JPH01305937A - Magnetic resonance diagnosis device - Google Patents
Magnetic resonance diagnosis deviceInfo
- Publication number
- JPH01305937A JPH01305937A JP63136351A JP13635188A JPH01305937A JP H01305937 A JPH01305937 A JP H01305937A JP 63136351 A JP63136351 A JP 63136351A JP 13635188 A JP13635188 A JP 13635188A JP H01305937 A JPH01305937 A JP H01305937A
- Authority
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- Japan
- Prior art keywords
- magnetic field
- coil
- bed
- magnetic resonance
- subject
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000003745 diagnosis Methods 0.000 title abstract description 18
- 230000003068 static effect Effects 0.000 claims abstract description 38
- 230000005284 excitation Effects 0.000 claims abstract description 6
- 230000000877 morphologic effect Effects 0.000 claims description 4
- 238000003384 imaging method Methods 0.000 claims description 2
- 238000009434 installation Methods 0.000 abstract description 14
- 230000005540 biological transmission Effects 0.000 abstract 3
- 238000000034 method Methods 0.000 description 18
- 238000010586 diagram Methods 0.000 description 6
- 239000004020 conductor Substances 0.000 description 3
- 230000003028 elevating effect Effects 0.000 description 2
- 238000001208 nuclear magnetic resonance pulse sequence Methods 0.000 description 2
- 206010009244 Claustrophobia Diseases 0.000 description 1
- 206010019909 Hernia Diseases 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 208000019899 phobic disease Diseases 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000004611 spectroscopical analysis Methods 0.000 description 1
- 210000000278 spinal cord Anatomy 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Magnetic Resonance Imaging Apparatus (AREA)
Abstract
Description
【発明の詳細な説明】
［発明の目的］
（産業上の利用分野）
本発明は、磁気共鳴（Ｍ Ｒ： ａ＋ａｇｎｅｔｉｅｒ
ｅｓｏｎａｎｃｅ ）現象を利用して被検者（生体）の
スライス画像等の形態情報やスペクトロスコピー等の機
能情報を得る磁気共鳴診断装置に関し、特に、横臥位状
態のみならず多様な体位での診断を可能とした磁気共鳴
診断装置に関する。[Detailed description of the invention] [Object of the invention] (Industrial application field) The present invention is directed to magnetic resonance (MR: a+agnetier
Regarding magnetic resonance diagnostic equipment that uses the phenomenon of morphological information such as slice images of a subject (living body) and functional information such as spectroscopy, it is particularly useful for diagnosis not only in the recumbent position but also in various body positions. The present invention relates to a magnetic resonance diagnostic device that enables this.
（従来の技術）
磁気共鳴現象は、静磁場中に置かれた零でないスピン及
び磁気モーメントを持つ原子核が特定の周波数の電磁波
のみを共鳴的に吸収・放出する現象であり、この原子核
は下記式に示す角周波数ω０ （ωｏ−２πし０．ν０
；ラーモア周波数）で共鳴する。(Prior art) Magnetic resonance is a phenomenon in which an atomic nucleus with non-zero spin and magnetic moment placed in a static magnetic field resonantly absorbs and emits only electromagnetic waves of a specific frequency. The angular frequency ω0 (ωo−2π and 0.ν0
; Larmor frequency).
ω０１γＢＯ
ここで、γは原子核の種類に固有の磁気回転比であり、
また、Ｂｏは静磁場強度である。ω01γBO Here, γ is the gyromagnetic ratio specific to the type of atomic nucleus,
Moreover, Bo is the static magnetic field strength.
以上の原理を利用して生体診断を行う装置は、上述の共
鳴吸収の後に誘起される上記と同じ周波数の電磁波を信
号処理して、原子核密度、縦緩和時間Ｔｌ、横緩和時間
Ｔ２．流れ、化学シフト等の情報が反映された診断情報
例えば被検者のスライス像等を無侵襲で得るようにして
いる。An apparatus that performs biological diagnosis using the above-mentioned principle processes electromagnetic waves of the same frequency as above, which are induced after the above-mentioned resonance absorption, to determine nuclear density, longitudinal relaxation time Tl, transverse relaxation time T2, and so on. Diagnostic information that reflects information such as flow and chemical shift, such as slice images of a subject, is obtained non-invasively.
そして、磁気共鳴による診断情報の収集は、静磁場中に
配置した被検者の全部位を励起し且つ信号収集すること
ができるものであるが、装置構成上の制約やイメージン
グ像の臨床上の要請から、実際の装置としては特定の部
位に対する励起とその信号収集とを行うようにしている
。Collecting diagnostic information using magnetic resonance can excite all parts of a subject placed in a static magnetic field and collect signals, but there are limitations in the equipment configuration and clinical aspects of imaging images. Due to this request, the actual device is designed to excite a specific region and collect its signals.
この場合、イメージング対象とする特定部位は、一般に
ある厚さを持ったスライス部位であるのが通例であり、
このスライス部位からのエコー信号やＦＩＤ信号の磁気
共鳴信号（ＭＲ倍信号を多数回のデータエンコード過程
を実行することにより収集し、これらデータ群を、例え
ば２次元フーリエ変換法により画像再構成処理すること
により前記特定スライス部位の画像を生成するようにし
ている。In this case, the specific region to be imaged is generally a sliced region with a certain thickness;
Magnetic resonance signals (MR multiplied signals) of echo signals and FID signals from this slice site are collected by performing a data encoding process many times, and these data groups are subjected to image reconstruction processing using, for example, a two-dimensional Fourier transform method. By doing so, an image of the specific slice region is generated.
例えば、第４図は静磁場Ｂｏの磁場方向を水平方向とし
た静磁場発生磁石１を用いる方式（横磁場方式）の装置
の構成を示すものであり、第５図は静磁場Ｂｏの磁場方
向を垂直方向（縦磁場方式）とした静磁場発生磁石２を
用いる方式の装置の構成を示すものであり、それぞれ電
磁石や永久磁石で構成されている。For example, Fig. 4 shows the configuration of an apparatus using a static magnetic field generating magnet 1 with the magnetic field direction of the static magnetic field Bo in the horizontal direction (transverse magnetic field method), and Fig. 5 shows the configuration of an apparatus using the static magnetic field generation magnet 1 with the magnetic field direction of the static magnetic field Bo in the horizontal direction. This figure shows the configuration of a device using a static magnetic field generating magnet 2 in a vertical direction (vertical magnetic field type), each of which is composed of an electromagnet or a permanent magnet.
一般に、第４図の磁石１は、水平方向の両端部に開口部
を有する円筒内に超電導コイルや常電導コイルを配置し
、前記開口部に連なる内筒空間を被検者導入空間として
いる。また、第５図の磁石２は、垂直方向に距離を存し
て単位コイル又は永久磁石の磁極を対向配置し、この対
向空間を被検者導入空間としているものである。Generally, in the magnet 1 shown in FIG. 4, a superconducting coil or a normal conducting coil is arranged in a cylinder having openings at both ends in the horizontal direction, and an inner cylindrical space connected to the openings is used as an examination subject introduction space. Further, the magnet 2 shown in FIG. 5 has magnetic poles of unit coils or permanent magnets facing each other at a distance in the vertical direction, and this facing space is used as the subject introduction space.
そして、いずれの方式も磁石１２に近接してスライド天
板を何する寝台３が設置されており、この寝台３のスラ
イド天板上に載置された被検者Ｐを水平方向に形成され
ている被検者導入空間に挿入するようになっている。よ
って、第４図の方式のものでは、被検者Ｐの体軸方向と
磁場方向とが略同−となり、第５図の方式のものでは、
被検者Ｐの体軸方向と磁場方向とが略直角となる。In both methods, a bed 3 with a slide top plate is installed close to the magnet 12, and the subject P placed on the slide top plate of this bed 3 is placed in a horizontal direction. It is designed to be inserted into the test subject introduction space. Therefore, in the method shown in FIG. 4, the direction of the body axis of the subject P and the direction of the magnetic field are approximately the same, and in the method shown in FIG.
The body axis direction of the subject P and the magnetic field direction are approximately perpendicular to each other.
・ また、磁気共鳴の原理により静磁場Ｂ、と励起用高
周波磁場Ｂ１とは直交することが条件であるので、一般
に多用されている送受信コイルとして第６図（ａ）に示
す鞍型コイル４、第６図（ｂ）に示す表面コイル５、第
６図（Ｃ）に示すソレノイドコイル６は、その適用が制
限されている。すなわち、第４図に示す水平磁場方式で
は、第６図（ａ）に示す鞍型コイル４と第６図（ｂ）に
示す表面コイル５とを用いることができるが、高感度特
性を期待できる第６図（ｃ）に示すソレノイドコイル６
は用いることができない。- Also, according to the principle of magnetic resonance, it is a condition that the static magnetic field B and the excitation high-frequency magnetic field B1 are perpendicular to each other, so the saddle-shaped coil 4 shown in FIG. 6(a) is used as a commonly used transmitting and receiving coil. The surface coil 5 shown in FIG. 6(b) and the solenoid coil 6 shown in FIG. 6(C) have limited applications. That is, in the horizontal magnetic field method shown in FIG. 4, the saddle-shaped coil 4 shown in FIG. 6(a) and the surface coil 5 shown in FIG. 6(b) can be used, and high sensitivity characteristics can be expected. Solenoid coil 6 shown in FIG. 6(c)
cannot be used.
また、第５図に示す縦磁場方式では、第６図（Ｃ）に示
すソレノイドコイル６を用いることができるが、診断部
位に対する汎用性が高い第６図（ａ）に示す鞍型コイル
４と局所部位の診断に好適な第６図（ｂ）に示す表面コ
イル５を用いることができない。In the vertical magnetic field method shown in FIG. 5, the solenoid coil 6 shown in FIG. 6(C) can be used, but the saddle-shaped coil 4 shown in FIG. The surface coil 5 shown in FIG. 6(b), which is suitable for diagnosis of localized areas, cannot be used.
さらに、装置の所要設置空間について考察すると、いず
れの方式にあっても磁石１．２と寝台３とを並列に設置
するものであるため、装置の水平方向は５メートル前後
となり、この種の装置の持つ高重量化とあいまって設置
条件を厳しくしている。Furthermore, when considering the required installation space for the device, since the magnet 1.2 and the bed 3 are installed in parallel in either method, the horizontal direction of the device is approximately 5 meters, and this type of device This, combined with the increased weight of the device, has made the installation conditions stricter.
また、上記の両方式共に被検者Ｐは磁石１，２の被検者
導入空洞内で横臥位状態であり、このため横臥位の体位
でのみの診断となってしまうので、診断内容によっては
問題なことがある。例えば、を髄やを椎は通常の生活状
態つまり立位状態で過大なストレスが作用している。従
って、このストレスを要因としているを椎ヘルニアの患
者（被検者Ｐ）にあっては、このストレス状態での画像
診断が本来必要とされるものである。しかし乍、上記の
両方式共に被検者Ｐの横臥位のみの画像診断であるため
、上述したストレス状態での画像診断を行うことはでき
なかった。In addition, in both of the above methods, the subject P is in a lying position within the subject introduction cavity of magnets 1 and 2, and therefore the diagnosis can only be made in the lying position, so depending on the diagnosis content. There may be a problem. For example, the spinal cord and vertebrae are subject to excessive stress during normal life, that is, in a standing position. Therefore, for patients with vertebral hernia (subject P) for whom this stress is a factor, image diagnosis under this stress state is essentially required. However, since both of the above methods perform image diagnosis only when the subject P is in the lateral recumbent position, it is not possible to perform image diagnosis in the stress state described above.
（発明が解決しようとする課題）
このように従来の技術による横磁場方式や縦磁場方式の
装置では、各種の送受信コイルを所望にて使うことがで
きず、また、設置条件が厳しいものであり、さらに、多
様な体位での診断を行うことができない等の不具合があ
った。(Problems to be Solved by the Invention) As described above, in the conventional transverse magnetic field type or vertical magnetic field type devices, various transmitting and receiving coils cannot be used as desired, and the installation conditions are strict. Furthermore, there were other problems such as the inability to perform diagnosis in various body positions.
そこで本発明の目的は、各種の送受信コイルを所望にて
使うことができ且つ設置条件を緩和し且つ多様な体位で
の診断を行うことを可能とした磁気共鳴診断装置を提供
することにある。SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a magnetic resonance diagnostic apparatus that can use various types of transmitting and receiving coils as desired, eases installation conditions, and allows diagnosis in various body positions.
［発明の構成］
（課題を解決するための手段）
本発明は上記課題を解決し且つ目的を達成するために次
のような手段を講じた構成としている。[Structure of the Invention] (Means for Solving the Problems) The present invention has a structure in which the following means are taken to solve the above problems and achieve the objects.
すなわち、本発明は、水平方向に対向した磁極を有する
静磁場磁石と、前記対向空間に配置される傾斜磁場コイ
ル、送受信コイル及び起倒寝台とを備え、前記静磁場コ
イルによって発生した前記対向空間内の静磁場中に前記
起倒寝台により被検者を配置し、該被検者に対して前記
傾斜磁場コイルにより傾斜磁場を印加すると共に前記送
受信コイルにより励起用高周波磁場を印加して前記被検
者の特定部位に磁気共鳴現象を生じせしめ、この現象に
より誘起した磁気共鳴信号を前記送受信コイルにより膠
果して信号処理を施すことにより前記特定部位の形態情
報及び機能情報のうち少なくとも一方を画像化するよう
に構成したことを特徴としている。That is, the present invention includes a static magnetic field magnet having horizontally opposed magnetic poles, a gradient magnetic field coil, a transmitting/receiving coil, and an upright bed arranged in the opposing space, and the opposing space generated by the static magnetic field coil. A subject is placed in a static magnetic field using the tilting bed, and a gradient magnetic field is applied to the subject by the gradient magnetic field coil, and a high-frequency magnetic field for excitation is applied by the transmitting/receiving coil. A magnetic resonance phenomenon is caused in a specific part of the examiner, and the magnetic resonance signals induced by this phenomenon are processed by the transmitter/receiver coil and subjected to signal processing, thereby creating an image of at least one of morphological information and functional information of the specific part. It is characterized by being configured to do so.
（作用）
このような構成によれば、静磁場磁石の対向空間には静
磁場が生成され、且つ該対向空間には起倒寝台により被
検者を多様な体位で置いて診断を行うことができる。こ
の場合、前記対向空間に起倒寝台を設置することができ
るので、所要設置空間は横磁場方式や縦磁場方式の場合
に比べて小さくて済み、設置条件は緩和される。また、
被検者の体軸に対して直角に静磁場の方向が向くので、
鞍型コイル、表面コイル、ソレノイドコイル等の各種の
送受信コイルを所望にて使うことができる。(Function) According to such a configuration, a static magnetic field is generated in the space facing the static magnetic field magnet, and in the facing space, a patient can be placed in various body positions on a reclining bed for diagnosis. can. In this case, since the raising/lowering bed can be installed in the opposing space, the required installation space is smaller than in the case of the horizontal magnetic field method or the vertical magnetic field method, and the installation conditions are relaxed. Also,
Since the direction of the static magnetic field is perpendicular to the subject's body axis,
Various transmitting and receiving coils such as saddle coils, surface coils, solenoid coils, etc. can be used as desired.
（実施例）
以下本発明にかかる磁気共鳴診断装置の一実施例を第１
図を参照して説明する。(Example) Hereinafter, an example of the magnetic resonance diagnostic apparatus according to the present invention will be described as a first example.
This will be explained with reference to the figures.
第１図に示すように、静磁場磁石１１は、法例にヨーク
部１１ａが置かれ且つ該要ヨーク部１１ａの両端から上
方に脚部１１ｂｌ、１１ｂ２が伸長している。そして、
この脚部１１ｂｌ。As shown in FIG. 1, the static magnetic field magnet 11 has a yoke portion 11a placed on its base, and leg portions 11bl and 11b2 extending upward from both ends of the main yoke portion 11a. and,
This leg 11bl.
１１ｂ２の端部には水平方向に対向して磁極１１ｃｌ、
１１ｃ２を有する構成となっている。At the end of 11b2, horizontally opposing magnetic poles 11cl,
11c2.
この構成により、磁極１１ｃ１．１１ｃ２の間には磁気
共鳴を生じさせるための静磁場Ｂ。が、磁場方向を水平
にして生成されるようになる。この場合、図示しないシ
ムコイルが設けられ、静磁場の均一性を補正できるよう
にしてあってもよい。With this configuration, a static magnetic field B is generated between the magnetic poles 11c1 and 11c2 to generate magnetic resonance. is generated with the magnetic field direction horizontal. In this case, a shim coil (not shown) may be provided to correct the uniformity of the static magnetic field.
また、磁極１１ｃｌ、１１ｃ２の表面には傾斜磁場コイ
ル１２がそれぞれ設けられている。さらに、磁極１１ｃ
ｌ、１１ｃ２の対向空間内には鞍型コイル、表面コイル
、ソレノイドコイル等の各種の送受信コイルが設けられ
ている（図示せず。）。Further, gradient magnetic field coils 12 are provided on the surfaces of the magnetic poles 11cl and 11c2, respectively. Furthermore, the magnetic pole 11c
Various types of transmitting/receiving coils such as saddle-shaped coils, surface coils, and solenoid coils are provided in the space facing the coils 1 and 11c2 (not shown).
一方、静磁場゛磁石１１のヨーク部１１ａには起倒寝台
１３が設置され、この起倒寝台１３の天板１３ ａ ｌ
に図示しない被検者を載置することができるようになっ
ている。この天板１３ａは、フットレスト１３ａ１とボ
デーレスト１３ａ２とからなりでいる。これにより、静
磁場の磁場方向と被検者の体軸方向とが直交するように
なる。On the other hand, an elevating bed 13 is installed on the yoke portion 11a of the static magnetic field magnet 11, and a top plate 13 a l of this elevating bed 13 is installed.
A subject (not shown) can be placed thereon. This top plate 13a consists of a footrest 13a1 and a body rest 13a2. Thereby, the magnetic field direction of the static magnetic field and the subject's body axis direction become perpendicular.
以上の本体構成に加えて、傾斜磁場コイル１２を駆動す
る傾斜磁場電源１４が設けられ、送受信コイルを駆動す
る送受信器１５が設けられている。In addition to the above main body configuration, a gradient magnetic field power supply 14 that drives the gradient magnetic field coil 12 is provided, and a transmitter/receiver 15 that drives the transmitter/receiver coil is provided.
この傾斜磁場電源１４及び送受信器１５はシーケンサ１
６により制御され、このシーケンサ１６は再構成処理系
を含むコンピュータシステム１７の制御を受けるように
なっている。The gradient magnetic field power supply 14 and the transmitter/receiver 15 are connected to the sequencer 1
6, and this sequencer 16 is controlled by a computer system 17 including a reconfiguration processing system.
また、このコンピュータシステム１７により生成された
画像はモニタ１８にて表示され、コンピュータシステム
１７は寝台制御部１９の制御を行ない、この寝台制御部
１９は起倒寝台１３の起倒制御等を行うようになってい
る。The image generated by this computer system 17 is displayed on a monitor 18, and the computer system 17 controls a bed control section 19, which controls the raising and lowering of the bed 13. It has become.
次に上記の如く構成された本実施例の作用を、第１図及
び起倒寝台１３の動作を示す第２図を参照して説明する
。先ず、コンピュタ−システム１７及び寝台制御部１９
により、第２図（ａ）に示すように起倒寝台１３の天板
１３ａを立位とし、この立位状態で図示しない被検者は
、フットレスト１３ａ１に足を置き、胴体をボデーレス
ト１３ａ２に寄せ掛けて、自然な状態で立つ。次に、被
検者の所望部位を最適磁場空間に設定すべく又は所望の
体位となるように、天板１３ａを傾動させて傾斜状態で
ある第２図（ｂ）又は水平状態である第２図（ｃ）のよ
うに設定する。Next, the operation of the present embodiment configured as described above will be explained with reference to FIG. 1 and FIG. 2 showing the operation of the upright bed 13. First, the computer system 17 and bed control section 19
Accordingly, as shown in FIG. 2(a), the top plate 13a of the reclining bed 13 is placed in a standing position, and in this standing position, the subject (not shown) places his feet on the footrest 13a1 and brings his torso to the body rest 13a2. Hang it up and stand in a natural position. Next, in order to set the desired part of the subject in the optimum magnetic field space or to obtain the desired body position, the top plate 13a is tilted to be in the tilted state (FIG. 2(b)) or in the horizontal state (FIG. 2(b)). Set as shown in figure (c).
ここで、送受信コイルとして例えば図示しない表面コイ
ルを被検者の所望部位に置き、適宜のパルスシーケンス
を実行するための指令をコンピュタ−システム１７から
シーケンサ１６に与え、シーケンサ１６は傾斜磁場電源
１４及び送受信器１５に制御信号を与え、前記パルスシ
ーケンスにかかわるパルス電力により傾斜磁場コイル１
２及び送受信コイルを駆動する。Here, for example, a surface coil (not shown) is placed as a transmitting/receiving coil at a desired part of the subject, and a command for executing an appropriate pulse sequence is given to the sequencer 16 from the computer system 17. A control signal is given to the transceiver 15, and the gradient magnetic field coil 1 is controlled by the pulse power related to the pulse sequence.
2 and drive the transmitting and receiving coils.
以上により被検者の特定部位は磁気共鳴による励起が生
じ、その後に誘起する磁気共鳴信号を送受信コイルによ
り収集して送受信器１５を介してコンピュータシステム
１７に取込んで再構成処理により例えばスライス像等を
生成し、モニタ１８に表示する。As a result, a specific region of the subject is excited by magnetic resonance, and the induced magnetic resonance signals are then collected by the transmitter/receiver coil and taken into the computer system 17 via the transmitter/receiver 15, and reconstructed into, for example, a slice image. etc. are generated and displayed on the monitor 18.
以上のように本実施例によれば、静磁場磁石１１の対向
空間には静磁場が生成され、且つ該対向空間には起倒寝
台１３により被検者を多様な体位で置いて診断を行うこ
とができる。よって、被検者の横臥位のみならず立位等
でのストレス状態での画像診断を行うことができる。As described above, according to the present embodiment, a static magnetic field is generated in the space facing the static magnetic field magnet 11, and the patient is placed in various positions in the facing space using the upright bed 13 for diagnosis. be able to. Therefore, image diagnosis can be performed not only when the subject is in a lying position but also in a stressed state, such as in a standing position.
また、起倒寝台１３を前記対向空間に設置しているので
、所要設置空間は横磁場方式や縦磁場方式の場合に比べ
て小さくて済み、設置条件は緩和される。Furthermore, since the raising/lowering bed 13 is installed in the opposing space, the required installation space is smaller than in the case of the horizontal magnetic field method or the vertical magnetic field method, and the installation conditions are relaxed.
さらに、被検者の体軸に対して直角に静磁場の方向が向
くので、鞍型コイル、表面コイル、ソレノイドコイル等
の各種の送受信コイルを所望にて使うことができる。Furthermore, since the direction of the static magnetic field is perpendicular to the subject's body axis, various types of transmitting/receiving coils such as saddle-shaped coils, surface coils, solenoid coils, etc. can be used as desired.
また、第４図及び第５図に示す構成のものでは、被検者
は磁石１，２内の狭い空間に閉じこめられた感覚を知覚
するものであるが、本実施例では静磁場磁石１１の上方
つまり磁極１１ｃｌ。In addition, in the configurations shown in FIGS. 4 and 5, the subject perceives a feeling of being confined in a narrow space within the magnets 1 and 2, but in this embodiment, the subject feels trapped in a narrow space within the magnets 1 and 2. Upper or magnetic pole 11cl.
１１Ｃ２の対向空間の上方は開放されているので、起倒
寝台１３上にある被検者は開放感を知覚し、精神的に好
ましい状況になる。特に、閉所恐怖症の傾向のある被検
者には好適である。Since the upper part of the space facing 11C2 is open, the subject on the upright bed 13 perceives a sense of openness and is in a mentally favorable situation. It is particularly suitable for subjects who tend to have claustrophobia.
本発明は上記実施例に限定されるものではない。The present invention is not limited to the above embodiments.
例えば、起倒寝台１３はせり上がり機構を備えたものと
すれば、起倒寝台１３の所要可動範囲は小さくすること
ができ、設置条件に関して一層好適となる。また、静磁
場磁石に関しては第３図に示すようにＵ字形状の鉄心２
０の磁気ヨーク２０ａの両端から上方に伸長した磁極部
２０ｂｌ 。For example, if the raising/lowering bed 13 is provided with a lifting mechanism, the required movable range of the raising/lowering bed 13 can be reduced, making the installation conditions more suitable. Regarding static magnetic field magnets, as shown in Figure 3, a U-shaped iron core 2
Magnetic pole portions 20bl extend upward from both ends of the magnetic yoke 20a.
２０ｂ２に導体２１を巻装し、電磁石型静磁場磁石を構
成するようにしてもよい。The conductor 21 may be wound around the conductor 20b2 to constitute an electromagnetic static field magnet.
上記の場合、導体２１としては常電導線又は超［４線の
いずれかを採用することができる。さらに、起倒寝台１
３の天板１３に送受信コイルを固定する機構を付設する
ようにしてもよい。この池水発明の要旨を逸脱しない範
囲で種々変形して実施できるものである。In the above case, the conductor 21 can be either a normal conducting wire or a super conductive wire. In addition, the stand-up bed 1
A mechanism for fixing the transmitting/receiving coil may be attached to the top plate 13 of No. 3. The invention can be modified in various ways without departing from the gist of the invention.
［発明の効果］
以上のように本発明では、水平方向に対向した磁極を有
する静磁場磁石と、前記対向空間に配置される傾斜磁場
コイル、送受信コイル及び起倒寝台とを備え、前記静磁
場コイルによって発生した前記対向空間内の静磁場中に
前記起倒寝台により被検者を配置し、該被検者に対して
前記傾斜磁場コイルにより傾斜磁場を印加すると共に前
記送受信コイルにより励起用高周波磁場を印加して前記
被検者の特定部位に磁気共鳴現象を生じせしめ、この現
象により誘起した磁気共鳴信号を前記送受信コイルに−
より収集して信号処理を施すことにより前記特定部位の
形態情報及び機能情報のうち少なくとも一方を画像化す
るように構成したことにより、起倒寝台が配置される静
磁場磁石の対向空間には静磁場が生成されるので、起倒
寝台により被検者を多様な体位で置いて診断を行うこと
ができ、前記対向空間に起倒寝台を設置することができ
るので、所要設置空間は横磁場方式や縦磁場方式の場合
に比べて小さくて済み、設置条件は緩和され、被検者の
体軸に対して直角に静磁場の方向が向くので、鞍型コイ
ル、表面コイル、ソレノイドコイル等の各種の送受信コ
イルを所望にて使うことができる。[Effects of the Invention] As described above, the present invention includes a static magnetic field magnet having horizontally opposed magnetic poles, a gradient magnetic field coil, a transmitting/receiving coil, and an upright bed disposed in the opposing space, and the static magnetic field A subject is placed on the upright bed in a static magnetic field in the facing space generated by the coil, and a gradient magnetic field is applied to the subject by the gradient magnetic field coil, and a high frequency wave for excitation is applied to the subject by the transmitting/receiving coil. A magnetic field is applied to cause a magnetic resonance phenomenon in a specific region of the subject, and a magnetic resonance signal induced by this phenomenon is sent to the transmitter/receiver coil.
The configuration is configured to image at least one of the morphological information and functional information of the specific region by collecting the information from the user and performing signal processing, so that there is no static in the space facing the static magnetic field magnet in which the upright bed is placed. Since a magnetic field is generated, the patient can be placed in a variety of positions for diagnosis using the tilting bed, and since the tilting bed can be installed in the opposing space, the required installation space is reduced to the horizontal magnetic field method. It is smaller than the vertical magnetic field method, the installation conditions are relaxed, and the direction of the static magnetic field is perpendicular to the subject's body axis, so it can be used with various types of coils such as saddle-shaped coils, surface coils, solenoid coils, etc. Transmitting/receiving coils can be used as desired.
よって本発明によれば、各種の送受信コイルを所望にて
使うことができ、且つ設置条件を緩和し且つ多様な体位
での診断を行うことを可能とした磁気共鳴診断装置を提
供できる。Therefore, according to the present invention, it is possible to provide a magnetic resonance diagnostic apparatus that can use various types of transmitting and receiving coils as desired, eases installation conditions, and allows diagnosis in various body positions.
第１図は本発明にかかる磁気共鳴診断装置の一実施例の
構成を示す図、第２図は同実施例における起倒寝台の動
作を示す図、第３図は本発明の他の実施例の構成を示す
図、第４図及び第５図は従来例の構成を示すも°のであ
って第４図は横磁場方式の装置の構成図、第５図は縦磁
場方式の装置の構成図、第６図は送受信コイルを示す図
である。
１１、．２０・・・静磁場磁石、ｌｌａ、２０ａ・・・
ヨーク部、１１ ｂｌ 、 １１ ｂ２・・・脚部、
ＩＣＩ。
１１ ｃ２＝、２０ａｌ 、２０ａ２−・・磁極、１２
、、、傾斜磁場コイル、１３・・・起倒寝台、１３ａ
・・・天板、１４・・・傾斜磁場電源、１５・・・送受
信器、１６・・・シーケンサ、１７・・・コンピュータ
システム、１８・・・モニタ、１９・・・寝台制御部。
出願人代理人 弁理士 鈴江武彦、
第１図
Ｊ
（ａ）
第 ２
Ｌ Ｊ
（Ｃ）
図
第３図
第４図
第５図
（ａ） （ｂ） （ｃ）
凛６図FIG. 1 is a diagram showing the configuration of an embodiment of a magnetic resonance diagnostic apparatus according to the present invention, FIG. 2 is a diagram showing the operation of a reclining bed in the same embodiment, and FIG. 3 is a diagram showing another embodiment of the present invention. Figures 4 and 5 show the configuration of a conventional example, in which Figure 4 is a configuration diagram of a transverse magnetic field type device, and Figure 5 is a configuration diagram of a vertical magnetic field type device. , FIG. 6 is a diagram showing the transmitting/receiving coil. 11. 20... Static magnetic field magnet, lla, 20a...
Yoke part, 11 bl, 11 b2... leg part,
I.C.I. 11 c2=, 20al, 20a2-...magnetic pole, 12
, , Gradient magnetic field coil, 13... Raising bed, 13a
... Top plate, 14... Gradient magnetic field power supply, 15... Transmitter/receiver, 16... Sequencer, 17... Computer system, 18... Monitor, 19... Bed control section. Applicant's representative Patent attorney Takehiko Suzue, Figure 1 J (a) Figure 2 L J (C) Figure 3 Figure 4 Figure 5 (a) (b) (c) Rin Figure 6
Claims (1)
向空間に配置される傾斜磁場コイル、送受信コイル及び
起倒寝台とを備え、前記静磁場コイルによって発生した
前記対向空間内の静磁場中に前記起倒寝台により被検者
を配置し、該被検者に対して前記傾斜磁場コイルにより
傾斜磁場を印加すると共に前記送受信コイルにより励起
用高周波磁場を印加して前記被検者の特定部位に磁気共
鳴現象を生じせしめ、この現象により誘起した磁気共鳴
信号を前記送受信コイルにより収集して信号処理を施す
ことにより前記特定部位の形態情報及び機能情報のうち
少なくとも一方を画像化するように構成したことを特徴
とする磁気共鳴診断装置。A static magnetic field magnet having horizontally opposed magnetic poles, a gradient magnetic field coil, a transmitting/receiving coil, and an upright bed arranged in the opposing space, and a static magnetic field generated by the static magnetic field coil in the opposing space. A subject is placed on the upright bed, a gradient magnetic field is applied to the subject by the gradient magnetic field coil, and a high-frequency magnetic field for excitation is applied by the transmitting/receiving coil to a specific region of the subject. A magnetic resonance phenomenon is generated, and magnetic resonance signals induced by this phenomenon are collected by the transmitter/receiver coil and subjected to signal processing, thereby imaging at least one of morphological information and functional information of the specific region. A magnetic resonance diagnostic device characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63136351A JPH01305937A (en) | 1988-06-02 | 1988-06-02 | Magnetic resonance diagnosis device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63136351A JPH01305937A (en) | 1988-06-02 | 1988-06-02 | Magnetic resonance diagnosis device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01305937A true JPH01305937A (en) | 1989-12-11 |
| JPH055496B2 JPH055496B2 (en) | 1993-01-22 |
Family
ID=15173157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63136351A Granted JPH01305937A (en) | 1988-06-02 | 1988-06-02 | Magnetic resonance diagnosis device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01305937A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0965853A2 (en) * | 1998-06-15 | 1999-12-22 | Ge Yokogawa Medical Systems, Ltd. | MRI vertical magnet apparatus |
| EP1689286A2 (en) * | 2003-12-01 | 2006-08-16 | Fonar Corporation | Stand-up vertical field mri apparatus |
| US7551954B2 (en) | 2002-04-25 | 2009-06-23 | Fonar Corporation | Magnetic resonance imaging with adjustable fixture apparatus |
| US7693570B2 (en) | 2002-04-25 | 2010-04-06 | Fonar Corporation | Magnetic resonance imaging with adjustable fixture apparatus |
| US8129991B2 (en) | 2004-11-24 | 2012-03-06 | Fonar Corporation | Anatomical fixture for magnetic resonance position imaging |
| US8190234B2 (en) | 2000-07-28 | 2012-05-29 | Fonar Corporation | Movable patient support with spatial locating feature |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5988140A (en) * | 1982-11-12 | 1984-05-22 | オリンパス光学工業株式会社 | Nmr endoscope diagnostic apparatus |
| JPS602243A (en) * | 1983-03-30 | 1985-01-08 | ピカ−・インタ−ナシヨナル・リミテツド | Nuclear magnetic resonance imaging apparatus |
| JPS606505U (en) * | 1983-06-22 | 1985-01-17 | 株式会社日立製作所 | Bed mechanism |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS606505B2 (en) * | 1976-10-15 | 1985-02-19 | コニカ株式会社 | Processing method for silver halide photographic materials |
-
1988
- 1988-06-02 JP JP63136351A patent/JPH01305937A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5988140A (en) * | 1982-11-12 | 1984-05-22 | オリンパス光学工業株式会社 | Nmr endoscope diagnostic apparatus |
| JPS602243A (en) * | 1983-03-30 | 1985-01-08 | ピカ−・インタ−ナシヨナル・リミテツド | Nuclear magnetic resonance imaging apparatus |
| JPS606505U (en) * | 1983-06-22 | 1985-01-17 | 株式会社日立製作所 | Bed mechanism |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0965853A2 (en) * | 1998-06-15 | 1999-12-22 | Ge Yokogawa Medical Systems, Ltd. | MRI vertical magnet apparatus |
| EP0965853A3 (en) * | 1998-06-15 | 2001-09-19 | Ge Yokogawa Medical Systems, Ltd. | MRI vertical magnet apparatus |
| US6424854B2 (en) | 1998-06-15 | 2002-07-23 | Ge Yokogawa Medical Systems, Limited | MRI vertical magnet apparatus and MRI apparatus |
| US8190234B2 (en) | 2000-07-28 | 2012-05-29 | Fonar Corporation | Movable patient support with spatial locating feature |
| US7551954B2 (en) | 2002-04-25 | 2009-06-23 | Fonar Corporation | Magnetic resonance imaging with adjustable fixture apparatus |
| US7693570B2 (en) | 2002-04-25 | 2010-04-06 | Fonar Corporation | Magnetic resonance imaging with adjustable fixture apparatus |
| EP1689286A2 (en) * | 2003-12-01 | 2006-08-16 | Fonar Corporation | Stand-up vertical field mri apparatus |
| EP1689286A4 (en) * | 2003-12-01 | 2009-03-04 | Fonar Corp | Stand-up vertical field mri apparatus |
| US8129991B2 (en) | 2004-11-24 | 2012-03-06 | Fonar Corporation | Anatomical fixture for magnetic resonance position imaging |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH055496B2 (en) | 1993-01-22 |
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