JP4591804B2 - Radiography equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a radiation imaging apparatus, and more particularly to a radiation imaging apparatus capable of capturing an image of a human internal tissue in accordance with radiation irradiated from a radiation irradiation unit.
[0002]
[Prior art]
2. Description of the Related Art Radiation imaging apparatuses that image internal tissues of a patient's body using radiation such as X-rays are known for examining diseases and injuries. In some of such radiographic apparatuses, a standby mode is automatically set when not used for a certain period of time from the viewpoint of power saving and consumables protection.
[0003]
[Problems to be solved by the invention]
By the way, in a certain type of radiation imaging apparatus, there is one that controls a plurality of imaging units using one control apparatus. In such a case, for example, since one imaging unit is not used for a certain period of time, when the standby mode is set for the entire radiation imaging apparatus, it is impossible to perform imaging with another imaging unit. Therefore, it is not preferable. However, it can be said that an imaging unit that has not been used for a long time is preferably set in the standby mode from the viewpoint of power saving and the like.
[0004]
The present invention has been made in view of the problems of the related art, and an object of the present invention is to provide a radiation imaging apparatus capable of appropriately canceling the standby mode.
[0005]
[Means for Solving the Problems]
(1) A radiation imaging apparatus of the present invention includes a plurality of types of imaging units capable of setting and releasing a standby mode, and a control device that is connected to the plurality of types of imaging units and controls each imaging unit. In the radiation imaging apparatus, the control device cancels the standby mode of the plurality of types of imaging units and responds to a case where the non-use time of each imaging unit exceeds a predetermined time set for each imaging unit. In addition, since the standby mode is set individually for each imaging unit, for example, an imaging unit that is not used can set the standby mode to extend the life of consumables such as power saving and CRT, and may be used or used. For a shooting unit with a high value, shooting can be performed quickly by not setting the standby mode.
[0006]
(2) Further, the control device cancels the standby mode of the plurality of types of imaging units based on the input of the imaging order. Thereby it is possible to speed up imaging.
[0007]
(3) Further, since the control device determines the predetermined time for each photographing unit according to the usage frequency of each photographing unit, for example, a photographing unit having a high usage frequency sets the predetermined time longer. Thus, the standby mode is less likely to be set, thereby speeding up shooting. On the other hand, a shooting unit that is not frequently used can be set easily by setting the predetermined time short. Electricity can be planned.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic configuration diagram of a network system including a radiation imaging apparatus according to the present embodiment.
[0009]
In FIG. 1, a server 1 and a control device 2 connected to each other via a network N in a hospital form part of a network system. The control device 2 includes a first radiation irradiation unit 3, a first imaging unit 4 associated with the first radiation irradiation unit 3, a second radiation irradiation unit 5, and a second imaging unit 6 associated therewith. They are connected to form a radiographic apparatus.
[0010]
A conversion device that converts a radiographic image into digital image data is incorporated in the first imaging unit 4 and the second imaging unit 6, but since such devices are known per se, the details are not described below. . In addition, you may arrange | position the conventional radiation film in the imaging | photography parts 4 and 6 instead of a converter.
[0011]
Next, the operation of the present embodiment will be described. Here, in order to save power and extend the life of the display, the radiation imaging apparatus of the present embodiment automatically sets the standby mode when it is not used for a certain period of time, and stops supplying the main power or displaying the CRT. Stop etc. are done. In the standby mode, the control device 2 is configured such that the main CPU (not shown) stops operating, but the sub CPU (not shown) operates.
[0012]
Furthermore, for example, the reservation information for photographing is input to the server 1 installed in the office room of the hospital, and this can be transmitted to the control device 2 arranged on the photographing room side as appropriate.
[0013]
However, in the radiation imaging apparatus in which the standby mode is set, when an imaging order is input from the server 1 via the network N, the sub CPU responds and the standby mode is canceled, so that preparation for imaging is started immediately. Can do. However, if the control device 2 is not connected to the photographing units 4 and 6, even if the standby mode is canceled, photographing cannot be performed immediately. You may make it cancel.
[0014]
Here, the control device 2 can count and store the usage time and usage frequency of the imaging units 4 and 6. Here, the imaging unit 4 is relatively frequently used, but the imaging unit 6 is relatively low in use frequency. Therefore, the control device 2 sets the non-use time (predetermined time) in which the standby mode is set for the shooting unit 4 with high use frequency, for example, to 30 minutes, and for the shooting unit 6 with low use frequency, The non-use time (predetermined time) in which the standby mode is set is set short, for example, 15 minutes.
[0015]
That is, according to the present embodiment, the control device 2 waits for each of the photographing units 4 and 6 individually when the non-use time of each of the photographing units 4 and 6 exceeds a predetermined time. Since the mode is set, for example, the imaging unit 6 which is highly likely not to be used sets the standby mode early, thereby prolonging the life of consumables such as power saving and CRT, and may be used or used. As for the high photographing unit 4, photographing can be performed quickly by not setting the standby mode.
[0016]
However, the control device 2 can add the use frequency to the determination of the predetermined time. For example, the usage frequency of the imaging unit 6 was low yesterday, but if it is determined that the usage frequency is high today, the control device 2 changes the predetermined time of the imaging unit 6 to be longer (for example, from 15 minutes to 30 minutes). be able to.
[0017]
In addition, the control device 2 can change the predetermined time on a one-week schedule. In hospitals, the day of the doctor in charge may be determined. For example, the day of the week for which the internal medicine doctor is in charge sets a predetermined time for the imaging unit 4 longer, and the day of the week for which the surgeon is in charge is the imaging unit. It is conceivable to set the predetermined time 6 longer. Furthermore, it is preferable to set a short predetermined time for any of the imaging units 4 and 6 on a day when the hospital is not opened in principle, such as Sundays and holidays.
[0018]
Since the control device 2 has a function of controlling the photographing units 4 and 6, after the standby mode is set for all the photographing units 4 and 6, the standby mode is set after a predetermined time has elapsed. preferable. However, when the control device 2 is not used other than the photographing units 4 and 6, the standby mode may be set in the control device 2 at the same time as the standby mode is set in the last photographing unit. .
[0019]
FIG. 2 is a diagram showing a schematic configuration of the radiation imaging apparatus according to the present embodiment. As shown in FIG. 2, the radiation imaging apparatus 50 includes imaging units 4 and 6 and a control device (controller) 2.
[0020]
When the X-ray sources (radiation irradiation units) 3 and 5 driven by the drive source 1A are irradiated with X-rays, the imaging units 4 and 6 store a part of the X-ray energy, Using a stimulable phosphor that exhibits stimulated emission in response to the accumulated X-ray energy when irradiated with an excitation light such as a laser beam, a plate-like phosphor formed by laminating a stimulable phosphor on a support. A laser beam is sequentially scanned by sequentially storing and recording radiation image (X-ray transmission plane image) information of a subject such as a human body by X-rays irradiated from the X-ray irradiation apparatus 1B on the stimulable phosphor plate 104. The photostimulated light is emitted, and the photostimulated light is sequentially read photoelectrically by the photoelectric reading unit 20 to obtain an image signal. Then, the imaging units 4 and 6 irradiate the stimulable phosphor plate 104 after reading this image signal with erasing light to release X-ray energy remaining on the plate, and prepare for the next imaging.
[0021]
The imaging units 4 and 6 are composed of a photostimulable phosphor plate 104 and a laser diode that generates laser light as excitation light for the photostimulable phosphor plate 104 for radiographic image information of the subject P as a subject. A laser light source unit 106, a laser drive circuit 105 for driving the laser light source unit 106, an optical system 107 for scanning the laser light from the laser light source unit 106 on the stimulable phosphor plate 104, and an excitation laser It has a photoelectric reading unit 20 that collects stimulated luminescence excited by light, photoelectrically converts it, and obtains an image signal. The photoelectric reading unit 20 includes a condensing body 108 that condenses the stimulated emission excited by the excitation laser beam, and a photomultiplier (photomultiplier tube) 10 that photoelectrically converts the light collected by the condensing body 108. , A high-voltage power supply 10a for applying a voltage to the photomultiplier 10, and a converter for converting a current signal from the photomultiplier (photomultiplier tube) 10 into a digital signal by current-voltage conversion, voltage amplification, A / D conversion, etc. 11, a correction unit 12 that corrects the digital signal converted by the conversion unit 11, and an image transmission unit 13 that transmits the digital signal corrected by the correction unit 12. A signal is transmitted to the controller 2. The correction unit 12 is composed of a RISC processor and corrects response delays and unevenness of digital signals.
[0022]
The imaging units 4 and 6 further include a halogen lamp 14 for irradiating erasing light and a driver for driving the halogen lamp 14 in order to release X-ray energy remaining on the stimulable phosphor plate 104 after the image signal is read. 15. The photographing units 4 and 6 include a control unit 17 that controls the laser driving circuit 5, the high-voltage power supply 10 a, the conversion unit 11, the correction unit 12, the image transmission unit 13, and the driver 15. The laser light source unit 106, the optical system 107, the condenser 108, the photomultiplier 10, and the halogen lamp 14 of the imaging units 4 and 6 are integrally formed as a sub scanning unit (not shown) by a ball screw mechanism (not shown). It moves in the sub-scanning direction perpendicular to the laser scanning direction. This sub-scanning unit performs sub-scanning by moving during image reading, and erases the light by the halogen lamp 14 during the backward movement.
[0023]
The control device 2 includes a personal computer main body 25, a keyboard 26, and a monitor display unit 27. The digital signal of the radiation image information received from the imaging units 4 and 6 is temporarily stored in a memory and subjected to image processing. In response to an operation input from the keyboard 26, display on the monitor display unit 27 and image processing are controlled, and radiation image information subjected to image processing is output.
[0024]
The present invention has been described above with reference to the embodiments. However, the present invention should not be construed as being limited to the above-described embodiments, and can be modified or improved as appropriate. For example, three or more photographing units may be provided.
[0025]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, the radiography apparatus which can cancel | release a standby mode appropriately can be provided.
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram of a network system including a radiation imaging apparatus according to an embodiment.
FIG. 2 is a diagram showing a schematic configuration of a radiation imaging apparatus according to the present embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Server 2 Control apparatus 3 1st radiation irradiation part 4 1st imaging | photography part 5 2nd radiation irradiation part 6 2nd imaging | photography part

Claims (3)

In a radiation imaging apparatus having a plurality of types of imaging units capable of setting and canceling a standby mode, and a control device that is connected to the plurality of types of imaging units and controls each imaging unit ,
The control device cancels the standby mode of the plurality of types of imaging units, and each imaging unit in response to a non-use time of each imaging unit exceeding a predetermined time set for each imaging unit A radiation imaging apparatus characterized by individually setting a standby mode. The radiation imaging apparatus according to claim 1, wherein the control device releases a standby mode of the plurality of types of imaging units based on an input of an imaging order . The radiation imaging apparatus according to claim 1 , wherein the control device determines the predetermined time for each imaging unit according to a use frequency of each imaging unit .

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