CN107613875B - Protective equipment for radiography - Google Patents
Protective equipment for radiography Download PDFInfo
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- CN107613875B CN107613875B CN201780001662.2A CN201780001662A CN107613875B CN 107613875 B CN107613875 B CN 107613875B CN 201780001662 A CN201780001662 A CN 201780001662A CN 107613875 B CN107613875 B CN 107613875B
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- A—HUMAN NECESSITIES
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- A—HUMAN NECESSITIES
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Abstract
The present invention discloses a protection device for radiography, which can realize more effective radiation protection for thyroid gland, which is an organ with the highest possibility of cancer occurrence, in the radiography for dental treatment, and further can shield the radiation of brain and eyeball parts in the head. The protective equipment for radiography according to the present invention includes: a front protection unit for shielding the radiation from the front part of the neck to protect the thyroid gland; a rear shield portion provided on the opposite side of the front shield portion to shield the thyroid gland from the radiation at a rear portion of the neck; a Support suit (Support Wear) that is wearable on the body and supports the front protector and the rear protector so that the front protector and the rear protector are disposed at a front portion and a rear portion of the neck, respectively; and a skin contact induction section for enhancing adhesion between at least one of the front shield section and the rear shield section and the skin, wherein a side section between the rear shield section and the front shield section is exposed to radiation.
Description
Technical Field
The present invention relates to a shield apparatus for radiography, and more particularly, to a shield apparatus for radiography, which can protect thyroid glands, which are organs having a high possibility of cancer occurrence, from radiation in radiographic imaging such as dental panoramic imaging or skull imaging, and can shield tissues in the head, for example, radiation of the brain and eyeball parts.
Background
In general, a radiographic apparatus (X-ray apparatus) senses radiation that has passed through a subject with a detector, images and views the interior of the subject, and is widely used for patient diagnosis in hospitals, baggage inspection in airports and the like, nondestructive inspection of buildings and civil structures, and the like.
The radiation has a harmful effect on the human body, and thus even if human tissues are exposed to a small amount of radiation, genes or cells may be deformed, which may cause various cancers, and if genetic variation occurs, it may be transmitted to the next generation without being limited to the first generation, and thus it is important to prevent exposure to excessive radiation or unnecessary exposure to radiation at the time of radiography.
Therefore, when radiographing a human tissue for the purpose of diagnosis or the like, it is necessary to wear a radiation protective clothing or a protective tape in order to prevent unnecessary regions other than the tissue requiring diagnostic information from being exposed to radiation, but there is no special protective harness for the examinee at present.
In addition, since a radiographic apparatus such as a Dental Panorama (Dental Panorama) used in a Dental hospital is used to provide an operator (dentist) with information on the size and shape of bones (cheek bones), the identification of anatomical variation of bones that varies along the vertical and horizontal axes, and information on lesion elements that exist in bones and information that may affect the operation, through various radiological examinations, it is important to provide the operator with image information that can provide the patient with an optimal operation and guide the long-term success after the operation, and thus, the patient can be treated in a standing procedure of a treatment plan and all subsequent procedures.
Most radiographic imaging methods are methods of obtaining an image by irradiating an anatomical structure of a region of interest with radiation (X-ray), and include, for example, radiographic images applied for dental treatment: transcribing images of alveolar bone and facial bone including teeth into a planar (2D) Panoramic radiographic image (hereinafter, referred to as a 'Panoramic image'); more precisely as a stereoscopic (3D) ct (computed tomography) image; and a projective measurement image (Cephalometric image) of the head of the patient taken from the front to the rear, from the rear to the front, from the left or right side, and the like.
In particular, a panoramic radiographic imaging method, which is one of extra oral (oral) radiographic inspection methods, is a radiographic imaging method mainly performed in dental hospitals, and as the prevalence of panoramic radiographic equipment in dentistry increases, the frequency of use thereof is increasing greatly, and is an inspection method that occupies a high proportion of national radiation exposure.
In the above radiographic imaging method, the thyroid gland located in the neck is a fragile organ that is highly likely to cause cancer due to radiation, and therefore, appropriate radiation protection is required for the thyroid gland, but the use of protective equipment, i.e., the wearing of protective clothing, has a problem that artificial shadows, particularly Metal artifacts (Metal artifacts), are generated in diagnostic images by the radiographic imaging method, and therefore, at present, appropriate protection cannot be performed at the time of radiographic imaging.
More specifically, even if the thyroid gland needs to be protected from radiation, when a radiation shielding member is provided on the outer periphery of the neck to protect the thyroid gland, the radiation shielding member forms an artificial shadow (artifact) on the panoramic image, and thus there is a limitation in the use of the protective equipment.
In radiography for diagnosis and treatment in the dental field, a problem caused by radiation exposure at the time of panoramic image photographing and a problem of artificial shading of a diagnostic image by radiation shielding will be described in more detail with reference to fig. 1a to 2 as follows.
When the panoramic image is shot, the following two shooting principles are applied to form an image: tomography (tomogry) in which a tube of radiation is rotated in a fan bone shape or a Cone (Cone) shape from a rear part of a patient to expose the radiation and continuously take images; scanography (scanography), images are scanned through a slit-shaped collimator and in time sequence.
Fig. 1a is a reference photograph showing, by way of example, a panoramic radiographic image taken at a normal imaging range, which is known to have an imaging range including cervical vertebrae, eyeball, temporal bone, maxilla, mandible, and hyoid bone.
Fig. 1b (a) shows a case where a panoramic image of the human body model (Phantom) is photographed in a state where the radiation shielding tool or device and other radiation protection tape are not worn in the human body model (Dental Head Phantom 76-606DX, CIRS co., USA) for image quality evaluation, and in this case, a panoramic image photographed in a normal photographing range can be obtained, but the image shown in fig. 1b (a) is a picture photographed from a state where the thyroid gland is not shielded from radiation as shown in fig. 1b (b), and thus it can be confirmed that the thyroid gland cannot be protected from radiation.
Fig. 2 (a) is a panoramic image captured with the human body model P for image quality evaluation worn with the radiation shielding protection equipment according to the comparative example, and fig. 2 (b) is front and back images of the human body model P for image quality evaluation provided with the radiation shielding protection equipment according to the comparative example worn with the human body model P for image (a) of fig. 2.
Disclosure of Invention
Technical problem
The purpose of the present invention is to provide a protective equipment for radiography, which can protect the thyroid gland, which is an organ vulnerable to radiation, from radiation, and can improve the quality of a diagnostic image by minimizing the occurrence of an obstacle image such as an artificial shadow (artifact) in a radiographic image in a large number of radiographic images including panoramic imaging.
Another object of the present invention is to provide a protection apparatus for radiography, which can perform additional radiation protection against tissues existing in the head, such as the brain and the eyeball, while protecting against radiation of the thyroid gland.
Technical scheme
In order to achieve the above object, one aspect of the present invention provides a radiation protection device for protecting a body from radiation emitted from a radiation imaging apparatus, and more particularly, provides a radiation protection suit.
A protection apparatus for radiography according to an aspect of the present invention includes: a front protection unit for shielding the radiation from the front part of the neck to protect the thyroid gland; a rear shield portion provided on the opposite side of the front shield portion to shield the thyroid gland from the radiation at a rear portion of the neck; a Support suit (Support Wear) that is wearable on the body and supports the front protector and the rear protector so that the front protector and the rear protector are disposed at a front portion and a rear portion of the neck, respectively; and a skin contact induction section for enhancing adhesion between at least one of the front shield section and the rear shield section and the skin, wherein a side section between the rear shield section and the front shield section is exposed to radiation.
The skin contact inducing portion includes: and an elastic band elastically supporting at least one of the front and rear guards to maintain elastic expansion between the front and rear guards.
The elastic band may connect the front guard and the rear guard. For example, one end of the elastic band may be connected to the front guard, and the other end of the elastic band may be connected to the rear guard.
At least one of the front guard and the rear guard may be detachably connected to the elastic band.
The protective equipment for radiography according to an aspect of the present invention further includes: and a rear support platform which is provided on the rear protection part and supports the rear protection part so as to realize the contact between the front surface of the rear protection part and the skin.
According to another aspect of the present invention, there is provided a protection apparatus for radiography, including: a front protection unit for shielding the radiation from the front part of the neck to protect the thyroid gland; a rear shield portion provided on an opposite side of the front shield portion to shield a rear portion of the neck from the radiation to protect the thyroid gland; a Support suit (Support Wear) that is wearable on the body and supports the front protector and the rear protector so that the front protector and the rear protector are disposed at a front portion and a rear portion of the neck, respectively; and a rear support table provided to the rear shield portion and supporting the rear shield portion so as to maintain contact between a front surface of the rear shield portion and the skin, wherein a side surface section between the rear shield portion and the front shield portion is exposed to radiation.
The rear support stand may support the rear guard to prevent the rear guard from tilting.
The rear support table may include: and a plate-shaped structure integrally formed with the rear protector and maintaining a predetermined angle with the rear protector to maintain the posture of the rear protector.
The rear support base may elastically support the rear shielding portion in the front direction, and may have a material capable of shielding radiation.
The protective equipment for radiography according to the present invention may further include: a head protection unit wearable on a head to protect the head from radiation. The head protection unit is capable of adjusting a radiation protection range.
The head protection unit includes: a radiation protection hood that is wearable on the head and has a rear head shield portion to protect a rear of the head; and a radiation Visor (Visor) movably provided to the head cap to adjust a radiation protection range of the head protection unit.
The radiation visor is coupled to the head cover in a manner of being rotatable in an up-down direction to adjust a lower protective boundary line of the head protective unit.
The rear protection part is arranged behind the front protection part in a manner that the rear protection part and the front protection part are opposite to each other: radiation protection is performed within a range of 6cm to the upper side and within a range of 8cm to the left and right sides, respectively, with reference to the spinous process of the seventh cervical vertebra.
More specifically, the rear guard is provided behind the front guard in such a manner as to oppose the front guard: the left side protective boundary line is a position facing rearward by 3cm or more in the peripheral direction of the neck from a left side longitudinal line passing through the left external ear hole in the up-down direction, the right side protective boundary line is a position facing rearward by 3cm or more in the peripheral direction of the neck from a right side longitudinal line passing through the right external ear hole in the up-down direction, and the upper side protective boundary line of the rear protective portion is no more than 4 cervical vertebrae.
Advantageous effects
The protective equipment for radiography according to the present invention functions as follows.
First, in order to effectively achieve a radiation shielding effect against the thyroid gland, which is an organ with a high possibility of occurrence of cancer, in radiography, the present invention brings a radiation protection portion for protecting the thyroid gland into close contact with the body, thereby preventing or minimizing excessive generation of artificial shadows or obstacle images in radiographic images.
Second, according to the present invention, not only effective protection of the thyroid gland but also appropriate protection of the brain and eyeball parts in the head, which are major organs covered with radiation at the time of radiography, can be achieved, so that safety can be further ensured from radiation at the time of radiography, and a sense of rejection or burden on radiography can be reduced.
Third, the protective equipment for radiography according to the present invention can be applied to the entirety of dental radiography such as intraoral radiography, extraoral radiography, head specification radiography, computed tomography, and so on, and therefore its usefulness is very high. That is, the protective equipment for radiography according to the present invention does not cause a problem of imaging the cervical vertebrae and the airway in panoramic imaging, mouth imaging, and head-size imaging, and thus can be positively applied to various radiographic imaging.
Fourthly, according to the present invention, when performing dental computed tomography (CBCT) imaging, since the region shielding the neck from radiation is 180 degrees or less, it is possible to minimize the quality degradation of the image and obtain an appropriate thyroid protection effect.
Fifth, according to the present invention, the present invention can be widely applied to radiation imaging of maxillofacial and cervical regions, in addition to panoramic imaging and dental computed tomography imaging.
Sixth, according to the present invention, radiation protection can be achieved for the brain and eyeball parts in the head, and the radiation shielding range can be adjusted like a shelter tent, so that the radiation protection range can be effectively set in correspondence to the variety of personal sizes or the purpose of radiation imaging.
Therefore, the present invention is a radiation protection product necessary for the entire radiation examination, and can effectively ensure the safety of the patient from the damage of the radiation and provide an accurate diagnostic image.
Drawings
A better understanding of the features and advantages of the present invention will be obtained by reference to the detailed description of embodiments of the invention and to the accompanying drawings, in which,
fig. 1a is a reference photograph showing a normally taken panoramic radiographic image;
fig. 1b (a) is a photograph of an image of a human body model (phantom) for evaluating image quality, and is a panoramic image photographed without wearing a protective tape that can shield radiation, and fig. 1b is a photograph of the front and back surfaces of the human body model for evaluating image quality;
fig. 2 (a) is a panoramic image captured with the human body model for image quality evaluation worn with the radiation shielding protective tape according to the comparative example, and fig. 2 (b) is front and back photographs of the human body model for image quality evaluation worn with the radiation shielding protective tape according to the comparative example;
fig. 3 is a view showing an embodiment of the protective equipment for radiation photographing according to the present invention, and is a front simulation view for explaining a wearing state for protecting the thyroid gland;
FIG. 4 is a back side simulated view of FIG. 3;
FIG. 5 is a side view of the simulation of FIG. 3;
fig. 6 is an expanded view showing an embodiment of the shield equipment for radiography according to the present invention;
fig. 7 is a reference photograph showing a state in which protective equipment for protecting the thyroid gland is worn on a human body model in order to provide an upper and lateral extension boundary line with reference to the spinous process of the seventh cervical vertebra;
fig. 8 is a side view of a simulation for explaining the difference of radiographic images according to the change in position of the rear shielding portion;
fig. 9 is a perspective view illustrating a rear shield portion and a rear support table of the shield equipment for radiography illustrated in fig. 6;
FIG. 10 is a cross-sectional view taken along line I-I of FIG. 9;
fig. 11a to 11e are reference photographs showing a relationship between a radiation protection range of the posterior protective section with the spinous process of the seventh cervical vertebra as a reference and a panoramic image;
fig. 12 is a front simulation view showing another embodiment of the shield equipment for radiography according to the present invention;
fig. 13 is a back simulation view of the protective equipment for radiography shown in fig. 12;
fig. 14 is a side simulated view of the protective equipment for radiography shown in fig. 12;
fig. 15 is a side view illustrating a state in which a radiation visor of the shield equipment for radiography illustrated in fig. 14 is raised upward.
Detailed Description
Hereinafter, preferred embodiments of the present invention that can specifically achieve the objects of the present invention are described with reference to the accompanying drawings. In describing the present embodiment, the same names and the same symbols are used for the same constituents, and additional description thereof is omitted hereinafter.
Before the embodiments of the present invention are explained, it is assumed that in the protection equipment for radiography, the components for blocking (shielding) radiation, for example, the components such as the front protection portion and the rear protection portion, have a material (radiation blocking material) capable of blocking radiation such as lead (Pb), and the support suit supporting the front protection portion and the rear protection portion may include the blocking material, and the components such as the front protection portion and the rear protection portion may obviously be covered with cloth, leather, synthetic resin, or the like.
[ example 1]
First, an embodiment of the shield equipment for radiography of the present invention will be specifically described with reference to fig. 3 to 10.
Fig. 3 is a diagram showing the protection equipment for radiation imaging according to the first embodiment of the present invention, and is a front simulation diagram for explaining a wearing state for protecting the thyroid gland, fig. 4 is a rear simulation diagram of fig. 3, fig. 5 is a side simulation diagram of fig. 3, and fig. 6 is an expanded view showing the protection equipment for radiation imaging according to the present invention.
Fig. 7 is a reference photograph showing a state in which a protective device for protecting the thyroid gland is worn on a human body model in order to provide upper and lateral extension boundary lines with respect to the spinous process of the seventh cervical vertebra, fig. 8 is a side view simulated by comparing a contact action with the skin for protecting the thyroid gland of the radiation protective device of the present invention with that of the conventional radiation protective device, and fig. 9 and 10 are diagrams showing a support structure of the rear protective portion.
Fig. 11a to 11e are reference photographs showing a relationship between a radiation protection range and a panoramic image, with the spinous process of the seventh cervical vertebra as a reference.
Referring to fig. 3 to 10, the protection equipment 1 for radiography according to the present embodiment (hereinafter, simply referred to as 'protection equipment') is based on a structure that shields radiation at a rear portion and a front portion of the neck and exposes a side section of the neck to radiation (a structure that allows radiation to pass through), and is structured such that a radiation protection portion that protects the thyroid is brought into close contact with the skin.
That is, in the present embodiment, the radiation protection device blocking the back portion of the neck is brought into close contact with the skin in order to protect the thyroid gland by radiation incident on the back of the neck, and the radiation protection device blocking the front portion of the neck is brought into close contact with the skin in order to protect the thyroid gland by secondary irradiation due to scattered rays of the radiation, so that it is possible to minimize the occurrence of artificial shadows (artifacts) in the radiographic image and to further improve the quality of the diagnostic image.
To this end, the protective equipment 1 according to an embodiment of the invention comprises: a front shielding section 110 that shields the radiation from a front portion of the Neck (tack); a Support suit (Support Wear)120 that supports the front guard; a back shielding part 130 provided to the support suit 120 to shield the radiation at a back part of the neck; a skin contact inducing part for reinforcing the close contact of at least one of the front guard 110 and the rear guard 130 with the skin.
The rear shielding portion 130 is disposed on the opposite side of the front shielding portion 110, and a side surface section between the front shielding portion 110 and the rear shielding portion 130 is exposed to radiation and allows the radiation to pass therethrough.
To explain this more specifically, the rear guard 130 is provided to the support suit 120 as follows: the radiation is blocked in a region behind a vertical line L passing through the left and right external ear holes in the up-down direction, i.e., the left and right vertical lines. The side section between the front shielding part 110 and the rear shielding part 130 may be formed by an empty region or may be blocked by a material that is transparent to radiation.
The skin contact inducing portion may be configured to contact the front protector 110 to the front of the neck or the rear protector 130 to the rear of the neck, but in this embodiment, the skin contact inducing portion may include an Elastic Band (Elastic Band)300 to elastically connect the front protector 110 and the rear protector 130 such that both the front protector 110 and the rear protector 130 are in contact with the neck, and the front protector 110 and the rear protector 130 may be elastically expanded by the Elastic Band 300.
Therefore, if the examinee wears the protective equipment, the front guard 110 can be closely attached to the front skin in front of the neck, and the rear guard 130 can be closely attached to the skin at the rear of the neck. One of the front guard 110 and the rear guard 130 may be detachably coupled to the skin contact inducing part, i.e., the elastic band 300, by a coupling means such as a hook and loop fastener, a hook, or a button.
In this embodiment, the side section between the front guard 110 and the rear guard 130 is blocked by the elastic band 300. Obviously, the elastic band 300 in the present embodiment is made of a material that is transparent to radiation. In other words, since the side section between the front shield 110 and the rear shield 130 is exposed to radiation, the elastic band 300 connecting the front shield 110 and the rear shield 130 is made of a material that is transparent to radiation.
One end of the elastic band 300 is connected to the front guard 110, and the other end of the elastic band 300 is connected to the rear guard 130. In other words, the elastic band 300 may be provided at the left and right sides of the neck, respectively, but is not limited thereto, and for example, the front guard 110 and the rear guard 130 may be fixed at the front and rear portions of the elastic band having a Loop (Loop) shape, respectively.
In addition, the protective equipment 1 according to the present embodiment may further include a rear support base 500 that supports the rear protective part 130, in addition to the skin contact induction part, specifically, the belt 300. The rear support platform 500 is provided to the support suit 120 to support the rear guard 130 so as to maintain contact between the front surface of the rear guard 130 and the skin (behind the neck).
The protective equipment for radiography according to the present invention may include at least one of the skin contact induction portion and the rear support table 500, and the present embodiment includes both the skin contact induction portion and the rear support table 500.
More specifically, the rear support platform 500 may be fixed to the support suit 120 to prevent the rear guard 130 from being wetted. For example, the rear support 500 may be built into the support suit 120, and induce or maintain a front inclination (or referred to as 'front deflection') of the rear shield 130, thereby having an ergonomic shape such that the rear shield 130 is in close contact with the skin.
The rear support 500 may be made of a material that can shield radiation, and if a structure including the rear shielding portion 130 and the rear support 500 is referred to as a rear frame, a front surface of the rear frame has a curved shape that matches a curve of a neck portion or the like.
For example, the rear support base 500 is a plate-shaped structure, and is integrally formed with the rear guard 130 to maintain the posture of the rear guard 130 constant. In other words, the rear support stand 500 is mounted (Mount) on the upper portion of the back while maintaining a predetermined angle with the guard 130. In this case, the rear guard 130 may be built in the upper portion of the rear support platform 500, may be externally fixed to the upper portion of the rear support platform 500, and may be integrally formed with the rear support platform 500.
As described above, if the rear shielding part 130 is closely attached to the back of the neck by the skin contact inducing part 300 and/or the rear support 500, as shown in fig. 8, the radiation protection range of the rear shielding part 130 can be stably maintained, and an increase in artificial shadow due to an unstable enlargement (b- - > b') of the shielding range caused by the rear shielding part 130 being tilted backward and approaching the radiation source (e.g., the position shown by the existing position of fig. 8) can be prevented.
Referring to fig. 9 and 10, an embodiment of the rear support stand 500 may elastically support the rear guard 130 in a forward direction. For example, the rear support stage 500 includes a base support part 500a and an upper support part 500b, and a radiation shield forming the rear shielding part 130 may be fixed to the upper support part 500b in an internal or external manner. The upper support part 500b is supported by the base support part 500 a.
Further, if the upper support part 500b is rotatably coupled to the base support part 500a and supported by an elastic member 510 such as a torsion spring, the skin adhesion of the upper support part 500b can be improved.
For example, if the torsion spring 510 is provided at the rotation shaft 520 forming the rotation center of the upper support part 500b, and one end 511 of the torsion spring is supported by the base support part 500a, and the other end 512 of the torsion spring is supported by the upper support part 500b, the upper support part 500b receives a restoring force to an initial position.
More specifically, when the upper support part 500b is connected to the base support part 500a so as to be inclined forward with respect to the surface curvature of the portion where the back and the neck are connected, such that the initial angle formed by the upper support part 500b and the base support part 500a forms an obtuse angle larger than the surface curvature, which is the connection curvature of the neck and the back, if the examinee wears the protective equipment 1, the upper support part 500b is pressed backward, and due to the reaction thereof, the upper support part 500b is elastically formed forward, and as a result, the skin adhesion of the rear protective part 130 can be enhanced.
Obviously, the upper support part 500b and the base support part 500a may be connected by a plate spring, and in the present embodiment, the upper support part 500b itself functions as a radiation shielding function, and thus the upper support part 500b may be referred to as the rear shielding part 130. In this case, the upper support part 500b and the base support part 500a have a structure capable of supporting bones, and the entire upper support part 500b is made of a radiation shielding material, so that the upper support part itself can function as the rear shielding part 130 as described above. In the present embodiment, the rear guard 130 is fixed to the front surface of the upper support 500b, but it is obvious that the present invention is not limited thereto, and for example, the rear guard may be built in the upper support.
The rear support 500, more specifically, the base support 500a and the upper support 500b may be made of a material having a stable shape, such as metal or plastic, and may be formed in an ergonomic shape to be curved and matched with the surface of the back and neck in order to guide the front inclination of the rear protector 130.
In the present embodiment, the configuration in which the skin contact inducing portion such as the elastic band 600 and the rear support base 500 are provided at the same time has been described as a component for enhancing the skin adhesion of the rear protector 130, but as described above, it is obvious that only one of the elastic band 300 and the rear support base 500 may be applied to the protection equipment 1.
In addition, referring to fig. 4, the rear protective part 130 of the protective equipment 1 according to the present embodiment has shielding ranges W up to 9cm or less, specifically up to 8cm or less, to the left and right sides, respectively, with reference to the spinous process of the seventh cervical vertebra, and has a shielding range H up to 6cm or less in the upward direction with reference to the spinous process of the seventh cervical vertebra.
In other words, the rear shielding part 130 shields the left and right sides by 8cm with respect to the spinous process of the seventh cervical vertebra, respectively, and shields the upper part thereof by 6cm with respect to the spinous process of the seventh cervical vertebra, but when considering that physical conditions (length, thickness, etc. of the neck) of the patient may be different, a shielding range of the rear part of the neck, that is, a radiation protection range of the rear shielding part 130 may be expressed in different ways.
For example, in the case of providing the left and right shielding ranges of the rear shielding part 130, the shielding ranges (radiation shielding ranges) may be provided based on a vertical line L passing through the left and right external ear holes in the vertical direction, and a region of 2cm, more preferably 3cm, behind the vertical line (circumferential direction of the neck) will be the maximum left/right shielding boundary line for the rear portion of the neck, and the left and right shielding ranges for the rear portion of the neck need to be provided within this range. In other words, the left and right shielding ranges of the rear portion of the neck are determined within a range not exceeding an area 3cm rearward from the longitudinal line.
This is because the following problems are considered: when the shielding structure at the rear of the neck, that is, the left and right ends of the rear guard 130, which will be described later, are located at positions 3cm, particularly 2cm, forward of the rear position in the outer circumferential direction of the neck with respect to the vertical line L, the degree of occurrence of artificial shadows in the panoramic image increases. For example, if the shielding range extends beyond the 2cm area behind the vertical line and enters the front, an artificial shadow is excessively generated when panoramic radiation is captured.
Therefore, it is preferable that the left and right shielding ranges of the rear part of the neck are set within a range of 8cm on the left and 8cm on the right with respect to the spinous process of the seventh cervical vertebra, and are set so as not to be shielded within a range of 3cm on the rear with respect to the vertical line passing through the external ear hole.
Then, as for the upper shielding range of the neck posterior part, the shielding range (shielding height) may be set with reference to the No. 4 cervical vertebrae, and more specifically, the upper shielding range of the neck posterior part of the posterior guard may be set to shield only up to the No. 4 cervical vertebrae. This is because, in the case of masking to above the No. 4 cervical vertebrae, artificial shadows are excessively generated in the panoramic image.
Therefore, the shielding range above the posterior region of the neck is preferably set to shield the spinous process of the seventh cervical vertebra within 6cm of the upper region thereof, and not to shield the cervical vertebra beyond the 4 th cervical vertebra to the upper region thereof (to shield the cervical vertebra up to a height of 4 th cervical vertebra or less).
In short, in the protection equipment 1 for radiography of the present invention, the rear protection part 130 is provided at the rear part of the support suit 120 in such a manner as to shield the range within 8cm of each of the left and right sides thereof with reference to the spinous process of the seventh cervical vertebra. Further, if the left and right shielding ranges of the rear shielding part 130 are expressed with reference to the external ear hole, the width of the rear shielding part may be determined such that the distance from the vertical line passing through the right external ear hole to the right end of the rear shielding part is 3cm or more and the distance from the vertical line passing through the left external ear hole to the left end of the rear shielding part is 3cm or more.
The height of the rear guard 130 may be set to cover the range within 6cm of the upper portion of the spinous process of the seventh cervical vertebra. If explained on another basis, the height of the rear guard may be set to be below the No. 4 cervical vertebrae.
In the present embodiment, the support suit 120 is configured to be worn on a human body so as to connect the front fender 110 and the rear fender 130, to support the front fender 110 and the rear fender 130, and to cover the shoulders of the subject.
In addition, according to the present embodiment, the form and size of the front guard 110 are configured to be required specifications according to body conditions, and for example, the width and height of the thyroid gland may be equal to the minimum width and height of the front guard 110, since the front guard 110 has a width of 7cm or less and a maximum height of 10cm or less, preferably 7cm or less, and is a size capable of covering the entire area just in front of the thyroid gland.
The support suit 120 may be formed to extend downward from the neck to shield the lung field and the mediastinum from radiation, and a detachable structure such as velcro 121 or snap fasteners may be used on the front surface of the support suit 120 to attach and fix the support suit 120.
The protective equipment for radiography 1 according to the present embodiment configured as described above functions as follows.
The protection equipment 1 according to the present embodiment effectively protects the thyroid gland from radiation when taking a panoramic image, and closely adheres the front guard 110 and the rear guard 130 to the skin, thereby minimizing artificial shadows that adversely affect the panoramic image.
In addition to panoramic imaging, the protective equipment 1 according to the present embodiment is widely used for computed tomography for dentistry, radiography of the maxillofacial and cervical regions, and the like, and can effectively secure the safety of a patient from the damage of radiation and provide accurate diagnostic images.
Hereinafter, a process of deriving the shielding range for the thyroid gland of the protective equipment 1 for radiography according to the aspect of the present embodiment will be described.
First, in order to determine the boundary line of the thyroid gland and the head protective band extending upward from the spinous process (spinal process) of the seventh cervical vertebra (cervical spine) which exists close to the skin and is therefore easily perceived by the touch, the upper boundary line of the thyroid protective band is provided at a position at a distance of 6cm, 7cm, 8cm, or 9cm from the spinous process in the posterior region of the patient in which the radiation is directly irradiated to the skin when the panoramic radiation is captured.
In order to provide the thyroid protection band, in particular, the extended boundary lines (left boundary line and right boundary line) of the rear protection portion 130 in the lateral direction, the extended ranges of 1cm, 2cm, 3cm, and 4cm (the distances from the spinous processes are 9cm, 8cm, 7cm, and 6cm, respectively) are determined backward from the vertical line l (vertical line) passing through the external auditory canal (external audio media), that is, the external auditory hole, and the occurrence state of the artificial shadow displayed in the panoramic image is observed.
That is, the relationship between the upward and lateral extension ranges of the protection equipment 1 for radiation imaging for protecting the thyroid gland based on the spinous process of the seventh cervical vertebra and the panoramic image was examined by an experiment using the human body model P (Dental Head Phantom model 76-606DX, CIRS co., USA), and the upper limit line (upper limit) and the lateral extension limit lines (left and right limit lines) were provided with the spinous process of the seventh cervical vertebra as a reference.
First, the relationship between the upward and lateral extension ranges of the protection equipment 1 for radiation imaging for protecting the thyroid gland and the panoramic image is observed by various experimental examples, and then the relationship between the form of the radiation protection equipment for protecting the thyroid gland and the radiation exposure amount on the skin surface of the thyroid gland region is observed.
1. Upward and lateral extension of radiation protection equipment for protecting thyroid and panoramic image
Relation between
[ Experimental example 1]
Referring to fig. 11a, the extent of the shadow generated as a result of photographing the panoramic image after the arrangement as described above is as shown in fig. 9a, in which the upward extending range of the phantom P is set to 9cm and the lateral extending range of the phantom P is set to 1cm rearward (i.e., 9cm from the spinous process of the seventh cervical vertebra) from the external ear hole (vertical line L, the same applies hereinafter) and 1cm forward (i.e., 11cm from the spinous process of the seventh cervical vertebra) from the external ear hole.
A real image due to shielding of radiation protection equipment for protecting the thyroid gland is observed from the left side of the panoramic image, and a virtual image due to the shielding is observed from the right side, and thus it is confirmed that the diagnostic image is adversely affected.
[ Experimental example 2]
Referring to fig. 11b, the panoramic image was photographed with the upward extending boundary line of the phantom P set to 8cm and the lateral extending boundary line set to 2cm from the left and right sides of the phantom P to the rear of the external ear hole (i.e., 8cm from the spinous process of the seventh cervical vertebra) based on the spinous process position of the seventh cervical vertebra, and as a result, the degree of the shadow of the panoramic image was as shown in fig. 11 b.
[ Experimental example 3]
Referring to fig. 11c, the panoramic image was photographed with the upward extending boundary line of the phantom P set to 7cm and the lateral extending boundary line set to 3cm from the left and right sides of the phantom P to the rear of the external ear hole (i.e., 7cm from the spinous process of the seventh cervical vertebra) based on the spinous process position of the seventh cervical vertebra, and as a result, the degree of the shadow of the panoramic image was as shown in fig. 11 c.
[ Experimental example 4]
Referring to fig. 11d, the panoramic image was photographed with the upward extending boundary line of the phantom P set to 6cm and the lateral extending boundary line set to 2cm from the left and right sides of the phantom P to the rear of the external ear hole (i.e., 8cm from the spinous process of the seventh cervical vertebra) based on the spinous process position of the seventh cervical vertebra, and as a result, the degree of the shadow of the panoramic image was as shown in fig. 11 d.
[ Experimental example 5]
Referring to fig. 11e, the panoramic image was photographed with the upward extending boundary line of the phantom P set to 6cm and the lateral extending boundary line set to 3cm from the left and right sides of the phantom P to the rear of the external ear hole (i.e., 7cm from the spinous process of the seventh cervical vertebra), and as a result, the degree of the shadow of the panoramic image was as shown in fig. 11 e.
The appearance of the artificial shadow displayed on the panoramic radiographic image according to the shape of the thyroid gland protection zone observed based on the above experimental results is as follows.
When the spinous process of the seventh cervical vertebra is increased by 6cm, an artificial shadow is formed on the lower edge of the lower jaw spaced apart from the root end portion of the lower jaw anterior tooth portion, but the artificial shadow does not appear in the image of the lower jaw anterior tooth portion and the alveolar bone, and when the spinous process of the seventh cervical vertebra is increased by 7cm, an artificial shadow is formed on the lower jaw anterior tooth portion and the root end portion.
Further, when the boundary line extending laterally of the thyroid protection band is set to 1cm (9 cm from the spinous process of the seventh cervical vertebra) rearward with respect to the external ear hole, an artificial shadow by the real image and the virtual image appears, and when the lateral boundary of the thyroid protection band is set to 2cm, particularly 3cm (8 cm, 7cm from the spinous process of the seventh cervical vertebra) rearward with respect to the external ear hole, an artificial shadow by the real image does not appear.
2. Irradiation of skin surface of thyroid gland part according to form of protective equipment for protecting thyroid gland
Measurement of
Preliminary experiments for examining the amount of radiation exposure on the skin surface were performed based on the thyroid region in the form of protective equipment for protecting the thyroid gland. As shown in table 1 below, the radiation dose on the thyroid surface was found to be 87.4mR when the radiation protection device for protecting the thyroid gland was not worn, 80.7mR when the radiation protection device was protected to the 6cm upper position with respect to the spinous process of the seventh cervical vertebra and protected to the 3cm rear position with respect to the external ear canal, and 73.9mR, i.e., the lowest radiation dose when the radiation protection device was protected to the 7cm upper position and protected to the 2cm rear position of the external ear canal.
[ Table 1]
Surface exposure of thyroid according to the form of radiation protection equipment for protecting thyroid:
as shown in table 2 below, the attenuation effect of the thyroid gland surface radiation dose according to the form of the radiation protection device for protecting the thyroid gland was confirmed to be 7.7% when the radiation protection device was protected to the 6cm position upward with respect to the spinous process of the seventh cervical vertebra and to the 3cm position rearward with respect to the external ear hole, and was confirmed to be 16.1% and the highest according to the attenuation effect of the thyroid gland exposure when the radiation protection device was protected to the 7cm position vertically upward and to the 2cm position rearward of the external ear hole.
[ Table 2]
The attenuation effect is given by the following mathematical formula: the attenuation effect is (a-B)/a × 100, and in the above formula, a is an exposure amount when radiation protection equipment for protecting the thyroid gland is not worn, and B is an exposure amount according to the form of the radiation protection equipment for protecting the thyroid gland.
Based on the above results, the radiation protection equipment for protecting the thyroid gland, which can be used when performing panoramic photography, has the following configuration, and therefore, the radiation protection effect on the thyroid gland is optimal with the minimum occurrence of artificial shadows that adversely affect panoramic images: the extension boundary line of the posterior protective part 130 provided at the posterior part of the patient's neck for shielding radiation is protected to the 6cm position upward and the 8cm position sideward with respect to the spinous process of the seventh cervical vertebra.
Further, a front protection unit 110 for shielding the Thyroid cartilage (below the Thyroid cartilage) which is the outer side of the skin where the Thyroid gland is present is disposed in front of the human body, so that the Thyroid gland can be protected from secondary scattered radiation (indirect radiation) and direct radiation generated during panoramic imaging.
As described above, the protection equipment according to the present embodiment is configured to shield radiation to a position 6cm upward and 8cm lateral with respect to the spinous process of the seventh cervical vertebra in the rear of the neck portion at the time of panoramic imaging, and shield the Thyroid cartilage (below the Thyroid cartilage) which is the outer side of the skin in which the Thyroid gland is present in the front of the neck portion from radiation, and to improve the skin adhesion of the radiation protection portion, specifically, the front protection portion and the rear protection portion, thereby being more effective in protecting the Thyroid gland and minimizing artificial shadows.
[ example 2]
Hereinafter, another embodiment (second embodiment) of the protective equipment for radiography according to the present invention is explained with reference to fig. 12 to 15.
Referring to fig. 12 to 15, the protective equipment for radiation imaging according to the present embodiment is configured to include a thyroid gland protective unit to which the above-described embodiment (first embodiment) can be applied as well, and a head protective unit.
That is, the protective equipment according to the present embodiment includes the head guard unit 700 in addition to the protective equipment 1, i.e., the thyroid guard unit, explained in the above-described embodiment. The head protection unit 700 is wearable on the head, i.e., the head, so as to be able to protect tissues existing on the head, specifically tissues such as the brain and the eyeball, under radiation, and to enable body wearing relatively independently of the thyroid protection unit 1.
Therefore, the present embodiment protects the thyroid gland, and in addition, can achieve radiation protection for portions that are not the subject of image interpretation at the time of radiation imaging and are included in the radiation irradiation range, for example, the brain and eyeball portions.
The head protection unit 700 is configured to cover at least a part of the head, and includes a rear head shielding portion for shielding the rear of the head from radiation. For example, the posterior cranial shield may shield at least a portion of the parietal lobe, and thus may shield the size of the occipital and/or temporal lobe.
The head guard unit 700 according to the present embodiment is a structure capable of adjusting a radiation protection range, and includes: a head cover (head cover)710 having the above-described rear head shielding part and having a structure wearable on the head, such as a cap structure; a radiation Visor (Visor)720 movably provided to the head cover 710 so as to adjust a radiation protection range of the head protection unit 700.
In the present embodiment, the head cover 710 exposes the upper side and the left and right sides of the frontal lobe to radiation and is worn on the head of the subject by means of the head band 900, but the present invention is not limited thereto, and the head cover 710 may cover the front and rear of the head as a whole within a range that does not affect an image to shield the outer contour of the frontal lobe from radiation.
The radiation visor 720 is a component for blocking radiation, and in the present embodiment, the radiation visor 720 is coupled to the head cover 710 so as to be rotatable in the vertical direction, and adjusts the lower protective boundary line of the head protection unit 700. That is, the region between the lower barrier line of the head cover 710 and the upper barrier line of the rear barrier 130 can be additionally blocked.
In the present embodiment, the radiation visor 720 is hinged to both sides of the hood 710 so as to further shield the radiation of the hood 710, but the radiation visor may be configured to be slidable along the hood 710. Also, the headband 900 may be constructed using a band having elasticity. The radiation visor 720 can protect the occipital lobe, temporal lobe and eyeball from radiation incident at the rear of the head.
In addition, the rear support platform 500 may further include a shoulder rest 500c for reinforcing the maintenance of the position of the rear support platform 500. The shoulder rest 500c is a curved type extending downward from the base support 500a to the chest side through the shoulder so as to rest on both side shoulders, and reinforces a supporting force to the rear guard 130.
As described above, according to the present embodiment, not only effective protection against the thyroid gland at the time of radiography but also appropriate protection against the brain and eyeball parts in the head can be achieved, and therefore, the safety of the patient can be further ensured from the danger of radiation at the time of radiography.
In particular, the head protection unit 700 according to the present embodiment can increase or decrease the radiation shielding range behind the head, and thus can protect the tissues in the head in a range that does not adversely affect the resulting image, taking into account the head size of the patient and the radiographic conditions.
For example, when performing a panoramic reflection ray diagnosis, assuming that a radiation source radiates radiation upward such that a central radiation forms a predetermined angle, for example, an inclination angle of about 5 degrees or more, upward from an X-ray tube (X-ray tube), the head protection unit 700 according to the present embodiment can protect the brain by means of the head cover, i.e., the rear head shield, and protect the eyeball by means of the radiation visor 720.
As described above, the embodiments according to the present invention are explained, and it is obvious to those having ordinary knowledge in the art that the embodiments can be embodied in other specific forms than the embodiments explained above without departing from the object or scope of the present invention. Therefore, the above-described embodiments should not be construed as limiting, but rather as illustrative, and the present invention is not limited to the above description, but may be modified within the scope of the appended claims and equivalents thereof.
Industrial applicability
The present invention relates to a radiation protection device, and more particularly, to a protection suit (radiation protection suit) for protecting a body during X-ray imaging, and is applicable to the field of medical radiation protection suits and radiographic imaging.
Claims (23)
1. A protective equipment for radiation imaging for protecting a body against radiation emitted from a radiation imaging device, comprising:
a front protection unit for shielding the radiation from the front part of the neck to protect the thyroid gland;
a rear shield portion provided on an opposite side of the front shield portion to shield a rear portion of the neck from the radiation to protect the thyroid gland;
a support suit that can be worn on the body and supports the front protector and the rear protector so that the front protector and the rear protector are disposed at a front portion and a rear portion of the neck, respectively;
a skin contact induction part for enhancing the close contact between at least one of the front protection part and the rear protection part and the skin;
a head protection unit wearable on a head to protect the head under radiation; and
a rear support table provided to the rear protector and supporting the rear protector to maintain contact between a front surface of the rear protector and the skin,
wherein the head protection unit includes:
a radiation protection hood that is wearable on the head and has a rear head shield portion to protect a rear of the head; and
a radiation visor movably provided to the head cover to adjust a radiation protection range of the head protection unit,
wherein the radioactive ray brim moves up and down along the rear edge of the hood to adjust the rear shielding range of the head protection unit,
the side section between the rear shield portion and the front shield portion is exposed to radiation.
2. The protective equipment for radiography according to claim 1,
the skin contact inducing portion includes: and the elastic belt elastically supports at least one of the front protection part and the rear protection part to realize elastic expansion between the front protection part and the rear protection part.
3. The protective equipment for radiography according to claim 2,
one end of the elastic belt is connected with the front protection part, and the other end of the elastic belt is connected with the rear protection part.
4. The protective equipment for radiography according to claim 2 or 3,
at least one of the front guard and the rear guard is detachably connected to the elastic band.
5. The protective equipment for radiography according to claim 1,
the rear support stand supports the rear protection part to prevent the rear protection part from being inclined.
6. The protective equipment for radiography according to claim 5,
the rear support table includes: and a plate-shaped structure integrally formed with the rear protector and maintaining a predetermined angle with the rear protector to maintain the posture of the rear protector.
7. The protective equipment for radiography according to claim 1,
the rear support platform elastically supports the rear protection part forward.
8. The protective equipment for radiography according to claim 1,
the rear support is capable of shielding radiation.
9. The protective equipment for radiography according to claim 1,
the head protection unit is capable of adjusting a radiation protection range.
10. The protective equipment for radiography according to claim 1,
the radiation visor is coupled to the head cover in a manner of being rotatable in an up-down direction to adjust a lower protective boundary line of the head protective unit.
11. The protective equipment for radiography according to claim 1,
the rear protection part is arranged behind the front protection part in a manner that the rear protection part and the front protection part are opposite to each other: radiation protection is performed within a range of 6cm on the upper side and within 8cm on each of the left and right sides with respect to the spinous process of the seventh cervical vertebra.
12. The protective equipment for radiography according to claim 1,
the rear protection part is arranged behind the front protection part in a manner that the rear protection part and the front protection part are opposite to each other:
the left side protective boundary line is a position facing rearward by 3cm or more in the peripheral direction of the neck from a left side longitudinal line passing through the left external ear hole in the up-down direction, the right side protective boundary line is a position facing rearward by 3cm or more in the peripheral direction of the neck from a right side longitudinal line passing through the right external ear hole in the up-down direction, and the upper side protective boundary line of the rear protective portion is no more than 4 cervical vertebrae.
13. A protective equipment for radiation imaging for protecting a body against radiation emitted from a radiation imaging device, comprising:
a front protection unit for shielding the radiation from the front part of the neck to protect the thyroid gland;
a rear shield portion provided on an opposite side of the front shield portion to shield a rear portion of the neck from the radiation to protect the thyroid gland;
a support suit that can be worn on the body and supports the front protector and the rear protector so that the front protector and the rear protector are disposed at a front portion and a rear portion of the neck, respectively; and
a rear support platform provided on the rear protection part and supporting the rear protection part to maintain contact between the front surface of the rear protection part and the skin,
the side section between the rear shield portion and the front shield portion is exposed to radiation.
14. The protective equipment for radiography according to claim 13,
the rear support stand supports the rear protection part to prevent the rear protection part from being inclined.
15. The protective equipment for radiography according to claim 14,
the rear support table includes: and a plate-shaped structure integrally formed with the rear protector and maintaining a predetermined angle with the rear protector to maintain the posture of the rear protector.
16. The protective equipment for radiography according to claim 13,
the rear support platform elastically supports the rear protection part forward.
17. The protective equipment for radiography according to claim 13,
the rear support is capable of shielding radiation.
18. The protective equipment for radiography according to claim 13, further comprising:
a head protection unit wearable on a head to protect the head from radiation.
19. The protective equipment for radiography according to claim 18,
the head protection unit is capable of adjusting a radiation protection range.
20. The protective equipment for radiography according to claim 19,
the head protection unit includes:
a radiation protection hood that is wearable on the head and has a rear head shield portion to protect a rear of the head; and
and a radiation visor movably provided to the head cover to adjust a radiation protection range of the head protection unit.
21. The protective equipment for radiography according to claim 20,
the radiation visor is coupled to the head cover in a manner of being rotatable in an up-down direction to adjust a lower protective boundary line of the head protective unit.
22. The protective equipment for radiography according to claim 13,
the rear protection part is arranged behind the front protection part in a manner that the rear protection part and the front protection part are opposite to each other: radiation protection is performed within a range of 6cm on the upper side and within 8cm on each of the left and right sides with respect to the spinous process of the seventh cervical vertebra.
23. The protective equipment for radiography according to claim 13,
the rear protection part is arranged behind the front protection part in a manner that the rear protection part and the front protection part are opposite to each other:
the left side protective boundary line is a position facing rearward by 3cm or more in the peripheral direction of the neck from a left side longitudinal line passing through the left external ear hole in the up-down direction, the right side protective boundary line is a position facing rearward by 3cm or more in the peripheral direction of the neck from a right side longitudinal line passing through the right external ear hole in the up-down direction, and the upper side protective boundary line of the rear protective portion is no more than 4 cervical vertebrae.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2016-0042014 | 2016-04-06 | ||
| KR1020160042014A KR101853275B1 (en) | 2016-04-06 | 2016-04-06 | Radiation Protection Equipment for Radiography |
| PCT/KR2017/003761 WO2017176061A1 (en) | 2016-04-06 | 2017-04-06 | Protective equipment for radiographic imaging |
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| Publication Number | Publication Date |
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| CN107613875A CN107613875A (en) | 2018-01-19 |
| CN107613875B true CN107613875B (en) | 2021-08-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201780001662.2A Active CN107613875B (en) | 2016-04-06 | 2017-04-06 | Protective equipment for radiography |
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| Country | Link |
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| KR (1) | KR101853275B1 (en) |
| CN (1) | CN107613875B (en) |
| WO (1) | WO2017176061A1 (en) |
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| KR102321723B1 (en) * | 2021-02-09 | 2021-11-03 | 대구보건대학교산학협력단 | Radiation shield clothes |
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| JP2012225702A (en) * | 2011-04-18 | 2012-11-15 | Japan Health Science Foundation | Radiation protector |
| KR101358290B1 (en) * | 2012-11-15 | 2014-02-04 | 경희대학교 산학협력단 | Thyroid protector from radiation for radiography |
| KR20150009812A (en) * | 2013-07-17 | 2015-01-27 | 경희대학교 산학협력단 | Radiation Protection Equipment for Radiography |
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| KR20180028419A (en) * | 2018-01-30 | 2018-03-16 | 주식회사 디알뷰 | Radiation Protection Equipment for Radiography |
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| US7686755B2 (en) | 2006-06-19 | 2010-03-30 | Xoft, Inc. | Radiation therapy apparatus with selective shielding capability |
| US20080272318A1 (en) * | 2007-05-01 | 2008-11-06 | Worldwide Innovations & Technologies, Inc. | Radiation attenuating head cover |
| US20110272605A1 (en) * | 2010-05-10 | 2011-11-10 | Cohen Todd J | Shielded surgical garment |
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2016
- 2016-04-06 KR KR1020160042014A patent/KR101853275B1/en active IP Right Grant
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2017
- 2017-04-06 WO PCT/KR2017/003761 patent/WO2017176061A1/en active Application Filing
- 2017-04-06 CN CN201780001662.2A patent/CN107613875B/en active Active
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| US5038047A (en) * | 1990-03-19 | 1991-08-06 | Still Shirley S | Radiation shield hood for the head and neck |
| CN201516045U (en) * | 2009-09-10 | 2010-06-30 | 汪荣 | Thyroid neck protection and chest stand thereof |
| JP2012225702A (en) * | 2011-04-18 | 2012-11-15 | Japan Health Science Foundation | Radiation protector |
| KR101358290B1 (en) * | 2012-11-15 | 2014-02-04 | 경희대학교 산학협력단 | Thyroid protector from radiation for radiography |
| KR20150009812A (en) * | 2013-07-17 | 2015-01-27 | 경희대학교 산학협력단 | Radiation Protection Equipment for Radiography |
| KR20160020871A (en) * | 2014-08-14 | 2016-02-24 | 전북대학교산학협력단 | A medical single collar and vest radiation protector |
| KR20180028419A (en) * | 2018-01-30 | 2018-03-16 | 주식회사 디알뷰 | Radiation Protection Equipment for Radiography |
Also Published As
| Publication number | Publication date |
|---|---|
| KR101853275B1 (en) | 2018-06-20 |
| CN107613875A (en) | 2018-01-19 |
| WO2017176061A1 (en) | 2017-10-12 |
| KR20170114662A (en) | 2017-10-16 |
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