KR200478432Y1 - Tool for measuring the exposure field - Google Patents

Abstract

The present invention relates to an irradiation field tool for performing an alignment test between an X-ray field and a light field of a diagnostic radiation generator. The transparent plate and the transparent plate, which are spaced apart from each other by a predetermined distance, And an X-ray reactive substance is applied on one side. Therefore, an irradiation field tool having a transparent flat plate placed on the upper side of the sheet is placed on a table, and visible light is irradiated to adjust the irradiation field of the visible ray. After the X-ray is irradiated and the reaction state of the X-ray reactive substance applied on one side of the back sheet is observed, the agreement of the X-ray field and the light irradiation field can be easily and effectively confirmed.

Description

TOOL FOR MEASURING THE EXPOSURE FIELD

The present invention relates to an irradiation field tool for inspecting an X-ray irradiation state of a diagnostic radiation generator, and more particularly, to an X-ray irradiation system for accurately and accurately detecting an X-ray irradiation state of a diagnostic radiation generator without using an X- The present invention relates to an irradiation field tool capable of simply examining whether or not an irradiation object is irradiated.

Generally, the diagnostic radiation generating apparatus includes a diagnostic X-ray apparatus, a diagnostic X-ray apparatus, a dental diagnostic X-ray generator, a computerized tomography apparatus, and a mammography apparatus. Since the diagnostic radiation generator is composed of a combination of electrically and mechanically complex unit components, it can be used in various fields such as abrasion or breakage depending on frequency of use, natural aging or deterioration, corrosion due to environmental conditions, It is accompanied by a performance deterioration due to a cause such as breakage of the fault caused by the change.

Therefore, it is very difficult to evaluate whether the X-ray machine is operating safely and normally in producing a high-quality X-ray image suitable for diagnosis while maintaining the initial performance of the X-ray apparatus during use and decreasing the exposure dose to the patient It is important. Therefore, the diagnostic radiation generator is regularly inspected at the time of new installation, previous installation, or a certain period of time.

The measuring instruments required for the inspection of the diagnostic radiation generator vary depending on the measurement items. Among these measurement items, there are inspection items for measuring the difference between the X-ray field and the light field. This inspection item is an inspection item regarding the performance of the irradiation field adjusting mechanism. It is important to match the X-ray field angle with the light field angle in order to prevent the X-ray from being irradiated to unnecessary portions in the X-ray radiography.

An inspection field tool for facilitating the conformity inspection between an X-ray field and a light field is disclosed in Utility Model No. 20-0476670, which was previously filed and registered by the inventor of the present invention, the contents of which are incorporated herein by reference.

Conventionally, in order to proceed with an analog type inspection for checking whether an X-ray irradiation field is matched with an optical irradiation field by using an irradiation field tool, an irradiation range of light irradiated from the light source toward the irradiation field tool is first measured. Then, the X-ray is irradiated to the irradiation field frame in which the X-ray film is disposed, and the X-ray film is developed to measure the irradiation range of the X-ray. Thereafter, the irradiation range of the light and the irradiation range of the X-ray are compared to check whether or not the X-ray irradiation field matches the light irradiation field.

That is, in the conventional analog type inspection, when the X-ray is irradiated toward the irradiation field tool, the surface of the irradiation field tool does not change much as shown in the photograph of FIG. Then, the X-ray transmitted through the irradiation field tool is absorbed by the X-ray film, and the X-ray film is developed to check whether or not the X-ray field is matched with the light source.

However, when the X-ray film and the developing equipment were not prepared, it was impossible to check whether or not the X-ray field and the light field were matched with each other in an analog manner.

On the other hand, there is a method of connecting the digital X-ray detector which digitally implements the X-ray image without the X-ray film to the monitor and checking whether the X-ray field is matched with the light field. However, there is a disadvantage that the cost of the digital X-ray detector is relatively high.

Registration Utility Model No. 20-0476670

The present invention has been made in order to solve the conventional problems as described above, and it is an object of the present invention to provide an X-ray source which can easily confirm whether or not the X- The goal is to provide tools.

Another object of the present invention is to provide an irradiation field tool which can confirm whether or not the X-ray irradiation field of the diagnostic radiation generating device matches the light irradiation field, without using a relatively expensive X-ray detector.

According to an aspect of the present invention, there is provided an irradiation field tool for performing a matching test between an X-ray field illumination field and a light field illumination field of a diagnostic radiation generator, comprising: a transparent flat plate having a plurality of lead lines spaced apart from each other by a predetermined distance; And a back sheet provided on the lower surface of the transparent plate and coated on one side of the X-ray reaction material.

The X-ray reactant is an X-ray fluorescent material that emits light when X-ray is irradiated.

The X-ray reaction material is an X-ray photosensitive material that absorbs X-rays to be irradiated.

According to the present invention, an irradiation field tool in which a transparent flat plate is placed on the upper surface of a sheet is placed on a table, and visible light is irradiated to adjust the field of view of the visible ray, and then X-ray is irradiated to irradiate the X- Through the reaction state of the substance, it is possible to easily and effectively confirm whether or not the X-ray field and the light field are coincident with each other.

FIG. 1 is a photograph of a state in which a conventional irradiation field tool is irradiated with X-rays.
2 is a perspective view showing an irradiation field tool according to the invention.
Fig. 3 is a photograph of the light emission state of the back surface when irradiating the X-ray toward the irradiation field tool according to the present invention.

Hereinafter, with reference to the accompanying drawings, the construction of an irradiation field tool according to the present invention and a work using the same will be described.

An irradiation field tool is used to check whether the diagnostic radiation generator is newly installed or whether the X radiation field of the diagnostic radiation generator periodically matches with the light field field at the time of the previous installation or for a predetermined period of time.

According to the present invention, as shown in Fig. 2, the irradiation field tool 100 has a transparent flat plate 110 in which a plurality of lead lines are spaced apart from each other at a predetermined interval. The lead strand may comprise a rectangular lead strand 112 and a circular lead strand 114 or one lead strand.

Each of the rectangular lead strands 112 or the circular lead strands 114 is composed of a plurality of lead strands having different standard dimensions and they are displayed on the transparent flat plate 110 in a spaced apart relationship.

The standard dimensions of the square wand 112 may be, for example, 5 cm x 5 cm, 20 cm x 20 cm, and 30 cm x 30 cm. The standard dimensions of the circular lead string 114 may be, for example, of dimensions of 6 inches, 9 inches and 12 inches in radius. However, the standard dimensions of each of the rectangular wand 112 and the circular wand 114 may be different.

It is preferable to align the centers of the rectangular lead strands 112 and the circular lead strands 114 and more preferably to match the center of the rectangular lead strands 112 and the center of the circular lead strands 114 to each other. In order to align the centers of the rectangular lead wires 112 and the circular lead wires 114 with each other, the flat plate 110 may be provided with intersecting ribs perpendicularly intersecting with the center.

The rectangular lead wire 112 and the circular lead wire 114 are preferably made of a material that can not transmit radiation (X-ray), for example, a lead wire. This is because it is possible to confirm the dimensions of the X-ray irradiation when irradiating the radiation.

Further, according to the present invention, the irradiation field tool further includes a back sheet 120 provided on the lower surface of the transparent flat plate 110. An X-ray reactive material capable of reacting with the X-ray to be irradiated and observing the reaction state from the outside is applied to one surface of the sheet paper 120. At this time, the material of the paper sheet 120 is not limited to paper, but may be a material such as a film, a plate material, and the like, to which an X-ray reactive material can be applied.

The X-ray reactant may be an X-ray fluorescent material that emits light when the X-ray is irradiated, or an X-ray photosensitive material that exhibits a blackening phenomenon when the X-ray is irradiated.

That is, the X-ray fluorescent material is a substance that emits visible light, that is, light when absorbing X-rays to be irradiated. The X-ray photosensitive material is a material that exhibits a blackening phenomenon when it absorbs X-rays to be irradiated.

A test for checking whether the X-ray field and the light field are matched using the field tool 100 according to the present invention is as follows.

The operator puts the irradiation field tool 100 on the table and then irradiates the test light source. For example, the operator adjusts the light source adjustment device so that the light source illuminance standard of the visible light emitted from the test light source matches the standard dimension 20 cm X 20 cm of the rectangular lead line 112 of the tool 100. After matching the size of the light source to the desired standard size, when the X-ray is irradiated by operating the radiation generating device, the X-ray source and the light source are checked through the reaction state of the X-ray reactant .

For example, when an X-ray is irradiated to an irradiation field tool 100 composed of a transparent substrate 110 and a backsheet 120 having an X-ray reactive substance made of X-ray fluorescent material, The X-ray fluorescent material applied to the X-ray fluorescence material emits the X-ray as shown in FIG. 3 after absorbing the irradiated X-ray.

That is, when the X-ray is irradiated, the electrons of the X-ray fluorescent material which has received the energy of the X-ray rise to the high energy level and then come down to the low energy level, 114 are not irradiated with X-rays due to the shielding action of the light-shielding layer 114, the light-emitting phenomenon can not be exhibited. At this time, since the light emission phenomenon of the X-ray fluorescent material occurs instantaneously, a camera is used to record it.

On the other hand, when the X-ray is irradiated to the irradiation field tool 100 made of the X-ray photosensitive material and the transparent plate 110, the X-ray reaction material is coated on one side of the rear sheet 120 The X-ray photosensitive material absorbs the irradiated X-ray to exhibit the blackening phenomenon, but the portion where the X-ray is not irradiated due to the shielding action of the lead wires 112 and 114 shows the original state without change.

Since the electrons of the X-ray fluorescent material show a luminescence phenomenon and return to the original state, the back sheet 120 coated with the X-ray fluorescent material is reusable, but the X-ray photosensitive material returns to its original state after the blackening phenomenon The back sheet 120 on which the X-ray photosensitive material is applied is used in a single use.

As a result, the operator can easily confirm whether or not the X-ray field and the light field are coincident with each other through the light emission phenomenon or the blackening phenomenon of the X-ray reaction material by X-ray irradiation.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the appended claims. Should be recognized.

100: field frame
110: Reputation
112: square lead
114: Circular lead
120: on the back side

Claims (3)

An irradiation field tool for performing a matching test between an X-ray field and a light field of a diagnostic radiation generator,
A transparent flat plate on which a plurality of lead lines are spaced apart from each other at a predetermined interval;
And a back sheet provided on a lower surface of the transparent plate and coated on one side of the X-ray reaction material.
The method according to claim 1,
Wherein the X-ray reactant is an X-ray fluorescent material that emits light when X-ray is irradiated.
The method according to claim 1,
Wherein the X-ray reaction material is an X-ray photosensitive material that absorbs X-rays to be irradiated.

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