JP2010082317A - Portable x-ray apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a portable X-ray apparatus which can prevent unauthorized movement and imaging by an ineligible in manipulation. <P>SOLUTION: The portable X-ray apparatus includes a wagon-driving portion 15 which drives a movable wagon, an input portion 12 which receives input of conditions of at least drive and imaging, a control portion 13 which controls the wagon-driving portion 15 based on the conditions of drive as well as imaging based on the conditions of imaging, and a start-up means 11 which starts power supply to each portion including the control portion 13 and input portion 12. The apparatus further includes a permitting portion 14 which sends permitting signals to the control portion 13 when power is supplied to each portion by manipulation of the start-up means 11 and prescribed authentication information of an operator is input through the input portion 12. Only when the permitting signals are sent, the wagon-driving portion 15 and imaging can be controlled by the control portion 13. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a mobile X-ray imaging apparatus for performing X-ray imaging by moving to a general hospital room or intensive care unit in a hospital.

  The mobile X-ray imaging apparatus is an X-ray imaging apparatus that enables imaging at an arbitrary place in a hospital by providing a moving carriage, and moves to an X-ray imaging room due to serious injury, old age, and the like. It is used for imaging patients (subjects) who cannot. Known public X-ray imaging apparatuses include those described in Patent Documents 1 and 2, for example.

  Usually, a mobile X-ray apparatus is equipped with a key switch, and a doctor or radiographer (hereinafter referred to as “operation qualified person”) with specialized knowledge inserts an activation key into this key switch. As a result, the mobile X-ray imaging apparatus is ready to move and image.

By the way, in hospitals and the like, a plurality of qualified personnel share one mobile X-ray imaging apparatus. In many cases, the activation key is stored in a rack together with keys of other apparatuses, It is stored or possessed by an administrator, and is lent out to qualified personnel every time a picture is taken. This prevents a person who has no specialized knowledge (hereinafter referred to as “non-operation qualified person”) from using the mobile X-ray imaging apparatus without permission.
Japanese Patent Laid-Open No. 10-174684 JP 2006-296676 A

  However, under the activation key management system described above, there is a risk that an unqualified person may take the activation key from the rack without permission. In some cases, the activation key remains inserted in the apparatus in order to save the trouble of borrowing the activation key from the administrator each time shooting is performed. That is, in the conventional mobile X-ray imaging apparatus in which movement and imaging can be performed only by the activation key, it is difficult to accurately prevent an unqualified person from performing imaging or the like without permission.

  Accordingly, the present invention provides a mobile X-ray imaging apparatus that can prevent unauthorized movement and imaging by unauthorized persons even when activation key management is not properly performed. Let it be an issue.

  In order to solve the above-described problems, a mobile X-ray imaging apparatus according to the present invention includes a moving carriage, a carriage driving unit that assists the traveling of the moving carriage, and an input that accepts input of at least driving conditions and imaging conditions. A controller that controls the carriage drive unit based on the drive condition, and a controller that controls imaging based on the imaging condition, and an activation that starts power supply to each unit including the control unit and the input unit A mobile X-ray imaging apparatus that moves to the vicinity of the subject to be imaged by the moving carriage and images the subject, and operates the activation means to operate the power to each unit. When supply is started and a predetermined operator authentication information is input through the input unit, the control unit includes a permission unit that outputs a permission signal, and the permission signal is output. As long as the above Wherein the control of the carriage drive unit and the photographing by the control section is possible.

  According to this configuration, for example, even if the activation key is still inserted in the apparatus and the activation unit is operated without permission, control by the control unit is not performed unless predetermined operator authentication information is input. Therefore, it is possible to prevent a non-operational person from taking a picture or the like.

  Preferably, the mobile X-ray imaging apparatus further includes a storage unit that holds the driving condition and the imaging condition for each operation qualified person, and the operator recognition information is different for each operation qualified person, When a person inputs his / her operator recognition information, the driving condition and photographing condition of the person qualified for operation are sent from the storage unit to the control unit, and the cart driving unit and the photographing are sent to the driving unit. It is controlled based on the conditions and the photographing conditions.

  According to this configuration, not only can an operation-inappropriate person perform photographing without permission, but also when the operator authentication information is input, the control is automatically performed with the driving conditions and the image-capturing conditions suitable for the operation-appropriate person. Since this is done, it is possible to save the time and effort of inputting each condition and to perform shooting efficiently.

Specifically, the input unit of the mobile X-ray apparatus has a plurality of buttons, and the operator recognition information includes two or more button types selected in advance from the plurality of buttons. And the order in which the buttons are pressed.
Specifically, the input unit of the mobile X-ray imaging apparatus has a biometric information input unit that receives input of biometric information, and the operator recognition information is input via the biometric information input unit. What is necessary is just to use the said biometric information of the operation qualified person.

  In addition, the mobile X-ray imaging apparatus cuts off the power supply to each unit when the erroneous operator recognition information is continuously input a predetermined number of times regardless of the operating state of the activation unit. Can be done.

  In addition, the mobile X-ray imaging apparatus includes a warning unit that informs the person who has made the input and the people around it when the erroneous operator recognition information is continuously input a predetermined number of times. Furthermore, you may provide.

  According to the present invention, it is possible to provide a mobile X-ray imaging apparatus that can prevent unauthorized movement and imaging by unauthorized persons even when activation key management is not properly performed. it can. Further, according to the present invention, it is possible to omit the input of the driving condition and the photographing condition by each operation qualified person, so that the photographing can be performed efficiently.

  Hereinafter, preferred embodiments of a mobile X-ray imaging apparatus according to the present invention will be described with reference to the accompanying drawings.

  FIG. 1 shows an imaging state of the mobile X-ray imaging apparatus according to the first embodiment. As shown in this figure, the mobile X-ray imaging apparatus 1 is provided with a moving carriage 2, and the moving carriage 2 is provided with an X-ray tube support portion composed of a column 4 and an arm 5. . The column 4 is fixed to the carriage 2 so as to be able to turn. The arm 5 is attached so as to be movable up and down along the support column 4 and can be expanded and contracted in the horizontal direction. An X-ray tube 6 that irradiates the subject 100 on the bed 101 with X-rays is attached to the tip of the arm 5. The alignment of the X-ray tube 6 is performed by appropriately adjusting the turning amount of the support column 4, the expansion / contraction amount and the vertical movement amount of the arm 5.

  The mobile X-ray imaging apparatus 1 further includes a flat panel X-ray detector 7. When imaging is performed, the X-ray detector 7 is disposed on the opposite side of the X-ray tube 6 with the subject 100 interposed therebetween. When X-rays are irradiated from the X-ray tube 6, the X-ray detector 7 detects the X-rays that have passed through the subject 100 and converts them into appropriate electrical signals.

  The moving carriage 2 is provided with a turnable front wheel 3a composed of a pair of casters and a non-steerable rear wheel 3b driven by a carriage drive unit (for example, a motor) 15, and the moving handle 8 is operated back and forth. As a result, the mobile X-ray imaging apparatus 1 moves forward or backward. At this time, since the rear wheel 3b is assisted by the driving force of the carriage drive unit 15, a large force is not required to move the mobile X-ray imaging apparatus 1.

  FIG. 2 shows the mobile X-ray imaging apparatus 1 shown in FIG. 1 as viewed from the viewpoint of the operator (in the direction of the arrow X). The display unit 10 in this embodiment is a liquid crystal display, and displays an X-ray image obtained by photographing and various messages to the operator. The activation means 11 is a key switch, which is turned on when an operator inserts an activation key (not shown) and rotates it clockwise, and power from the battery is supplied to each part.

  The input unit 12 has a plurality of buttons, through which imaging conditions and driving conditions are input. Here, the imaging conditions include a tube current value, a tube voltage value, an X-ray irradiation time, and the like. Further, the driving conditions include a driving force (assist force of the rear wheel 3b) generated by the carriage driving unit 15 when the mobile X-ray imaging apparatus 1 is moved. By setting the driving force to be high, the operator can move the mobile X-ray imaging apparatus 1 by applying a slight force to the moving handle 8.

  FIG. 3 is a block diagram illustrating a configuration of a main part of the mobile X-ray imaging apparatus 1 according to the present embodiment. As shown in this figure, the mobile X-ray imaging apparatus 1 includes a control unit 13 and a permission unit 14 in addition to those described with reference to FIGS. 1 and 2. Among them, the permission unit 14 determines whether the activation unit 11 is ON and predetermined operator authentication information (described later) is input via the input unit 12. When it is determined that both conditions are satisfied, a permission signal is output from the permission unit 14 to the control unit 13. On the other hand, the control unit 13 controls the cart driving unit 15 and the X-ray tube 6 based on the driving conditions and the imaging conditions only when the permission signal is output. The display unit 10 displays an X-ray image generated by the control unit 13 based on the electrical signal obtained by the X-ray detector 7.

  That is, in the mobile X-ray imaging apparatus 1 according to the present embodiment, movement and imaging can be performed only when the activation unit 11 is turned on and predetermined operator authentication information is input via the input unit 12. It becomes. Therefore, even if the activation key is not properly managed and the activation means 11 is turned on without permission by an unqualified operation person, photographing or the like is not performed.

  FIG. 4 shows this in a flowchart. When the activation unit 11 is turned on by the operator (“Yes” in S1-1), power supply from the battery is started to each unit (S1-2), and a message that prompts the display unit 10 to input a command is displayed. It is displayed (S1-3). The command input is performed by pressing predetermined buttons among the plurality of buttons of the input unit 12 in a predetermined order. In addition, the command is previously known only to those who are qualified for operation. In this embodiment, this command corresponds to the operator authentication information, and it is determined whether or not the person who has input the command is an operation qualified person by determining whether or not the input command is correct. .

  Specifically, when any command is input (“Yes” in S1-4), the permission unit 14 determines whether the command is correct (S1-5). When it is determined that the command is correct (“Yes” in S1-5), a permission signal is output from the permission unit 14 to the control unit 13 (S1-6). As a result, the mobile X-ray imaging apparatus 1 is ready for imaging.

On the other hand, when it is determined that the command is incorrect (“No” in S1-5), “1” is added to the erroneous input variable N (S1-8), and then the erroneous input variable N after the addition is added. The magnitude of the erroneous input allowable variable N _max (initial value is “3”) is compared (S1-9). If the erroneous input variable N is less than the erroneous input allowable variable N _max (“Yes” in S1-9), the process returns to S1-3 to give an opportunity for command re-input. On the other hand, when the erroneous input variable N has reached the erroneous input allowable variable N _max (“No” in S1-9), the power supply from the battery to each part is shut off regardless of whether the starter 11 is turned on or off ( S1-10), the erroneous input allowable variable N _max is changed to “1” (S1-11). Eventually, in this case, since a predetermined command (operator authentication information) has not been input, shooting or the like cannot be performed.

After that, when the starting means 11 is once turned off and then turned on again ("Yes" in S1-1), the command can be input again. However, since the erroneous input allowable variable N _max is changed to “1”, if the command input fails even once, the power supply is cut off (S1-10). The erroneous input allowable variable N _max returns to “3” when a predetermined command is input (S1-7).

Summarizing the above, in this embodiment, photographing or the like becomes possible only when the activation means 11 is turned on and a predetermined command is input via the input unit 12. Therefore, even if the activation key is not properly managed and the activation means 11 is turned on without permission by an unqualified operation person, photographing or the like is not performed.
Further, in this embodiment, since command input is performed via the input unit 12 that has been conventionally provided for inputting imaging conditions and the like, the conventional mobile X-ray is hardly required with little hardware change. The present invention can be applied to a photographing apparatus.

  In the mobile X-ray imaging apparatus according to the second embodiment, a different command (operator authentication information) is assigned to each operation qualified person. Thus, when a command is input, it is possible to determine whether or not the person who has input the command is an operation-qualified person, and it is possible to identify which operation-qualified person is going to perform photographing.

  Further, as shown in FIG. 5A, the mobile X-ray imaging apparatus according to the present embodiment further includes a storage unit 16. The storage unit 16 is composed of, for example, a semiconductor memory such as a flash memory or a magnetic disk device, and has drive conditions (such as preferred assist force) and photographing conditions (parts where photographing is often performed, tube current values, etc.) for each operation qualified person. Pre-input and held. Since other configurations are the same as those of the mobile X-ray imaging apparatus according to the first embodiment, description thereof is omitted here.

  Next, a flow until photographing is permitted will be described with reference to FIG. In the following description, it is assumed that the operation qualified person A among the three operation qualified persons A to C inputs a command. In addition, it is assumed that the storage unit 16 holds the driving conditions and photographing conditions of the operation qualified persons A to C.

  When the correct command assigned to himself / herself is input by the operation qualified person A (“Yes” in S2-4), the permission unit 14 determines that the command is correct (“Yes” in S2-5). Further, it is specified that the person who has input from the input command is the operation qualified person A (S2-6). Then, in response to this identification result, the drive condition and photographing condition of the operation qualified person A are output from the storage unit 16 to the control unit 13, and the permission signal is output from the permission unit 14 to the control unit 13 (S2-). 7). As a result, the mobile X-ray imaging apparatus is in a state in which imaging or the like is possible based on each condition held in the storage unit 16.

  That is, in this embodiment, it is not necessary to input driving conditions and imaging conditions suitable for each time an operation-qualified person wants to perform imaging, etc., so that it moves quickly to the subject and efficiently. Shooting can be performed.

  As shown in FIG. 6A, the mobile X-ray imaging apparatus according to the third embodiment further includes a warning unit 17 that gives a predetermined warning in response to an instruction from the permission unit 14. As the warning unit 17, a warning light, a buzzer, or the like can be applied. Since other configurations are the same as those of the mobile X-ray imaging apparatus according to the second embodiment, description thereof is omitted here.

In this embodiment, when the erroneous input variable N reaches the erroneous input allowable variable N _max (“No” in S3-10 in FIG. 6B), the power supply from the battery to each unit is cut off, and the warning unit A predetermined warning by 17 is performed (S3-11). As a result, not only the person who has entered the command but also those who are in the vicinity are informed that the wrong command has been continuously input, thereby preventing unauthorized use of the mobile X-ray imaging apparatus. it can.

  As illustrated in FIG. 7A, the input unit 12 of the mobile X-ray imaging apparatus according to the fourth embodiment includes a biological information input unit 12a that receives input of biological information. As biometric information, for example, fingerprints, vein patterns, iris patterns, and the like can be used. Since other configurations are the same as those of the mobile X-ray imaging apparatus according to the first embodiment, description thereof is omitted here.

  In this embodiment, when the activation unit 11 is turned on and power is supplied to each unit (S4-2 in FIG. 7B), the display unit 10 is prompted to input biometric information (for example, fingerprint authentication). Is displayed (S4-3). When fingerprint authentication is performed via the biometric information input unit 12a (“Yes” in S4-5), it is determined whether or not the fingerprint matches the fingerprint of the qualified person (S4-5). . That is, in this embodiment, the biological information of the operator is handled as the operator authentication information.

  When the input fingerprint matches the fingerprint of the person qualified for operation (“Yes” in S4-5), a permission signal is output from the permission unit 14 to the control unit 13 (S4-6), and photographing is possible It becomes. On the other hand, if the fingerprints do not match (“No” in S4-5), a message to that effect is displayed on the display unit 10 (S4-7), and the battery is connected to each unit regardless of whether the activation means 11 is ON / OFF. The power supply is cut off (S4-8).

  In summary, in this embodiment, it is determined whether or not to permit photographing or the like using the biological information of the operator instead of inputting the command. Therefore, according to the mobile X-ray imaging apparatus according to the present embodiment, it is possible to more reliably prevent the imaging and the like from being performed without permission by an unqualified operation person.

The preferred embodiments of the mobile X-ray imaging apparatus according to the present invention have been described above, but the present invention is not limited to these configurations.
For example, the input of the operator authentication information is not limited to the above-described command input and biometric authentication, and may be performed by reading an ID card possessed by each operation qualified person.
In the first to third embodiments, it is only necessary to input a predetermined command within three times (= the initial value of the erroneous input allowable variable N _max ). However, when an incorrect command is input, power supply to each unit may be cut off. On the other hand, in the fourth embodiment, if fingerprint authentication fails even once, the power supply to each unit is cut off. However, as in the first to third embodiments, there is an opportunity for re-authentication a predetermined number of times. It may be given.

It is a figure which shows the use condition of the mobile X-ray imaging apparatus which concerns on each Example. It is the figure which looked at the mobile X-ray imaging apparatus shown in FIG. 1 from an operator's viewpoint. 1 is a block diagram illustrating a configuration of a main part of a mobile X-ray imaging apparatus diagram according to Embodiment 1. FIG. 3 is a flowchart illustrating a flow until imaging is permitted in the mobile X-ray imaging apparatus according to the first embodiment. FIG. 6 is a diagram according to the second embodiment, where (A) is a block diagram illustrating a configuration of a main part of the mobile X-ray imaging apparatus, and (B) is a flowchart illustrating a flow until imaging is permitted. FIG. 9 is a diagram according to the third embodiment, where (A) is a block diagram illustrating a configuration of a main part of the mobile X-ray imaging apparatus, and (B) is a flowchart illustrating a flow until imaging is permitted. FIG. 6 is a diagram according to the fourth embodiment, where (A) is a block diagram illustrating a configuration of a main part of the mobile X-ray imaging apparatus, and (B) is a flowchart illustrating a flow until imaging is permitted.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Mobile X-ray imaging apparatus 2 Carriage 3a Front wheel 3b Rear wheel 4 Post 5 Arm 6 X-ray tube 7 X-ray detector 8 Moving handle 10 Display part 11 Starting means 12 Input part 12a Biological information input part 13 Control part 14 permission unit 15 cart driving unit 16 storage unit 17 warning unit 100 subject 101 bed

Claims (6)

A moving cart; a cart driving unit that assists the traveling of the moving cart; an input unit that receives at least input of driving conditions and imaging conditions; and controlling the cart driving unit based on the driving conditions, and the imaging A control unit that controls imaging based on conditions; and an activation unit that starts power supply to each unit including the control unit and the input unit, and moves to the vicinity of the subject to be imaged by the moving carriage. A mobile X-ray imaging apparatus for imaging the subject,
A permission unit that outputs a permission signal to the control unit when the activation unit is operated and power supply to each unit is started and predetermined operator authentication information is input via the input unit With
Only when the permission signal is output, the control unit can control the cart driving unit and the imaging. A storage unit that holds the driving conditions and the imaging conditions for each operation qualified person is further provided,
The operator recognition information is different for each operation qualified person,
When an operation-qualified person inputs his / her operator recognition information, the drive condition and shooting conditions of the operation-qualified person are sent from the storage unit to the control unit,
The mobile X-ray imaging apparatus according to claim 1, wherein the carriage driving unit and the imaging are controlled based on the driving conditions and the imaging conditions that are sent. The input unit has a plurality of buttons,
The operator recognition information includes two or more button types selected in advance from the plurality of buttons and an order of pressing the buttons. The mobile X-ray imaging apparatus described. The input unit has a biometric information input unit that accepts input of biometric information,
The mobile X-ray imaging apparatus according to claim 1, wherein the operator recognition information is the biological information of an operation-qualified person input via the biological information input unit.   The power supply to each unit is cut off when the erroneous operator recognition information is continuously input a predetermined number of times regardless of the operating state of the activation unit. The mobile X-ray imaging apparatus according to claim 4.   2. The information processing apparatus according to claim 1, further comprising: a warning unit for notifying a person who has made the input and surrounding persons when the erroneous operator recognition information is continuously input a predetermined number of times. The mobile X-ray imaging apparatus according to claim 5.

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