KR101967664B1

KR101967664B1 - Protector for photographing a medical image

Info

Publication number: KR101967664B1
Application number: KR1020170022721A
Authority: KR
Inventors: 박향수
Original assignee: 주식회사 더굳인터내셔널
Priority date: 2017-02-21
Filing date: 2017-02-21
Publication date: 2019-04-11
Also published as: WO2018155877A1; CN109640826A; KR20180096253A

Abstract

The present invention relates to a method for screening a medical image such as a computed tomography (CT) examination, a general radiography, a fluoroscopy, or the like using a shielding means including a contrast material capable of shielding radiation, Stress artifacts that can be generated due to the shielding means as a result of artificial shading due to the difference in the rate of absorption of radiation can be effectively prevented because specific body parts of a patient with high sensitivity can be effectively protected, The present invention relates to a medical image capturing apparatus and a medical image capturing apparatus which can ensure a space that can be absorbed into air by a scattering line generated by a shielding means .
The shield for medical imaging according to the present invention includes a shielding means including a contrast material and a gap holding member attached to a bottom surface of the shielding means to separate the shielding means from a body portion at a predetermined distance.

Description

{Protector for photographing a medical image}

The present invention relates to a medical image capturing apparatus, and more particularly, to a medical image capturing apparatus, more particularly, to a computerized image capturing apparatus using shielding means including a contrast medium capable of shielding radiation in order to minimize radiation exposure to a radiation- A specific body part of a patient having a high radiation sensitivity such as a female breast, a thyroid, a lens, or a gonads can be effectively protected during a medical image inspection such as a CT scan or a general radiography test or a fluoroscopic examination, (Streak Artifact) which can be generated due to the shielding means due to the provision of the gap holding member can minimize the image of the image due to the artificial shading due to the difference in the absorption rate of radiation, As well as the scattering line generated by the shielding means, Relates to a medical image photographing reserve a space can be secured so that can be absorbed.

Of the total radiation exposed to us, natural radiation is about 85%, and most of the remaining radiation is exposed by medical radiation such as X-ray. Radiological imaging tests using medical radiation to medical institutions are used for medical applications .

It also recommends minimizing the dose received by the patient while obtaining optimal images according to the ALARA (As Low As Reasonably Achievable) concept recommended by the International Commission on Radiological Protection (ICRP). Medical imaging using radiation is based on the permeability of radiation, but exposure to radiation is inevitable to create images using radiation. Therefore, there is a need for radiation protection for various parts of the human body, especially for radiation sensitive areas.

However, protective clothing for workers such as radiologists who may be exposed to radiation has been provided in various forms, but there is no protective equipment for protecting the patient's specific area during CT imaging. In general, protective clothing using lead (Pb) with high atomic number is widely used in order to prevent exposure of workers such as radiation workers who may be exposed to radiation. However, in order to protect patients' specific body parts, it is necessary to wear a conventional protective clothing and perform a CT scan. Streak artifact (Streak artifact: Due to the difference in absorption between the peripheral part and radiation, It is difficult to read the image due to the phenomenon that is difficult to read).

On the other hand, the term "contrast medium" refers to a composition that is applied to the stomach, intestines, blood vessels, cerebrospinal fluid, joints, and the like, so that the tissue or blood vessels can be well observed during radiographic examinations such as magnetic resonance imaging (MRI) Since the X-ray absorption difference is artificially increased, the contrast of the image is increased. When the body part is used in a specific body part, the X-ray absorption amount of the body part is high at the time of photographing such as CT, It is a substance that improves the diagnostic value by allowing the lesion to be distinguished from the surrounding area.

For reference, these contrast agents are generally divided into a contrast agent and a contrast agent. The contrast agent transmits more X-rays than the surrounding tissues, while the positive contrast agent absorbs more X-rays to display images. Such benign contrast agents include contrast agents containing substances such as iodine or barium sulfate, and sound contrast agents include air, carbon dioxide, and carbon dioxide.

In recent years, in order to prevent the radiation workers, such as radiation workers, who are exposed to radiation, the existing lead (Pb) protective clothing is heavy and solves the problem of musculoskeletal diseases caused by the weight of the protective clothing when worn for a long time However, in the case of using the iodine or barium sulphate as a protective clothing for the patient, it is considered that the radiation is 100% It is impossible to secure a body image or it is impossible to read the image due to the streak artifact phenomenon as in the case of the protective clothing made of lead (Pb).

Korean Patent Publication No. 10-2001-0095618 (November 11, 2001) Korean Patent Laid-Open Publication No. 10-2014-0029502 (Apr. 31, 2014) Korean Patent Publication No. 10-2015-0009812 (2015.01.27) Korean Patent Publication No. 10-2011-0064988 (June 15, 2011)

Accordingly, the present invention provides a method for screening a medical image such as a computerized tomography (CT) examination, a general radiographic examination, and a fluoroscopic examination using a shielding means including a contrast material capable of shielding radiation, such as a breast, a thyroid, a lens, A specific body part of a patient having a high radiation sensitivity can be effectively protected and a streak artifact can be generated due to the shielding means as the space holding member is provided on the bottom surface of the shielding means. The image is minimized so that a correct image can be read and a space for absorbing some radiation not absorbed by the shielding means can be secured in the air. .

In order to attain the above object, the present invention provides a medical image capturing device comprising shielding means including a contrast material, and a gap keeping member attached to a bottom surface of the shielding means to separate the shielding means from a body part at a predetermined interval do.

In the present invention, the gap holding member is further provided with adhesive means for fixing the gap holding member on the body on the bottom surface of the gap holding member.

In the present invention, it is assumed that the shielding means absorbs 10 to 40% of the radiation irradiated toward the body during the CT scan.

In the present invention, the spacing member is made of a porous sponge having a density similar to that of air.

In the present invention, the thickness of the gap holding member is 10 to 40 mm.

According to the above-mentioned medical image capturing protective apparatus, first, by using the shielding means including the contrast material capable of shielding the radiation, it is possible to perform a medical image examination such as a CT examination, a general radiographic examination, It has the advantage that specific body parts of patients with high radiation sensitivity such as thyroid, lens, and gonads can be effectively protected.

Secondly, since the space holding member is provided on the bottom surface of the shielding means, a streak artifact (phenomenon that is difficult to read the image due to artificial shading due to the difference in the absorption rate of radiation) that can be generated due to the shielding means is minimized So that accurate image reading can be performed.

In addition, thirdly, a space for absorbing the scattering line generated by the shielding means into the air can be secured, and there is an advantage that the radiation exposure by the scattering line and the articulation artifact of the image can be prevented.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a medical image capturing device according to an embodiment of the present invention; FIG.
FIG. 2 is a conceptual view of a protective image for medical imaging according to an embodiment of the present invention. FIG.
FIGS. 3 to 5 are comparative images according to the thickness of the gap holding member of the medical image capturing device according to the embodiment of the present invention. FIG.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. It is to be understood that the same is by way of illustration and example only and is not to be taken by way of limitation, the scope of the present invention being limited only by the terms of the appended claims.

FIG. 1 is a perspective view of a medical image capturing apparatus according to an exemplary embodiment of the present invention, FIG. 2 is a conceptual diagram of a medical image capturing apparatus according to an exemplary embodiment of the present invention, FIGS. And the thickness of the spacer of the medical image capturing device according to the thickness of the holding member.

The shield for medical imaging according to one preferred embodiment of the present invention includes shielding means including a contrast material and a gap holding member attached to a bottom surface of the shielding means to separate the shielding means from a body portion at a predetermined distance.

Hereinafter, with reference to FIG. 1 and FIG. 2, the connection relationship between the components of the protector 1 and the components thereof according to an embodiment of the present invention will be described in detail.

First, the shielding means 10 according to the present invention aims at minimizing the exposure of the patient to radiation by utilizing the nature of the contrast medium into which the radiation is absorbed. More specifically, in the case of a part or all of the heading organs irradiated with the same amount of radiation in 360 degrees forward of the body during the CT scan, the minimum amount of radiation capable of capturing the image is checked . That is, the shielding means 10 reduces the primary radiation generated from the X-ray tube by 10 to 40% (through shielding through absorption of radiation) to reduce the radiation exposure, To reduce the dose of radiation. Therefore, the shielding means 10 according to the present invention is made so that the contrast material contains 10 to 40% of the primary radiation generated from the X-ray tube, and can be formed into various shapes such as sponge, . Iodine or barium sulphate (BaSO ₄ ), which can absorb radiation, may be a typical example of the contrast medium 12 included in the shielding means 10 used herein. If the substance is capable of absorbing other radiation, iodine ) Or barium sulphate (BaSO ₄ ).

The above-described shielding means 10 is made to be deformable in conformity with the bending of the body and is formed in an eight-figure shape as shown in the figure. In addition, the shielding means 10 can be modified into various shapes. It is preferably formed to be 2 mm to 20 mm.

In addition, it is preferable that the above-described shielding means 10 is manufactured such that 10 to 40% of the radiation irradiated toward the body is absorbed during a medical image examination such as a CT examination, a general radiography test, and a fluoroscopic examination, The reason for this is that unabsorbed primary radiation must be transmitted to the body for computed tomography (CT) imaging of the body. In this case, if the primary radiation is absorbed to less than 10%, there is a problem of not reducing the amount of radiation that is exposed to radiation-sensitive body parts. If the radiation is absorbed by more than 40% This is because there is a problem that the image itself can not be obtained.

On the other hand, a gap holding member 20 is attached to the bottom surface of the shielding unit 10. The gap holding member 20 allows the shielding unit 10 to be spaced apart from the body part by a predetermined distance, And the shielding means (10).

That is, as shown in FIG. 2, when only the shielding unit 10 is formed without the gap maintaining member 20, the primary radiation reaching the shielding unit 10 collides with the shielding unit 10, . In this case, the scattering line is low in energy and low in straightness, and is different in direction from the first radiation. The scattering line causes a streak artifact in the image and affects the accuracy, resulting in inaccurate image . Therefore, the higher the ratio of the scattered ray, the more the accuracy of the photographed image is lowered.

Therefore, by providing the above-described gap holding member 20, scattering lines generated by the shielding means 10 can be absorbed into the air before the scattering line reaches the body in order to prevent the shot image from being affected, A streak artifact phenomenon that may occur in an image can be prevented. Since the second scattering line may occur in the gap holding member 20, it is preferable to use a porous sponge having a density similar to that of air. Also, in the case of the gap holding member, its thickness should be 10 to 40 mm. As can be seen from an experiment to be described later, a streak artifact may occur in a photographed image due to a scattering line generated by the shielding means 10 when the distance is less than 10 mm. When the distance exceeds 40 mm, This is because there is a problem that the patient is not tightly fixed to the patient due to its elasticity.

An adhesive means 30 is further provided on the bottom surface of the gap maintaining member 20 and serves to make the shielding means 10 and the gap maintaining member 20 to be fixed on the body do. Such an adhesive means 30 includes an adhesive tape 31 attached to a body part and a release paper 32 separated from the adhesive tape 31 in use. As described above, the adhesive tape 31 may be used as long as it can be adhered to the body.

Hereinafter, the effect of the medical image capture device 1 according to an embodiment of the present invention will be described in detail with reference to FIGS. 3 to 5. FIG. 3 to Fig. 5 are photographs of the head, neck, and chest of the PBU-60 (Kyoto, kagaku, Japan) photographed with a Brilliance CT 64-channel, a Philips CT apparatus. And the shielding means 10 was tested so that the radiation shielding rate could be maintained at 30%.

The thickness of the head was 5.00 mm, the X-ray tube voltage was 120 kv, the X-ray tube current was 200 mAs, the neck was the spiral plate, the cut thickness was 1.00 mm, the X-ray tube voltage was 120 kv, The chest was photographed with a spiral plate, a section thickness of 1.00 mm, an X-ray tube voltage of 120 kv, and an X-ray tube current of 89 mAs.

FIG. 3 is a photograph of a head part, in the case of a first image, taken without any protection, and the second image is obtained by using only a shielding unit 10 without a gap holding member 20. FIG. Images No. 3 through No. 8 are photographed using the present invention and images taken while changing the thickness of the gap holding member 20 to 2 mm, 4 mm, 6 mm, 10 mm, 12 mm, and 14 mm, respectively.

In the image # 1, no image is captured without the shielding means 10 and the gap holding member 20, so that a streak artifact phenomenon does not occur, and accurate image reading is possible. However, a part of the patient's body may be exposed to radiation exposure. In the image # 2, the shielding means 10 is used to prevent radiation exposure, but a streak artifact is generated, which makes it impossible to accurately read the image.

As can be seen from the images No. 3 to No. 8, it can be seen that the streak artifact phenomenon decreases as the thickness of the spacing member 20 increases. When the thickness of the spacing member 20 becomes 10 mm, It is confirmed that the same image as the first image is photographed. Therefore, it has been determined that it is preferable that the gap holding member 20 having a thickness of 10 mm in the case of the head portion is used together with the shielding means 10.

Next, FIG. 4 is a photograph of a neck region, FIG. 4 is a photograph of a first image taken without any protection, and images No. 2 through No. 8 are photographed using the present invention, The image is taken while changing to 2 mm, 4 mm, 8 mm, 16 mm, 20 mm, 24 mm, and 28 mm, respectively.

In the image # 1, no image is captured without the shielding means 10 and the gap retaining member 20, so that a streak artifact is not generated, so that accurate image reading is possible. However, a part of the patient's body is exposed to radiation exposure.

In the images 2 to 8, it can be seen that the streak artifact phenomenon decreases as the thickness of the spacing member 20 increases, and when the thickness of the spacing member 20 becomes 28 mm, It is confirmed that the same image as the first image is photographed. Thus, it has been determined that it is desirable that the gap holding member 20 having a thickness of 28 mm in the neck region be used together with the shielding means 10.

Next, FIG. 5 shows an image of a chest taken without a protection sheet in the case of the first image, and FIG. 5 shows a second image taken using only the shielding unit 10 without the gap holding member 20. Images No. 3 through No. 8 are photographed using the present invention and images taken while changing the thickness of the gap holding member 20 to 2 mm, 4 mm, 6 mm, 10 mm, 12 mm, and 14 mm, respectively.

As can be seen from the images 3 to 8, it can be seen that the streak artifact phenomenon decreases as the thickness of the gap holding member 20 increases. When the thickness of the gap holding member 20 becomes 14 mm, It is confirmed that the same image as the first image is photographed. Therefore, it has been determined that the gap holding member 20 having a thickness of 14 mm in the case of the head portion is preferably used together with the shielding means 10.

It is to be understood by those skilled in the art that the present invention may be embodied in many other forms without departing from the spirit and scope of the invention, It is therefore intended that the above-described embodiments be considered as illustrative rather than restrictive, and that all implementations within the scope of the appended claims and their equivalents are intended to be included within the scope of the present invention.

1,: Medical image taking
10: Shielding means
11: envelope
20:
30: adhesive means
31: Adhesive tape
32: release paper

Claims

Shielding means (10) comprising a contrast material; And
And a gap holding member 20 attached to the bottom surface of the shielding means 10 for spacing the shielding means 10 from the body part at a predetermined distance,
Wherein a thickness of the gap holding member (20) is 10 to 40 mm.

The method according to claim 1,
(30) for fixing the gap holding member (20) on the body on the bottom surface of the gap holding member (20).

The method of claim 2,
Characterized in that said shielding means (10) absorbs 10 to 40% of the radiation irradiated towards the body during CT imaging.

The method of claim 2,
Wherein the gap holding member (20) is made of a porous sponge having a density similar to that of air.

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