JP2007014485A - Medical device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To facilitate the addition of new probes without increasing a man-hour. <P>SOLUTION: In an ultrasonic observer 2, a probe ID detection part 21 detects a unique probe ID allocated to ultrasonic probes 10, a plurality of probe application software (probe appli) 30 specifies the operating environment of each probe 10, a starting mode 38 extracts the probe appli 30 corresponding to a detected probe ID and starts it, and a registration mode 39 registers setting information 52 of each probe and a program 50 of the probe appli 30. The ultrasonic observer 2 further comprises a common application software (common appli) 31 to implement an action which is common to each probe 10, a program storage memory 22 to memorize the programs of both the software, and a CPU 12 to read the programs of both the software out of the program storage memory 22 and to control each hardware based on the read programs. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a medical device that generates an image used for medical diagnosis from an electrical signal obtained by a probe such as an ultrasonic probe.

  As a medical device that generates an image to be used for medical diagnosis from an electrical signal obtained by a probe, an ultrasonic transducer that radiates ultrasonic waves to a required part of a living body and receives an echo signal from the living body is disposed at the tip. 2. Description of the Related Art An ultrasonic observer that is connected to an acoustic probe and generates an ultrasonic image from an echo signal is known.

  Various types of ultrasonic probes are connected to the ultrasonic observation device according to the observation site and diagnostic application. For this reason, it is necessary to change various setting parameters related to the operation control of the ultrasonic probe and the generation of the ultrasonic image according to the type of the connected ultrasonic probe.

In conventional ultrasonic observers, this parameter setting change was performed by operating the operation dial or switch. An ultrasonic diagnostic apparatus (see Patent Document 1) that automatically sets image quality adjustment parameters of an ultrasonic image according to the identification result, or a focal zone on an ultrasonic image (based on the characteristics of the identified ultrasonic probe) There has been proposed an ultrasonic diagnostic apparatus (see Patent Document 2) for obtaining a range in which an ultrasonic beam is narrowed.
JP-A-5-253220 JP-A-5-305086

  By the way, in the ultrasonic observation device, dedicated application software (hereinafter abbreviated as an application) is installed in order to organically perform various processes such as operation control of an ultrasonic probe and generation of an ultrasonic image. ing.

  As schematically shown in FIG. 7, an application 100 installed in a conventional ultrasonic observation apparatus includes a system setting mode 101 that adjusts various setting parameters such as a gain value of an echo signal, a dynamic range, STC, and echo enhancement. A live mode 102 for acquiring an ultrasonic image as a moving image, a freeze mode 103 for acquiring an ultrasonic image as a still image, and a measurement mode 104 for performing B-mode measurement, Doppler mode measurement, and the like are configured to be executable. .

  The application 100 includes a CPU 110, a memory (ROM, RAM, etc.) 111, and ultrasonic related hardware via a device driver 107 built in the operating system (OS) 106 of the software 105 and a BIOS 109 built in the hardware 108. (Transmission circuit, reception circuit, signal processing unit, etc.) 112, display control related hardware (digital scan converter (DSC), image memory, D / A converter, etc.) 113, data input / output related hardware (CD-ROM, DVD-) Signals are exchanged with hardware such as drivers for various storage media such as ROM, network communication I / F 114, and the like.

  In the setting information file 115 of the application 100, a unique probe ID for identifying the type of ultrasonic probe and setting information of various setting parameters are written in advance. In the application 100, every time the mode 101 to 104 is shifted, a detection result of a probe ID detection unit (not shown) that detects a probe ID from a connected ultrasonic probe, and a probe written in the setting information file 115 The ID is collated, the type of the connected ultrasonic probe is identified, various setting parameters corresponding to the identified ultrasonic probe are extracted, and various processes are performed using this.

  As shown in FIG. 8, the software processing procedure using the application 100 as described above first turns on the power of the ultrasonic observation device to activate the OS 106, and then activates the application 100. Each mode 101 to 104 is selected by the operator. At this time, in the application 100, the type of the connected ultrasonic probe is identified by comparing the detection result of the probe ID detection unit with the probe ID written in the setting information file 115. Various setting parameters corresponding to the acoustic probe are extracted. The identification of the type of ultrasonic probe and the extraction of various setting parameters are continued until the application 100 is terminated.

  Here, when a new ultrasonic probe to be connected is to be added to the ultrasonic observer in which the application 100 as described above is installed, the type of the ultrasonic probe to be newly added is correctly identified. It is necessary to perform an operation test for verifying each mode 101 to 104. This operation test must also be performed for existing ultrasonic probes because the identification of the type of an ultrasonic probe to be newly added may not be performed correctly. I must.

  Further, the probe ID of the ultrasonic probe detected by the probe ID detection unit is stored in the memory 111 of the hardware 108, but the probe ID writing area in the memory 111 is rewritten due to a bug in the application 100, As a result, the type of the ultrasonic probe may be mistakenly identified. Therefore, it is necessary to grasp the cause of the bug and deal with the above problem at the development stage of the application 100. However, in recent years, multitasking has often been adopted for the application 100, and it is extremely difficult to grasp the cause of such a software bug, which may lead to an increase in the development man-hour of the application 100.

  Furthermore, for example, when trying to connect an ultrasound probe for intracorporeal diagnosis to an ultrasonic observation device dedicated to an extracorporeal diagnostic ultrasound probe, the ultrasound probe has a completely different driving method and display format of ultrasound images. In many cases, existing applications cannot be supported when adding a new device.In this case, in addition to the newly added ultrasound probe, a new app that supports existing ultrasound probes has been developed. I had to. In addition, the identification operation test including the existing ultrasonic probe must be performed for each of the modes 101 to 104, which may cause a significant increase in man-hours.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a medical device in which a new probe can be easily added without increasing man-hours.

  In order to achieve the above object, the present invention provides a unique probe ID assigned to each probe in a medical device in which a plurality of types of probes are connected and an image for use in medical diagnosis is generated from an electrical signal obtained by the probe. A probe ID detecting means for detecting the probe ID, a plurality of probe application software defining the operating environment of each probe, and a probe application software corresponding to the probe ID detected by the probe ID detecting means, The start mode for starting this, and the setting information for each probe including at least the probe ID, and the registration mode for registering the probe application software program are configured to be executable, and perform operations common to each probe. Common application software and both Storage means for storing a Futouea programs, both software program is read from the storage means, characterized in that a control means for controlling each hardware based on these.

  If the probe ID is changed during the activation of the probe application software, the probe application software terminates the operation and the common application software returns to the activation mode. It is preferable.

  At least a part of the hardware is configured by a field programmable gate array, and the common application software, in the registration mode, in addition to the setting information and the program of the probe application software, the field programmable gate array. It is preferable to register gate array circuit construction data and construct the field programmable gate array based on the circuit construction data in the startup mode.

  Data reading means is provided for reading the setting information and the probe application software program from an external storage medium storing the setting information and the probe application software program, and storing the setting information and the probe application software program in the storage means. It is preferable.

  In this case, in addition to the setting information and the probe application software program, the circuit construction data is stored in the external storage medium, and the data reading means includes the setting information and the probe. In addition to the application software program, the circuit construction data is preferably read from the external storage medium and stored in the storage means.

  The external storage medium is preferably at least one of a magnetic storage medium, an optical storage medium, and a network-connected data storage device.

  It is preferable that the setting information includes a name of probe application software corresponding to the probe ID.

  It is preferable that the probe is an ultrasonic probe in which an ultrasonic transducer that irradiates a necessary part in the living body with ultrasonic waves and receives an echo signal from the necessary part in the living body is arranged at the tip.

  In this case, a part of the hardware configured by the field programmable gate array includes a transmission circuit that transmits a pulse voltage for generating an ultrasonic wave in the ultrasonic transducer, a reception circuit that receives the echo signal, and the echo It is preferably at least one of a B-mode processing unit that generates a B-mode image from a signal and a Doppler processing unit that generates a Doppler image from the echo signal.

  It is preferable that the setting information includes at least one of a frequency, a focal length, and the number of sound rays according to the display depth of the ultrasonic wave.

  Switching means for selectively switching the display depth, the probe application software, the frequency included in the setting information according to the display depth selected by the switching means, It is preferable to automatically change the setting to the focal length or the number of sound rays.

  According to the medical device of the present invention, probe ID detection means for detecting a unique probe ID assigned to each probe, a plurality of probe application software that defines the operating environment of each probe, and probe ID detection means A probe mode that extracts the probe application software corresponding to the detected probe ID and starts it, and a registration mode that registers the setting information of each probe including at least the probe ID, and the probe application software program Is configured to be executable, and common application software that executes common operations for each probe, storage means for storing programs of both software, and programs for both software are read from the storage means, Based on each hardware Since a Gosuru control unit, without increasing the number of steps, it is possible to add a new probe easily.

  In FIG. 1, the ultrasonic observation device 2 of the present invention is configured such that a plurality of types of ultrasonic probes 10 can be connected via a connector (not shown). An ultrasonic transducer 11 is disposed in the ultrasonic probe 10. As a driving method of the ultrasonic transducer 11, for example, a convex electronic scanning method, a radial electronic scanning method, a mechanical scanning method, or the like is adopted.

  The ultrasonic observation device 2 is totally controlled by the CPU 12. The CPU 12 transmits a control signal (timing pulse) to the transmission circuit 13 and the reception circuit 14 connected to the ultrasonic transducer 11. The transmission circuit 13 transmits a pulse voltage for causing the ultrasonic transducer 11 to generate ultrasonic waves under the control of the CPU 12. The receiving circuit 14 receives an echo signal from the living body via the ultrasonic transducer 11.

  The B mode processing unit 15 performs various signal processing such as amplification, dynamic range, STC, echo enhancement, and the like on the echo signal received by the receiving circuit 14 to generate a B mode image. The Doppler processing unit 16 performs frequency analysis of the echo signal and generates a Doppler image.

  The digital scan converter (DSC) 17 performs A / D conversion on the B-mode image and the Doppler image generated by the B-mode processing unit 15 and the Doppler processing unit 16, and then converts them into a TV signal scanning method (NTSC method). This is transmitted to the image memory 18. The image memory 18 temporarily stores the image signal transmitted from the DSC 17. A D / A converter (D / A) 19 reads an image signal from the image memory 18 and performs D / A conversion on the image signal. The signal D / A converted by the D / A 19 is displayed on the monitor 20 as an ultrasonic image.

  Connected to the CPU 12 are a probe ID detection unit 21, a program storage memory 22, a RAM 23, a communication I / F 24, a driver 25, and an operation unit 26. The probe ID detector 21 detects a unique probe ID assigned to each ultrasonic probe 10 connected to the ultrasonic observer 2. The probe ID is, for example, the model number or serial number of the ultrasonic probe 10. And is held in a storage medium such as a memory or a wireless IC tag mounted on the ultrasonic probe 10. When the ultrasonic probe 10 is connected to the ultrasonic observation device 2, the probe ID detection unit 21 accesses the storage medium mounted on the ultrasonic probe 10 and acquires the probe ID. Note that the probe ID may be expressed by a difference in current value by changing the current value flowing between the ultrasonic probe 10 and the ultrasonic observer 2 for each ultrasonic probe 10. Alternatively, a probe ID may be detected by providing a signal line of several bits sufficient to represent the probe ID.

  The program storage memory 22 stores various programs and data. The RAM 23 temporarily stores various data necessary for program execution. The CPU 12 reads the program and data stored in the program storage memory 22 to the RAM 23 which is a working memory, and controls each unit based on these.

  The communication I / F 24 mediates data exchange with a network 27 such as the Internet. The driver 25 mediates data exchange with various storage media 28 such as a floppy (registered trademark) disk, MO, CD-ROM, DVD-ROM, and flash memory. The operation unit 26 includes a keyboard and a mouse, and is operated when various setting parameters are manually changed.

  As schematically shown in FIG. 2, the program storage memory 22 includes a plurality of probe application software (hereinafter abbreviated as probe applications) 1, 2, 30-1, 30-2, Common application software (hereinafter abbreviated as a common application) 31 and software 33 such as an operating system (OS) 32 are installed.

  The probe application 30 defines the operating environment of each ultrasonic probe 10, and includes a system setting mode 34 for adjusting various setting parameters such as a gain value of an echo signal, a dynamic range, STC, and echo enhancement, and an ultrasonic image. A live mode 35 that acquires a moving image, a freeze mode 36 that acquires an ultrasonic image as a still image, and a measurement mode 37 that performs B-mode measurement, Doppler mode measurement, and the like are configured to be executable.

  The probe application 30 is created in advance as dedicated application software for each ultrasonic probe 10. As shown in FIG. 3, the program 50 of the probe application 30 corresponds to the above-described probe ID, the name of the probe application 30, and the ultrasonic display depth on the registration medium 51 distributed as an accessory of the ultrasonic probe 10. It is stored together with setting information 52 including the frequency, focal length, and number of sound rays.

  The ultrasonic display depth can be selectively switched by operating the operation unit 26. The probe application 30 sets the frequency, focal length, and number of sound rays (number of driven ultrasonic transducers 11 to be driven) of the ultrasonic waves emitted from the ultrasonic transducers 11 according to the display depth selected by the operation unit 26. Settings are automatically changed to the frequency, focal length, and number of sound rays of the information 52.

  Returning to FIG. 2, the common application 31 performs an operation common to the ultrasonic probes 10. The probe application 30 corresponding to the probe ID detected by the probe ID detection unit 21 is extracted, and this is extracted. When the activation mode 38 to be activated and the ultrasonic probe 10 to be connected are newly added, the program 50 of the probe application 30 and the setting information 52 stored in the registration medium 51 attached to the ultrasonic probe 10 are stored in the driver 25. And a registration mode 39 for installing in the program storage memory 22 is configured to be executable.

  When an operation for changing the probe ID is performed while the probe application 30 is activated, the probe application 30 ends its operation, and the common application 31 returns to the activation mode 38. Note that examples of operations for changing the probe ID include not only when the ultrasonic probe 10 is replaced, but also when the ultrasonic probe 10 is connected from a state in which the ultrasonic probe 10 is not connected. For example, the ultrasonic observer 2 is configured to be able to connect a plurality of ultrasonic probes 10 and the ultrasonic probe 10 to be used is switched by an operator's operation.

  The probe application 30 and the common application 31 are connected to the CPU 12, the memory (program storage memory 22, the RAM 23) 43, and the ultrasonic related hardware (via the device driver 40 built in the OS 32 and the BIOS 42 built in the hardware 41. Transmission circuit 13, reception circuit 14, B-mode processing unit 15, and Doppler processing unit 16) 44, display control related hardware (DSC 17, image memory 18, and D / A 19) 45, data input / output related hardware (communication I / F 24) , And drivers 25) 46 to exchange signals with each hardware.

  In the setting information file 47, setting information 52 installed from the registration medium 51 to the program storage memory 22 is written from the program storage memory 22. In the common application 31, in the startup mode 38, the detection result of the probe ID detection unit 21 is collated with the probe ID of the setting information 52 written in the setting information file 47 to determine the type of the connected ultrasonic probe 10. The probe application 30 to be activated is extracted by performing identification and acquiring the name of the probe application 30 corresponding to the identified probe ID from the setting information file 47.

  Next, the operation of the ultrasonic observation device 2 having the above configuration will be described with reference to the flowcharts of FIGS. First, as shown in FIG. 4, the ultrasonic observation apparatus is turned on to activate the OS 32, and then the common application 31 is activated.

  After the common application 31 is activated, an activation mode 38 is executed, and the probe ID detection unit 21 detects the probe ID of the ultrasonic probe 10. The detected probe ID is collated with the probe ID written in the setting information file 47, and the type of the connected ultrasonic probe 10 is identified. Then, the name of the probe application 30 corresponding to the identified probe ID is acquired from the setting information file 47, the probe application 30 to be activated is extracted, and the extracted probe application 30 is activated.

  After the probe application 30 is activated, the operator selects a desired mode among the system setting mode 34, the live mode 35, the freeze mode 36, and the measurement mode 37, and an ultrasonic diagnosis using the ultrasonic probe 10 is performed. .

  In ultrasonic diagnosis, a pulse voltage is generated from the transmission circuit 13 to the ultrasonic transducer 11 under the control of the CPU 12. The ultrasonic transducer 11 is excited by this pulse voltage, whereby ultrasonic waves are emitted from the ultrasonic transducer 11 toward the observation site of the living body.

  As described above, the living body is irradiated with ultrasonic waves, and echo signals from the living body are received by the ultrasonic transducer 11. The echo signal from the living body is input to the receiving circuit 14 and transmitted to the B-mode processing unit 15 or the Doppler processing unit 16. The B mode processing unit 15 and the Doppler processing unit 16 generate a B mode image and a Doppler image from the echo signal.

  The B mode image and the Doppler image generated by the B mode processing unit 15 and the Doppler processing unit 16 are converted into the NTSC format by the DSC 17 and temporarily stored in the image memory 18. The image data stored in the image memory 18 is D / A converted by the D / A 19 and displayed as an ultrasonic image on the monitor 20.

  Here, when the operation unit 26 is operated by the operator and the display depth of the ultrasonic wave is switched, the ultrasonic wave emitted from the ultrasonic transducer 11 according to the display depth selected by the probe application 30 is changed. The frequency, focal length, and number of sound rays are automatically changed to the frequency, focal length, and number of sound rays of the setting information 52. When an operation for changing the probe ID is performed, the operation of the probe application 30 is terminated, the common application 31 is returned to the activation mode 38, the type of the connected ultrasonic probe 10 is identified, and the probe ID The probe application 30 corresponding to is extracted again.

  When the operator operates the operation unit 26 and selects the registration mode, the probe application program 50 and the setting information 52 are read from the registration medium 51 by the driver 25 as shown in FIG. The read probe application program 50 is copied and installed in the program storage memory 22. The setting information 52 is written from the program storage memory 22 to the setting information file 47. These series of processes are continued until the probe application 30 and the common application 31 are terminated.

  As described above, the ultrasonic observation device 2 prepares a dedicated probe application 30 for each ultrasonic probe 10 and probes the probe ID of each ultrasonic probe 10 in the activation mode 38 of the common application 31. A probe application 30 detected by the ID detection unit 21 and corresponding to the detected probe ID is extracted, and each ultrasonic probe 10 is operated in the operating environment of the extracted probe application 30. The operation test for verifying whether or not the ten types of identification are correctly performed can be performed in only one place of the activation mode 38.

  When a new ultrasonic probe 10 to be connected is newly added, the probe application 30 may be developed without changing the common application 31, and the program 50 and setting information 52 of the probe application 30 are installed from the registration medium 51. Just do it.

  In addition, since the degree of freedom in changing the display format of the ultrasound image and various setting parameters is expanded, it is possible to easily cope with the addition of a new ultrasound probe with a completely different driving method and ultrasound image display format. it can.

  Furthermore, the ultrasonic display depth can be selectively switched, and the frequency, focal length, and number of sound rays of the ultrasonic wave emitted from the ultrasonic transducer 11 are automatically set according to the selected display depth. Since the change is made, the ultrasonic diagnosis can always be performed under optimum conditions without bothering the operator. In particular, when an ultrasonic transducer capable of transmitting and receiving ultrasonic waves having a wide frequency band is used and the transmission and reception frequencies are switched in stages, this effect is great.

  Note that at least one of the transmission circuit 13, the reception circuit 14, the B-mode processing unit 15, and the Doppler processing unit 16 configuring the ultrasonic-related hardware 44 is a field programmable gate array (hereinafter abbreviated as FPGA). 6, and a registration medium 61 storing the FPGA circuit construction data 60 together with the program 50 of the probe application 30 and the setting information 52 is prepared, and the registration medium 61 is registered in the registration mode 39 as shown in FIG. When the data is read from the FPGA, the FPGA circuit construction data 60 is also read and stored in the program storage memory 22, and when the probe application 30 is activated in the activation mode 38, the FPGA circuit construction data 60 corresponding to the probe ID is stored. Based on this, an FPGA circuit may be constructed. In this case, the ultrasonic-related hardware 44 itself must be changed when the number of drive elements is changed in a method of simultaneously driving a plurality of ultrasonic transducers, such as a convex electronic scanning method or a radial electronic scanning method. This is especially effective when it is necessary.

  In the above embodiment, the registration media 51 and 61 are used to describe the example in which the program 50 of the probe application 30, the setting information 52, or the circuit construction data 60 of the FPGA is installed in the program storage memory 22. These data may be obtained from a data storage device such as a server connected via the network 27 in order to reduce the cost required for 51 and 61.

  In the above embodiment, all of the frequency, focal length, and number of sound rays of the ultrasonic wave emitted from the ultrasonic transducer 11 are changed according to the display depth of the ultrasonic wave. Any one of them may be changed.

  In the above-described embodiment, the ultrasonic observation device 2 to which the ultrasonic probe 10 is connected has been described as an example of the medical device. However, the electronic endoscope apparatus to which the electronic endoscope probe is connected, The present invention can also be applied to other medical devices such as an ultrasonic endoscope apparatus to which an endoscope is connected.

It is a block diagram which shows the structure of the ultrasonic observation device of this invention. It is a schematic diagram which shows the structure and connection relationship of software and hardware. It is explanatory drawing which shows the content of the registration medium. It is a flowchart which shows the process sequence of software. It is a flowchart which shows the process sequence of the software in a registration mode. It is explanatory drawing which shows another embodiment of the content of a registration medium. It is a schematic diagram which shows the structure and connection relation of the software and hardware of the conventional ultrasonic observation device. It is a flowchart which shows the process sequence of the software of the conventional ultrasonic observer.

Explanation of symbols

2 Ultrasonic Observer 10 Ultrasonic Probe 11 Ultrasonic Transducer 12 CPU
DESCRIPTION OF SYMBOLS 13 Transmission circuit 14 Reception circuit 15 B mode process part 16 Doppler process part 21 Probe ID detection part 22 Program storage memory 24 Communication I / F
25 Driver 26 Operation unit 30 Probe application software (probe application)
31 Common application software (common application)
38 Startup mode 39 Registration mode 50 Program 51, 61 Registration media 52 Setting information 60 Circuit construction data

Claims (11)

In a medical device in which multiple types of probes are connected and generate an image for medical diagnosis from an electrical signal obtained by the probe,
Probe ID detection means for detecting a unique probe ID assigned to each probe;
Multiple probe application software that defines the operating environment of each probe,
The probe application software corresponding to the probe ID detected by the probe ID detection means is extracted and activated, the setting information of each probe including at least the probe ID, and the probe application software A registration mode for registering the software program is configured to be executable, and common application software that executes a common operation for each probe;
Storage means for storing both software programs;
A medical device comprising: control means for reading programs of both software from the storage means and controlling each hardware based on the programs.   If an operation for changing the probe ID is performed during the startup of the probe application software, the probe application software terminates its operation, and the common application software returns to the startup mode. The medical device according to claim 1, wherein the medical device is characterized. At least a part of the hardware is composed of a field programmable gate array,
In the registration mode, the common application software registers circuit setting data of the field programmable gate array in addition to the setting information and the probe application software program, and in the startup mode, the circuit The medical device according to claim 1, wherein the field programmable gate array is constructed based on construction data.   Data reading means is provided for reading the setting information and the probe application software program from an external storage medium storing the setting information and the probe application software program, and storing the setting information and the probe application software program in the storage means. The medical device according to any one of claims 1 to 3, wherein: In addition to the setting information and the probe application software program, the circuit construction data is stored in the external storage medium,
5. The data reading means, in addition to the setting information and the probe application software program, reads the circuit construction data from the external storage medium and stores the data in the storage means. Medical device as described in.   The medical device according to claim 4 or 5, wherein the external storage medium is at least one of a magnetic storage medium, an optical storage medium, and a data storage device connected to a network.   The medical device according to any one of claims 1 to 6, wherein the setting information includes a name of probe application software corresponding to the probe ID.   2. The probe according to claim 1, wherein the probe is an ultrasonic probe in which an ultrasonic transducer that irradiates a necessary part in a living body with ultrasonic waves and receives an echo signal from the necessary part in the living body is disposed at a tip. The medical device according to any one of 1 to 7.   A part of the hardware configured by the field programmable gate array includes a transmission circuit that transmits a pulse voltage for generating an ultrasonic wave in the ultrasonic transducer, a reception circuit that receives the echo signal, and B from the echo signal. The medical device according to claim 8, wherein the medical device is at least one of a B-mode processing unit that generates a mode image and a Doppler processing unit that generates a Doppler image from the echo signal.   The medical according to claim 8 or 9, wherein the setting information includes at least one of a frequency, a focal length, and the number of sound rays according to a display depth of the ultrasonic wave. machine. Comprising a switching means for selectively switching the display depth,
The probe application software automatically changes the setting to the frequency, focal length, or number of sound rays included in the setting information according to the display depth selected by the switching unit. The medical device according to claim 10.

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