JP6188347B2 - X線ct装置 - Google Patents
X線ct装置 Download PDFInfo
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- JP6188347B2 JP6188347B2 JP2013028922A JP2013028922A JP6188347B2 JP 6188347 B2 JP6188347 B2 JP 6188347B2 JP 2013028922 A JP2013028922 A JP 2013028922A JP 2013028922 A JP2013028922 A JP 2013028922A JP 6188347 B2 JP6188347 B2 JP 6188347B2
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- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
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- E—FIXED CONSTRUCTIONS
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- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
- E04B1/84—Sound-absorbing elements
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F13/00—Coverings or linings, e.g. for walls or ceilings
- E04F13/07—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor
- E04F13/072—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of specially adapted, structured or shaped covering or lining elements
- E04F13/075—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of specially adapted, structured or shaped covering or lining elements for insulation or surface protection, e.g. against noise or impact
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F13/00—Coverings or linings, e.g. for walls or ceilings
- E04F13/07—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor
- E04F13/072—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of specially adapted, structured or shaped covering or lining elements
- E04F13/077—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of specially adapted, structured or shaped covering or lining elements composed of several layers, e.g. sandwich panels
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F13/00—Coverings or linings, e.g. for walls or ceilings
- E04F13/07—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor
- E04F13/08—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements
- E04F13/0866—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements composed of several layers, e.g. sandwich panels or layered panels
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05G—X-RAY TECHNIQUE
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- A61B6/02—Arrangements for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
- A61B6/03—Computed tomography [CT]
- A61B6/032—Transmission computed tomography [CT]
- A61B6/035—Mechanical aspects of CT
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- A61B6/08—Auxiliary means for directing the radiation beam to a particular spot, e.g. using light beams
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
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- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
- E04B1/8209—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only sound absorbing devices
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- E—FIXED CONSTRUCTIONS
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- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
- E04B1/84—Sound-absorbing elements
- E04B1/8409—Sound-absorbing elements sheet-shaped
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
- E04B1/84—Sound-absorbing elements
- E04B2001/8457—Solid slabs or blocks
- E04B2001/8476—Solid slabs or blocks with acoustical cavities, with or without acoustical filling
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F2290/00—Specially adapted covering, lining or flooring elements not otherwise provided for
- E04F2290/04—Specially adapted covering, lining or flooring elements not otherwise provided for for insulation or surface protection, e.g. against noise, impact or fire
- E04F2290/041—Specially adapted covering, lining or flooring elements not otherwise provided for for insulation or surface protection, e.g. against noise, impact or fire against noise
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- Life Sciences & Earth Sciences (AREA)
- Architecture (AREA)
- Medical Informatics (AREA)
- Acoustics & Sound (AREA)
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Description
以上に、X線CT装置の基本的な構成について説明した。
次に、カバー16の詳細について図2及び図3を参照して説明する。図2はX線CT装置の正面図、図3はX線CT装置を斜め後方から見たときの斜視図である。
冷却手段40はファン41を有している。ファン41は、放熱器26の近傍に配置され、放熱器26からの熱をダクト50に送り出すものである。ダクト50は、架台11とカバー16との間に配置され、ファン41からの排気を受けて排気口163bに導くものである。カバー内部からの騒音としては、ファン41が回転しているときの風切り音及びそれを駆動するモータの音が含まれる。
次に、カバー16内部からの騒音を低減するための防音構造について説明する。
先ず、比較例に係る防音構造について図4を参照して説明する。図4は、一つの防音部材により構成された防音構造の断面図である。図4では、開口部15を体軸方向(Z軸方向)に沿って切断したときの断面図を示している。
ここで、防音部材61の厚さと音響透過損失値との関係について図5を参照して説明する。図5は防音部材の厚さと音響透過損失値との関係を示す図である。ここで、音響透過損失値とは、音響透過率の逆数の対数を10倍した量をいい、デシベル[dB]で表される。また、音響透過率とは、入射音の強さに対する透過音の強さの比をいう。
次に、この実施形態に係る防音構造について図6及び図7を参照して説明する。図6は防音層を設けた防音構造の断面図である。図6では開口部15を体軸方向(Z軸方向)に沿って切断したときの断面図を示している。
防音部材61は、音響透過損失の大きな材料であって、X線及びマーキングのためのレーザに対し透過率の良い薄いフィルム状の材料により構成されている。それにより、X線撮影により取得される画像の画質の低下を抑えることが可能となる。
前述したように、防音層62としての空気層は二つの防音部材61により挟まれている。空気層は、0.5[mm]〜1.0[mm]の厚さを有する両面テープ63により二つの防音部材61を貼り合わせることにより形成されるようにしてもよい。
D≧2T+t (2)
W0≧W>W1 (3)
次に、弾性部材65について図1、図3及び図8を参照して説明する。図8は、床面とカバー16との間の間隙S2を塞ぐように配置された弾性部材の断面図である。
S1 X線透過口
S2 間隙
10 X線CT装置
11 架台
111 ファン設置部
112 連通口
12 環状回転体
121 体軸
122 通気口
13 フレーム
14 回転機構
15 開口部
16 カバー
161 底カバー
162 前カバー
162a 筒口前部
163 後カバー
163a 筒口後部
163b 排気口
164 天井カバー
164a 接点
165 側面カバー
166 段部
17 X線管球
18 X線検出器
19 データ収集部(DAS)
20 データ伝送部
21 コンソール
22 スリップリング
23 固定部
24 X線制御部
25 架台制御部
26 放熱器
31 前処理部
32 バスライン
33 システム制御部
34 入力部
35 データ記憶部
36 再構成処理部
37 データ処理部
38 表示部
39 高電圧発生部
40 冷却手段
41 ファン
50 ダクト
61 防音部材
62 防音層
63 両面テープ
65 弾性部材
70 寝台
71 天板
Claims (12)
- 内部にX線管球が収納された回転体を覆い、前記X線管球からのX線を透過するX線透過口が形成されたカバーと、
前記X線透過口を塞ぐように配置され、防音層を挟むように設けられたシート状の二つの防音部材と、
薄膜状の基材の両面に接着剤が塗られ、前記二つの防音部材を貼り合わせる両面テープと、
を有する
ことを特徴とするX線CT装置。 - 内部にX線管球が収納された回転体を覆い、前記X線管球からのX線を透過するX線透過口が形成されたカバーと、
前記X線透過口を塞ぐように配置され、吸音シートにより形成される防音層を挟むように設けられたシート状の二つの防音部材と、
を有することを特徴とするX線CT装置。 - 内部にX線管球が収納された回転体を覆い、前記X線管球からのX線を透過するX線透過口が形成されたカバーと、
前記X線透過口を塞ぐように配置され、音響反射材により形成される防音層を挟むように設けられたシート状の二つの防音部材と、
を有することを特徴とするX線CT装置。 - 前記防音部材の厚さは、0.5[mm]から1.0[mm]であることを特徴とする請求項1から請求項3のいずれか一項に記載のX線CT装置。
- 検査対象となる被検者の体表にレーザ光を照射することにより、前記体表に目印を付けるように構成され、
前記防音部材は、有色の前記レーザ光を透過する有色フィルムにより構成されることを特徴とする請求項4に記載のX線CT装置。 - 前記防音部材は、前記有色フィルムと無色透明フィルムとを重ね合わせることにより構成されることを特徴とする請求項5に記載のX線CT装置。
- 前記有色フィルムは、無色透明の基材に、前記有色のレーザ光を透過する着色剤を練り込むことにより形成されることを特徴とする請求項5に記載のX線CT装置。
- 前記防音部材は、ポリエチレンテレフタレートにより形成されていることを特徴とする請求項1から請求項3のいずれか一項に記載のX線CT装置。
- 前記両面テープの厚さは、0.5[mm]から1.0[mm]であることを特徴とする請求項1に記載のX線CT装置。
- 前記防音層は、空気層であることを特徴とする請求項1に記載のX線CT装置。
- 前記吸音シートは、グラスウールを含む多孔質材料であることを特徴とする請求項2に記載のX線CT装置。
- 前記回転体は、中央に開口部を有する環状回転体であり、
前記カバーは、筒状に形成され、前記開口部に嵌め込まれることにより、前記開口部の中心側から前記環状回転体を覆う筒側部を有し、前記筒側部に前記X線透過口が形成されたカバーであることを特徴とする請求項1から請求項3のいずれか一項に記載のX線CT装置。
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Application Number | Priority Date | Filing Date | Title |
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JP2013028922A JP6188347B2 (ja) | 2012-02-22 | 2013-02-18 | X線ct装置 |
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JP2012036172 | 2012-02-22 | ||
JP2012036172 | 2012-02-22 | ||
JP2013028922A JP6188347B2 (ja) | 2012-02-22 | 2013-02-18 | X線ct装置 |
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Publication Number | Publication Date |
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JP2013198731A JP2013198731A (ja) | 2013-10-03 |
JP2013198731A5 JP2013198731A5 (ja) | 2016-02-25 |
JP6188347B2 true JP6188347B2 (ja) | 2017-08-30 |
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JP2013028922A Active JP6188347B2 (ja) | 2012-02-22 | 2013-02-18 | X線ct装置 |
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US (1) | US9414793B2 (ja) |
JP (1) | JP6188347B2 (ja) |
CN (1) | CN103796591B (ja) |
WO (1) | WO2013125602A1 (ja) |
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US10791999B2 (en) * | 2014-02-04 | 2020-10-06 | General Electric Company | Interface for gantry and component |
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