acquires an X-ray image of an imaging region ordered by a doctor.

  After the operator changes the image processing parameter with the parameter 42, the image is checked, and if it is determined that the changed parameter is to be used in the future, the parameter save button 45 is pressed to issue a save instruction to the system database. Here, the save button 45 is displayed with an icon different from a normal button by the program of the present invention. For example, it is expressed as a button to which a yellow key icon indicating that there is an access restriction is added, and indicates that the operator is in a protected state.

  When the operator presses this button, the system is trying to access restricted data, and the control program prompts for a password.

  After the operator inputs an accurate password, the display of the key icon displayed in yellow is changed to a blue key icon indicating that it has been released by the program of the present invention. This is an example of indicating to the operator that the access restriction has been canceled by correctly entering the password. Of course, the key icon may be deleted or another expression method may be used. Thereafter, the operation inherent to the button, in this example, the save operation is executed.

  If the operator does not know the password, the password screen provided by this program will be rejected and the save operation will not be executed. This mechanism limits access to the operator and guarantees system safety.

  When the inspection is completed, the control program 6 transmits the photographing conditions and photographing execution information stored in the hard disk 12 to the ordering device 22. The control program 6 informs the ordering apparatus 22 that the imaging of the examination has been completed in accordance with a predetermined communication protocol. At this time, the imaging conditions under which the imaging was performed and the imaging execution information such as the irradiation dose are transmitted.

  In addition, the captured images are output together with image data with the above-mentioned imaging conditions and imaging execution information as supplementary information according to a medical standard communication protocol called DICOM, and the images are used for diagnosis by a doctor. The

  When the examination is finished, the technician leaves the X-ray imaging device to check the image that has been taken, and checks the diagnostic image on the image display device, confirms the output film, and delivers it to the doctor. Work to put in. Meanwhile, another technician may use the X-ray imaging apparatus. In that case, if the access restriction is still released, there is a possibility that the setting is accidentally changed by an operator without access authority.

  Therefore, upon completion of the inspection, the CPU 10 resets the state where the access restriction of the X-ray imaging apparatus in the database is released, and automatically shifts to the protected state.

  In addition, when a password input is requested on the setting screen and saved in the DB and then moved from the setting screen to the shooting screen, if a user forgets to reset, a general operator can save parameters on the shooting screen. Therefore, when entering the shooting mode, the CPU 10 executes a program so as to automatically cancel the password input state, and returns to the protected state.

  FIG. 5 shows an access control procedure of the program of the present invention which is performed by the CPU 10 when the operator instructs a save operation.

  In the access control DB 53, password addition can be set for each function, which is read from the access DB 53 when the X-ray imaging system is activated, and is displayed as an icon indicating a protected state distinguished from a general button on a screen configured by software. Since the access control means 51 determines the current state and continues the subsequent password input process, it can be used without the operator being aware of the state of the system when operating the X-ray imaging apparatus. Needless to say, access to the access control DB 53 is further restricted by a control program executed by the CPU 10 or a DB function.

  When the operator presses the parameter save button 45, the access control means 51 acquires the access state from the access control DB 53, and detects that the DB access of the X-ray imaging system is in the protected state. Then, a password input screen is displayed on the display device 17. When the operator inputs a correct password, the save operation is permitted and saved in the system setting DB 52. However, if the operator does not know the password, the access control means 51 configured by the control program executed by the CPU 10 rejects the operation, and the operation does not proceed to 55 but returns to 56.

  Once the access state is released from the protected state, it is troublesome for the operator to input the password again. Therefore, the access control means 51 holds the password release state. However, when an operator leaves the X-ray imaging apparatus after imaging, the possibility that another operator who continues to use the X-ray imaging apparatus may perform a change operation without entering the password without knowing it must be excluded. I must.

  Therefore, the access control DB 53 is reset by notifying the access control means 51 of the operation to end the inspection, and returned to the protected state.

  Similarly, in the case of setting change, the lock icon indicates that access is restricted, and if the operator enters the correct password, the change screen is entered and the change operation is permitted. The program is controlled to allow only viewing of settings.

  Furthermore, when a service person performs maintenance work on the X-ray imaging apparatus, if the password is requested during the work, work efficiency deteriorates. Therefore, when a password for a serviceman is input at the time of a password input request, the access control means 51 detects that the serviceman is in a privileged state and stops the automatic password reset function. That is, at least two passwords, that is, a password used by the administrator and a password used by the service person are stored in the access control DB 53, and the access authority is switched according to the password input. Thereafter, the access authority is controlled in accordance with changes in the use state of the X-ray imaging apparatus, such as the end of the examination and system settings.

  Next, password input processing when a function with access restriction is used will be described using the flowchart of FIG. The access control DB stores function settings with access restrictions, settings for whether or not re-input is permitted, and operator password information.

  In step S100, the CPU 10 inquires the access control DB 53 and acquires the current access state. If it is in the protected state in step S101, the process proceeds to step S102 to display a password input screen and prompt the operator to input. In step S103, the CPU 10 compares the input password with the password information in the access control DB 53, and determines whether the input is valid in step S104. If the input value is correct in step S104, the access restriction is canceled in step S105, and the access restriction process is terminated.

  If it is in the protected release state in step S101, it is determined that an operator with access authority is using it, and the access restriction process is terminated.

  If the password input in step S104 is not correct, the process proceeds to step S106 to determine whether the function requires re-input. If re-input is necessary, the process proceeds to step S102 to prompt the operator to re-input. If the function does not require re-input in step S106, the process proceeds to step S107, the access control DB 53 is set to read, and the process ends. In this case, only the browsing is permitted without changing the parameter DB. If the password is not entered in step S102, the process ends from step S104.

  In the above embodiment, the case where the control program is stored in the HD, transferred to the RAM, and executed by the CPU has been described. However, the present invention is not limited to this, and may be realized using any storage medium. Further, it may be realized by a circuit that performs the same operation.

  The present invention may be applied to a system composed of a plurality of devices or an apparatus composed of a single device. A recording medium recording software program codes for realizing the functions of the above-described embodiments is supplied to a system or apparatus, and a computer (or CPU) of the system or apparatus reads and executes the program codes stored in the recording medium. Needless to say, this can be achieved. In this case, the program code itself read from the recording medium realizes the functions of the above-described embodiment, and the recording medium on which the program code is recorded constitutes the present invention.

  As a recording medium for supplying the program code, for example, a flexible disk, a hard disk, an optical disk, a magneto-optical disk, a CD-ROM, a CD-R, a magnetic tape, a nonvolatile memory card, a ROM, or the like can be used.

  Further, by executing the program code read by the computer, not only the functions of the above-described embodiments are realized, but also an OS running on the computer performs actual processing based on an instruction of the program code. Needless to say, a case where the function of the above-described embodiment is realized by performing part or all of the processing is also included.

  Furthermore, after the program code read from the recording medium is written in a memory provided in a function expansion board inserted in the computer or a function expansion unit connected to the computer, the function expansion is performed based on the instruction of the program code. It goes without saying that the CPU or the like provided in the board or the function expansion unit performs part or all of the actual processing, and the functions of the above-described embodiments are realized by the processing.

  Note that the present invention is also applicable to a case where the program is distributed to a requester via a communication line such as the Internet from a storage medium in which the program code of the software realizing the functions of the above-described embodiments is recorded. is there.

1 is a block diagram showing the configuration of an X-ray imaging apparatus according to an embodiment of the present invention. The figure which shows the example of a photography order list display of a display part The figure which shows the example of a photographing screen of a display part The figure which shows the state after imaging | photography of a display part Conceptual diagram showing the DB access control method Flow chart showing DB access control method

Explanation of symbols

1 FPD
2 control signal line 3 image reading control unit 4 X-ray imaging apparatus 5 exposure control signal line 6 control program RAM
7 Image storage RAM
10 CPU
11 RAM
12 Hard disk 13 Disk I / F
15 LAN I / F
16 User I / F
17 Display device 18 Input device 19 LAN
20 Medical Printer 21 PACS
22 Ordering device 23 X-ray generator control unit 24 X-ray tube 25 Exposure switch 31 Order display unit 32 Imaging condition display unit 34 Patient information display unit 35 Message display unit 36 Imaging end instruction button 40 Captured image display unit 41 Implementation of imaging Information display section 42 Image processing parameter 43 Next shooting instruction button 45 Parameter save button

Claims (12)

An X-ray imaging apparatus having means for setting a function for restricting access in advance, requesting a password from an operator for an access-restricted operation, and allowing the setting only to an authorized operator An image photographing device. 2. The image photographing according to claim 1, wherein a comparison means having a plurality of access authorities and judging the access authority based on a password inputted by an operator and an access control method are automatically switched according to the determined access authority. apparatus. The image access apparatus according to claim 2, wherein the access control method includes an inspection end detection unit and automatically resets the access restriction when the inspection ends. The image capturing apparatus according to claim 2, wherein the access control method automatically resets the access restriction when returning from the setting screen to the shooting screen. The image capturing apparatus according to claim 2, wherein the access control method has an authority not to automatically reset an access authority. For the setting with access restriction, the restriction status is displayed with an icon or color,
The image photographing apparatus according to claim 1, further comprising display means for notifying an operator. It has a display means for displaying the restriction release state with an icon or a color for the setting with the access restriction, and has a control means for notifying the operator that the access restriction is released. The image photographing device according to claim 6. The image capturing apparatus according to claim 1, wherein when the password authentication fails, database change is prohibited or restricted to browsing only. An access control method for a photographing apparatus,
Setting management of an X-ray imaging apparatus, comprising: a step of restricting access to a database by a password; a control step of switching an access control method according to the input password; and a step of displaying the access control state Method. The setting management method according to claim 9, further comprising a control step of automatically resetting the access control state. An access control program for a photographing device,
A step of accessing the imaging database via an access control database in order to perform access restriction to the imaging database; a control step of switching an access control method according to the input password; and a step of displaying the access status A data management program for an image capturing apparatus, characterized by causing a computer to execute. 12. The data management program for an image capturing apparatus according to claim 11, wherein the access control step includes a control step of automatically resetting an access restriction state according to a use state of the system.

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