JP5288711B2 - Medical imaging device - Google Patents

Description

  The present invention relates to a medical image photographing apparatus for photographing a medical image.

  Along with the development of medical image capturing apparatuses, there are increasing opportunities for doctors to perform examinations and operations using images showing the affected area of a patient. Examples of the medical imaging apparatus include an X-ray tomography apparatus (CT), an X-ray fluoroscopic apparatus, a magnetic resonance imaging apparatus (MRI), and an ultrasonic diagnostic apparatus (see, for example, Patent Document 1).

In such a medical image capturing apparatus, as in the case of a general apparatus, a system down that causes the system to stop operating occurs. In general, as a system recovery means, a storage medium has a RAID configuration, or a plurality of the same medical imaging devices are prepared. The system down occurs due to hardware damage or software malfunction.
JP-A-11-285494

  However, even if the system recovery means as described above is used, the system operation cannot be continued if the system goes down due to a logical failure of the storage medium. In addition, preparing a plurality of the same medical image photographing devices increases the cost.

  The present invention has been made in view of the above, and provides a medical image photographing apparatus capable of continuing system operation while suppressing costs even when a system failure occurs due to a logical failure of a storage medium. It is.

According to an embodiment of the present invention, in the medical imaging apparatus, a first storage medium that stores first software, a second storage medium that stores second software that is the same as the first software, and a first storage medium Means for detecting a logical failure of the first storage medium, means for activating the stored second software when a logical failure of the first storage medium is detected, and hardware for performing image generation processing for processing the received signal to generate an image It includes a ware, and means for detecting a physical hardware failure, either hand of the first storage medium and the second storage medium stores a software for emulating corresponding to the image generating process performed by the hardware a storage medium both of which the first storage medium and the second storage medium is a storage medium for storing the image data of the first storage medium, respectively, physical late hardware When detecting, perform either one in the software for the stored emulation of the first storage medium and the second storage medium, and means for implementing an image generation process in place of the hardware, the first storage medium When a logical failure is detected, according to the means for recovering the logical failure of the first storage medium based on the image data of the first storage medium stored in the second storage medium and the replacement of the first storage medium, The first software stored in the replaced first storage medium is overwritten on the second storage medium as the second software, and the image data of the first storage medium stored in the replaced first storage medium is overwritten on the second storage medium. And a means for performing.

  According to the present invention, it is possible to avoid a system down even when a logical failure of a storage medium occurs while suppressing costs.

  An embodiment of the present invention will be described with reference to the drawings. In the embodiment of the present invention, an ultrasonic diagnostic apparatus will be described as an example of a medical image photographing apparatus.

  As shown in FIG. 1, an ultrasound diagnostic apparatus 1 includes an ultrasound probe 2 that transmits and receives ultrasound to and from a subject such as a patient, transmission of drive signals to the ultrasound probe 2, and ultrasound probe 2. A transmission / reception unit 3 that receives the reflected signal, an image generation unit 4 that generates an image of the examination target region of the subject based on the received reflection signal, a display unit 5 that displays the generated image, a doctor, etc. An input unit 6 that receives an input operation from an operator, a control unit 7 that controls each unit, and a first storage medium 8 and a second storage medium 9 that store various programs and data are provided.

  The ultrasonic probe 2 includes a plurality of ultrasonic transducers each formed of a material such as a piezoelectric element. The ultrasonic transducers transmit ultrasonic waves to the subject using the ultrasonic transducers, It is a device that receives reflected waves as echo signals. The ultrasonic probe 2 is applied to the surface of the subject by an operator such as a doctor, and in this state, transmits ultrasonic waves and receives reflected waves.

  The transmission / reception unit 3 generates an electric pulse signal (excitation signal) to be applied to each ultrasonic transducer of the ultrasonic probe 2 as a drive signal, and transmits the drive signal to the ultrasonic probe 2. Further, the transmission / reception unit 3 receives an echo signal transmitted from the ultrasonic probe 2.

  The image generation unit 4 processes the received echo signal and generates image data such as B-mode image data and color Doppler image data. The image generation unit 4 is configured by hardware (electronic circuit), for example, and is mounted on a substrate or the like.

  The display unit 5 is a display device that displays an image, and in particular, a display device that displays an image based on the generated image data. For example, a liquid crystal display or a CRT (Cathode Ray Tube) display is used as the display unit 5.

  The input unit 6 is an input unit that is input by an operator, and in particular, is an input unit that receives various input operations such as start-up of an apparatus and start of image display. As the input unit 6, for example, a dedicated operation panel, an input device such as a keyboard and a mouse is used.

  The control unit 7 includes a CPU (Central Processing Unit) that centrally controls each unit, a non-volatile memory that stores a BIOS (Bios), and a RAM (Random Access Memory) that functions as a work area of the CPU. As the nonvolatile memory, for example, a ROM (Read Only Memory), a flash memory, or the like is used.

  The control unit 7 usually reads and executes a boot program called a boot loader based on the BIOS, and boots an operating system (OS), that is, basic software stored in the first storage medium 8. Thereafter, the control unit 7 controls each unit based on various programs, data, and the like stored in the first storage medium 8. In particular, the control unit 7 executes a series of data processing for calculating or processing data and an image display processing for displaying an image.

  The first storage medium 8 is a main storage medium that stores various programs, data, and the like. In particular, as shown in FIG. 2, the first storage medium 8 is a storage medium that stores system data and image data of the first storage medium 8. . As the first storage medium 8, for example, a magnetic disk device such as a hard disk drive and a semiconductor disk device such as a flash memory are used.

  The second storage medium 9 is an auxiliary storage medium that stores various programs, data, and the like. In particular, as shown in FIG. 2, the storage stores system data, image data of the first storage medium 8, and user data. It is a medium. As the second storage medium 9, as with the first storage medium 8, for example, a magnetic disk device such as a hard disk drive and a semiconductor disk device such as a flash memory are used.

  Here, the system data includes an operating system (OS) that is basic software, ultrasound software for imaging related to ultrasound diagnosis, factory setting data of the ultrasound diagnostic apparatus 1, and the like. The image data of the first storage medium 8 is an image file in which the content (image) of the first storage medium 8 is directly converted into a file. This image data functions as recovery information.

  The user data is various data such as image data and setting data created by a user such as a doctor. For example, image data is stored in the second storage medium 9 as user data when an input operation for saving is performed on the input unit 6 by a user who is an operator, for example, when it is necessary to save an image being displayed. Saved. Similarly, the setting data is also stored as user data in the second storage medium 9 when a setting input operation is performed on the input unit 6 by the user.

  Next, the processing operation of such an ultrasonic diagnostic apparatus 1 will be described. First, when the operating system stored in the first storage medium 8 (hereinafter referred to as the operating system of the first storage medium 8) cannot be started, the operating system stored in the second storage medium 9 (hereinafter referred to as the operating system) A system activation process for activating the operating system of the second storage medium 9 will be described.

  As shown in FIG. 3, the control unit 7 first determines whether or not the normal flag of the first storage medium 8 is 1 (step S1). If it is determined that the normal flag of the first storage medium 8 is 1 (YES in step S1), the normal flag of the first storage medium 8 is set to 0 (step S2), and the first storage medium 8 recognizes it. It is determined whether or not it has been done (step S3).

  If it is determined that the first storage medium 8 has been recognized (YES in step S3), the system of the first storage medium 8, that is, the operating system of the first storage medium 8 is activated (step S4). Thereafter, it is determined whether or not the system has been normally activated (step S5). If it is determined that the system has been normally activated (YES in step S5), the normal flag of the first storage medium 8 is set to 1 (step S6), and the process ends. Here, when the system is not normally activated (NO in step S5), the ultrasonic diagnostic apparatus 1 is in a stopped state such as freezing, that is, a system down state. In response to this, the user performs an input operation for restarting the ultrasonic diagnostic apparatus 1 on the input unit 6.

  On the other hand, when it is determined that the normal flag of the first storage medium 8 is not 1 (NO in step S1) or when it is determined that the first storage medium 8 is not recognized (NO in step S3), the second storage medium It is determined whether 9 is recognized (step S7).

  If it is determined that the second storage medium 9 has been recognized (YES in step S7), the system of the second storage medium 9, that is, the operating system of the second storage medium 9 is activated (step S8). Thereafter, it is determined whether or not the system has been normally activated (step S9). If it is determined that the system has been normally activated (YES in step S9), the user is notified of an abnormality in the first storage medium 8 (step S10). At this time, the control unit 7 causes the display unit 5 to display a notification screen for notifying the occurrence of abnormality, for example. In addition, the control unit 7 holds information related to an abnormality in the first storage medium 8, for example, log information, in the second storage medium 9. This information is used to analyze the cause of the abnormality.

  Next, it is determined whether or not the user has selected recovery (step S11). At this time, if the user wishes to recover the abnormality, the input operation for instructing the input unit 6 to recover the first storage medium 8 is performed. If it is determined that the user has selected recovery (YES in step S11), the first storage medium 8 is recovered (step S12), the normal flag of the first storage medium 8 is set to 1 (step S13), End the process. At this time, the control unit 7 restores the first storage medium 8 based on the image data of the first storage medium 8 stored in the second storage medium 9. On the other hand, if it is determined that the user has not selected recovery (NO in step S11), the system operation by the operating system of the second storage medium 9 is continued (step S14), and the process is terminated.

  Here, when the second storage medium 9 is not recognized (NO in step S7) or when the system is not normally activated (NO in step S9), the ultrasonic diagnostic apparatus 1 is stopped such as freeze. That is, the system goes down. In response to this, the user performs an input operation for restarting the ultrasonic diagnostic apparatus 1 on the input unit 6.

  As described above, when the logical failure of the first storage medium 8 is detected and the logical failure is detected, the operating system of the second storage medium 9 is started, thereby causing the logical failure of the first storage medium 8. Even when a system down occurs, the ultrasonic diagnostic apparatus 1 operates using the operating system of the second storage medium 9, and thus the system operation can be continued.

  Here, as a detection means for detecting a logical failure of the first storage medium 8, for example, a normal flag is used. The normal flag of the first storage medium 8 is reset (set to 0) before starting the system and set (set to 1) after starting the system. Therefore, when a logical failure of the first storage medium 8 occurs and the system startup is not completed, the normal flag is reset. Thereby, when the normal flag is reset at the next system startup, it is detected that a logical failure of the first storage medium 8 has occurred. The logical failure is a logical failure related to software such as data inconsistency or data abnormality, and the physical failure is a physical failure related to hardware such as a hard disk drive.

  In addition, when the occurrence of a logical failure of the first storage medium 8 is detected, the system activation by the second storage medium 9 is executed. Thereafter, when the system startup is completed, the occurrence of an abnormality in the first storage medium 8 is notified. When the user desires to restore the first storage medium 8, the contents of the first storage medium 8 are restored based on the image data of the first storage medium 8 stored in the second storage medium 9. In this way, the first storage medium 8 in a logical failure is automatically restored according to the user's request, so that the reliability of the apparatus can be improved.

  Next, although the operating system of the first storage medium 8 could be started, the ultrasonic software stored in the first storage medium 8 (hereinafter referred to as the ultrasonic software of the first storage medium 8) is started. An ultrasonic software activation process for activating the ultrasonic software stored in the second storage medium 9 (hereinafter referred to as the ultrasonic software of the second storage medium 9) when it cannot be performed will be described.

  As shown in FIG. 4, the control unit 7 activates the ultrasonic software of the first storage medium 8 (step S21), and determines whether the ultrasonic software of the first storage medium 8 has been activated normally (step S21). Step S22).

  When it is determined that the ultrasonic software of the first storage medium 8 has been normally activated (YES in step S22), the system operation by the operating system and ultrasonic software of the first storage medium 8 is continued (step S23), The process ends. On the other hand, when it is determined that the ultrasonic software of the first storage medium 8 is not normally activated (NO in step S22), the ultrasonic software of the second storage medium 9 is activated (step S24), and the second It is determined whether or not the ultrasonic software of the storage medium 9 has been normally activated (step S25).

  Thereafter, when it is determined that the ultrasonic software of the second storage medium 9 has been normally activated (YES in step S25), the abnormality of the first storage medium 8 is notified to the user (step S26). At this time, the control unit 7 causes the display unit 5 to display a notification screen for notifying the occurrence of abnormality, for example. In addition, the control unit 7 holds information related to the abnormality of the first storage medium 8, for example, log information of abnormal software, in the second storage medium 9. This information is used to analyze the cause of the abnormality.

  Next, it is determined whether or not the user has selected recovery (step S27). At this time, if the user wishes to recover the abnormality, the input operation for instructing the input unit 6 to recover the first storage medium 8 is performed. If it is determined that the user has selected recovery (YES in step S27), the first storage medium 8 is recovered (step S28), and the process ends. At this time, the control unit 7 restores the first storage medium 8 based on the image data of the first storage medium 8 stored in the second storage medium 9. On the other hand, if it is determined that the user has not selected recovery (NO in step S27), the system operation by the operating system and ultrasonic software of the second storage medium 9 is continued (step S29), and the process is terminated. .

  In this way, the ultrasonic software of the first storage medium 8 is activated, and the ultrasonic software is normally activated by detecting a logical failure of the first storage medium 8 according to the success or failure of the activation of the ultrasonic software. If not, it is determined that a logical failure of the first storage medium 8 has occurred, so that the logical failure of the first storage medium 8 can be detected easily and accurately.

  Even when the factory setting data of the first storage medium 8 is broken and cannot be read when the system is started or when the ultrasonic software is started, the control unit 7 sets the factory setting of the second storage medium 9. Read and use data. Thereby, even if the factory default setting data of the first storage medium 8 is broken, the ultrasonic diagnostic apparatus 1 operates using the factory default setting data of the second storage medium 9. A stop state can be avoided.

  In addition, when the first storage medium 8 is replaced due to a failure of the first storage medium 8 or software upgrade, the control unit 7 stores the system data stored in the replaced first storage medium 8 and The image data is overwritten on the second storage medium 9. As a result, the contents are stored in the second storage medium 9 in accordance with the exchange of the first storage medium 8, so that the user does not need to perform an input operation for updating on the input unit 6, and convenience is increased. Furthermore, since only the work for exchanging the first storage medium 8 has to be performed, the working time can be shortened.

  Next, when hardware such as the image generation unit 4 breaks down, software stored in the first storage medium 8 or the second storage medium 9 (hereinafter referred to as software of the first storage medium 8 or the second storage medium). The emulation process for emulating hardware will be described. In particular, a failure of a board on which the image generation unit 4 is mounted may occur.

  As shown in FIG. 5, the control unit 7 initializes hardware in response to system startup (step S <b> 31). It is determined whether or not an error has been detected during hardware initialization (step S32). At this time, errors such as a write error and a response error are automatically detected.

  If it is determined that an error has been detected (YES in step S32), the hardware of the first storage medium 8 or the second storage medium 9 is emulated (imitation) (step S33), and the process ends. . At this time, in one or both of the first storage medium 8 and the second storage medium 9, a plurality of software is stored in advance corresponding to each hardware. For example, image generation processing software is stored in association with the image generation unit 4. As the emulation process, for example, a scan conversion process or the like is used. On the other hand, if it is determined that no error has been detected (NO in step S32), the process is terminated as it is.

  As described above, when one or both of the first storage medium 8 and the second storage medium 9 store software for performing processing instead of hardware and detect a physical failure of the hardware, Since the hardware is emulated based on the software of the first storage medium 8 or the second storage medium 9, even if a physical failure of the hardware occurs, the processing performed by the hardware is performed by the software. Down can be avoided.

  As described above, according to the embodiment of the present invention, when a logical failure of the first storage medium 8 is detected and the logical failure is detected, software (for example, an operating system) of the second storage medium 9 is detected. Even if a system failure occurs due to a logical failure of the first storage medium 8 by activating the software, the ultrasonic diagnostic apparatus 1 operates using the software of the second storage medium 9. System operation can be continued. Furthermore, the second storage medium 9 may be provided in addition to the first storage medium 8, and it is not necessary to prepare a plurality of devices, so that the cost can be suppressed.

  In addition, information indicating whether or not the first storage medium 8 is logically normal is acquired and held in accordance with the success or failure of the software (for example, operating system) of the first storage medium 8. When the software of the first storage medium 8 is activated, the logical failure of the first storage medium 8 is detected based on the stored information, and therefore the software of the first storage medium 8 is not activated normally. Information indicating that the first storage medium 8 is not logically normal is held, and a logical failure of the first storage medium 8 is detected based on the information at the next start-up, so the first storage medium can be easily and accurately A logical failure of the storage medium 8 can be detected.

  In addition, if the software is not normally activated by detecting a logical failure of the first storage medium 8 according to the success or failure of activation of the software (for example, ultrasonic software) of the first storage medium 8, Since it is determined that a logical failure of one storage medium 8 has occurred, a logical failure of the first storage medium 8 can be detected easily and accurately.

  Furthermore, the second storage medium 9 is a storage medium for storing recovery information (for example, image data of the first storage medium 8) for recovering the first storage medium 8, and a logical failure of the first storage medium 8 Since the logical failure of the first storage medium 8 is recovered based on the stored recovery information, the first storage medium 8 in the logical failure is automatically recovered. Can be improved.

  In addition, when a logical failure of the first storage medium 8 is detected, information regarding the logical failure of the first storage medium 8 is retained, and this information is used to analyze the cause of the occurrence of an abnormality later. Therefore, the ultrasonic diagnostic apparatus 1 can be treated to avoid the occurrence of an abnormality, and the analysis information can be used for maintenance and development of the ultrasonic diagnostic apparatus 1.

  Further, since the software stored in the replaced first storage medium 8 is overwritten on the second storage medium 9 in accordance with the replacement of the first storage medium 8, such as failure of the first storage medium 8 or software upgrade Therefore, when the first storage medium 8 is replaced, the contents are stored in the second storage medium 9, so that the user does not need to perform an input operation for update on the input unit 6 and the convenience is improved. In addition, it is only necessary to replace the first storage medium 8, so that the work time can be shortened.

  Furthermore, one or both of the first storage medium 8 and the second storage medium 9 is a storage medium that stores software for performing processing instead of hardware, and detects a physical failure of the hardware, When a physical failure of the hardware is detected, the hardware is emulated based on the software of the first storage medium 8 or the second storage medium 9. Therefore, even if a physical failure of the hardware occurs, the hardware Since the processing performed by the software is performed by software, system down can be avoided.

(Other embodiments)
The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention.

  For example, in the above-described embodiment, only one second storage medium 9 is provided as an auxiliary storage medium. However, the present invention is not limited to this. For example, two or more second storage media 9 may be provided. In this case, priorities are assigned to two or more auxiliary storage media, and the software is sequentially activated from the software of the auxiliary storage media having a higher priority. Note that the reliability of the apparatus can be improved by increasing the number of auxiliary storage media in this way.

1 is a block diagram showing a schematic configuration of an ultrasonic diagnostic apparatus according to an embodiment of the present invention. It is a schematic diagram which shows typically the 1st storage medium with which the ultrasonic diagnosing device shown in FIG. 1 is equipped, and a 2nd storage medium. It is a flowchart which shows the flow of the system starting process which the ultrasound diagnosing device shown in FIG. 1 performs. It is a flowchart which shows the flow of the ultrasonic software starting process which the ultrasonic diagnostic apparatus shown in FIG. 1 performs. It is a flowchart which shows the flow of the emulation process which the ultrasonic diagnostic apparatus shown in FIG. 1 performs.

Explanation of symbols

1 Medical imaging device (ultrasound diagnostic device)
4 hardware (image generator)
8 First storage medium 9 Second storage medium

Claims (6)

A first storage medium for storing first software;
A second storage medium for storing the same second software as the first software;
Means for detecting a logical failure of the first storage medium;
Means for activating the stored second software when a logical failure of the first storage medium is detected;
Hardware that performs image generation processing to generate an image by processing a received signal;
Means for detecting a physical failure of the hardware;
With
A storage medium for storing the first storage medium and the software for emulating corresponding to either hand image generation processing performed by the pre-Symbol hardware of the second storage medium, which first storage medium and the second Both storage media are storage media for storing image data of the first storage media,
When a physical failure of the hardware is detected, the emulation software stored in one of the first storage medium and the second storage medium is executed, and the image generation is performed instead of the hardware. Means for realizing the processing ;
Means for recovering a logical failure of the first storage medium based on image data of the first storage medium stored in the second storage medium when a logical failure of the first storage medium is detected;
In response to the replacement of the first storage medium, the first software stored in the replaced first storage medium is overwritten on the second storage medium as the second software and stored in the replaced first storage medium. Means for overwriting the second storage medium with the image data of the first storage medium,
A medical image photographing apparatus further comprising:   The detecting means acquires and holds information indicating whether or not the first storage medium is logically normal in accordance with success or failure of activation of the first software. The medical image photographing apparatus according to claim 1, wherein when starting, a logical failure of the first storage medium is detected based on the held information.   The medical image photographing apparatus according to claim 1, wherein the detecting unit detects a logical failure of the first storage medium according to success or failure of activation of the first software. 4. The medical image photographing apparatus according to claim 1, further comprising means for holding information relating to a logical failure of the first storage medium when a logical failure of the first storage medium is detected . 5. The medical image photographing apparatus according to claim 1, wherein the means for detecting a physical failure of the hardware detects an error of the hardware in response to system activation . A plurality of the second storage media are provided,
The plurality of second storage media have a priority order;
6. The medical image photographing apparatus according to claim 1 , wherein the second software activation unit sequentially activates the second software of the second storage medium having a high priority .

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