JP4259032B2 - Radiation image conversion panel and radiation image photographing apparatus having IC memory unit - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a radiation image conversion panel, and more particularly to a radiation image conversion panel and a radiation image photographing apparatus that have an IC memory unit and can be managed in various ways.
[0002]
[Prior art]
As an effective diagnostic means in place of the conventional radiography method, a radiographic image recording / reproducing method using a stimulable phosphor described in JP-A No. 55-12145 has been widely used.
[0003]
This method uses a radiation image conversion panel containing a stimulable phosphor, and absorbs the radiation transmitted through the subject or emitted from the subject into the stimulable phosphor, visible light, ultraviolet light, etc. The stimulable phosphor is excited in time series with electromagnetic waves (excited light), and the stored radiation energy is emitted as fluorescence (referred to as stimulated emission light), and this fluorescence is read photoelectrically. Thus, an electrical signal is obtained, and a radiographic image of a subject or subject is reproduced as a visible image on a CRT or film based on the obtained electrical signal. The radiographic image conversion panel after reading is subjected to erasure of the remaining image and used for the next imaging.
[0004]
Whereas conventional radiographic methods combining radiographic films and intensifying screens consume film each time they are taken, the use of photostimulable phosphors allows the use of radiographic image conversion panels so that resources can be used repeatedly. It is advantageous in terms of protection and economic efficiency. Also, by processing the image information data, it is possible to convert the image of the target region so that it is easy for the observer to see, improve the diagnostic accuracy, and because of the high sensitivity, the radiation exposure dose Can also be reduced.
[0005]
However, such an excellent radiation image conversion panel is repeatedly used, and for example, the sensitivity is lowered, the erasability is deteriorated, and the surface protective layer is deteriorated due to rubbing during handling. In order to improve the reliability of the product, it is set as 2 years from the start of use after opening as an expiration date.
[0006]
Further, the deterioration is not limited to the time period, but the deterioration state changes depending on the number of times used during the period, the intensity and time of the exposed radiation, and the like.
[0007]
Usually, the radiation image conversion panel is attached with an ID label indicating a manufacturer's product name, date of manufacture, manufacturing lot number, and the like.
[0008]
A medical institution that has purchased a radiation image conversion panel is usually managed with a ledger, and each radiation image conversion panel is given a unique symbol, number, etc. for that medical institution. It was to be disposed of when the expiration date expired.
[0009]
In other words, in the radiation image conversion panel, it is actually the case that the use history is hardly managed, and it is used despite its poor handling and degraded performance, or reliability and safety. For this reason, even though a very short expiration date is set and the performance is sufficiently maintained, it is discarded as an expiration date, or some medical facilities are insufficiently managed and expired. Despite this, there was a problem that it had been used for diagnosis without knowing it.
[0010]
[Problems to be solved by the invention]
The present invention has been made in view of the above circumstances, and an object thereof is to provide a radiation image conversion panel that can easily manage an expiration date and a use history, and a radiation image capturing apparatus using the radiation image conversion panel.
[0011]
[Means for Solving the Problems]
The above problem could be solved by the following configuration of the present invention.
[0012]
(1) A radiation image conversion panel obtained by sticking a phosphor plate having a stimulable phosphor layer on a support to a tray, having an IC memory unit , and sticking to the radiation image conversion panel A radiation image conversion panel having a printed ID label and the IC memory unit embedded in a tray .
[0014]
(2) The radiation image conversion panel according to (1), wherein the IC memory unit is provided on an ID label attached to the radiation image conversion panel.
[0015]
( 3 ) The radiation image conversion panel according to (1) or (2 ), wherein the IC memory unit is a non-contact type.
[0016]
( 4 ) Using the radiation image conversion panel according to any one of (1) to ( 3 ), the radiation image information is recorded on the stimulable phosphor layer, and the use history information is recorded on the IC memory unit. A radiographic imaging apparatus characterized by:
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a radiation image conversion panel having an IC memory unit of the present invention and a radiation image photographing apparatus using the same will be described with reference to the drawings.
[0018]
FIG. 1 is a schematic configuration diagram of a radiation image conversion panel having an IC memory unit of the present invention. FIG. 1A is a plan configuration diagram, and FIG. 1B is a rear configuration diagram. The radiation image conversion panel 10 has a phosphor plate 6 attached on a tray 7 and an ID label 8 attached on the back of the tray. FIG.1 (c) shows the cross-sectional block diagram of the AA 'line | wire arrow of FIG.1 (b).
[0019]
A photostimulable phosphor layer 1 is formed on a support 2 and a phosphor sheet provided with a protective layer 3 on its upper surface is covered with an upper protective sheet 4 and a lower protective sheet 5 to form a phosphor plate 6. The phosphor plate 6 is adhered on the tray 7 by adhesion to form the radiation image conversion panel 10.
[0020]
An ID label 8 is affixed to the back surface of the tray 7, and in this figure, the IC memory unit 9 is embedded below the ID label 8.
[0021]
FIG. 2 is a diagram showing a form of attaching the ID label 8 and the IC memory unit 9.
Figure 2 is disposed on the ID label 8 and the IC memory unit 9 different locations, IC memory unit 9 shows the state of being embedded in a tray 7. These positional relationships may be any positions as long as they do not interfere with the radiation image conversion. In the present invention, an ID label is attached to the IC memory unit, and the IC memory portion is placed on the tray. The configuration shown in FIG. 1 embedded therein is most preferred.
[0022]
The IC memory unit used in the present invention is “IC card” edited by the Institute of Electronics, Information and Communication Engineers (Ohm), “Role of IC Memory Card in the Personal Media Age”, IC Card Publishing Association 1992, “IC Memory Card Guidelines Ver. 4.1 ”described in the Japan Electronics Industry Promotion Association,“ Non-contact IC cards become more and more interesting ”TRIGGER 97/11,“ Non-contact IC card technology and materials ”(in Japanese) IC (Inoue Science Information Center) It has a memory part and a microprocessor part that are applied to general IC cards, and the interface part can exchange information with a metal terminal for the contact type, and a metal terminal for the non-contact type. It has an antenna coil instead of and can exchange information by radio waves. As the IC memory unit used in the present invention, it is preferable to use a non-contact type capable of reading and writing from a certain distance away by a predetermined electromagnetic wave signal.
[0023]
FIG. 3 is a schematic configuration diagram of a radiation image capturing apparatus using the radiation image conversion panel of the present invention.
[0024]
After the subject 102 is disposed between the radiation image conversion panel 10 and the radiation source 101, when the radiation source 101 is turned on, the transmitted radiation image of the subject 102 is displayed on the photostimulable phosphor layer of the radiation image conversion panel 10. Records are accumulated. Thereafter, the radiation image conversion panel 10 is scanned through a mirror 106 by a stimulable excitation light source 105 such as a laser, and the photostimulated luminescence emitted by the stimulable phosphor is detected by the photodetector 107 via the light transmission means 108. At this time, the transport stage 109 performs sub-scanning from the upper side to the lower side, for example, and detects the stimulated light emission of the entire panel 10. The time-sequential stimulated light emission electric signal is amplified by the amplifier 111 and then sent to the storage means 113 through the A / D converter 112. Further, an erasing light source 110 is provided at a position facing the phosphor side surface of the conversion panel 10, and erases the latent image accumulated in the phosphor after detecting the stimulated light emission.
[0025]
The erasing light source 110 is a light source that emits light including an excitation wavelength region of the phosphor in the stimulable phosphor. For example, a halogen lamp or a tungsten lamp as disclosed in JP-A-56-11392 An infrared lamp, an LED, a laser light source, or the like can be arbitrarily selected and used.
[0026]
In addition, the radiation image conversion panel 10 of the present invention has an IC memory unit 9, transmits data held by the IC memory unit from a transmitting antenna, is received by the transceiver 141, and is transmitted to the image display device 142. Is displayed. When the photographing is completed, data obtained by the current photographing is automatically input, and the data is added to the IC memory unit via the transceiver 141. Further, necessary data may be input artificially by the registration device 143.
[0027]
The radiation image capturing apparatus 150 of the present invention includes a radiation image capturing part 131 that captures, reads, and erases a radiation image, an image processing part 132, and a data transmission / reception part 133. It doesn't have to be a thing.
[0028]
It is preferable that the memory part of the IC memory unit used in the present invention is divided into a manufacturer manufacturing information recording memory part and a usage history information recording memory part for writing a usage history used by a medical facility. In the manufacturer manufacturing information recording memory section, manufacturing information such as a manufacturing type name, a manufacturing date, an expiration date, a manufacturing lot, and the like is recorded, and the rewriting is protected information.
[0029]
On the other hand, as usage history information, for example, information such as date of purchase, use start date, use date and time, place of use, machine used, imaging site, imaging conditions, radiation intensity, irradiation time, etc. can be written at the time of use. It has become. After completion of imaging, data indicating that imaging has been completed can be written, and when reading is performed by irradiating excitation light next, data indicating that reading has been completed is recorded and erased. Data indicating that the image has been erased is recorded, and information indicating that the next photographing is possible is written. These pieces of information can be set so as to be written by a signal from the main body of the radiographic image capturing apparatus, and these pieces of information can be read and written in a non-contact manner.
[0030]
In addition, when the expiration date approaches, it is possible to give a function such as issuing an alarm at the time of use or prohibiting use after the expiration date.
[0031]
In the past, when using a radiographic imaging device using a radiographic image conversion panel, the radiologist used to control what led panel was used and under what imaging conditions, and entered a personal computer to manage the ledger. By installing an IC memory unit on the radiation image conversion panel side, it is possible to automatically input / output the panel to be used and the imaging conditions from the radiation imaging device body, eliminating human error such as confirmation errors and input errors. It can be set as the system which can do.
[0032]
【The invention's effect】
By using a radiation image conversion panel having an IC memory unit, it becomes possible to automatically link the radiation image capturing apparatus main body and the radiation image conversion panel in a medical institution, such as input errors and expiration date management. We were able to greatly reduce human error.
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram of a radiation image conversion panel having an IC memory unit of the present invention.
FIG. 2 is a diagram showing a form of attaching an ID label and an IC memory unit.
FIG. 3 is a schematic configuration diagram of a radiation image capturing apparatus using the radiation image conversion panel of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Stimulable fluorescent substance layer 2 Support body 3 Protective layer 4 Upper side protective sheet 5 Lower side protective sheet 6 Phosphor plate 7 Tray 8 ID label 9 IC memory unit 10 Radiation image conversion panel 131 Radiation image photographing part 132 Image processing part 133 Data transmission / reception part 150 Radiation imaging device

Claims (4)

In a radiation image conversion panel obtained by attaching a phosphor plate having a stimulable phosphor layer on a support to a tray, an ID having an IC memory unit and attached to the radiation image conversion panel A radiation image conversion panel having a label and having the IC memory unit embedded in a tray . The radiation image conversion panel according to claim 1, wherein the IC memory unit is provided on an ID label attached to the radiation image conversion panel.   3. The radiation image conversion panel according to claim 1, wherein the IC memory unit is a non-contact type.   The radiation image information is recorded on the photostimulable phosphor layer using the radiation image conversion panel according to any one of claims 1 to 3, and usage history information is recorded on the IC memory unit. Radiation imaging device.

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