JP2003126082A - Data communications system and medical diagnostic apparatus using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve diagnostic efficiency in a X-ray CT unit by easily identifying where a failure has occurred and what has caused the error, even when a nonreproducible error occurs. SOLUTION: This data communications system, comprising a plurality of control units having at least one CPU, in which each control unit performs the mutual data transmission with others in the multi-CPU system to make a desired performance in a coordinated fashion, and is united together, is provided with a first recording means placed in every control unit for recording the information input to or output from the corresponding control unit and a second recording means for obtaining and recording the input or output information one after another which has been directly recorded by the first recording means.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a medical diagnostic apparatus and, more particularly, to a technique effectively applied to verification and failure analysis when an error occurs during a measurement sequence in a multi-CPU system such as an X-ray CT apparatus. Is.

[0002]

2. Description of the Related Art A conventional X-ray CT apparatus is provided with a table device for placing an object in an examination room and a scanner for rotationally photographing an X-ray image around the object, and is adjacent to the examination room. An operation console, an image processing unit (IPU), and an image display unit are arranged in the operation room. The scanner, table device, console, and image processing device are each 1
Or a CPU with multiple CPUs (central processing unit)
The units are configured and each unit cooperates with X
It has become a multi-CPU system that operates as a line CT device. The CPU units arranged in the examination room and the operation room, which are relatively distant from each other, exchanged control data, measurement data, and the like by serial communication.

In particular, the scanner controls the tilt angle of the scanner body, the scanner control CPU for controlling the irradiation of the X-ray beam and the X-ray imaging, and the rotation of the rotary plate on which the X-ray source and the X-ray detector are arranged. Rotating plate control CPU for controlling and communication control CPU for performing serial communication with the IPU arranged in the adjacent room
It was equipped with. A table control CPU that controls the table device is also connected to the communication control CPU.

[0004]

The present inventor has found the following problems as a result of examining the above-mentioned prior art. In the conventional X-ray CT apparatus, the scanner control CPU, the rotary plate control CPU, and the table control CPU have a function of monitoring the operation of the mechanism controlled by each control CPU. When each control CPU detects an abnormality, the control CPU sends status information indicating the state of the abnormality occurrence section to the communication control CPU.
The IPU stores the status information as an error log.

However, when an abnormality occurs in one of the control CPUs due to the influence of external noise, etc., and the control CPU does not operate as in the case where a system error occurs, the control CPU having the abnormality communicates. Control CPU
There was a problem that it became a so-called danmari state that the status response to could not be sent. For this reason, the control C stopped operating from the communication control CPU
When a status request is issued to the PU, this control CPU cannot respond to the status request, so the communication control CPU recognizes that a communication error has occurred with the control CPU that has stopped operating, and the communication error to the IPU side. Was transmitted as status information.

In addition, when an abnormality occurs in the communication control CPU and the communication control CPU stops operating, the communication control CP
Since the U cannot respond to the status request, the IPU recognizes that a communication error has occurred with the communication control CPU and uses the communication error as status information.

As described above, in the conventional X-ray CT apparatus, when an abnormality occurs in which the CPU does not operate in each control CPU and communication control CPU, the IPU side processes all as errors relating to communication. Since it was
There is a problem that it is not possible to specify the control location where the abnormality has occurred and the essential cause of the abnormality such as the measurement state when the abnormality has occurred. For this reason, it takes a lot of time to reproduce the error and to identify the abnormal portion, so that there is a problem that the diagnosis efficiency is reduced.

An object of the present invention is to provide a technique capable of easily identifying a failure location.

Another object of the present invention is to provide a technique capable of identifying the cause of a non-reproducible error even if it occurs.

Another object of the present invention is to provide a technique capable of improving diagnosis efficiency.

Another object of the present invention is to control C due to a bug or the like in the development process of the control program of each control CPU.
It is to provide a technique capable of detecting a malfunction of a PU (freezing, etc.).

The above and other objects and novel features of the present invention will be apparent from the description of this specification and the accompanying drawings.

[0013]

Among the inventions disclosed in the present application, a brief description will be given to the outline of typical ones.
It is as follows.

(1) Information is transmitted between control units of a multi-CPU system which is composed of a plurality of control units having at least one CPU, and which performs the desired operation in cooperation with each other. In a data communication system in which control units are combined, a first recording unit that is arranged for each control unit and records information input to and output from each control unit; and an input unit directly recorded from the first recording unit. The second recording means for obtaining and sequentially recording the output information is provided.

(2) The data communication system according to (1) above includes means for analyzing the input / output information recorded in the second recording means.

(3) Collecting means for collecting the image information of the measuring object, and controlling the collecting means based on the collecting condition inputted from the operator console to generate the diagnostic image of the measuring object from the obtained image information. Image collecting means for displaying on the display means, and communication means for transmitting information between the collecting means and the image processing means to couple the collecting means with the image processing means, and the collecting means, In the medical diagnostic apparatus in which the image processing means operates in cooperation with each other, first recording means for recording information input / output to and from the collecting means and the image processing means, and directly from the first recording means. A second recording means for obtaining the recorded input / output information and sequentially recording the information is provided.

(4) The medical diagnostic apparatus according to (3) above has means for analyzing the input / output information recorded in the second recording means.

According to the above-mentioned means, the first recording means is arranged for each control unit constituting the multi-CPU system, and the first recording means records the information input / output to / from each control unit. The input / output information recorded directly from the first recording means is obtained, and the second recording means sequentially records the same information. Therefore, the operating state of the multi-CPU system can be monitored by analyzing the input / output information for each control unit recorded in the second recording means by the analyzing means. The location can be easily specified. In particular, since the input / output information between the control units is recorded, even if a non-reproducible error caused by the input / output information occurs, it can be easily specified.

Therefore, the collecting means for collecting the image information of the measuring object and the displaying means for generating the diagnostic image of the measuring object from the image information obtained by controlling the collecting means based on the collecting condition inputted from the console. And image processing means for displaying the information, and communication means for transmitting information between the collecting means and the image processing means to couple the collecting means and the image processing means, and the collecting means and the image processing means cooperate with each other. Multi-C that works by
By applying to a medical diagnostic apparatus adopting the PU system configuration, the second recording means directly records the first recording means for recording information input / output to / from the collecting means and the image processing means. Since the input / output information recorded in the means is obtained and sequentially recorded, the operation of the multi-CPU system is performed by analyzing the input / output information of the collecting means and the image processing means recorded in the second recording means by the analyzing means. The condition can be monitored. Therefore, even if a failure occurs in the medical diagnostic apparatus, the failure location can be easily specified. As a result, the diagnosis efficiency can be improved. Further, it is possible to detect a malfunction (freezing, etc.) of the control CPU due to a bug or the like in the development process of the control program of the medical diagnostic apparatus.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail with reference to the drawings together with an embodiment (example) of the invention. In all the drawings for explaining the embodiments of the invention, components having the same function are designated by the same reference numeral, and the repeated description thereof will be omitted.

FIG. 1 is a diagram for explaining a schematic configuration of an X-ray CT apparatus which is a medical diagnostic apparatus using a data communication system according to an embodiment of the present invention. However, in order to simplify the description, the X-ray CT apparatus shown in FIG. 1 is a magnetic disk device connected to each data bus 106, 110, 114, 116, 132, a semiconductor memory serving as a working memory, and various types. For the control interface etc.,
Since well-known ones are used, description thereof will be omitted. In the present embodiment, the control unit of the table device (not shown) is arranged in the scanner 102, but it goes without saying that the control unit of the table device may be arranged in the table device.

In FIG. 1, 101 is an image processing apparatus and 1
Reference numeral 02 is a scanner, 103 is an error analysis unit, 104 is an image processing CPU, 105 is a first common memory, 106, 1
10, 114, 116, 132 are data buses, 107,
108, 118, 119, 123 to 126 are connectors,
109 is a second common memory, 111 is a communication control CPU,
112 is a scanner control CPU, 113 is a fourth common memory, 115 is a table control CPU, 117 is a third common memory, 120, 121, 122, 133 are signal lines, 1
27 is a 4'common memory, 128 is a 3'common memory, 129 is a 2'common memory, 130 is a 1'common memory, 131 is an error analysis CPU, and 134 is a serial signal line.

As shown in FIG. 1, the X-ray CT of the embodiment
The apparatus is configured such that a table device (not shown) on which a subject (not shown) is placed and a scanner 102 that rotates and takes an X-ray image around the subject are arranged in an examination room. An image processing unit (IPU) 101 having a display device and an error analysis means 103 for analyzing an abnormality (error) occur are arranged in an operation room adjacent to the examination room. However, also in the X-ray CT apparatus of the present embodiment, the image processing control CPU 104 of the image processing apparatus 101 and the communication control CPU of the scanner 102
111 is configured to exchange control data, measurement data, etc. by serial communication such as the well-known RS232C via the serial signal line 134.

The image processing apparatus 101 selects a motion condition required for rotational imaging from the measurement condition input from a console (not shown) and transfers it to the scanner 102, and reconstructs it from the X-ray image obtained by the measurement. The image processing control CPU 104 is configured to realize each unit such as a unit for controlling the operation of an image processing unit such as a dedicated arithmetic unit for generating an image. However, the operating conditions include, for example, the type of scan, the scan time, the slice thickness, the voltage value and current value supplied to the X-ray source that generates the X-ray beam, and the scanner 10.
There are two inclination angles, the movement amount of the table, the movement direction, the movement speed, and the like.

In particular, the image processing control CPU of this embodiment
A first common memory 105 is connected to a data bus 106 in the image processing apparatus 101. Operating conditions and communication control CPU 111 connects the first common memory 105 to the first common memory 105 via a serial communication line 134. The operation status of each unit, which is input as described above, is written for each setting or each communication. The details of writing the operating condition of each unit to the first common memory 105 will be described later.

The scanner 102 includes a communication control CPU 111 and a communication control CPU 11 for transmitting and receiving the operating conditions and the operating states of each unit via the serial signal line 134.
1 Scanner control CP that controls the imaging system based on the received operating conditions and monitors the operating state of the imaging system
The U112 and the communication control CPU 111 are configured to include a table control CPU 115 that controls the movement of the table device based on the received operating conditions and monitors the table position and the like.

The communication control CPU 111 is a second common memory 10 connected to the data bus 110 in the communication unit.
9, the operating condition of each unit input via the serial signal line 134 and the operating condition of each unit output from the communication control CPU 111 via the serial communication line 134 are written each time communication is performed.

Similarly, each time the scanner control CPU 112 inputs the operating conditions relating to the photographing system from the communication control CPU 111 to the fourth common memory 113 connected to the data bus 114 in the scanner control unit, the contents (input The operating condition of the image capturing system) is written, and the content (operating state of the scanner unit) is written every time the operating state of the scanner unit including the image capturing system is output to the communication control CPU 111. Also, the table control CPU 11
5 also stores the communication control CPU 1 in the third common memory 117 connected to the data bus 116 in the table control unit.
Every time the operating condition of the table is input from 11, the content (input operating condition) is written and the communication control C
The contents (table state and operation status) are written every time the table state and operation status are output to the PU 111.

Further, in the X-ray CT apparatus of this embodiment,
First common memory 105 and first 'common memory 130
Can be used in the same way as SRAM, for example, 2
It is a semiconductor device (semiconductor memory) including a 56-byte RAM (ESP-RAM) and an automatic communication circuit that works in conjunction with the RAM. Here, in this embodiment, two semiconductor memories are used as a pair, and the connectors 107 and 126 are used.
The terminals of the automatic communication circuits are connected to each other via the signal line 133 and the signal line 133. With such a configuration, the data having the same content as the data written in the first common memory 105, which is one of the semiconductor memories, is stored in the first common memory 13 that is the other semiconductor memory.
It is configured such that the data is written to the same address of 0 almost at the same time.

Similarly, the second common memory 109 and the second '
Common memory 129, third common memory 117 and third '
Common memory 128, and the fourth common memory 113 and the 4'th common memory 127 are also connected to the connectors 108, 108, respectively.
125, 119, 124, 119, 123 and the signal line 12
The data having the same contents as the data written in one of the semiconductor memories via 0, 122, and 121 are written to the same address of the other semiconductor memory in the pair almost at the same time.

On the other hand, the first to fourth'common memories 127 to
Since the respective 130 are configured to be connected to the data bus 132 of the error analysis means 103, they can be read from the error analysis CPU 131 connected to this data bus 132. Therefore, by the error analysis program running on the error analysis CPU 131, between the image processing control CPU 134 and the communication control CPU 11, between the communication control CPU 111 and the scanner control CPU 112, and between the communication control CPU 111 and the table control CPU 115, respectively. It becomes possible to grasp status information such as operation instructions and operation status to be communicated. The details of the error analysis by the error analysis unit 103 will be described later.

Next, FIG. 2 shows a diagram for explaining data transfer between the control units at the time of scan measurement of the X-ray CT apparatus according to the present embodiment. Hereinafter, the present embodiment will be described based on FIG. The operation of the data communication system of the embodiment will be described.
However, FIG. 2 shows the scanner control CPU 11 directly connected to the image processing control CPU 104 and the communication control CPU 111.
2 shows the data transferred between the scanner control CPU 112 and the scanner control CPU 112 and the rotary plate control CPU and the X-ray control CPU which are connected in parallel communication, for example. In addition to the recording of the transfer data in the common memory described below, like the conventional X-ray CT apparatus, when an error occurs, an error log is transferred to the image processing control CPU 104 and recorded. Has become.

When the measurement conditions are set from the operator console connected to the image processing apparatus, the image processing control CPU 104 of the image processing apparatus 101 first determines the operation condition required for rotation photographing from the measurement condition input from the operator console. select. Next, the image processing control CPU 104 transfers the selected operating condition as a measurement information parameter to the communication control CPU 111 of the scanner 102 in the examination room via the serial signal line 134 (step 201). At this time, the image processing control CPU
104 also transfers a measurement preparation command together with the measurement information parameter. Therefore, in the present embodiment, the measurement information parameter and the measurement preparation command are recorded in the first common memory 105. The information recorded in the first common memory 105 is transferred to the first 'common memory 13 via the signal line 133.
It is also stored in 0.

The communication control CPU 111, to which the measurement preparation command is transferred together with the measurement information parameter, transfers the transferred measurement information parameter and measurement preparation command to the scanner control CPU 112 and the table, for example, via a well-known dual port RAM (not shown). Control CPU 115
And transfer to. At this time, the communication control CPU 111 transfers parameters related to the table device among the measurement information parameters to the table control CPU 115 and transfers other parameters to the scanner control CPU 112, thereby reducing transfer of unnecessary data. There is. Communication control CP
By receiving the transfer of the measurement information parameter and the measurement preparation command by the U111 and the transfer to the scanner control CPU 112 and the table control CPU 115, the measurement information parameter input to the second common memory 109 via the serial signal line 134 is stored. The measurement preparation command is recorded, and each operation condition and measurement preparation command from the communication control CPU 111 to the scanner control CPU 112 and the table control CPU 115 are recorded. The information recorded in the second common memory 109 is the signal line 1
The data is immediately transferred to the second 'common memory 129 via 20, and the same information is recorded in the second' common memory 129.

The scanner control CPU 112 measures the operating conditions related to the rotating plate control such as the rotation start of the imaging system or the tube position setting, out of the operating condition parameters requested by the image processing apparatus 101 and the measurement preparation command. The information parameter and the measurement preparation command are transferred to the rotary plate control CPU connected in parallel (step 202). At this time, by the transfer acceptance of the measurement information parameter and the measurement preparation command by the scanner control CPU 112,
In the fourth common memory 113, operating condition parameters (measurement information parameters) transferred by the communication control CPU 111 to the scanner control CPU 112 and measurement preparation commands are recorded. Further, by transferring the measurement information parameter of the operating condition relating to the rotary plate control and the measurement preparation command to the rotary plate control CPU, the fourth common memory 113 stores the measurement information parameter of the operating condition relating to the rotary plate control and the measurement preparation. The commands and are recorded. The information recorded in the fourth common memory 113 is immediately transferred to the 4'th common memory 127 via the signal line 121 and the same information is recorded.

Further, the scanner control CPU 112 sends the measurement information parameter of the operating condition relating to the control of the X-ray irradiation such as the collimator setting and the measurement preparation command to the X-ray control CPU 112.
(Step 203). By this transfer, the 4th
In the common memory 113, the measurement information parameter of the operation condition related to the control of X-ray irradiation and the measurement preparation command are recorded. The information recorded in the fourth common memory 113 is immediately transferred to the 4'th common memory 127 via the signal line 121 and the same information is recorded.

After this, the scanner control CPU 112 currently checks whether or not the rotational speed of the rotary plate is stable or whether the rotary plate has rotated to the designated tube position after a preset time has elapsed. The status read which is a request for confirming the state of is transferred to the rotating plate control CPU (step 204). Also in this case, in the present embodiment, the information indicating that the status read is requested is the fourth information.
The contents recorded in the fourth common memory 113 are immediately transferred to the fourth ′ common memory 127 and recorded.

The rotary plate control CPU, to which the status lead is input, scans the rotation state of the rotary plate, which is determined based on the output from a rotation sensor (not shown), to the scanner control CPU 112.
(Step 205). Here, when the scanner control CPU 112 receives the rotation status from the rotary plate control CPU, the information indicating the rotation status is recorded in the fourth common memory 113 and the content recorded in the fourth common memory 113. Are immediately transferred to and recorded in the 4'th common memory 127.

Similarly, after the preset time has elapsed, the image processing control CPU 104 sends a status read to the communication control CPU in order to confirm whether or not the preparation for measurement is completed.
It is transferred to 111 (step 206). This status read is sent from the communication control CPU 111 to the scanner control CP.
The data is transferred to the U112 and the table control CPU 115, and the scanner control CPU 112 first transfers the status read to the rotating plate control CPU and the X-ray control CPU managed by the scanner control CPU 112 according to the status read (steps 207 and 208). However, also in the transfer of each status read in steps 206 to 208, the first to fourth common memories 105, 109, 113, 1
Since 17 is configured to record reception and transmission of status read, reception and transmission of status read are also recorded in the first to fourth common memories 127 to 130. .

Here, the rotating plate control CPU and the X-ray control CP
U is a response to the status read, and transfers the status of the rotating plate controlled by each control CPU and the position information of the collimator to the scanner control CPU 112 (steps 209 and 210). Upon receiving the response information, the scanner control CPU 112 sends the information to the communication control CPU 111.
Then, as a response of step 206 from the communication control CPU 111, the condition of the rotating plate and the position information of the collimator and the like are transferred to the image processing control CPU 104, and based on the transferred information, the image processing control CPU 104 A determination is made to the process (for example, measurement start) (step 21).
1). Also in the transfer of the control information in steps 209 to 211, similarly to the above, the first to fourth common memories 10
5, 109, 113, and 117 are configured to record reception and transmission of control information.
The reception and transmission of the status read are also recorded in the 4 ′ common memories 127 to 130.

Thereafter, main measurement by transfer of a measurement start command from the image processing control CPU 104, command transfer such as examination of measurement conditions, and exchange of commands and information between control CPUs until the end of measurement. All
First to fourth common memories 105, 109, 11 connected to the control CPU on the transfer side and the control CPU on the reception side
3, 117 and the first to fourth 'common memories 127 to 130
And record it.

At this time, the first to fourth 'common memories 12
7 to 130 are arranged in the error analysis means 103, the error analysis CPU 131 is the first to
By inspecting the information recorded in the common memory 4 ', it is possible to verify the operating state of each unit constituting the X-ray CT apparatus according to the present embodiment and the data exchange between the control units.

FIG. 3 is a diagram for explaining the procedure of the failure analysis processing when an error occurs in the X-ray CT apparatus according to the present embodiment. Hereinafter, based on FIG. 3, the error analysis means 1 will be described.
The error analysis procedure in 03 will be described. However, the analysis operation described below is realized by a program that operates in the error analysis CPU 131.

An error has occurred when starting this procedure. First,
The error analysis CPU 131 uses the first 'to 4'common memory 1
Recorded information such as status information of each control CPU, change time of this status, measurement conditions, and position information is read from 27 to 130 (step 301).

Next, the record information read by the error analysis CPU 131 is compared with the flow of the status during the normal sequence (sequence during normal operation) to specify at which position in the measurement sequence the error occurred. (Step 302). By this specific processing, the control unit in which the error has occurred, that is, the control CPU
Can be specified.

Next, it is confirmed whether or not this control CPU is operating normally by sending a preset status to the specified control CPU and performing processing such as requesting a response to this status. (Step 3
03).

If no response is obtained in step 303, the control CPU specified as the cause of the error
However, it can be determined that the vehicle is in a so-called runaway state in which the operation is different from the operation defined by the preset measurement program. Therefore, since noise may be mixed into the input line, which may be one of the causes, it is easy to conclude that a countermeasure against noise in the signal input line is necessary as a solution (step 304).

On the other hand, when a response is obtained in step 303, the wiring in the unit having the control CPU specified as the cause of the error is broken, the control target device is broken,
Also, since there is a possibility of abnormality in the monitoring sensor, etc., it is possible to identify the cause of the error by checking the disconnection of the wiring in the unit, the failure of the control target device, the monitoring sensor, etc. 305). That is, since the unit in which the error occurred can be specified,
The cause of the error can be easily specified.

As described above, the status information of each control CPU recorded in the first to fourth common memories 127 to 130 by the error analysis CPU 131, the change time of the status, the measurement condition, and the record information such as the position information. By reading out, it is possible to easily identify the cause of the error or the unit causing the error. For example, by accessing the error analysis CPU 131 from a remote place, the operation abnormality of the X-ray CT apparatus can be accurately identified from a remote place. It is also possible to make various diagnoses.

As described above, in the X-ray CT apparatus which is the medical diagnostic apparatus using the data communication system of this embodiment, the image processing CPU 104 and the communication control CPU 11 are provided.
1, scanner control CPU 112, table control CPU 1
The first common memory 105, the second common memory 109, the third common memory 117, or the fourth common memory 113, which serves as the first recording means, is arranged for each control unit having 15 or the like as the control means. , The first common memory 105, the second common memory 109, the third common memory 117, or the fourth common memory 113 records information input / output to / from a control unit in which each of them is arranged. The input / output information recorded in the common memory 105, the second common memory 109, the third common memory 117, or the fourth common memory 113 is used as the second recording unit of the first ′ common memory 130 and the first common memory 130. 2'common memory 129, 3 '
Common memory 128, or 4'common memory 12
It is configured to be sequentially recorded in 7.

Therefore, the first 'common memory 130, the second' common memory 129, the third 'common memory 128, or the fourth' common memory 127 which is the second recording means.
By analyzing the input / output information for each control unit recorded in, it is possible to monitor the operating state of the multi-CPU system, so even if a failure occurs and the control unit is damaged, the failure location can be easily identified. Can be specified. In particular, since the input / output information between the control units is recorded, even if a non-reproducible error caused by the input / output information occurs, it can be easily specified. As a result, even when a failure occurs in the X-ray CT apparatus, the failure location can be easily specified, and the diagnostic efficiency can be improved.

Further, it is possible to detect a malfunction (freezing, etc.) of the control CPU due to a bug in the process of developing the control program for the X-ray CT apparatus. In addition, although the case where the X-ray CT apparatus is used as the medical diagnostic apparatus using the data communication system has been described in the present embodiment, the present invention is not limited to this, and a multi-CPU in which a plurality of CPUs operate in cooperation with each other. It goes without saying that the present invention can also be applied to other medical diagnostic devices such as a circulatory system X-ray device, a digital radiography system, and an MRI system having a configuration.

As described above, the invention made by the present inventor is
Although the specific description has been given based on the embodiment of the invention, the invention is not limited to the embodiment of the invention and can be variously modified without departing from the scope of the invention. .

[0054]

The effects obtained by the typical ones of the inventions disclosed in the present application will be briefly described as follows.

(1) It is possible to easily specify the location of failure. (2) Even if a non-reproducible error occurs, its cause can be specified. (3) Even if a failure occurs and a danmari occurs in the control unit, the location of the failure can be easily specified. (4) The diagnostic efficiency can be improved. (5) It is possible to detect a malfunction (freezing, etc.) of the control CPU due to a bug or the like in the process of developing the control program of the medical diagnostic apparatus.

[Brief description of drawings]

FIG. 1 is a diagram for explaining a schematic configuration of an X-ray CT apparatus which is a medical diagnostic apparatus using a data communication system according to an embodiment of the present invention.

FIG. 2 is a diagram for explaining data transfer between control units during scan measurement of the X-ray CT apparatus according to the present embodiment.

FIG. 3 is a diagram for explaining a procedure of failure analysis processing when an error occurs in the X-ray CT apparatus according to the present embodiment.

[Explanation of symbols]

101 ... Image processing apparatus, 102 ... Scanner, 103 ... Error analysis means, 104 ... Image processing CPU, 105 ... First
Common memory, 106, 110, 114, 116, 13
2 ... Data bus, 107, 108, 118, 119, 1
23 to 126 ... Connector, 109 ... Second common memory,
111 ... Communication control CPU, 112 ... Scanner control CP
U, 113 ... Fourth common memory, 115 ... Table control CPU, 117 ... Third common memory, 120, 121,
122, 133 ... Signal lines, 127 ... 4'common memory, 128 ... 3'common memory, 129 ... 2'common memory, 130 ... 1'common memory, 131 ... Error analysis CPU, 134 … Serial signal line

Claims (4)

[Claims] 1. A control system comprising a plurality of control units each having at least one CPU, wherein the control units cooperatively perform desired operations, transmit information between the control units, and control the control units. In a data communication system in which units are combined, first recording means arranged for each control unit for recording information input / output to / from each control unit, and input / output directly recorded from the first recording means A data communication system, comprising: a second recording unit that obtains information and sequentially records the information. 2. The data communication system according to claim 1, further comprising means for analyzing the input / output information recorded in the second recording means. 3. A collecting means for collecting image information of a measuring object, and a diagnostic image of the measuring object is generated from the obtained image information by controlling the collecting means on the basis of a collecting condition inputted from a console. Image processing means to be displayed on the display means,
A communication unit that transmits information between the collecting unit and the image processing unit and couples the collecting unit with the image processing unit is provided, and the collecting unit and the image processing unit operate in cooperation with each other. In the medical diagnostic apparatus, first recording means for recording information input / output to / from the collecting means and the image processing means, and input / output information directly recorded from the first recording means, and sequentially recorded. And a second recording means for performing the medical diagnosis device. 4. The medical diagnostic apparatus according to claim 3, further comprising means for analyzing the input / output information recorded in the second recording means.