JP4349652B2 - X-ray equipment - Google Patents

Description

  The present invention relates to an X-ray apparatus. In particular, the present invention relates to an X-ray apparatus capable of setting imaging conditions even on the X-ray movable diaphragm side in a mobile X-ray apparatus.

  As an example of an X-ray apparatus, a mobile X-ray apparatus that makes a round trip in a hospital and performs X-ray imaging in a hospital room or the like is known (for example, Patent Document 1). FIG. 7 shows the appearance of this mobile X-ray apparatus.

  The X-ray apparatus includes a main body 1, an X-ray generation unit 2 that generates X-rays under the control of the main body 1, and an X-ray movable diaphragm 3 that adjusts an X-ray irradiation field. The main body 1 is fixed on the carriage 4, has a built-in motor (not shown) for driving the carriage 1, and includes an operation panel 1A for setting photographing conditions. The X-ray generator 2 has an X-ray tube (not shown) and generates X-rays according to the imaging conditions set on the operation panel 1A. The X-ray movable diaphragm 3 is mounted immediately below the X-ray generation unit 2 and is mounted on the column 6 through the arm 5 together with the X-ray generation unit 2. The X-ray generation unit 2 and the X-ray movable diaphragm 3 are moved to predetermined positions at the time of imaging by the rotation of the column 6, the elevation along the column 6, and the bending of the arm 5.

  In X-ray imaging, an appropriate cassette size is selected according to the imaging site, and the X-ray irradiation range is adjusted using an X-ray movable diaphragm so as not to give the patient excessive X-ray exposure. A general movable diaphragm includes a knob for adjusting an irradiation field, an illumination lamp for illuminating an X-ray irradiation range, an illumination switch for the lamp, and a timer circuit for lighting the illumination lamp for a predetermined time. Then, as shown in FIG. 8, the lamp 9, the illumination switch 36, the ground 10, and the timer circuit 11 are connected to the main body side via wiring drawn from each.

JP 2002-34963 A

  However, the above-described prior art has a problem that it is difficult to quickly set shooting conditions.

  Among X-ray imaging devices, in particular, a mobile X-ray device that makes a round-trip in a hospital and performs X-ray imaging in a hospital room or the like often sets the X-ray generation unit on the X-ray movable diaphragm side. However, the main unit is the only control panel for setting the imaging conditions such as the tube voltage and mAs value of the X-ray tube. Therefore, the photographer must move to the X-ray movable diaphragm when adjusting the position of the X-ray generator and X-ray movable diaphragm, and must move to the front of the operation panel of the main unit when adjusting the imaging conditions. Don't be. As a result, it takes time to set the imaging conditions, and the patient's restraint time becomes longer.

  Accordingly, a main object of the present invention is to provide an X-ray apparatus in which imaging conditions can be set even on the X-ray movable diaphragm side.

  The present invention achieves the above object by providing an imaging condition setting unit not only in the main body but also in the X-ray movable diaphragm.

The main body, an X-ray generation unit that generates X-rays by control from the main body, and an X-ray movable diaphragm that has movable limiting blades and adjusts the irradiation field of the generated X-rays are provided so as to be position-adjustable. a running possible X-ray device, the corners do not interfere with X-ray irradiation field of the X-ray generator with a outer circular arc track of the movable restriction blade in the X-ray movable aperture of the case, super Each includes an ultrasonic transmission unit that transmits an acoustic wave and an ultrasonic reception unit that receives a reflected wave, and includes an ultrasonic rangefinder that measures the distance in the X-ray irradiation direction from the X-ray focal point to the surface of the subject . By providing the distance meter in the X-ray movable diaphragm, the distance from the X-ray focal point to the patient's body surface can be measured at the position on the movable diaphragm side. An ultrasonic distance meter is suitable for the distance meter.

  The case includes an imaging condition / distance indicator that switches between an imaging condition at the time of X-ray imaging and a distance measured by the ultrasonic distance meter.

  A distance meter that measures the distance in the X-ray irradiation central axis direction, a display unit, and a switching unit that switches and displays the imaging conditions set by the imaging condition setting unit and the measurement results of the distance meter on the display unit. . When the distance meter is provided, it is more preferable that the measurement result and the photographing condition can be switched and displayed by a single display means because the number of parts of the display means can be reduced.

  As described above, according to the X-ray apparatus of the present invention, the imaging condition can be adjusted from the movable aperture side by providing the imaging condition setting unit not only on the operation panel of the main body but also on the X-ray movable aperture. Therefore, imaging conditions can be set quickly without moving to the operation panel on the main body side, and the patient's restraint time can be shortened.

  Further, by providing non-imaging condition control units such as a carriage forward / reverse switch and a distance meter in the X-ray movable diaphragm, these non-imaging conditions can also be adjusted from the movable diaphragm side, and the operability is further improved.

  In particular, by providing a batch control unit that collectively controls the input and output of signals between the imaging condition setting unit and the non-imaging condition control unit and the main unit, the wiring between the X-ray movable diaphragm and the main unit is reduced, and the number can be increased quickly. A small X-ray apparatus capable of adjusting the function can be obtained.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
Example 1
1 is a side view of the apparatus of the present invention, FIG. 2 is an external perspective view of an X-ray movable diaphragm used in the apparatus of the present invention, FIG. 3 is an internal configuration diagram of the movable diaphragm, and FIG. 4 is a schematic view of the movable diaphragm viewed from below. It is a perspective view.

  (Overall configuration) As shown in FIG. 1, the X-ray apparatus of the present invention includes a main body 1, an X-ray generator 2 that generates X-rays under the control of the main body 1, and an X-ray that adjusts an X-ray irradiation field. A movable diaphragm 3 is provided. The main body 1 is fixed on the carriage 4, has a built-in motor (not shown) for driving the carriage 4, and has an operation panel (not shown) for setting photographing conditions. The X-ray generator 2 has an X-ray tube (not shown) and generates X-rays according to the imaging conditions set on the operation panel. The X-ray movable diaphragm 3 is rotatably mounted immediately below the X-ray generation unit 2 and is slidably supported on the support column 6 via the arm 5 together with the X-ray generation unit 2. The X-ray movable diaphragm 3 has two pairs of movable restriction blades as will be described later, and each pair of movable restriction blades opens and closes in the X and Y directions to adjust the X-ray irradiation field. The X-ray generation unit 2 and the X-ray movable diaphragm 3 are moved to predetermined positions at the time of photographing by the rotation of the support 6, the elevation along the support 6, and the extension / contraction of the arm 5.

  (X-ray movable diaphragm) As shown in FIG. 2, the X-ray movable diaphragm 3 is provided with an operation panel in front of a box-shaped case 30 opened at the bottom. This operation panel includes operation knobs 31A and 31B for movable restriction blades, shooting condition setting unit 32, shooting condition / distance indicators 33A and 33B, shooting condition display / distance display changeover switch 34, dolly advance switch 35A, dolly reverse A switch 35B and an illumination switch 36 are provided.

<Operation knob>
By rotating the operation knobs 31A and 31B, the two pairs of movable restriction blades 37A and 37B shown in FIGS. 3 and 4 are opened and closed. Each of the knobs 31A and 31B has a rotating shaft, and the rotation of this shaft is converted into an arc motion that opens and closes the movable restricting blades 37A and 37B through a transmission mechanism. Various known mechanisms combining gears and links can be used for this transmission mechanism. In this example, rotating the knob 31A on the right side of FIG. 4 opens and closes the movable restricting blade 37A that operates in the direction perpendicular to the paper surface of FIG. 3, and rotating the knob 31B on the left side of FIG. The movable restricting blade 37B that operates in the left-right direction is opened and closed. Further, the rotating shaft was passed through the case 30, and knobs 31A and 31B were provided on both the front and back of the case. Accordingly, the movable restricting blades 37A and 37B can be operated from either the front side or the back side of the X-ray movable diaphragm 3.

<Shooting condition setting device>
The imaging condition setting unit 32 sets imaging conditions for X-ray imaging. Usually, the tube voltage and mAs value (product of tube current and time) of the X-ray tube are used as imaging conditions. When the tube voltage is low, long-wavelength X-rays with weak transmission power are obtained, and when high, short-wavelength X-rays with strong transmission power are obtained, and the tube voltage is adjusted according to the tissue and thickness of the human body. The mAs value adjusts the amount of X-ray generation. Here, the tube voltage and mAs value are adjusted by pressing the “+” and “−” buttons on the operation panel. The tube voltage is displayed on the left display 33A in FIG. 2, and the mAs value is displayed on the right display 33B in FIG. The display 33B on the right side can also switch and display the measurement result of an ultrasonic distance meter described later by operating the changeover switch 34.

<Dolly forward / reverse switch>
The cart forward / reverse switch 35A, 35B drives the cart 4 to advance / retreat the X-ray apparatus itself by operating the cart. Normally, the X-ray device is laid on the bedside, and the X-ray generator 2 and the X-ray movable diaphragm 3 are moved to an appropriate irradiation position, but the X-ray generator 2 and X can also be moved forward and backward. The linear movable diaphragm 3 can be positioned.

<Illuminated switch>
The illumination switch 36 turns on an illumination lamp that illuminates the X-ray irradiation range. Usually, a halogen lamp or the like is used as the illumination lamp. Light from the lamp built in the case 30 is irradiated below the case through a mirror (not shown) provided in the X-ray movable diaphragm, and the X-ray irradiation field is visualized. The illumination lamp automatically turns off after a certain period of time. Therefore, the timer circuit 11 is also provided in the X-ray movable diaphragm. In this example, it is controlled to turn off automatically after 30 seconds of lighting.

<Ultrasonic distance meter>
An ultrasonic rangefinder 38 is provided inside the movable X-ray diaphragm 3. The ultrasonic distance meter 38 includes ultrasonic transmission / reception units 38A and 38B and a calculation unit, transmits an ultrasonic wave from the transmission unit 38A, and detects a time until the reception unit 38B receives a reflected wave. Based on this time, the calculation unit calculates the distance from the X-ray focal point to the patient body surface, and further calculates the distance from the X-ray focal point to the X-ray film. As for the patient's body thickness, several patterns such as standard, skinny, fatness, etc. are stored in the storage means, and the body thickness corresponding to the body shape is read out by selecting the patient's body shape in advance, and the patient's body thickness is read from the X-ray focus. The distance from the X-ray focal point to the X-ray film is obtained by adding to the distance to the body surface. The measured distance is displayed on the photographing condition / distance display 33B on the operation panel by switching the changeover switch 34.

  In this example, the transmitting unit 38A and the receiving unit 38B are installed in the corner on the front side of the case. Since the movable restricting blades 37A and 37B move in an arc as shown in FIG. 3 to adjust the X-ray irradiation field, there is some space outside the arc trajectory of the movable restricting blades 37A and 37B. In particular, the corners in the case 30 are portions that do not interfere with the X-ray irradiation field 100, as shown in FIG. 4, and the case 30 is enlarged by arranging the transmitting unit 38A and the receiving unit 38B here. The ultrasonic distance meter 38 can be built in without doing so.

<Brake release switch>
Furthermore, concave handles 40 are attached to both sides of the case of the X-ray movable diaphragm 3, and a brake release switch 39 is provided inside the handle 40 (FIG. 2). The X-ray generator 2 and the X-ray diaphragm 3 are supported by the support 6 via the arm 5, and are moved by moving up and down along the support 6, expanding and contracting the arm 5, or rotating the support 6. At that time, a brake mechanism for fixing the X-ray generation unit 2 and the X-ray movable diaphragm 3 to a predetermined position is provided, and movement cannot be performed unless the brake mechanism is released. By providing the release switch 39 of the brake mechanism in the X-ray movable diaphragm 3, the X-ray generator 2 and the X-ray movable diaphragm 3 can be moved. Since the release switch is provided inside the handle, as long as the handle 40 is grasped, the release switch 39 can be pressed simultaneously.

  (Batch Control Means and Operation) A circuit block diagram of the X-ray movable diaphragm 2 is shown in FIG. Shooting condition setter 32, shooting condition / distance indicator 33A, 33B, display changeover switch 34, dolly forward switch 35A, dolly reverse switch 35B, illumination switch 36, ultrasonic distance meter 38 and brake release switch 39 are integrated control means. Are connected together to the microcomputer circuit board 7. The microcomputer circuit board 7 and the main body are connected by a total of four wires including a pair of power supply lines 8A and a pair of communication lines 8B that drive the microcomputer circuit board 7. On the other hand, since the illumination lamp 9 requires brightness, a lamp with high power consumption such as a halogen lamp is usually used. Therefore, the power source of the illumination lamp 9 is connected to the main body side using another power line without passing through the microcomputer circuit. Further, the ground wire 10 is also connected to the main body side.

  The microcomputer circuit board 7 includes a microcomputer, and controls input / output and calculation of various signals with the main body. By using a general-purpose standard such as RS-232C for communication, it is possible to easily receive communication of the main body of the X-ray apparatus and connect to various apparatuses. Data received on the main body side by communication, for example, measurement data of a distance meter, may be used for secondary use such as automatic setting of photographing conditions.

  As shown in FIG. 3, the microcomputer circuit board is arranged at the upper part in the case. Since the movable restricting blades 37A and 37B adjust the X-ray irradiation field 100 by arc motion, there is some space in the upper part of the case. By arranging the microcomputer circuit board in this space, the space in the case 30 can be used effectively.

  The operation of the X-ray apparatus via the microcomputer circuit board 7 is performed as follows. First, the brake release switch 39 is turned on by grasping the handle 40 of the X-ray movable diaphragm, and the brake is released. Accordingly, the X-ray movable diaphragm 3 (X-ray generation unit 2) can be moved to a predetermined position by sliding the X-ray movable diaphragm 3 (X-ray generation unit 2) along the support column 6 or by extending or contracting the arm 5. If necessary, the X-ray apparatus itself is moved forward or backward by pressing the cart forward switch 35A and the cart reverse switch 35B, and the X-ray movable diaphragm 3 (X-ray generating unit) is positioned.

  When the illumination switch 36 is turned on, an on signal is sent to the main body side via the microcomputer circuit board 7, and the illumination lamp 9 is turned on for a predetermined time set by the timer circuit 11. By illuminating the illumination lamp 9, the photographer confirms the X-ray irradiation range.

  Next, the display 33B is displayed as a distance with the changeover switch 34, and the distance is measured with the ultrasonic distance meter 38. Transmit the ultrasonic wave from the transmitter, receive the reflected wave at the receiver, calculate the distance from the X-ray focal point to the patient's body surface by calculating with the calculation unit based on the time between them, and further calculate the X-ray Find the distance from the focal point to the X-ray film. The obtained distance is displayed on the display 33B.

  Next, the change-over switch 34 switches the display device 33B to the photographing condition display. In this state, the imaging condition setting unit 32 is operated to set the tube voltage and mAs value. The set tube voltage and mAs value are displayed on the display 33B. When the imaging conditions are determined, X-ray imaging is performed.

  In this way, the microcomputer circuit board 7 is used to collectively input / output signals from the imaging condition setting unit 32 and the non-imaging condition control unit that controls other functions, and the X-ray movable diaphragm 3 and the main body 1 side. , The wiring between the microcomputer circuit board 7 (X-ray movable diaphragm) and the main body 1 can be reduced even if many functions are provided.

(Example 2)
In the first embodiment, the microcomputer circuit board 7 is used to collectively control signals for realizing a large number of functions, but as shown in FIG. 6, each switch 35A, 35B, 36, 39 and the illumination lamp 9 are connected. Alternatively, the control may be performed by connecting directly to the main body without using a microcomputer circuit board. In this case, the number of wires between the X-ray movable diaphragm and the main body is increased as compared with the first embodiment, but various operations can be performed on the X-ray movable diaphragm side as in the first embodiment.

The side view of this invention apparatus. FIG. 3 is an external perspective view of an X-ray movable diaphragm used in the device of the present invention. The inside of the movable diaphragm used in the device of the present invention. The schematic perspective view which looked at the movable aperture used for the device of the present invention from the bottom. The circuit block diagram of the X-ray movable diaphragm used for this invention apparatus. FIG. 6 is a circuit block diagram of an X-ray movable diaphragm in the second embodiment. External view of a conventional X-ray apparatus. FIG. 8 is a circuit block diagram of an X-ray movable diaphragm in the apparatus of FIG.

Explanation of symbols

  1 Main unit, 1A operation panel, 2 X-ray generator, 3 X-ray movable diaphragm, 4 bogies, 5 arms, 6 struts, 7 microcomputer circuit board, 8B communication line, 8A power line, 9 illumination lamp, 10 ground wire, 11 Timer circuit, 30 cases, 31A knob, 31B knob, 32 Shooting condition setting unit, 33A Shooting condition / distance indicator, 33B Shooting condition / distance indicator, 34 selector switch, 35A dolly forward switch, 35B dolly reverse switch, 36 Illumination Switch, 37A movable limit blade, 37B movable limit blade, 38 ultrasonic rangefinder, 38A transmitter, 38B receiver, 39 brake release switch, 40 handle, 100 X-ray irradiation field

Claims (2)

The main body, an X-ray generation unit that generates X-rays by control from the main body, and an X-ray movable diaphragm that has movable limiting blades and adjusts the irradiation field of the generated X-rays are provided so as to be position-adjustable. a run can X-ray device, the corners do not interfere with X-ray irradiation field of the X-ray generator with a outer circular arc track of the movable restriction blade in the X-ray movable aperture of the case, super An ultrasonic range finder that includes an ultrasonic transmission unit that transmits sound waves and an ultrasonic reception unit that receives reflected waves, and that measures the distance in the X-ray irradiation direction from the X-ray focal point to the subject surface. X-ray apparatus characterized by this.   The X-ray apparatus according to claim 1, wherein the case includes an imaging condition / distance indicator that switches between an imaging condition at the time of X-ray imaging and a distance measured by the ultrasonic distance meter.

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