JP2008015842A - Medical system and medical virus handling program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a technique to enable safe and stable virus handling when a medical system is infected with a computer virus. <P>SOLUTION: In a medical system for diagnosing or treating a subject of an X-ray diagnostic apparatus, an X-ray treatment apparatus, an X-ray CT apparatus, a magnetic resonance imaging apparatus, a nuclear medicine diagnostic apparatus, or the like, a control path is made redundant by various software control means, and various hardware control means which are fungible for the software control means concerned; a seriousness table which defines seriousness to a system for every computer virus and a handling table which defines virus handling corresponding to the seriousness are stored, a computer virus is searched for in a file, and virus handling is carried out based on the seriousness table and the handling table. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a virus countermeasure technique for a medical system.

  In recent years, as computer processing speed has improved, medical systems for diagnosing or treating a subject such as an X-ray diagnostic apparatus, an X-ray therapy apparatus, an X-ray CT apparatus, a magnetic resonance imaging apparatus, and a nuclear medicine diagnostic apparatus have been developed. Also, software control by a computer is used for the control. The computer decodes and executes the control program to generate control signals and send them to the controller. According to software control, the process before the generation of the control signal can be freely designed according to the specifications. In addition, due to rapid networking in recent years, cooperation between a medical system and another computer has come to be performed.

  Therefore, there is a risk that the medical system is also infected with a so-called computer virus. A computer virus has a function of infecting files such as a program to be decoded and executed by a computer and data to be referred to, hidden until the execution of the program, and causing disease along with the execution of the program. This causes the computer to execute an operation that is not intended by the operator, and has various effects on the computer and peripheral devices.

  In order to cope with such a computer virus, software that detects infection of a computer virus and performs countermeasures such as removal, isolation, and deletion is installed in a PC (personal computer) or the like. Disinfection deletes only computer viruses contained in files, quarantine moves files infected with viruses to the quarantine directory, and delete deletes infected files.

  Software for countermeasures against computer viruses is also installed in the medical system in the medical system (see, for example, “Patent Document 1”).

JP 2004-86301 A

  The medical system is a system for diagnosing or treating a subject. For example, since the subject is exposed to X-rays or the like, its operation must be particularly safe and stable.

  However, computer viruses that have a serious impact on medical systems do not always match computer viruses that have a serious impact on PCs. Even if a computer virus can be disinfected, quarantined or deleted on a PC, if the computer virus is disinfected, quarantined or deleted in a medical system, the medical system may suddenly stop depending on the infected file. And may have a serious impact on stability.

  The present invention has been made in view of the above problems, and an object thereof is to provide a technique that enables safe and stable virus countermeasures when a medical system is infected with a computer virus. .

  The invention described in claim 1 for solving the above-mentioned problems is a medical means for diagnosing or treating a subject, various software control means for controlling the medical means, and at least a part of the various software control means. And various hardware control means for controlling the medical means, storage means for storing various files including application files for realizing the various software control means, and files stored in the storage means Search means for searching for a computer virus, a severity table for storing a definition of severity for the system for each computer virus, a handling table for storing virus countermeasures corresponding to the severity, the severity table, and the handling table And a countermeasure means for dealing with a virus based on To.

  The invention according to claim 2 for solving the above-mentioned problems is a medical means for diagnosing or treating a subject, various software control means for controlling the medical means, and at least a part of the various software control means. And various hardware control means for controlling the medical means, storage means for storing various files including application files for realizing the various software control means, and various files stored in the storage means Search means for searching for computer viruses and identifying infected computer viruses and infected files, a handling table storing virus handling corresponding to a combination of the infected computer viruses and infected files, and a virus based on the handling table Providing coping means for coping The features.

  The invention according to claim 5 for solving the above-mentioned problems is a medical means for diagnosing or treating a subject, various software control means for controlling the medical means, and at least a part of the various software control means. And a variety of hardware control means for controlling the medical means, and a file storage means for storing various files including application files for realizing the various software control means. Alternatively, a medical system for treatment corresponds to search means for searching for a computer virus from various files stored in the storage unit, a severity table for defining the severity of the system for each computer virus, and the severity Table storage means for storing a countermeasure table that defines a virus countermeasure, and the depth And addressing means for the virus addressed based and time table in the address table, thereby to function, and wherein.

  The invention according to claim 6 for solving the above-mentioned problems is a medical means for diagnosing or treating a subject, various software control means for controlling the medical means, and at least a part of the various software control means. And a variety of hardware control means for controlling the medical means, and a file storage means for storing various files including application files for realizing the various software control means. Alternatively, a medical system for treating, a search means for searching for a computer virus from various files stored in the storage unit, and a computer virus for searching for a computer virus from various files stored in the storage means, Search means for identifying infected files and the infected computer virus It said storage means for storing the address table defining viral Action corresponding to the combination of infected files, and addressing means for the virus address based on the address table, thereby to function, and wherein.

  According to the present invention, a seriousness table for storing the seriousness of the system for each computer virus and a countermeasure table for storing a virus countermeasure corresponding to the seriousness are stored, and a computer virus is searched from the stored file to search the seriousness table. And virus handling based on the handling table. As a result, it is possible to deal with viruses that are specialized for medical systems, and the safe and stable operation of medical systems becomes possible.

  In addition, a countermeasure table that defines virus countermeasures corresponding to the infected file and severity, that is, a combination of an infected computer virus and an infected file, is stored, and a countermeasure is taken based on the countermeasure table. Thereby, the evaluation for the combination of the computer virus and the infected file is optimized according to the medical system, and safer and more stable operation is possible.

  Hereinafter, a preferred embodiment of a medical system according to the present invention will be specifically described with reference to the drawings.

  FIG. 1 is a perspective view showing an appearance of a medical system according to the present embodiment.

  A medical system is a modality used for diagnosis or treatment in a medical field. An X-ray diagnostic apparatus, an X-ray therapeutic apparatus, an X-ray CT apparatus, a magnetic resonance imaging apparatus (MRI apparatus), a nuclear medicine diagnostic apparatus (SPECT apparatus) Or PET apparatus).

  The medical system according to the present embodiment is an X-ray diagnostic apparatus 100 that detects X-rays that have been exposed to X-rays and transmitted through a subject P. The detected X-ray intensity is arranged as a pixel value according to the detection position, and image data in the subject is obtained.

  The X-ray diagnostic apparatus 100 has a fluoroscopic mode and an imaging mode. The fluoroscopic mode is used for specifying a diagnosis site, and the X-ray dose is smaller than that in the imaging mode, and the obtained image data is displayed on the monitor M. The imaging mode is used for diagnosing a specific part. The X-ray dose is larger than that in the fluoroscopic mode, and the obtained image data is subjected to image processing and stored.

  The X-ray diagnostic apparatus 100 is fixed to the ceiling with a ceiling mounting portion 1. A support arm 2 having a curved shape is supported on one end of the ceiling mounting portion 1 by hanging. An actuator is included in the connecting portion of the support arm 2 and the ceiling mounting portion 1, and the support arm 2 rotates about an axis that passes through one supported end and is orthogonal to the ceiling plane and the floor plane.

  A C arm 4 is supported on the support arm 2 via an arm holder 3. The C arm 4 has a substantially C shape and is supported on the back side. The arm holder 3 contains an actuator, and the C arm 4 rotates about an axis passing through the arm holder 3 and the C arm 4 and parallel to the ceiling plane and the floor plane. Rails are disposed on the back surface of the C arm 4 in the direction in which the C arm 4 extends, and the C arm 4 passes through the arm holder 3 and is on the circumference with the arm extending direction of the C arm 4 as the circumference. Moving.

  An X-ray generator 5 is installed at one end of the C arm 4 and an X-ray flat panel detector 6 is installed at the other end. The X-ray generator 5 and the X-ray flat detector 6 are installed with their directions facing each other.

  The X-ray generator 5 has a vacuum tube that generates X-rays. A heating current is supplied to the filament (cathode) to emit electrons, and a high voltage is applied between the filament and the tungsten anode to accelerate the electrons and collide with the tungsten anode. X-rays are generated when the accelerated electrons collide with the tungsten anode. Application of high voltage is, for example, a high frequency inverter system, that is, rectifying a 50/60 Hz AC power supply to direct current, converting it to high frequency alternating current of several kHz or more, boosting it, and rectifying it again The method of applying is applied. The X-ray generation unit 5 determines the X-ray dose generated by the supplied current.

  The X-ray flat panel detector 6 includes multi-row multi-column X-ray detection elements. An X-ray detection element includes a pixel, an indirect conversion type in which X-rays are converted into light by a phosphor such as a scintillator, and the light is further converted into electric charge by a photoelectric conversion element such as a photodiode, or in an X-ray semiconductor. The direct conversion type utilizing the generation of electron-hole pairs and their transfer to the electrode, that is, photoconductive phenomenon, is the mainstream. In addition to the flat panel detector, for example, an image visualized on a fluorescent screen called an image intensifier may be taken with a camera.

  A top plate 7 on which the subject P is placed is interposed between the X-ray generator 5 and the X-ray flat detector 6. The top plate 7 is supported by a top plate holding part 8 fixed to the floor. The top plate holding portion 8 includes an actuator, and pushes the top plate 7 out of the top plate holding portion 8 or moves it back.

  The X-ray diagnostic apparatus 100 includes a support arm 2, a C arm 4, a top plate holding unit 8, a driving body such as an X-ray generation unit 5, and an X-ray flat panel detector 6 for medical means for diagnosis of a subject. Control as. The support arm 2, the C arm 4 and the top plate holding unit 8 are positioned, X-rays are emitted from the X-ray generation unit 5 with the set X-ray dose, and X-ray plane detection of X-rays transmitted through the subject P is performed. The detector 6 is used for detection. The positioning of the support arm 2, the C arm 4, the top plate holding unit 8, and the X-ray dose emitted from the X-ray generation unit 5 are controlled by a control system disposed inside the X-ray diagnostic apparatus 100.

  FIG. 2 shows a control system of the X-ray diagnostic apparatus 100. FIG. 2 is a block diagram showing a control system of the X-ray diagnostic apparatus 100.

  In the X-ray diagnostic apparatus 100, in addition to medical means, a computer including an input unit 40, a CPU 10, and a memory 11, a hardware control unit 20, and a medical means controller 30 are disposed.

  The medical means controller 30 is electrically connected to the computer and the hardware control unit 20. The computer and hardware control unit 20 is electrically connected to the input unit 40.

  The input unit 40 is a console in which buttons and knobs are arranged. For a computer, an electrical signal corresponding to the operation of a button or knob is encoded and input. An electrical signal having a voltage value or a current value corresponding to the operation amount of the button or knob is input to the hardware control unit 20 via a signal line corresponding to the button or knob.

  The computer executes various applications stored in the memory 11 and functions as control means of the X-ray diagnostic apparatus 100 by software. The hardware control unit 20 includes an electronic circuit, and functions as a device control unit using hardware.

  The medical means controller 30 supplies power to the actuators that drive the support arm 2, the C arm 4, and the top plate holding unit 8 in response to the control of the computer or the hardware control unit 20, or generates X-rays Power is supplied to the unit 5.

  The X-ray diagnostic apparatus 100 can be switched between software control and hardware control.

  In software control, a coded command is sent from the input unit 40 to the computer in accordance with the operation of the operator. The computer generates a control signal according to the command by executing the program and sends it to the medical means controller 30. The medical means controller 30 to which the control signal is input opens the circuit from the power source according to the control signal, and supplies the power to the support arm 2, the C arm 4, the top plate holding unit 8, or the X-ray generation unit 5 to move it. Then, the X-ray generation unit 5 is exposed to the set X-ray dose of X-rays.

  In the hardware control, an electrical signal having a current value corresponding to an operation is sent from the input unit 40 to the hardware control unit 20 via signal lines corresponding to various buttons and knobs. The hardware control unit 20 converts the sent electrical signal into a control signal and sends it to the medical means controller 30. The medical means controller 30 to which the control signal is input opens the circuit from the power source according to the control signal, and supplies the power to the support arm 2, the C arm 4, the top plate holding unit 8, or the X-ray generation unit 5 to move it. Then, the X-ray generation unit 5 is exposed to the set X-ray dose of X-rays.

  Software control by the computer is realized by executing an application for controlling the X-ray diagnostic apparatus 100. The memory 11 stores application files and data files such as an OS application 12a, a positioning application 14a, an X-ray dose setting application 15a, a patient registration DB 16, a temporary file 17, and a clinical application 18. The computer functions as the software control unit 13 by executing these applications.

  The software control unit 13 includes an operating system 12, a positioning control unit 14, and an X-ray setting control unit 15. Based on the operating system 12, a control signal for controlling the medical means is output to the medical means controller 30. The operating system 12 functions by executing the OS application 12a and provides basic functions commonly used by applications such as input / output devices such as the input unit 40 and the monitor M, and memory management. The positioning control unit 14 is realized by executing the positioning application 14a. The X-ray setting control unit 15 is realized by executing the X-ray dose setting application 15a.

  The positioning control unit 14 generates a control signal indicating the movement position of the driving body such as the support arm 2, the C arm 4, and the top plate holding unit 8 and sends it to the medical means controller 30.

  The X-ray dose setting control unit 15 generates a control signal indicating the X-ray dose and sends it to the medical means controller 30.

  Note that the positioning control unit 14 and the X-ray dose setting control unit 15 can be started or stopped separately as independent applications under the startup environment of the operating system 12.

  The hardware control unit 20 is hardware such as an electronic circuit that directly controls medical means, and includes a positioning circuit 21 and an X-ray dose setting circuit 22. The positioning circuit 21 converts the electrical signal sent from the input unit 40 into a control signal indicating the movement position of the support arm 2, the C arm 4, or the top plate holding unit 8, and sends it to the medical means controller 30. The X-ray dose setting circuit 22 converts the electrical signal sent from the input unit 40 into a control signal indicating the X-ray dose and sends it to the medical means controller 30.

  The memory 11 of the X-ray diagnostic apparatus 100 stores a virus countermeasure program (not shown) and a data file used for dealing with computer viruses. The computer virus is a program having functions of infection, latency, and disease, and includes so-called adware.

  By executing the virus countermeasure program, the computer of the X-ray diagnostic apparatus 100 functions as a search unit 51 that searches for a computer virus and a virus countermeasure unit 52 that deals with the virus when it is infected with a computer virus. . As the data file, a severity table 53, a countermeasure table 54, and various countermeasure files 55 are stored.

  The search unit 51 has a definition file for computer viruses, and searches for computer viruses from applications and data files stored in the memory 11. The definition file stores digital patterns of various computer viruses and information indicating the names and types of computer viruses. When the computer virus is searched, the severity is acquired from the information of the infected computer virus and the infected application or data file.

  The severity is obtained by referring to the severity table 53. FIG. 3 shows the severity table 53. As shown in FIG. 3, the severity table 53 associates severity with combinations of computer virus names and types and infected files. That is, the severity is based on the computer virus and its infected file. The severity is the difficulty of maintaining the function realized by the file when the computer virus infects the file, the difficulty of maintaining the operation of the medical system, and the spread of infection to other files in the medical system. Determined by sex, etc. The severity is classified into multiple levels such as high, medium and low.

  For example, when the X-ray dose setting application 15a that controls the X-ray dose is infected with a computer virus as a result of the search, the search unit 51 refers to the severity table 53 and acquires the severity “high”. If the clinical application 18 or the temporary file 17 is infected with a computer virus, the severity level “53” is acquired with reference to the severity level table 53. If the patient registration DB 16 is infected with a malicious computer virus, the severity “medium” is acquired. If the patient registration DB 16 is infected with a computer virus having relatively low maliciousness, the severity “low” is acquired. In the positioning application 14a, if the module that controls the positioning of the C-arm 4 is infected with a malicious computer virus, the severity “high” is acquired. In the positioning application 14a, if the module that controls the positioning of the C-arm 4 is infected with a computer virus with relatively low maliciousness, the C-arm 4 of the positioning application 14a that acquires the severity “low”. If a malicious computer virus is infected with the module that controls the positioning of the computer, the severity “high” is acquired.

  The virus handling unit 52 executes virus handling that matches the severity obtained by the search unit 51 and the information of the infected application or data file. The various countermeasure files 55 are batch files describing virus countermeasures. Various virus countermeasures are described for each countermeasure file 55. The virus handling unit 52 executes a handling file 55 that matches the severity and information of the infected application or data file.

  The countermeasure file 55 is acquired with reference to the countermeasure table 54. FIG. 4 shows the countermeasure table 54. As shown in FIG. 4, the countermeasure table 54 associates a countermeasure file 55 describing a virus countermeasure with a combination of an infected file and a severity level. That is, virus handling is based on computer viruses and their infected files via severity.

  The content of virus countermeasures described in the countermeasure file 55 differs depending on the severity and the infected file.

  For example, the virus countermeasure unit 52 that executes the countermeasure file 55 corresponding to the case where the infected file is the OS application 12a and the severity level “high” displays a message prompting the monitor M to reinstall the OS application 12a, and the operating system 12 End. In addition, the virus countermeasure unit 52 that executes the countermeasure file 55 corresponding to the case where the infected file is the OS application 12a and the severity “medium” continues the operation of the medical system, and the infected file in the OS application 12a at the time of restart delete. The virus countermeasure unit 52 that executes the countermeasure file 55 corresponding to the case where the infected file is the OS application 12a and the severity is “low” leaves the computer virus unattended.

  The virus countermeasure unit 52 executing the countermeasure file 55 corresponding to the case where the infected file is the X-ray dose setting application 15a and the severity “high” ends the software control route related to the X-ray dose setting, and performs hardware control by hardware control. Shift to control. That is, the operating system 12 and the software control unit 13 are stopped, the X-ray dose setting control unit 15 receives a command related to the X-ray dose sent from the input unit 40 via the operating system 12, and the X-dose setting control unit 15 performs control. The software control path for generating the signal and sending it to the medical means controller 30 is interrupted. Instead, the X-ray dose setting circuit 22 receives an X-ray dose-related electrical signal sent from the input unit 40, converts it into a control signal, and switches to a hardware control path that is sent to the medical means controller 30. In addition, the circuit setting of the X-ray dose setting circuit 22 is switched to the fluoroscopic mode. When a terminal existing on the network is designated, an alert is transmitted to the terminal.

  Further, the virus countermeasure unit 52 that executes the countermeasure file 55 corresponding to the case where the infected file is the X-ray dose setting application 15a and the severity “medium” continues the operation of the medical system, and the infection in the OS application 12a at the time of restart. Delete the file. The virus countermeasure unit 52 that executes the countermeasure file 55 corresponding to the case where the infected file is the X-ray dose setting application 15a and the severity is “medium” leaves the computer virus unattended.

  The virus handling unit 52 that executes the handling file 55 corresponding to the case where the infected file is a module related to the control of the C arm 4 in the positioning application 14a and the severity is “high”, and the path of software control related to the control of the C arm 4 To end the hardware control by hardware control. That is, the control module of the C arm 4 in the positioning control unit 14 is stopped, and the positioning control unit 14 receives a command related to the control of the C arm 4 sent from the input unit 40 via the operating system 12, and the positioning control unit 14 14 interrupts the software control path for generating the control signal and sending it to the medical means controller 30. Alternatively, the positioning circuit 21 receives an electrical signal related to the control of the C arm 4 sent from the input unit 40, converts the electrical signal into a control signal, and switches to a hardware control path for sending to the medical means controller 30. Alternatively, the control itself of the C arm 4 is stopped, and the positioning of the C arm 4 can be performed manually.

  Further, the virus handling unit 52 that executes the countermeasure file 55 corresponding to the case where the infected file is a module related to the control of the C-arm 4 in the positioning application 14a and the severity is “medium” continues the operation of the medical system, At startup, the infected file in the OS application 12a is deleted. The virus handling unit 52 that executes the handling file 55 corresponding to the case where the infected file is a module related to the control of the C-arm 4 in the positioning application 14a and the severity is “medium” leaves the computer virus unattended.

  The virus countermeasure unit 52 that executes the countermeasure file 55 corresponding to the case where the infected file is the patient information DB 16 and the severity level “high” sends an alert to the terminal when a terminal existing on the network is designated. Then, the reception of a command using the patient information DB 16 sent from the input unit 40 is prohibited. Further, the virus handling unit 52 that executes the handling file 55 corresponding to the case where the infected file is the patient information DB 16 and the severity “medium” deletes the infected file in the patient information DB 16. The virus handling unit 52 that executes the handling file 55 corresponding to the case where the infected file is the patient information DB 16 and the severity is “low” leaves the computer virus unattended.

  The virus countermeasure unit 52 that executes the countermeasure file 55 corresponding to the case where the infected file is the clinical application 18 and the severity “high” displays a message prompting the monitor M to reinstall the clinical application 18, and terminates the clinical application 18. To prohibit acceptance of the start command again. Further, the virus handling unit 52 that executes the handling file 55 corresponding to the case where the infected file is the clinical application 18 and the severity “medium” deletes the infected file in the clinical application 18. The virus countermeasure unit 52 that executes the countermeasure file 55 corresponding to the case where the infected file is the clinical application 18 and the severity is “low” leaves the computer virus.

  FIG. 5 shows the virus search and virus handling operations of the X-ray diagnostic apparatus 100. FIG. 5 is an activity diagram relating to virus detection and virus handling in the medical system.

  First, when the operator makes an input requesting the start of virus detection using the input unit 40 (S01), the CPU 10 starts a virus countermeasure program (S02). The virus countermeasure program may be activated by setting a scheduled time and starting a timer.

  When the virus countermeasure program is activated, the CPU 10 functions as the search unit 51. The search unit 51 searches for a computer virus by scanning a file in the X-ray diagnostic apparatus 100 according to a definition file in which a computer virus pattern and a computer virus name or type are described (S03). This definition file and search engine may be commercially available.

  If no computer virus is detected by scanning a file within a specified range in the X-ray diagnostic apparatus 100 (S04), the search unit 51 ends the search process. If a computer virus is detected from the file being scanned (S05), the name of the infected file is acquired, and the name or type of the computer virus is acquired from the module describing the name or type of the computer virus in the definition file (S06). ).

  When acquiring the name of the infected file and the name or type of the computer virus, the search unit 51 reads the severity table 53 and acquires the severity corresponding to the acquired combination of the infected file and the computer virus (S07).

  When the severity is acquired, the CPU 1 functions as the virus countermeasure unit 52. The virus handling unit 51 reads the handling table 54 and specifies the corresponding file 55 associated with the combination of the acquired severity and the name of the infected file (S08). When the corresponding file 55 is specified, the corresponding file 55 is read and execution is started (S09).

  For example, it is assumed that the severity “high” is acquired because a malicious computer virus has infected a file in the X-ray dose setting application 15a. The virus handling unit 52 reads “Batchfile01 — 02.bat” and starts executing it.

  When the virus countermeasure unit 52 executes a virus countermeasure due to a malicious computer virus infecting a file in the X-ray dose setting application 15a, the virus controller unit terminates the software control unit 13 and blocks the software control path. The control path is switched so that the electric signal from the input unit 40 is sent to 20 and the hardware control is performed (S10). Further, the operating system 12 is terminated (S11).

  As a result, the virus-infected application is not started, the spread of the virus infection can be prevented, and damage caused by the virus infection can be minimized.

  FIG. 6 shows another configuration example of the medical system. FIG. 6 is a block diagram showing another configuration of the medical system.

  The medical system can include a storage device 110 via a network in addition to the modality such as the X-ray diagnostic apparatus 100. The storage device 110 stores a severity table 53 and a countermeasure table 54. When the retrieval unit 51 obtains the severity level, the severity level table 53 is read via the network, or the storage device 110 is inquired about the severity level from the computer virus and the infected file. When the countermeasure file 55 is specified by the virus countermeasure unit 52, the countermeasure table 54 is read via the network or the countermeasure file 55 is inquired from the storage device 110 based on the name and severity of the infected file.

  In the above embodiment, the severity is obtained from the computer virus and the infected file. However, when the severity is derived only from the contents of the computer virus and the infected file, the severity is assigned to the severity. The countermeasure file 55 may be specified directly from the computer virus and the infected file without intervention. In this case, a countermeasure file 54 may be prepared by combining the severity table 53 and the countermeasure table 54 via overlapping severity and infected files.

  As described above, the medical system according to the present invention stores a severity table that defines the severity of the system for each computer virus and a countermeasure table that defines a virus countermeasure corresponding to the severity, and the computer virus is stored from the stored file. Was searched and virus countermeasures were taken based on the severity table and the response table. As a result, it is possible to take measures specifically for the medical system, and the medical system can be operated safely and stably.

  In addition, a countermeasure table that defines virus countermeasures corresponding to the infected file and severity, that is, a combination of an infected computer virus and an infected file, is stored, and a countermeasure is taken based on the countermeasure table. Thereby, the evaluation for the combination of the computer virus and the infected file is optimized according to the medical system, and safer and more stable operation is possible.

It is a perspective view which shows the external appearance of the medical system which concerns on this embodiment. It is a block diagram which shows the control system of a medical system. It is a figure which shows the seriousness degree table with which a medical system is provided. It is a figure which shows the countermeasure table with which a medical system is provided. FIG. 10 is an activity diagram related to virus detection and virus handling in the medical system. It is a block diagram which shows the other structure of a medical system.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 X-ray diagnostic apparatus 110 Memory | storage device 1 Ceiling mounting part 2 Support arm 3 Arm holder 4 C arm 5 X-ray generation part 6 X-ray plane detector 7 Top plate 8 Top plate holding part 10 CPU
DESCRIPTION OF SYMBOLS 11 Memory 12 Operating system 12a OS application 13 Software control part 14 Positioning control part 14a Positioning application 15 X dose setting control part 15a X dose setting application 16 Patient registration DB
17 Temporary File 18 Clinical Application 20 Hardware Control Unit 21 Positioning Circuit 22 X Dose Setting Circuit 30 Medical Means Controller 40 Input Unit 51 Search Unit 52 Virus Countermeasure Unit 53 Severity Level Table 54 Response Table 55 Response File M Monitor

Claims (7)

Medical means for diagnosing or treating a subject;
Various software control means for controlling the medical means;
Various hardware control means arranged to be able to replace at least a part of the various software control means and control the medical means;
Storage means for storing various files including application files for realizing the various software control means;
Search means for searching for a computer virus from the file stored in the storage means;
A severity table that stores the severity definitions for the system for each computer virus;
A countermeasure table storing virus countermeasures corresponding to the severity;
Coping means for coping with viruses based on the severity table and the coping table;
Providing
A medical system characterized by. Medical means for diagnosing or treating a subject;
Various software control means for controlling the medical means;
Various hardware control means arranged to be able to replace at least a part of the various software control means and control the medical means;
Storage means for storing various files including application files for realizing the various software control means;
Search means for searching for computer viruses from various files stored in the storage means, and identifying infected computer viruses and infected files;
A handling table storing virus handling corresponding to the combination of the infected computer virus and the infected file;
Coping means for coping with viruses based on the coping table;
Providing
A medical system characterized by. The virus countermeasure includes at least switching to control by hardware control means that replaces control by software control means corresponding to an infected application file, switching to manual control, system stop, or system restart. ,
The medical system according to claim 1 or 2. The medical system according to claim 1 comprises:
A medical device including the medical means, the various software control means, the various hardware control means, the storage unit, the search means, and the coping means;
A storage device connected to the medical device via a network and storing the severity table and the countermeasure table;
Providing
The medical system according to claim 1 or 2. Medical means for diagnosing or treating a subject;
Various software control means for controlling the medical means;
Various hardware control means arranged to be able to replace at least a part of the various software control means and control the medical means;
File storage means for storing various files including application files for realizing the various software control means;
A medical system for diagnosing or treating a subject,
Search means for searching for computer viruses from various files stored in the storage unit;
Table storage means for storing a severity table that defines the severity of the system for each computer virus, and a countermeasure table that defines virus countermeasures corresponding to the severity;
Coping means for coping with viruses based on the severity table and the coping table;
Make it work,
Medical virus countermeasure program characterized by Medical means for diagnosing or treating a subject;
Various software control means for controlling the medical means;
Various hardware control means arranged to be able to replace at least a part of the various software control means and control the medical means;
File storage means for storing various files including application files for realizing the various software control means;
A medical system for diagnosing or treating a subject,
Search means for searching for computer viruses from various files stored in the storage unit;
Search means for searching for computer viruses from various files stored in the storage means, and identifying infected computer viruses and infected files;
Storage means for storing a countermeasure table defining a virus countermeasure corresponding to a combination of the infected computer virus and the infected file;
Coping means for coping with viruses based on the coping table;
Make it work,
Medical virus countermeasure program characterized by The virus countermeasure includes at least switching to control by hardware control means that replaces control by software control means corresponding to an infected application file, switching to manual control, system stop, or system restart. ,
The medical virus countermeasure program according to claim 5 or 6.

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