JP2009008445A - Radiation medical installation and radiation shield glass plate - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To disable the mutual visibility between facing radiation rooms in the state of mutual visibility between a radiation room and a monitoring space such as a monitoring room. <P>SOLUTION: In a radiation medical installation which is equipped with the monitoring room 1 where a monitor resides and radiation rooms 2a and 2b which are located opposite to each other with the monitoring room 1 between them and make a subject undergo radiotherapy or radiography inside and where the monitoring room 1 and each of the radiation rooms 2a and 2b are partitioned between them by forming partitions 3a and 3b on both sides of the monitoring room 1 and some or all of the partitions 3a and 3b are made of radiation shield glass plates 4a and 4b; polarizing films 5a and 5b are pasted on the radiation shield glass plates 4a and 4b and the polarizing direction of the polarizing film 5a pasted on the radiation shield glass plate 4a on one side of the monitoring room 1 is made orthogonal to the polarizing direction of the polarizing film 5b pasted on the radiation shield glass plate 4b on the other side of the monitoring room 1. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a radiological medical facility for performing radiotherapy or radiological examination on a subject, and a radiation shielding glass plate used in the radiological medical facility.

  In recent years, medical facilities that perform treatments and examinations using radiation such as X-rays and γ-rays are increasing along with advances in medical technology and medical equipment. Examination and treatment using X-rays include angiography and X-ray CT imaging in addition to general imaging of the chest and abdomen. On the other hand, examination / treatment using γ-ray includes PET examination and treatment using radioisotope.

  Surveillants such as doctors and clinical technologists who perform medical practices using such radiation are exposed to more radiation than ordinary people because they perform many tests (including diagnosis) and treatment per day. There is a fear. For this reason, radiation is appropriately shielded between a radiation room where treatment or examination using radiation is performed on the subject and a monitoring room where the monitor monitors the state of the subject in the radiation room. There is a need.

  Therefore, a measure may be taken to prevent radiation from entering the monitoring room by completely partitioning the radiation room and the monitoring room with a partition wall made of concrete or the like. In this case, the situation in the radiation room is monitored by a camera installed inside the radiation room.

  However, in such an equipment configuration, since the supervisor cannot be directly visually recognized from the subject in the radiation room, there may be a problem that the subject feels loneliness and anxiety.

Therefore, a part or all of the partition wall that partitions between the radiation room and the monitoring room is formed of a radiation shielding glass plate (for example, see Patent Documents 1 to 3 below), so that radiation enters the monitoring room. In many cases, measures are taken to reduce the feeling of loneliness and anxiety of the subject so that the subject in the radiation room can be directly seen from the subject in the radiation room.
Japanese Patent Application No. 4-303050 Japanese Patent Laid-Open No. 2003-315489 JP 2003-315490 A

  By the way, in recent years, with an increase in the number of subjects who undergo radiotherapy and radiological examinations, medical facilities including a plurality of radiation rooms in which such treatment and examination are performed are increasing. Normally, one monitoring room is required for one radiation room, but such a layout increases the occupied space, making it difficult to install in a limited space in a medical facility. . Therefore, in order to save space, a layout in which one monitoring room is provided for a plurality of radiation rooms is often employed, and in particular, a layout in which one monitoring room is provided between two radiation rooms is often employed. Has been.

  However, in a layout in which one monitoring room is provided between two radiation rooms, the radiation shielding glass plates provided on both sides of the monitoring room are opposed to each other. The subject in the other radiation chamber can be seen from the subject. In some cases, it is indispensable for patients to be unable to see each other in order to protect the privacy of subjects because treatments and examinations may be performed while subjects are undressed in a radiation room. Become.

  Therefore, it is conceivable to attach a curtain or the like to the radiation shielding glass plate. However, it is necessary to open and close the curtain each time, which complicates troublesome and complicated work. Moreover, if the radiation shielding glass plate is covered with a curtain or the like, the state between the opposing radiation chambers can be made invisible, but the state of the monitoring room can also be visually confirmed from the radiation chamber on the side where the radiation shielding glass plate is covered. It will disappear. Therefore, in this case, the original purpose of the radiation shielding glass plate for reducing the feeling of loneliness and anxiety given to the subject is impaired, so that it cannot be an effective measure.

  In view of the above circumstances, the present invention provides a technical problem that a radiation room and a monitoring space such as a monitoring room are mutually visible, and are not mutually visible between opposing radiation rooms. And

  The radiation medical equipment according to the present invention, which has been created to solve the above-mentioned problems, is disposed opposite to a monitoring space where a monitoring person exists and sandwiches the monitoring space, and radiation therapy or radiation is performed on the subject within the monitoring space. Radiation comprising a plurality of radiation chambers to be inspected, providing partition walls on both sides of the monitoring space to partition the monitoring space from each radiation chamber, and forming a part or all of the partition walls with a radiation shielding glass plate In a medical facility, a polarizing film is attached to the radiation shielding glass plate, and the polarization direction of the polarizing film attached to the radiation shielding glass plate on one side of the monitoring space is set to the radiation shielding glass plate on the other side of the monitoring space. It is characterized by being orthogonal to the polarization direction of the polarizing film to be adhered.

  According to such a configuration, since only one polarizing film is interposed between the monitoring space and each radiation chamber, light having a polarization component that matches the polarization direction of the polarizing film passes. Therefore, the subject in the radiation room can be visually recognized from the supervisor in the surveillance space, and the supervisor in the surveillance space can be visually recognized from the subject in the radiation room.

  On the other hand, since the polarizing films whose polarization directions are orthogonal to each other are interposed between the opposing radiation chambers, the light from the radiation chamber on one side of the monitoring space is blocked by the polarizing film whose polarization directions are orthogonal, There is no entry into the radiation chamber on the other side of the monitoring space. For the same reason, light from the radiation chamber on the other side of the monitoring space does not enter the radiation chamber on one side of the monitoring space. Therefore, it is possible to make the subject in the radiation chamber on the other side invisible from the subject in the radiation chamber on the one side, and the subject in the radiation chamber on the one side from the subject in the radiation chamber on the other side. Can be made invisible.

  In the above configuration, it is preferable that the monitoring space is an operation room for operating a device installed in the radiation room.

  In this way, it is possible to operate the equipment in the radiation chamber while directly monitoring each radiation chamber through the radiation shielding glass plate.

  Said structure WHEREIN: It is preferable that the lead equivalent of a radiation-shielding glass plate is 0.3 mmPb or more.

  That is, when the lead equivalent of the radiation shielding glass plate is less than 0.3 mmPb, the radiation shielding ability is lowered, and there is a possibility that the radiation in the radiation chamber passes through the radiation shielding glass and enters the monitoring space. Therefore, the lead equivalent of the radiation shielding glass plate is preferably set within the above numerical range. Here, the lead equivalent indicates the thickness of the lead plate having the same X-ray shielding ability, and the larger this value, the better the radiation shielding ability.

  In said structure, it is preferable that the thickness of a radiation shielding glass plate is 3-40 mm.

  That is, when the thickness of the radiation shielding glass plate exceeds 40 mm, the transmittance decreases, making it difficult to visually recognize the internal state between the monitoring room and the radiation room. On the other hand, when the thickness of the radiation shielding glass plate is less than 3 mm, the radiation shielding ability is lowered, and there is a possibility that the radiation in the radiation chamber passes through the radiation shielding glass plate and enters the monitoring space. In particular, when the thickness is less than 3 mm, it is difficult to produce a radiation shielding glass plate having a lead equivalent of 0.3 mmPb or more. Therefore, it is preferable to set the thickness of the radiation shielding glass plate within the above numerical range.

  Said structure WHEREIN: It is preferable that the transmittance | permeability in the visible region of the radiation shielding glass plate which stuck the polarizing film is 10% or more. The visible region refers to a wavelength of 400 to 700 nm.

  That is, when the transmittance of the radiation shielding glass plate with the polarizing film attached is less than 15%, it is difficult to visually recognize the internal state between the monitoring room and the radiation room. Therefore, it is preferable to set the transmittance of the radiation shielding glass plate with the polarizing film attached to the above numerical range.

  The radiation shielding glass plate invented in order to solve the above problems is characterized in that a polarizing film is stuck on the surface.

  According to such a configuration, the radiation shielding glass plates are arranged opposite to each other, and the polarization directions of the polarizing films attached to the respective surfaces are orthogonal to each other, so that the paragraphs [0012] to [0013] described above are described. The operational effects can be enjoyed in the same manner.

In the above configuration, in _{mass%, SiO 2 10~40%, PbO} 50~80%, B 2 O 3 0~10%, Al 2 O 3 0~10%, SrO 0~10%, BaO 0~20 %, Na ₂ O 0-10%, K ₂ O 0-10%, Sb ₂ O ₃ 0-2%, Cl ₂ 0-2%.

  If it does in this way, it will become possible to manufacture easily the radioactive shielding glass board which has the lead equivalent of 0.3 mmPb or more by the thickness of 40 mm or less.

In the above-mentioned composition, by mass%, SiO ₂ 20 to 70%, Al ₂ O ₃ 0 to 20%, MgO 0 to 20%, CaO 0 to 20%, SrO 5 to 40%, BaO 5 to 40%, Na It is preferable to have a glass composition of ₂ O 0-10%, K ₂ O 0-10%, Sb ₂ O ₃ 0-2%, Cl ₂ 0-2%.

  If it does in this way, the effect described in said paragraph [0025] can be enjoyed similarly with lead-free glass.

  As described above, according to the present invention, the polarization direction of the polarizing film attached to the radiation shielding glass plate on one side of the monitoring space and the polarizing film attached to the radiation shielding glass plate on the other side of the monitoring space. By making the polarization directions orthogonal to each other, it is possible to make the radiation chambers and the monitoring space mutually visible, but to make the different radiation chambers mutually invisible. Therefore, since the subject in the radiation room can visually recognize the state of the supervisor in the surveillance space, it is possible to effectively reduce the feeling of loneliness and anxiety given to the subject. Moreover, since it becomes impossible to visually recognize between different radiation rooms, the privacy of the subject can be appropriately ensured.

  Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

  FIG. 1 is a plan view schematically showing the entire configuration of the radiological medical facility according to the present embodiment. As shown in the figure, this radiological medical facility includes a monitoring room 1 in which a supervisor such as a doctor or a clinical laboratory technician exists, and two radiation rooms 2a and 2b facing each other across the monitoring room 1. . The monitoring room 1 also serves as an operation room for operating devices installed in the radiation rooms 2a and 2b. The radiation chambers 2a and 2b are for performing radiotherapy or radiation examination (including diagnosis) on the subject. In this embodiment, one of the two radiation chambers 2a and 2b is PET. The examination room and the other side are a PET-CT examination room.

  The monitoring room 1 and each radiation room 2a, 2b are partitioned by partition walls 3a, 3b formed of concrete or the like, and radiation is used as a monitoring window in a part of the facing partition walls 3a, 3b. The shielding glass plates 4a and 4b are respectively fitted.

  As shown in FIG. 2, polarizing films 5a and 5b are attached to the surfaces of the radiation shielding glass plates 4a and 4b. And the polarization direction of the polarizing film 5a stuck on the surface of one radiation shielding glass plate 4a is orthogonally crossed with the polarization direction of the polarizing film 5b stuck on the surface of the other radiation shielding glass plate 4b. In this embodiment, the polarizing films 5a and 5b are attached to the surfaces of the radiation shielding glass plates 4a and 4b on the monitoring room 1 side. However, the polarizing films are not limited to this embodiment. You may affix 5a, 5b on the surface at the side of the radiation chamber 2a, 2b of each radiation shielding glass 4a, 4b.

  Thereby, since only one of the polarizing films 5a and 5b is interposed between the monitoring room 1 and the radiation chambers 2a and 2b, the light of the polarization component coinciding with the polarization direction of the polarizing film 5a (5b). (Linear polarized light in which the vibration direction of the electric field matches the polarization direction of the polarizing film 5a (5b)) passes. Therefore, the person in the radiation room can visually recognize the subject in the radiation room, and the person in the radiation room can visually recognize the person in the monitoring space. Therefore, it is possible to effectively reduce the feeling of loneliness and anxiety given to the subject.

  On the other hand, since two polarizing films 5a and 5b whose polarization directions are orthogonal are interposed between the radiation chambers 2a and 2b, the light from the radiation chamber 2a on one side of the monitoring chamber 1 is the two sheets. The polarizing films 5a and 5b are not blocked and do not enter the radiation chamber 2b on the other side of the monitoring chamber 1. For the same reason, the light from the radiation chamber 2 b on the other side of the monitoring room 1 does not enter the radiation chamber 2 a on the one side of the monitoring room 1. Therefore, it is possible to make the subject in the radiation chamber 2b on the other side invisible from the subject in the radiation chamber 2a on the one side, and radiation on the one side from the subject in the radiation chamber 2b on the other side. The subject in the chamber 2a can be made invisible. Therefore, the privacy of the subject can be properly ensured.

  Moreover, since the radiation shielding glass plates 4a and 4b are required to have the ability to shield radiation such as X-rays and γ rays, it is preferable to use those having a lead equivalent of 0.3 mmPb or more. Furthermore, since the transmittance decreases as the thickness of the radiation shielding glass plates 4a and 4b increases, the thickness of the radiation shielding glass plates 4a and 4b is preferably 40 mm or less. On the other hand, if the thickness of the radiation shielding glass plates 4a and 4b is too thin, it becomes difficult to produce the radiation shielding glass plates 4a and 4b having the lead equivalent of 0.3 mmPb or more. It is preferable that it is 3 mm or more.

Specifically, radiation shielding glass plate 4a, as the 4b, in _{mass%, SiO 2 10~40%, PbO} 50~80%, B 2 O 3 0~10%, Al 2 O 3 0~10%, SrO 0~10%, BaO 0~20%, Na 2 O 0~10%, K 2 O 0~10%, Sb 2 O 3 0~2%, lead system having a glass composition of Cl ₂ 0 to 2% glass or, in terms of _{mass%, SiO 2 20~70%, Al} 2 O 3 0~20%, 0~20% MgO, CaO 0~20%, SrO 5~40%, BaO 5~40%, Na 2 O _{0~10%, K 2 O 0~10%} , Sb 2 O 3 0~2%, it is possible to use a non-lead-based glass having a glass composition of Cl ₂ 0 to 2%. With such a glass composition, it becomes possible to easily manufacture the radiation shielding glass plates 4a and 4b having a glass equivalent thickness of 40 mm or less and a lead equivalent of 0.3 mmPb or more.

  As said polarizing film 5a, 5b, it is preferable to use the thing from which the transmittance | permeability becomes 10% or more in the visible region in the state stuck on the radiation shielding glass plate 4a, 4b. This is for ensuring good visibility between the monitoring room 1 and each radiation room 2a, 2b.

  In addition, this invention is not limited to said embodiment at all, In the range which does not deviate from the summary of this invention, it can implement with a various form. For example, in the above embodiment, the case where one radiation room is arranged on each side of the monitoring room has been described, but one or more radiation rooms may be arranged on both sides of one monitoring room.

  In the above embodiment, the monitoring room closed as the monitoring space has been described as an example. However, a passage may be formed between the radiation chambers arranged to face each other, and the passage may be used as the monitoring space.

It is a top view showing typically the whole radiation medical equipment composition concerning one embodiment of the present invention. It is a longitudinal cross-sectional view which shows typically the arrangement | positioning aspect of the radiation shielding glass plate with which the polarizing film was stuck.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Monitoring room 2a, 2b Radiation room 3a, 3b Partition wall 4a, 4b Radiation shielding glass plate 5a, 5b Polarizing film

Claims (8)

A monitoring space in which a monitor exists, and a plurality of radiation chambers arranged opposite to each other across the monitoring space and performing radiation therapy or radiological examination on the subject, and partition walls are provided on both sides of the monitoring space. In the radiation medical equipment which provided and partitioned between the monitoring space and each radiation room, and formed part or all of the partition wall with a radiation shielding glass plate,
A polarizing film is attached to the radiation shielding glass plate, and the polarization direction of the polarizing film attached to the radiation shielding glass plate on one side of the monitoring space is attached to the radiation shielding glass plate on the other side of the monitoring space. Radiation medical equipment characterized by being orthogonal to the polarization direction of the polarizing film.   The radiological medical facility according to claim 1, wherein the monitoring space is an operation room for operating a device installed in the radiation room.   The radiological equipment according to claim 1 or 2, wherein the lead equivalent of the radiation shielding glass plate is 0.3 mmPb or more.   The radiation medical equipment according to any one of claims 1 to 3, wherein the radiation shielding glass plate has a thickness of 3 to 40 mm.   The radiation medical equipment according to any one of claims 1 to 4, wherein a transmittance in a visible region of the radiation shielding glass plate on which the polarizing film is adhered is 10% or more.   A radiation shielding glass plate having a polarizing film attached to a surface thereof. By _{mass%, SiO 2 10~40%, PbO} 50~80%, B 2 O 3 0~10%, Al 2 O 3 0~10%, SrO 0~10%, BaO 0~20%, Na 2 O _{0~10%, K 2 O 0~10%} , Sb 2 O 3 0~2%, the radiation shielding glass plate according to claim 6, characterized in that it comprises a glass composition of Cl ₂ 0 to 2%. By _{mass%, SiO 2 20~70%, Al} 2 O 3 0~20%, 0~20% MgO, CaO 0~20%, SrO 5~40%, BaO 5~40%, Na 2 O 0~10 _{%, K 2 O 0~10%,} Sb 2 O 3 0~2%, the radiation shielding glass plate according to claim 6, characterized in that it comprises a glass composition of Cl ₂ 0 to 2%.

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