WO2019064671A1

WO2019064671A1 - Mobile radiation photographing apparatus

Info

Publication number: WO2019064671A1
Application number: PCT/JP2018/017557
Authority: WO
Inventors: 智晴奥野
Original assignee: 株式会社島津製作所
Priority date: 2017-09-27
Filing date: 2018-05-02
Publication date: 2019-04-04

Abstract

A control unit (30) is provided with: a map information creation unit (51) that creates map information including an area of a patient's room in a hospital; a map information storage unit (52) that stores the map information; a patient information storage unit (53) that acquires information of a patient from a hospital information system (100) and stores the information; a sleep mode control unit (54) that puts an apparatus in a sleep mode; a position recognition unit (55) that recognizes the present position by detecting the rotation amount of a rear wheel from the position of a charging station in the hospital; a determination unit (56) that determines whether or not the present position is in a patient's room on the basis of the recognized position information and the stored map information; and an operation switching unit (57) that switches operation of the apparatus when the determination unit (56) has determined that the present position is in the patient's room.

Description

Mobile radiography system

The present invention relates to a mobile radiation imaging apparatus for performing radiation imaging such as X-ray imaging.

A mobile X-ray imaging apparatus, which is a type of mobile radiography apparatus, is also referred to as a round-table X-ray imaging apparatus, and moves between hospital rooms to perform X-ray imaging. This mobile X-ray imaging apparatus is an arm that moves up and down along a support while supporting an X-ray irradiation unit including a main body having front and rear wheels, a support erected on the main body, and an X-ray tube and a collimator. And an X-ray detector for detecting an X-ray emitted from the X-ray irradiation unit and having passed through the subject, and a battery disposed inside the main body.

Such a mobile X-ray imaging apparatus includes a drive motor and a battery in a main body, and can be moved by power assist by driving the drive motor. Then, in order to prevent a collision with a person at the time of movement, an alarm sound is generated for alerting at the time of movement. In addition, the FPD as an X-ray detector is connected to the main body by wireless. In the mobile X-ray imaging apparatus, in order to reduce the power consumption of the battery by wireless connection with the FPD or to reduce the power consumption by the display unit of the main unit, the computer, etc. ing. Furthermore, in such a mobile X-ray imaging apparatus, a configuration is employed in which patient information acquired from a hospital information system is stored in the storage unit of the main body and is called up at the time of X-ray imaging.

In Patent Document 1, index information composed of any one of an IC tag, a magnetic medium, a reflection medium, image information, appearance information, code information and the like is installed in each place of a hospital, and index information acquired by an acquisition unit A mobile radiography apparatus is disclosed that performs control related to radiography in response. In the radiation imaging apparatus described in this patent document 1, when the mobile radiation imaging apparatus is disposed in a hospital room, the X-ray tube is switched to a state capable of generating X-rays, and the X-ray detector is The X-ray can be detected, and when the mobile radiation imaging apparatus is placed in a patient's room, the traveling speed of the truck is limited and the monitor is turned on. .

JP, 2015-100462, A

In the device described in Patent Document 1, it is necessary to set index information in all areas of the hospital where the device moves, and the device configuration becomes complicated. Further, in the device described in Patent Document 1, there is no recognition of patient information displayed in a patient's room.

The present invention has been made to solve the above problems, and it is determined whether the device is in a patient's room without newly installing a special index or the like, thereby displaying patient information, etc. An object of the present invention is to provide a mobile radiation imaging apparatus capable of switching control of the operation of the apparatus.

The invention according to claim 1 is a radiation irradiator, a main body having a wheel, a support mechanism disposed on the main body for supporting the radiation irradiator, and a battery disposed in the main body. The present invention is a mobile radiation imaging apparatus comprising a map information storage unit for storing map information including a region of a hospital room in a hospital, and a rotation amount of the wheel from a home position in the hospital to detect the present A determination unit that determines whether or not the current position is in the patient room based on a position recognition unit that recognizes a position, the position information recognized by the position recognition unit, and the map information stored in the map information storage unit And an operation switching unit configured to switch the operation of the apparatus when it is determined by the determination unit that the current position is in the patient room.

The invention according to claim 2 further comprises, in the invention according to claim 1, a display unit for displaying patient information, and a patient information storage unit for acquiring and storing patient information from a hospital information system, When the determination unit determines that the current position is in the patient room, the operation switching unit displays, on the display unit, information on a patient present in the patient room.

The invention according to claim 3 further comprises, in the invention according to claim 1, an alarm sound generation unit for generating an alarm sound when the apparatus is moved, wherein the operation switching unit is configured to control the current position by the determination unit. When it is determined that the room is indoors, the generation of the alarm sound is stopped or the volume of the alarm sound is reduced.

The invention according to claim 4 further includes a motor for driving the wheel according to the invention according to claim 1, and the operation switching unit is determined by the determination unit that the current position is in the patient room. Sometimes, the maximum speed or acceleration of the device driven by the motor is limited.

The invention according to claim 5 further comprises, in the invention according to claim 1, a sleep mode control unit for setting the device to a sleep mode when the device is not operated for a certain period of time, and the operation switching unit When it is determined that the current position is in the patient room, the device is returned from the sleep mode.

The invention according to a sixth aspect is the invention according to any one of the first to fifth aspects, wherein the hospital room in the hospital based on the amount of rotation of the wheel from the home position in the hospital and the operation of the device. The map information creating unit is further configured to create map information including the area of (1), and the map information storage unit stores the map information created by the map information creating unit.

The invention according to claim 7 is the invention according to claim 6, wherein the map information creation unit determines the area of the patient's room in the map information based on the operation of the support mechanism and the rotational operation of the wheel. Do.

According to the first aspect of the present invention, it is possible to determine whether or not the device is in the patient's room without newly installing a special index or the like, and thereby to control the operation of the device. Become.

According to the second aspect of the present invention, since the information on the patient existing in the patient's room is displayed on the display unit, the operator can easily select the information on the patient to be imaged next, and the workflow is determined. It is possible to improve.

According to the third aspect of the present invention, since the generation of the alarm sound in the patient room is stopped or the volume of the alarm sound is reduced, it is possible to reduce the discomfort given to the patient.

According to the fourth aspect of the present invention, since the maximum velocity or acceleration of the device in the patient room is limited, it is possible to reduce the risk of the device colliding with a patient, a bed or the like.

According to the fifth aspect of the present invention, since the device is returned from the sleep mode in the patient room, power consumption of the battery can be reduced outside the patient room, and X-ray imaging work can be performed in the patient room. It becomes possible to execute promptly.

According to the inventions of claims 6 and 7, the map information including the area of the hospital room in the hospital is automatically created based on the rotation amount of the wheel from the origin position in the hospital and the operation of the apparatus. It becomes possible.

FIG. 1 is a schematic side view of a mobile X-ray imaging apparatus 1 according to the present invention. 1 is a perspective view of a mobile X-ray imaging apparatus 1 according to the present invention. It is a circuit diagram explaining the main electric composition of mobile X-ray imaging device 1 concerning this invention. FIG. 2 is a block diagram showing a functional configuration of a control unit 30. It is an explanatory view showing typically creation operation of map information by mobile type X-ray imaging device 1 concerning this invention. 5 is a flowchart showing various operations involved in X-ray imaging by the mobile X-ray imaging apparatus 1 according to the present invention.

Hereinafter, embodiments of the present invention will be described based on the drawings. FIG. 1 is a schematic side view of a mobile X-ray imaging apparatus 1 as a mobile radiation imaging apparatus according to the present invention, and FIG. 2 is a perspective view thereof.

The mobile X-ray imaging apparatus 1 includes a support 14 disposed on the main body 15, an arm 13 disposed to be able to move up and down with respect to the support 14, and an X provided at the tip of the arm 13. An X-ray tube 16; a collimator 12 disposed below the X-ray tube 11; an X-ray detector 16 for detecting X-rays emitted from the X-ray tube 11 and having passed through the subject; And a storage unit 17 for storing the line detector 16. The X-ray tube 11 and the collimator 12 constitute a radiation irradiator according to the present invention.

The main body 15 is a movable carriage on which a pair of left and right front wheels 21 that are wheels for changing the direction and a pair of left and right rear wheels 22 that are wheels for driving are disposed. Ru. Further, in front of the main body 15, a bumper 24 for absorbing an impact when it collides with an obstacle in the traveling direction is disposed.

The arm 13 is capable of moving up and down between a fixed position at which the arm 13 is to be disposed when moving the main body 15 shown by a solid line in FIG. 1 and a photographing position elevated from the fixed position. When the arm 13 is in the fixed position, the lower surface of the arm 13 abuts on the fixed portion 18 called an arm catch. Further, as shown in FIG. 2, the arm 13 pivots in the θ3 direction in a state of being lifted from the fixed position by rotating the support column 14.

The collimator 12 is provided with a handle 26 used when moving the X-ray tube 11 and the collimator 12 as one. As shown in FIG. 2, the X-ray tube 11 and the collimator 12 attached to the X-ray tube 11 have a θ1 direction centered on an axis facing a direction perpendicular to the extending direction of the arm 13 and an arm 13 It is possible to swing in the θ2 direction around an axis facing the extending direction of.

Further, as shown in FIG. 2, the X-ray tube 11 and the collimator 12 are movable in the horizontal direction by the extension and contraction of the arm 13 in the A direction. Furthermore, as shown in FIG. 2, the X-ray tube 11 and the collimator 12 are movable in the vertical direction by raising and lowering the arm 13 in the Z direction with respect to the support 14.

The mobile X-ray imaging apparatus 1 includes an LCD touch panel 25 that functions as a display unit and an operation unit. The LCD touch panel 25 displays an operation switch for selecting an imaging condition and the like, an X-ray imaging image and the like.

FIG. 3 is a circuit diagram for explaining the main electrical configuration of the mobile X-ray imaging apparatus 1 according to the present invention.

The mobile X-ray imaging apparatus 1 includes a control unit 30 in the main body 15 for controlling the entire apparatus. The mobile X-ray imaging apparatus 1 further includes a battery 35 in the main body 15. The battery 35 can be connected to a charging station 37 equipped with a commercial power source through the charging circuit 36. The battery 35 connects a power cord provided to the main body 15 described later to an outlet of the charging station 37. Thus, the charging station 37 can be charged.

Of the pair of rear wheels 22 for driving the main body 15, the right rear wheel 22a is connected to the drive motor 34a via an encoder 33a. Similarly, the left rear wheel 22b is connected to the drive motor 34b via an encoder 33b. The

encoders

33a, 33b detect the rotation of the

rear wheels

22a, 22b. The

encoders

33a and 33b and the

drive motors

34a and 34b are connected to the control unit 30, and the control unit 30 drives based on the rotational speeds of the

rear wheels

22a and 22b detected by the

encoders

33a and 33b. The rotation control signal of the

motor

34a, 34b is transmitted.

Further, near the left and right ends of the operation handle 19 described above, a pair of sensors 31a and 31b for detecting the operation force applied to the operation handle 19 is disposed. Each of the sensors 31a and 31b has a configuration in which a lever is disposed between pressure sensors disposed in the front and rear direction, and forward or backward applied by the operator near the right end or the left end of the operation handle 19 To detect the operation force of the

The control unit 30 controls the rotation of the pair of

rear wheels

22a and 22b based on the signals of the sensors 31a and 31b. That is, when the sensor 31a in the vicinity of the right end of the operating handle 19 detects an operating force to the front, the control unit 30 transmits a signal to rotate the rear wheel 22a forward to the driving motor 34a. When the sensor 31a in the vicinity detects a rearward operation force, the control unit 30 transmits a signal to reverse the rear wheel 22a to the drive motor 34a. Similarly, when the sensor 31b in the vicinity of the left end of the operating handle 19 detects an operating force to the front, the control unit 30 transmits a signal to cause the rear wheel 22b to rotate forward to the driving motor 34b. When the sensor 31b in the vicinity of the left end detects an operation force to the rear, the control unit 30 transmits a signal to reverse the rear wheel 22b to the drive motor 34b. The signal from the control unit 30 at this time is a signal such that the rotational speeds of the

drive motors

34 a and 34 b are proportional to the magnitude of the operating force applied to the operating handle 19. Therefore, the mobile X-ray imaging apparatus 1 advances in the operation direction according to the operation force applied to the operation handle 19 by the operator. The rotational speeds and rotational directions of the

rear wheels

22a and 22b are detected by the

encoders

33a and 33b.

As shown in this figure, the control unit 30 is connected to a transmission / reception unit 41 for performing radio transmission / reception with the X-ray detector 16. In addition, a speaker 23 as an alarm sound generation unit for generating an alarm sound when the apparatus is moved is connected to the control unit 30. Further, the LCD touch panel 25 described above is connected to the control unit 30. Furthermore, although the connection state is not shown in this figure, the LCD touch panel 25 and the transmission / reception unit 41 described above are connected to the battery 35 and receive power supply from the battery 35.

FIG. 4 is a block diagram showing a functional configuration of the control unit 30 described above.

The control unit 30 is configured of a computer in which software is installed. The functions of the units included in the control unit 30 are realized by executing software installed in a computer. The control unit 30 is connected to a hospital information system (Hospital Information Systems) 100 via in-hospital wireless communication and the like, and various information including patient information and imaging information from the hospital information system 100 get. The control unit 30 creates a map information creation unit 51 that creates map information including the area of the sickroom 2 in the hospital, a map information storage unit 52 that stores the map information created by the map information creation unit 51, and a hospital information system Patient information storage unit 53 for acquiring and storing patient information from 100, sleep mode control unit 54 for putting the device into sleep mode when the device is not operated for a certain period of time, and rear wheels from the position of the charging station 37 in the hospital The position recognition unit 55 that recognizes the current position in the hospital by detecting the rotation amounts of 22a and 22b, and the current position information based on the position information recognized by the position recognition unit 55 and the map information stored in the map information storage unit 52 A determination unit 56 that determines whether the position is in the patient's room 2 and a device when it is determined by the determination unit 56 that the current position is in the patient's room 2 It includes an operation switching unit 57 for switching the operation, the.

Next, an operation of creating map information by the mobile X-ray imaging apparatus 1 having the above-described configuration and various operations involved in X-ray imaging will be described. First, the operation of creating map information will be described. FIG. 5 is an explanatory view schematically showing an operation of creating map information by the mobile X-ray imaging apparatus 1 according to the present invention.

In the explanatory view schematically shown in FIG. 5, in the hospital room 2 in contact with the corridor 3, a bed 4 of 4 beds is installed, and 4 patients M are treated. A charging station 37 equipped with a commercial power source for charging the battery 35 of the mobile X-ray imaging apparatus 1 is installed at a position away from the sick room 2 in the corridor 3. The position is the origin position when the mobile X-ray imaging apparatus 1 moves in the hospital.

When creating map information, the mobile X-ray imaging apparatus 1 which has been charged at the charging station 37 is moved in the hospital including the patient room 2. The current position of the mobile X-ray imaging apparatus 1 during movement is recognized by integrating the amount of rotation of the

rear wheels

22a and 22b detected by the control unit 30 by the

encoders

33a and 33b. Then, based on the movement trajectory of the mobile X-ray imaging apparatus 1, map information is created. In this map information, the area of the sickroom 2 is defined.

When defining the area of the patient's room 2, the arm 13 as a support mechanism for supporting the radiation irradiating section composed of the X-ray tube 11 and the collimator 12 is shown in FIG. When the control unit 30 recognizes that the imaging position shown by the phantom line has been raised, the position is detected as the room 2. Further, in addition to the raising and lowering operation of the arm 13, as shown by a broken arrow in FIG. 5, an area in which the turning or turning of the device is repeated, an area in which the movement of the device is repeated, or a stop of the device The area in which the operation is performed is defined as the area of the room 2. The definition of the sick room 2 may be performed at the time of installation of the device, or may be performed concurrently with the operation of the device.

In this manner, map information including the area of the patient's room 2 is created based on the movement trajectory of the mobile X-ray imaging apparatus 1. The creation of the map information is performed by the map information creation unit 51 in the control unit 30. Then, the created map information is stored in the map information storage unit 52 in the control unit 30.

The map information may be created using a plan view or the like of the hospital instead of creating the map information according to the process described above. In this case, map information including information on the area of the sickroom 2 may be obtained, or the area of the sickroom 2 may be specified by the above-described operation from the plan view of the sickroom 2. Also in these cases, the map information is stored in the map information storage unit 52 in the control unit 30.

Next, various operations involved in X-ray imaging by the mobile X-ray imaging apparatus 1 according to the present invention will be described. FIG. 6 is a flowchart showing various operations involved in X-ray imaging by the mobile X-ray imaging apparatus 1 according to the present invention.

Prior to X-ray imaging, the control unit 30 acquires information on the patient M from the hospital information system 100, and the patient information storage unit 53 stores the patient information. The patient information includes the name of the patient who is present in each of the patient's rooms 2 and the imaging information including the imaging region and imaging technique when imaging the patient M.

In this state, when the mobile X-ray imaging apparatus 1 according to the present invention is moved to perform X-ray imaging in the patient's room 2, the position recognition unit 55 starts from the position of the charging station 37 as an origin position in the hospital. The current position in the hospital is recognized by detecting the amount of rotation of the

rear wheels

22a and 22b (step S1). Then, based on the position information recognized by the position recognition unit 55 and the map information stored in the map information storage unit 52, the determination unit 56 determines whether the current position is in the patient's room 2 (step S2). .

When it is determined that the current position is in the patient's room 2, the operation switching unit 57 executes various operations for switching the operation of the apparatus.

That is, when it is determined that the current position is in the hospital room 2, the operation switching unit 57 displays the information on the patient M corresponding to the patient M in the hospital room 2 on the LCD touch panel 25 (step S3). The operator prepares for imaging based on the information of the patient M.

In addition, when it is determined that the current position is in the hospital room 2, the operation switching unit 57 stops the generation of the alarm sound for the volume of the alarm sound generated from the speaker 23, or reduces the volume of the alarm sound. To adjust (step S4). This makes it possible to reduce the discomfort given to the patient M in the hospital room 2.

When it is determined that the current position is in the patient's room 2, the operation switching unit 57 limits the maximum speed or acceleration of the device driven by the

drive motors

34a and 34b (step S5). This makes it possible to reduce the risk of the device colliding with the patient M, the bed or the like.

Furthermore, when it is determined that the current position is in the patient's room 2, the operation switching unit 57 transmits a signal to the sleep mode control unit 54, and returns the device from the sleep mode when the device is in the sleep mode. (Step S6). As a result, the power consumption of the battery 35 can be reduced outside the patient's room 2, and in the patient's room 2, the X-ray imaging operation can be performed promptly.

As described above, according to the mobile X-ray imaging apparatus 1 according to the present invention, the current position in the hospital is detected by detecting the amount of rotation of the

rear wheels

22a and 22b from the charging station 37 as the origin position in the hospital. When it is determined that the current position is in the patient room, the operation of the apparatus can be switched to a state where X-ray imaging can be performed safely and efficiently.

DESCRIPTION OF SYMBOLS 1 mobile X-ray imaging apparatus 2 hospital room 11 X-ray tube 12 collimator 13 arm 14 post 15 main body 16 X-ray detector 19 operation handle 21 front wheel 22 rear wheel 23 speaker 25 LCD touch panel 30 control part 33 encoder 34 drive motor 35 battery 36 charging circuit 37 charging station 41 transmitting / receiving unit 51 map information creating unit 52 map information storage unit 53 patient information storage unit 54 sleep mode control unit 55 position recognition unit 56 determination unit 57 operation switching unit 100 hospital information system M patient

Claims

Mobile radiation imaging apparatus comprising: a radiation irradiation unit; a main body having a wheel; a support mechanism disposed on the main body for supporting the radiation irradiation unit; and a battery disposed inside the main body In
A map information storage unit that stores map information including the area of a hospital room in a hospital;
A position recognition unit that recognizes the current position in the hospital by detecting the amount of rotation of the wheel from a home position in the hospital;
A determination unit that determines whether or not the current position is in the patient room based on the position information recognized by the position recognition unit and the map information stored in the map information storage unit;
An operation switching unit that switches the operation of the apparatus when it is determined by the determination unit that the current position is in the patient room;
A mobile type radiography apparatus comprising:
In the mobile radiation imaging apparatus according to claim 1,
A display unit for displaying patient information;
A patient information storage unit for acquiring and storing patient information from a hospital information system;
The mobile radiography apparatus, wherein the operation switching unit displays, on the display unit, information on a patient present in a patient's room when the judgment unit judges that the current position is the room.
In the mobile radiation imaging apparatus according to claim 1,
It further comprises an alarm sound generator that generates an alarm sound when the device moves.
The mobile radiation imaging apparatus, wherein the operation switching unit stops the generation of an alarm sound or reduces the volume of the alarm sound when the determination unit determines that the current position is in the patient room.
In the mobile radiation imaging apparatus according to claim 1,
The motor further comprises a motor for driving the wheel,
The operation switching unit limits the maximum speed or acceleration of the device by driving the motor when the determination unit determines that the current position is in the patient room.
In the mobile radiation imaging apparatus according to claim 1,
The device further comprises a sleep mode control unit that puts the device into sleep mode when the device is not operated for a fixed time.
The mobile radiation imaging apparatus, wherein the operation switching unit returns the device from the sleep mode when the determination unit determines that the current position is in the patient room.
The mobile radiation imaging apparatus according to any one of claims 1 to 5,
The system further comprises a map information creation unit that creates map information including the area of the hospital room in the hospital based on the amount of rotation of the wheel from the origin position in the hospital and the operation of the device,
The mobile radiation imaging apparatus, wherein the map information storage unit stores the map information created by the map information creation unit.
In the mobile radiation imaging apparatus according to claim 6,
The said map information creation part determines the area | region of the said sickroom in the said map information based on the operation | movement of the said support mechanism, and the rotation operation of the said wheel.