JP2009077959A - Ultrasonic image diagnostic device and its control program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To increase the speed to start a system by using an external storage device. <P>SOLUTION: A storage device management part 9a manages whether or not storage devices 11 and 12 are newly connected. A data reproduction part 9b receives a notification of connection detection from the storage device management part 9a, reads ultrasonic software 9d stored in the storage part 9, and reproduces it to storage devices 11 and 12 where the connections are detected. A data distribution read/write part 9c performs distribution read/write of ultrasonic software 9d stored in the storage part 9, ultrasonic software 11c stored in the storage device 11, and ultrasonic software 12c stored in the storage device 12. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an ultrasonic diagnostic imaging apparatus and a control program thereof, and more particularly to an ultrasonic diagnostic imaging apparatus and a control program thereof capable of speeding up system startup using an external storage device.

  In recent years, with the advancement of computer technology, its performance has improved dramatically. A general computer includes a main storage device that stores a program, data necessary for the program processing, and a CPU (Central Processing Unit) that performs arithmetic processing based on the program and data.

  The processing capability required of a computer is that the CPU accesses and operates programs and data stored in the main storage device, so the access speed to the main storage device (for example, HDD (Hard Disc Drive)) is high. A big influence. That is, if the access speed to the disk is relatively slow compared to the CPU computing capacity, the waiting time until the program and data are read out becomes long, resulting in a decrease in computer processing capacity.

  Therefore, among the technologies called Raid (Redundant Arrays of Inexpensive Disks) that collectively manage multiple external hard disks as a single hard disk, the technology called striping defined by Raid0 uses two pieces of data. The disk access speed can be improved by distributing and writing to the above external hard disk.

By the way, in an X-ray diagnostic apparatus, a CT (Computed Topography) apparatus, an ultrasonic diagnostic apparatus, a magnetic resonance diagnostic apparatus, and a medical diagnostic apparatus such as a gamma camera or PET (Positron-Emission Topography). However, it is required to start the apparatus stably. Therefore, for example, Patent Document 1 proposes a technique for effectively preventing an initialization file mounted on an ultrasonic diagnostic imaging apparatus from becoming unreadable.
JP 2002-360568 A

  When Raid that distributes data to multiple hard disks is configured, the hardware becomes complicated and the cost increases. For this reason, it is possible to use a plurality of hard disks in the computer without configuring Raid, but the cost is still unavoidable. Further, when a hard disk is added to realize higher speed, it takes time and is troublesome.

  The present invention has been made in view of such a situation, and it is possible to replicate data in a main storage device to a removable storage device and to read / write data in a distributed manner according to the situation of each storage device. To provide a sound image diagnostic apparatus and a control program thereof.

  A first feature according to an embodiment of the present invention is that an acquisition unit that acquires a reception signal obtained by scanning a subject with ultrasonic waves, and an ultrasonic image is generated based on the reception signal acquired by the acquisition unit In an ultrasonic diagnostic imaging apparatus having a generating means for displaying and a display means for displaying an ultrasonic image generated by the generating means, a storage device managing means for managing the connection status of external storage devices and changes thereof, and a storage device When the management means recognizes that a new storage device has been connected, the replication means for copying data from the already connected storage device to the newly connected storage device, and the attributes of the connected storage device And distributed read / write means for reading and writing data in a distributed manner.

  The second feature according to the embodiment of the present invention is that an acquisition means for acquiring a reception signal obtained by scanning a subject with ultrasonic waves, and an ultrasonic image is generated based on the reception signal acquired by the acquisition means. A control program that is executed in an ultrasound diagnostic imaging apparatus having a generating unit that performs and a display unit that displays an ultrasound image generated by the generating unit, and manages a connection status of an external storage device and changes thereof A storage device management step, and when the storage device management step recognizes that a storage device is newly connected, a replication step of replicating data from the already connected storage device to the newly connected storage device; A distributed read / write step of reading and writing data in a distributed manner based on the attributes of the connected storage device.

  According to the present invention, it is possible to speed up the startup of the system at a low cost.

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

  FIG. 1 is a diagram illustrating a configuration example of an ultrasound diagnostic imaging apparatus 1 to which the present invention is applied.

  The ultrasonic probe 2 is for transmitting and receiving ultrasonic waves by bringing its tip surface into contact with the body surface of a subject, and has a plurality of piezoelectric vibrators, which are two-dimensionally arranged. Yes. The transmission / reception unit 3 generates an ultrasonic drive signal for generating a transmission ultrasonic wave from the ultrasonic probe 2 and transmits the ultrasonic drive signal to the ultrasonic probe 2 or a multi-channel ultrasonic wave obtained from a piezoelectric vibrator of the ultrasonic probe 2. Perform phasing addition on the sound wave reception signal and output to the signal processing unit 4.

  The signal processing unit 4 includes a B-mode processing unit, a Doppler processing unit, and a color mode processing unit, and the data output from the transmission / reception unit 3 is subjected to predetermined processing in any of the processing units. The B-mode processing unit visualizes echo amplitude information and generates B-mode ultrasound raster data from the echo signal. The Doppler processing unit extracts the Doppler shift frequency component and further performs FFT (Fast Fourier Transform) processing and the like to generate data having blood flow information. The color mode processing unit visualizes the moving blood flow information and generates color ultrasonic raster data.

  A DSC (Digital Scan Converter) 5 converts ultrasonic raster data into data represented by orthogonal coordinates (scan conversion processing) in order to obtain an image represented by an orthogonal coordinate system. For example, when scan conversion processing is performed on the data output from the B-mode processing unit, tomographic image data representing the tissue shape of the subject as two-dimensional information is generated.

  The image generation unit 6 generates voxel data from the tomographic image data, further performs volume rendering processing to generate three-dimensional image data and the like, and displays them on the display unit 7.

  The control unit 8 includes, for example, a CPU (Central Processing Unit), and based on an input signal from the input unit 20, a control program stored in the storage unit 9 or the storage devices 11 and 12 connected to the drive 10, etc. Is read and executed to control each unit.

  The storage unit 9 is configured by a semiconductor, a magnetic disk, or the like, and stores programs and data executed by the control unit 8. The drive 10 is equipped with removable storage devices 11 and 12, and transmits signals read therefrom to the control unit 8 and writes signals from the control unit 8 to the storage devices 11 and 12. The storage devices 11 and 12 are configured by removable media such as a USB (Universal Serial Bus) memory, an SD (Secure Digital) card, a memory stick (registered trademark), or a compact flash (registered trademark). Programs and data to be executed are stored according to instructions from the operator.

  The input unit 20 is configured by a trackball, a switch, and the like, and the operator performs measurement of the size of the affected area in the captured ultrasonic image, start and end of the examination, freeze operation, and the like.

  FIG. 2 is a block diagram illustrating a functional configuration example of the storage unit 9. At least a part of the functional units shown in FIG. 2 is realized by reading a storage device management program or the like into the control unit 8.

  The storage device management unit 9a manages whether or not the storage devices 11 and 12 are newly connected. When the storage device management unit 9a detects that a new storage device is connected, the storage device management unit 9a notifies the data replication unit 9b accordingly.

  The data replication unit 9b receives the notification from the storage device management unit 9a, acquires the access speed of the storage devices 11 and 12 in which the connection is detected, and stores the data representing the access speed as the target storage device 11 or the storage device 12 To record. Here, as a method of acquiring the access speed, for example, a method of calculating from the time required for reading and writing data of a specific size is used. When the acquired access speed is faster than the specified value, the data replication unit 9b displays a screen as shown in FIG. 3 on the display unit 7, for example, and stores the newly detected storage device in the device. Ask the operator whether to use it to speed up startup. The screen shown in FIG. 3 is provided with buttons (Yes button and No button in the example of FIG. 3) that allow the operator to select whether or not to use a function for speeding up the startup of the apparatus. Note that when the acquired access speed is slower than the specified value, the screen as shown in FIG. 3 may not be displayed.

  When the operator selects a Yes button (a button to use) on the screen shown in FIG. 3, the data duplicating unit 9b reads the ultrasonic software 9d stored in the storage unit 9, and a new connection is detected. In addition to copying to the storage devices 11 and 12, data indicating that the storage device in which the connection is detected can be used for speeding up (hereinafter referred to as data indicating distributed read / write correspondence) is recorded. Here, as a method of copying data, for example, there is a method of copying all or a part of the ultrasonic software 9d according to the free capacity of the connected device.

  Data 11a representing the access speed recorded in the storage device 11 and data 11b representing the distributed read / write correspondence, data 12a representing the access speed recorded in the storage device 12, and data 12b representing the distributed read / write correspondence are recorded by the data replication unit 9b. It will be used at the next startup.

  The data distribution read / write unit 9c refers to the storage devices 11 and 12 by the storage device management unit 9a, and when data indicating distributed read / write correspondence is recorded, the ultrasonic software 9d stored in the storage unit 9, Distributed reading and writing is performed with the ultrasonic software 11 c stored in the storage device 11 and the ultrasonic software 12 c stored in the storage device 12.

  Next, with reference to the flowchart of FIG. 4, a process executed by the ultrasound diagnostic imaging apparatus 1 when a storage device is newly connected will be described. This process is started when the storage device 11 or the storage device 12 is connected to the ultrasonic diagnostic imaging apparatus 1.

  In step S1, the storage device management unit 9a detects that the storage device 11 or the storage device 12 is connected. In step S2, the data replication unit 9b acquires the access speed of the storage device 11 or the storage device 12 in which connection is detected in the process of step S1. In step S3, the data replication unit 9b records data representing the access speed acquired in the process of step S2 in the target storage device 11 or storage device 12.

  In step S4, the data copying unit 9b determines whether or not the access speed acquired in the process of step S2 is faster than a specified value. If it is determined that the access speed is faster than the specified value, the process proceeds to step S5. Here, the specified value is a speed at which the ultrasonic software 9d stored in the storage unit 9 is accessed.

  In step S5, for example, the data replication unit 9b displays the screen shown in FIG. 3 and asks the operator whether or not to use a function for speeding up the startup of the apparatus. In step S6, the data replication unit 9b determines whether to use a function for speeding up the startup of the apparatus, that is, whether or not the Yes button has been selected by the operator on the screen shown in FIG. If it is determined that a function for accelerating the activation of the apparatus is used, the process proceeds to step S7.

  In step S7, the data copying unit 9b reads the ultrasonic software 9d stored in the storage unit 9, and copies it to the storage device 11 or the storage device 12 in which connection is detected in the process of step S1. Thereby, for example, as illustrated in FIG. 5, the ultrasonic software A to F configuring the ultrasonic software 9 d stored in the storage unit 9 is read and copied to the storage device 11 and the storage device 12.

  In step S8, the data replication unit 9b records data representing the distributed read / write correspondence in the storage device 11 or the storage device 12 in which the connection is detected in the process of step S1.

  If it is determined in step S3 that the access speed is slower than the specified value, or if it is determined in step S6 that the function for accelerating the activation of the apparatus is not used, the data replication unit 9b does nothing. Instead, the process returns to step S1, and the above-described processing is repeated.

  Through the above processing, the storage device 11 and the storage device that are determined to use the function for detecting the connection and increasing the speed of the ultrasound software stored in the storage unit 9 inside the ultrasound diagnostic imaging device 1. By duplicating to 12, it becomes possible to use it for distributed read / write processing for speeding up the activation of the device described later, and the access speed can be improved. In particular, it is possible to speed up the startup of the system.

  Next, an initialization process at the time of starting the apparatus will be described with reference to the flowchart of FIG. This process is started when the data distribution read / write unit 9c executes the startup management software. In starting this process, a storage device 11, a storage device 12, and a storage device 13 are connected to the ultrasonic diagnostic imaging apparatus 1 as additional storage devices.

  In step S <b> 11, the data distribution read / write unit 9 c determines whether or not the storage device 11 is for high-speed use based on data 11 b representing the distributed read / write correspondence stored in the storage device 11. In this example, the storage device 11 is determined to be used for speeding up. In step S12, the data distribution read / write unit 9c determines whether or not the storage device 12 is for high-speed use based on the data 12b representing the distributed read / write correspondence stored in the storage device 12. In this example, the storage device 12 is determined to be used for speeding up. In step S <b> 13, the data distribution read / write unit 9 c determines whether or not the storage device 13 is for high-speed use based on data 13 b (not shown) representing the distributed read / write correspondence stored in the storage device 13. In this example, it is determined that the storage device 11 is not used for speeding up. Although the storage device 11 and the storage device 12 are determined to be used for speeding up by the processing in steps S11 to S13, the storage device 13 that is determined not to be used for speeding up is excluded from the processing target.

  In step S14, the data distribution read / write unit 9c acquires the access speed of the storage unit 9. In this example, 10 bytes / s is acquired as the access speed of the storage unit 9. In step S15, the data distribution read / write unit 9c acquires the access speed from the data 11a representing the access speed stored in the storage device 11. In this example, 7 bytes / s is acquired as the access speed of the storage device 11. In step S <b> 16, the data distribution read / write unit 9 c acquires the access speed from the data 12 a representing the access speed stored in the storage device 12. In this example, 12 bytes / s is acquired as the access speed of the storage device 12.

  In step S17, the data distribution read / write unit 9c sets and stores the storage device priority when reading data from the storage device based on the access speed acquired in the processing of steps S14 to S16. In this case, the access speed of the storage unit 9 is 10 bytes / s, the access speed of the storage device 11 is 7 bytes / s, and the access speed of the storage device 12 is 12 bytes / s. 9. The priority order is set in the order of the storage device 11.

  Through the above processing, the priority order of the storage unit 9 inside the ultrasound diagnostic imaging apparatus 1 and the externally connected storage device 11 and storage device 12 is set, and can be used for distributed reading processing of ultrasound software to be described later. It becomes possible.

  Next, with reference to the flowchart of FIG. 7, the distributed reading process of the ultrasonic software considering the load on the storage device will be described. This process is started when the data distribution read / write unit 9c executes the startup management software. In starting this process, the priority order is set in the order of the storage device 12, the storage unit 9, and the storage device 11 by the initialization process of FIG.

  In step S21, the data distribution read / write unit 9c acquires the load of the storage unit 9. In this example, 0% is acquired as the load of the storage unit 9. In step S22, the data distribution read / write unit 9c acquires the load of the storage device 11. In this example, 0% of the load on the storage device 11 is acquired. In step S23, the data distribution read / write unit 9c acquires the load of the storage device 12. In this example, 0% is acquired as the load of the storage device 12.

  In step S24, the data distribution read / write unit 9c reads the ultrasonic software A from the storage device 12 based on the load acquired in the processing of steps S21 to S23. In this case, since the loads of all of the storage unit 9, the storage device 11, and the storage device 12 are 0%, the ultrasound software A is transferred from the storage device 12 with the highest priority based on the preset priority. Is read.

  In step S25, the data distribution read / write unit 9c acquires the load of the storage unit 9. In this example, 0% is acquired as the load of the storage unit 9. In step S26, the data distribution read / write unit 9c acquires the load of the storage device 11. In this example, 0% of the load on the storage device 11 is acquired. In step S27, the data distribution read / write unit 9c acquires the load of the storage device 12. In this example, 80% of the load on the storage device 12 is acquired.

  In step S28, the data distribution read / write unit 9c reads the ultrasonic software B from the storage unit 9 based on the load acquired in the processing of steps S25 to S27. In this case, although the load on the storage unit 9 and the storage device 11 is 0%, the ultrasound software B is read from the storage unit 9 having a higher priority order based on the preset priority order.

  In step S29, the data distribution read / write unit 9c acquires the load of the storage unit 9. In this example, 70% of the load on the storage unit 9 is acquired. In step S30, the data distribution read / write unit 9c acquires the load of the storage device 11. In this example, 0% of the load on the storage device 11 is acquired. In step S31, the data distribution read / write unit 9c acquires the load of the storage device 12. In this example, 30% of the load of the storage device 12 is acquired.

  In step S32, the data distribution read / write unit 9c reads the ultrasonic software C from the storage device 11 based on the load acquired in the processing of steps S29 to S31. In this case, the ultrasonic software C is read from the storage device 11 with the lowest load.

  Through the above processing, it is possible to distribute and read the ultrasonic software from the storage device with the lowest load and high priority, and the access speed is improved. In addition to the distributed reading process based on the load of the storage device immediately before reading, for example, the distributed reading process may be performed based on the total number or total size of ultrasonic software to be read. In addition, the storage device from which each ultrasonic software is read may be stored in advance in a table, and the distributed reading process may be performed based on the information.

  Next, the distributed reading process of the ultrasonic software when a reading error occurs will be described with reference to the flowchart of FIG. This process is started when the data distribution read / write unit 9c executes the startup management software. In starting this process, the priority order is set in the order of the storage device 12, the storage unit 9, and the storage device 11 by the initialization process of FIG.

  In step S41, the data distribution read / write unit 9c acquires the load of the storage unit 9. In this example, 70% of the load on the storage unit 9 is acquired. In step S42, the data distribution read / write unit 9c acquires the load of the storage device 11. In this example, 0% of the load on the storage device 11 is acquired. In step S43, the data distribution read / write unit 9c acquires the load of the storage device 12. In this example, 30% of the load of the storage device 12 is acquired.

  In step S44, the data distribution read / write unit 9c reads the ultrasonic software D from the storage device 11 based on the load acquired in the processing of steps S41 to S43. In this case, the ultrasonic software D is read from the storage device 11 with the lowest load. Here, since a reading error has occurred, the data distribution read / write unit 9 c reads the ultrasonic software D from the storage device 12. In this case, the ultrasonic software D is read from the storage device 12 having the next lowest load after the storage device 11.

  With the above processing, even if an error occurs when reading ultrasound software, stable access can be achieved by reading the ultrasound software from the storage device with the next lowest load and higher priority. It becomes possible. Note that the storage device in which the read error has occurred may be excluded from the processing target.

  Next, with reference to the flowchart of FIG. 9, data distributed read / write processing based on the priority of ultrasonic software will be described. This processing is started when the data distribution read / write unit 9c executes the ultrasonic software, and the data to be read / written is assumed to be temporary necessary for the ultrasonic software processing. The ultrasonic software is composed of ultrasonic ultrasonic waves A and software B, and data is read and written based on a preset priority. In the example of FIG. 9, the priority of the ultrasonic software A is set to medium, and the priority of the software B is set to high.

  In step S51, the data distribution read / write unit 9c acquires the load of the storage unit 9. In this example, 70% of the load on the storage unit 9 is acquired. In step S52, the data distribution read / write unit 9c acquires the load of the storage device 11. In this example, 0% of the load on the storage device 11 is acquired. In step S53, the data distribution read / write unit 9c acquires the load of the storage device 12. In this example, 30% of the load of the storage device 12 is acquired.

  In step S54, the data distribution read / write unit 9c reads / writes data to / from the storage device 12 based on the load acquired in the processes of steps S51 to S53. In this case, data is read from and written to the storage device 12 having a medium load.

  In step S61, the data distribution read / write unit 9c acquires the load of the storage unit 9. In this example, 20% of the load on the storage unit 9 is acquired. In step S62, the data distribution read / write unit 9c acquires the load of the storage device 11. In this example, 0% of the load on the storage device 11 is acquired. In step S63, the data distribution read / write unit 9c acquires the load of the storage device 12. In this example, 50% of the load on the storage device 12 is acquired.

  In step S64, the data distribution read / write unit 9c reads / writes data to / from the storage device 11 based on the load acquired in the processes of steps S61 to S63. In this case, data is read from and written to the storage device 12 with the highest priority (that is, the lowest load).

  Through the above processing, data can be read and written based on the priority set in the ultrasonic software. Note that the priority of ultrasonic software increases in proportion to the amount of data read / write per unit time. For example, ultrasound software that collects and stores large volumes of raw data in real time takes high priority.

  Next, the distributed read / write processing will be further described with reference to schematic diagrams. FIG. 10 shows an example of starting in the initial state when all the ultrasonic software stored in the storage unit 9 is read. As shown in FIG. 10, the ultrasonic software composed of the ultrasonic software A to F is read and activated by the data distribution read / write unit 9c in the initial state. Further, when the storage device 11 used for speeding up is connected to the ultrasonic diagnostic imaging apparatus 1, as shown in FIG. 11, it is composed of ultrasonic software A to F stored in the storage unit 9. The ultrasonic software is copied to the storage device 11. In such a state, the ultrasonic software A to C is read from the storage unit 9 and activated by the data distribution read / write unit 9c, and the ultrasonic software D to F is read from the storage device 11 and activated. The start-up is speeded up by reading the ultrasonic software in such a distributed manner.

  Further, when the storage device 12 used for high-speed applications is connected to the ultrasonic diagnostic imaging apparatus 1, as shown in FIG. 12, the storage device 12 includes ultrasonic software A to F stored in the storage unit 9. The existing ultrasonic software is also copied to the storage device 12. In such a state, the ultrasonic software A and B are read from the storage unit 9 by the data distribution read / write unit 9c, and the ultrasonic software C and D are read from the storage device 11 and activated. F is read from the storage device 12 and activated. The more external storage devices are distributed in this way, the faster the startup.

  As described above, without adding a hard disk, the main storage device data is copied to an external storage device such as a removable USB memory, and the data is read and written according to the status of each storage device. By doing so, it is possible to speed up the startup of the system at a low cost.

  The present invention is not limited to the above-described embodiments as they are, and in the implementation stage, the constituent elements may be modified and embodied without departing from the scope of the invention, or a plurality of configurations disclosed in the above-described embodiments may be used. Various inventions can be formed by appropriately combining the elements. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, you may combine the component covering different embodiment suitably.

It is a figure which shows the structural example of the ultrasonic image diagnostic apparatus to which this invention is applied. It is a block diagram which shows the function structural example of a memory | storage part. It is a figure which shows the example of a screen which asks whether the speed-up function of an apparatus is utilized. It is a flowchart explaining a process when a memory | storage device is newly connected. It is a schematic diagram which shows the example of replication of data. It is a flowchart explaining the initialization process in apparatus starting. It is a flowchart explaining the distributed reading process of the ultrasonic software in consideration of the load on the storage device. It is a flowchart explaining the distributed reading process of the ultrasonic software when a reading error occurs. It is a flowchart explaining the distributed reading / writing process of the data based on the priority of ultrasonic software. It is a schematic diagram which shows the example of starting of an initial state. It is a schematic diagram which shows the example of starting when one memory | storage device is connected. It is a schematic diagram which shows the example of starting when two memory | storage devices are connected.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Ultrasonic image diagnostic apparatus 9 Memory | storage part 9a Memory | storage device management part 9b Data replication part 9c Data distribution read / write part 9d Ultrasonic software 11 Memory | storage device 12 Memory | storage device

Claims (10)

An acquisition unit that acquires a reception signal obtained by scanning a subject with ultrasonic waves, a generation unit that generates an ultrasonic image based on the reception signal acquired by the acquisition unit, and a generation unit that is generated by the generation unit In an ultrasonic diagnostic imaging apparatus having display means for displaying the ultrasonic image,
Storage device management means for managing the connection status of external storage devices and changes thereof;
When it is recognized by the storage device management means that a new storage device is connected, replication means for copying data from the already connected storage device to the newly connected storage device;
An ultrasonic diagnostic imaging apparatus comprising: a distributed read / write unit that reads and writes data in a distributed manner based on an attribute of a connected storage device. The ultrasonic image diagnosis apparatus according to claim 1, wherein the duplicating unit displays a screen that allows an operator to select whether or not to duplicate data. Access speed acquisition means for acquiring the access speed of the newly connected storage device;
Determination means for determining whether to replicate data based on the access speed acquired by the access speed acquisition means; and
The ultrasonic image diagnosis according to claim 1, wherein the duplicating unit duplicates the data to the newly connected storage device when the judging unit determines to duplicate the data. apparatus. The ultrasonic image diagnosis according to any one of claims 1 to 3, wherein the duplicating unit changes a data amount of data to be duplicated according to a free capacity of the newly connected storage device. apparatus. The ultrasonic diagnostic imaging apparatus according to claim 1, wherein the attribute of the storage device is a capacity, a load, or an access speed of the storage device. Load acquisition means for acquiring the load of the connected storage device;
Determining means for determining from which storage device data is read based on the load acquired by the load acquisition means; and
The ultrasonic image diagnostic apparatus according to claim 1, wherein the distributed read / write unit reads data from the storage device determined by the determination unit. Access speed acquisition means for acquiring the access speed of the connected storage device;
Determining means for determining from which storage device the data is read based on the access speed acquired by the access speed acquisition means;
The ultrasonic image diagnostic apparatus according to claim 1, wherein the distributed read / write unit reads data from the storage device determined by the determination unit. A decision means for deciding from which storage device the data is read based on a preset priority;
The ultrasonic image diagnostic apparatus according to claim 1, wherein the distributed read / write unit reads data from the storage device determined by the determination unit. The ultrasonic diagnostic imaging apparatus according to any one of claims 1 to 8, wherein the distributed read / write unit reads data from another storage device again when an error occurs during data read / write. An acquisition unit that acquires a reception signal obtained by scanning a subject with ultrasonic waves, a generation unit that generates an ultrasound image based on the reception signal acquired by the acquisition unit, and a generation unit that is generated by the generation unit A control program executed in an ultrasound diagnostic imaging apparatus having display means for displaying the ultrasound image,
A storage device management step for managing the connection status of external storage devices and changes thereof;
When it is recognized that a storage device is newly connected by the storage device management step, a replication step of copying data from the already connected storage device to the newly connected storage device;
A control program for an ultrasonic diagnostic imaging apparatus, comprising: a distributed read / write step for reading and writing data in a distributed manner based on attributes of a connected storage device.

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