JPH0690923A - Detector with nuclear magnetic resonance - Google Patents
Detector with nuclear magnetic resonanceInfo
- Publication number
- JPH0690923A JPH0690923A JP4247598A JP24759892A JPH0690923A JP H0690923 A JPH0690923 A JP H0690923A JP 4247598 A JP4247598 A JP 4247598A JP 24759892 A JP24759892 A JP 24759892A JP H0690923 A JPH0690923 A JP H0690923A
- Authority
- JP
- Japan
- Prior art keywords
- coil
- detector
- nuclear magnetic
- magnetic resonance
- shape
- 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.)
- Pending
Links
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、核磁気共鳴現象に係
り、被検者より医学的に有効な診断情報すなわち被検体
の特定部位の断層像やスペクトルを得るのに好適な核磁
気共鳴装置を用いた検出器に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a nuclear magnetic resonance phenomenon and is suitable for obtaining medically effective diagnostic information from a subject, that is, a tomographic image or spectrum of a specific portion of the subject. Relates to a detector using.
【０００２】[0002]
【従来の技術】従来の公知例では、例えば、特開昭62−
253042号高周波磁場発生・検出器のようになっている
が、頸部撮影用の検出器では、頸椎から胸椎の一部まで
撮影する必要が臨床上あるため、人体の肩の部品を逃げ
て、検出器内に胸椎部が入る様な構造になっている。そ
のため、顔面例えば口やアゴの動きによるムービングア
ーチファクトが入ったり、胸椎の感度が相対的に低い等
の問題がある。2. Description of the Related Art In the prior art, for example, Japanese Patent Laid-Open No.
No. 253042 High-frequency magnetic field generator / detector, but with a detector for cervical imaging, it is clinically necessary to image from the cervical spine to a part of the thoracic spine, so escape the parts of the shoulder of the human body, The structure is such that the thoracic vertebra is inside the detector. Therefore, there are problems such as moving artifacts caused by movements of the face, such as the mouth and jaw, and relatively low sensitivity of the thoracic spine.
【０００３】また、従来の公知例では、分割型のコイル
において、特定のコイルとなり人体の体型及び、部位に
合わせて、複数個の組合わせで使用可能なものは無い。
そのため、フィリングファクタ（充填率）が小さい場合
で使用することとなり高感度で撮影することが出来ない
場合が生じる。Further, in the conventional known example, there is no split type coil which can be used as a specific coil in a plurality of combinations according to the body type and site of the human body.
Therefore, it is used when the filling factor (filling rate) is small, and it may not be possible to shoot with high sensitivity.
【０００４】[0004]
【発明が解決しようとする課題】従来の技術の項で記載
した様に、本発明の目的は、人体の体型に合わせて胸椎
の一部も含めて頸椎を高感度に撮影する核磁気共鳴を用
いた検出器を提供することである。SUMMARY OF THE INVENTION As described in the section of the prior art, the object of the present invention is to provide a nuclear magnetic resonance for highly sensitive imaging of the cervical spine including a part of the thoracic spine according to the body type of the human body. It is to provide a detector used.
【０００５】従来の技術では、人体の形状に合わせて、
肩部を逃げて検出が胸椎の一部まで撮影出来るようにな
っているが、このため胸椎側の感度が相対的に低くなっ
てしまう。また、顔面のアゴや、口舌等の動きにより画
像の劣化を生じる等の問題があった。また、ＮＭＲの検
出能は、次式で示されるが、個体差の体型及び、撮影部
位 〔数１〕 Ｓ／Ｎ∝η×√Ｑ（η；フィリングファクタ，Ｑ；クオ
リティファクタ） の大きさに対応した撮影は容易ではなかった。In the conventional technique, according to the shape of the human body,
Although it is possible to detect a part of the thoracic spine by escaping the shoulder, the sensitivity on the thoracic vertebra side becomes relatively low. In addition, there is a problem that the image is deteriorated due to the jaw of the face or the movement of the tongue and the like. Also, the detectability of NMR is shown by the following formula, and it depends on the body shape of individual differences and the size of the imaging site [Equation 1] S / N ∝η × √Q (η; filling factor, Q; quality factor) Corresponding shooting was not easy.
【０００６】本発明の目的は以上の課題を解決する核磁
気共鳴を用いた検出器を提供することである。An object of the present invention is to provide a detector using nuclear magnetic resonance that solves the above problems.
【０００７】[0007]
【課題を解決するための手段】前述の技術課題を解決す
るために、顔面部を開放した形状にすることで、検出器
の感度分布を改良し、胸椎側の感度を高くし、なおかつ
顔面部のアゴや口や舌のムービングアーチファクトを低
減する。また、２分割可能なコイル構造として、患者セ
ッティングの操作性を向上し、分割可能なコイルの片側
の形状を複数種用意し、形状が異なった分変わるインダ
クタンス分を容量分にて変えることで、所望の検出器の
共振周波数に合わせる。また、上下分割コイルの電気特
性を安定化させ、所望の共振周波数を確保するために基
板，コネクタを用いる。In order to solve the above-mentioned technical problems, by making the face part open, the sensitivity distribution of the detector is improved, the sensitivity on the thoracic vertebra side is increased, and Reduces jaw, mouth and tongue moving artifacts. Also, as a coil structure that can be divided into two, improving the operability of patient setting, preparing multiple types of one side of the dividable coil, and changing the amount of inductance that changes depending on the shape by the amount of capacitance, Tune to the resonance frequency of the desired detector. Further, a board and a connector are used to stabilize the electrical characteristics of the upper and lower split coils and to secure a desired resonance frequency.
【０００８】また、上下分割部を適当に選ぶことで、片
側コイルに、適当な容量分を接続することで、サーフェ
スコイルとして機能させることも可能である。Further, it is possible to function as a surface coil by appropriately selecting the upper and lower split parts and connecting an appropriate amount of capacitance to one side coil.
【０００９】[0009]
【作用】頸椎コイルにおいて顔面部に逃げがあることで
胸椎側の感度が向上する。電気的手段を用いて上下分割
形にし、上側のコイル形状の大小を設けて共振周波数の
同調を取ることで、個体差に対応してより高感度な撮影
が可能となる。また、適当な容量の定数の上側の回路を
用いることで接続時サーフェスコイルとしての使用が可
能となる。電気的な接続部にコネクタ及び基板を用いる
ことで、機械的な強度及び位置精度を確保出来て、信頼
性の向上が図れる。また、上側コイルもしくは下側コイ
ルの片側に板状のガイドを設けることで着脱の操作性が
向上する。[Function] Since the cervical spine coil has a clearance in the face portion, the sensitivity on the thoracic spine side is improved. By using an electric means to divide into upper and lower parts, and by providing the upper and lower coil shapes to tune the resonance frequency, it is possible to perform higher-sensitivity imaging corresponding to individual differences. Further, by using a circuit on the upper side of a constant of an appropriate capacity, it becomes possible to use it as a surface coil at the time of connection. By using the connector and the board for the electrical connection portion, mechanical strength and positional accuracy can be secured, and reliability can be improved. Further, by providing a plate-shaped guide on one side of the upper coil or the lower coil, the operability of attachment / detachment is improved.
【００１０】[0010]
【実施例】以下本発明の実施例を図１を用いて説明す
る。図１は本発明の実施例を示す外観図である。構成
は、下側コイル１と、上側コイル２が、電気的に接続さ
れており、図２に示す通り上下に分割可能な構造となっ
ている。上側コイルを接続しやすい様にガイド６があ
り、ストッパ７が上下のコイルを固定出来る様になって
いる。形状は、被検者の形が当たらない様に下側コイル
の逃げ部３，上側コイルの逃げ部４がある。これによっ
て、被検者の胸部の上側までコイルが被いかぶさること
で胸椎の３〜４番の撮影が可能となる。さらに、本発明
の実施例である上側コイルの顔面部の逃げ部５がある。EXAMPLE An example of the present invention will be described below with reference to FIG. FIG. 1 is an external view showing an embodiment of the present invention. The configuration is such that the lower coil 1 and the upper coil 2 are electrically connected and can be divided into upper and lower parts as shown in FIG. There is a guide 6 so that the upper coil can be easily connected, and a stopper 7 can fix the upper and lower coils. As for the shape, there is a relief portion 3 for the lower coil and a relief portion 4 for the upper coil so that the shape of the subject does not hit. As a result, it is possible to image the thoracic spine Nos. 3 to 4 by covering the upper part of the chest of the subject with the coil. Further, there is a relief portion 5 on the face portion of the upper coil which is an embodiment of the present invention.
【００１１】一方従来例のコイルを図６を用いて説明す
る。図示の様に肩の逃げ部を設けているが、顔面の逃げ
部は無く窓を設けている。そのため、本発明の実施例の
コイルでは、顔面部からの信号は低信号となり口や舌に
よるムービングアーチファクトは生じない。そのため、
より有効な臨床画像が得られる。さらに、胸椎側の信号
強度が強くなり、胸椎の３〜４番の撮影が容易となる。
頸椎撮影の場合においても胸椎の２〜３番目までの同時
撮影は臨床上極めて重要である。実験結果で、図８，図
９のＲＦコイルの失状断面での模式的な感度分布及びＺ
軸上の信号強度曲線を示す。これからも分る様に臨床上
有効な胸椎側の感度が向上し、顔面部の感度は低下して
いる。コイル中心から８cm胸椎側での感度は約３割向上
した。On the other hand, a conventional coil will be described with reference to FIG. Although a shoulder relief is provided as shown, there is no face relief and a window is provided. Therefore, in the coil of the embodiment of the present invention, the signal from the face portion is a low signal, and the moving artifact due to the mouth or tongue does not occur. for that reason,
More effective clinical images are obtained. Furthermore, the signal intensity on the thoracic vertebra side becomes stronger, and the imaging of the thoracic vertebrae Nos.
Even in the case of cervical vertebrae, simultaneous imaging of the second to third thoracic vertebrae is clinically very important. The experimental results show the typical sensitivity distribution and Z in the lossy cross section of the RF coil in FIGS.
The signal intensity curve on the axis is shown. As can be seen from the above, the clinically effective sensitivity on the thoracic vertebra side is improved, and the sensitivity on the facial part is decreased. The sensitivity on the thoracic vertebra side 8 cm from the center of the coil was improved by about 30%.
【００１２】また、コイルの形状により感度分布は規定
されるため、コイル方式には、かかわらない。本発明で
の種々のコイル方式での実施例の模式的な回路図を次に
示す。図５では、スロットチューブレゾネータの場合
を、図６では、くら形コイルの場合を、図７ではマルチ
エレメント形コイルの場合をそれぞれ示している。Further, since the sensitivity distribution is defined by the shape of the coil, the coil system does not matter. The following are schematic circuit diagrams of embodiments of various coil systems according to the present invention. FIG. 5 shows the case of the slot tube resonator, FIG. 6 shows the case of the saddle coil, and FIG. 7 shows the case of the multi-element type coil.
【００１３】また、本発明の別の実施例を図１０，図１
１を用いて説明する。一般的にＲＦコイルの感度は次式
で示される。Another embodiment of the present invention is shown in FIGS.
This will be described using 1. Generally, the sensitivity of the RF coil is expressed by the following equation.
【００１４】〔数２〕 Ｓ／Ｎ∝η×√Ｑ η；フィリングファクタ，Ｑ；ク
オリティファクタ ηはフィリングファクタ（充填率）を表わし、単純に
は、ＲＦコイルに対するサンプルの占める体積の比率で
ある。一方、サンプルは被検者になるため個体差により
頭部の大きさ，胸板の厚さは異なる。そのため子供や老
女の様に小柄の体型の人では図１０に示すコイルの方が
高感度で撮影出来る。また、体格の大きな胸板の厚い人
は、図１１に示す様な上下の距離があるコイルを用いる
とより胸椎側の撮影が可能となる。[Formula 2] S / N ∝η × √Q η; Filling factor, Q; Quality factor η represents a filling factor (filling rate), and is simply a ratio of the volume occupied by the sample to the RF coil. . On the other hand, since the sample is a subject, the size of the head and the thickness of the chest plate differ depending on individual differences. Therefore, for a person with a small body such as a child or an old woman, the coil shown in FIG. 10 can be photographed with higher sensitivity. In addition, a person with a large physique and a thick chest plate can use a coil having a vertical distance as shown in FIG.
【００１５】これを実現するには、次の様な手段を用い
る。ＮＭＲのラーモア周波数に対応したＲＦコイルの共
振周波数は次式で示される。To realize this, the following means are used. The resonance frequency of the RF coil corresponding to the Larmor frequency of NMR is given by the following equation.
【００１６】〔数３〕 ｆ0＝１／２π√ＬＣ （Ｌ；インダクタンス，Ｃ；
キャパシタ） よって上側コイルの形状が変わった分インダクタンスが
異なるため共振周波数に対応して、キャパシタを調整す
れば良いことになる。例えば、図１０の様に上側コイル
の大きさが小さい分インダクタンスが減少する。その分
キャパシタを増して、共振周波数に調整すれば良い。以
上より下側コイルのみを準備し、種々の上側コイルを用
意することで、個体差に対応して、最適な感度で臨床上
有効な撮影が可能となる。[Formula 3] f 0 = 1 / 2π√LC (L; inductance, C;
Capacitor) Therefore, since the inductance changes depending on the shape of the upper coil, the capacitor may be adjusted according to the resonance frequency. For example, as shown in FIG. 10, the smaller the size of the upper coil, the smaller the inductance. The capacitors may be increased by that amount to adjust the resonance frequency. As described above, by preparing only the lower coil and various upper coils, clinically effective imaging can be performed with optimum sensitivity in response to individual differences.
【００１７】また、本発明の別の実施例を図１３を用い
て説明する。本実施例では、上側のコイルは、信号検出
には寄与せず、下側コイルの共振周波数の同調のみに働
く。これを接続することで、共振周波数に同調が取れる
ため下側コイルのみが信号検出に寄与しサーフェスコイ
ルとして働く。臨床上頸椎の下側の感度が特に欲しい場
合、例えばやせた被検者でＭＲミエロ撮影の時等に有効
である。以上の実施例により共通の下側コイルのみを準
備することでサーフェスコイルとして使用することも可
能となる。Another embodiment of the present invention will be described with reference to FIG. In this embodiment, the upper coil does not contribute to signal detection, but works only for tuning the resonance frequency of the lower coil. By connecting this, the resonance frequency can be tuned, and only the lower coil contributes to signal detection and functions as a surface coil. This is effective when the sensitivity of the lower side of the cervical spine is clinically desired, for example, when MR myelography is performed on a thin test subject. By preparing only the common lower coil according to the above embodiment, it is possible to use it as a surface coil.
【００１８】本発明の場合の実施例の模式的回路図をそ
れぞれ図１４，図１５，図１６に示す。Schematic circuit diagrams of embodiments of the present invention are shown in FIGS. 14, 15 and 16, respectively.
【００１９】また、本発明では、上側コイルと下側コイ
ルの電気的接続手段に、基板とコネクタを用いたことを
特徴とする。この場合の実施例を図１２に示す。基板を
用いることで、上側コイルと下側コイルの接続部の位置
合わせ、及び平面度等が容易に調整出来て、かつ抜差の
機械的強度を確保することが出来る。また、コネクタを
用いて、多数のピンの接続を設けることで接触不良を防
止出来信頼性の確保が可能となる。フラッシュ形のコネ
タクを用いることで約２０００回の抜差においても接触
抵抗は問題とはならなかった。さらにコネクタと基板を
ハンダ付し一体化することでメンテナンスの容易さも得
られる。基板とコイル間はねじ止め及び導電塗料の貼付
により充分な性能が得られる。また板状のガイドを左右
に設けることで抜差が容易となる。Further, the present invention is characterized in that a board and a connector are used as an electrical connecting means for the upper coil and the lower coil. An example of this case is shown in FIG. By using the substrate, it is possible to easily adjust the position of the connecting portion of the upper coil and the lower coil, the flatness, etc., and to secure the mechanical strength of the slippage. Further, by using a connector to connect a large number of pins, contact failure can be prevented and reliability can be ensured. By using the flash type connector, the contact resistance did not become a problem even with a slip of about 2000 times. Further, the connector and the board are soldered and integrated to facilitate maintenance. Sufficient performance can be obtained by screwing between the substrate and the coil and attaching conductive paint. Further, by providing the plate-shaped guides on the left and right, it becomes easy to insert and remove.
【００２０】また、本発明の別の応用例を図１７，図１
８，図１９に示す。本例では、全身コイルを上下分割形
としており体形に合わせて、最適な感度を得る様にして
いる。また、下側コイルと共振の同調を取る上側とで脊
椎様のサーフェスコイルとして使用することも可能であ
り、方式は前述と同じある。また、左右の位置合わせを
容易にするため板状のガイドを左右に設けている。Another application example of the present invention is shown in FIGS.
8 and FIG. In this example, the whole-body coil is divided into upper and lower parts, and the optimum sensitivity is obtained according to the body shape. It is also possible to use it as a spine-like surface coil with the lower coil and the upper side for resonance tuning, and the method is the same as described above. In addition, plate-shaped guides are provided on the left and right to facilitate the left and right alignment.
【００２１】[0021]
【発明の効果】頸椎コイルにおいて顔面の部分を逃げる
コイル形状とすることで胸椎側の感度が向上し、コイル
中心より８cm下側で従来のものに比べ約３割向上した。
これにより臨床上有効な胸椎の３〜４番目の撮影も可能
となった。上側コイルの大きなの異なるものを用意する
ことで、被患者の個体差に対応して、より高感度で撮影
出来、従来のものに比べ上下の高さを２８０mmから２４
０mmにすることで約２割近くの感度向上が得られる。ま
た、上側の回路定数を適当に調整することで、サーフェ
スコイルとしても使用出来る。EFFECTS OF THE INVENTION The cervical spine coil has a coil shape that allows the face portion to escape, so that the sensitivity on the thoracic spine side is improved, and it is about 30% higher than the conventional one at 8 cm below the coil center.
This also made it possible to take clinically effective 3rd to 4th images of the thoracic spine. By preparing a large upper coil with different size, it is possible to shoot with higher sensitivity according to the individual difference of the patient, and the vertical height from 280 mm to 24 mm compared to the conventional one.
By setting it to 0 mm, the sensitivity improvement of about 20% can be obtained. It can also be used as a surface coil by appropriately adjusting the upper circuit constant.
【図１】本発明の１実施例を示す外観図である。FIG. 1 is an external view showing an embodiment of the present invention.
【図２】本発明の１実施例の構成を示す外観図である。FIG. 2 is an external view showing the configuration of one embodiment of the present invention.
【図３】本発明の１実施例を示し、スロットチューブレ
ゾネータ形の場合の模式的回路図である。FIG. 3 is a schematic circuit diagram showing a slot tube resonator type according to an embodiment of the present invention.
【図４】本発明の１実施例を示し、くら形コイルの場合
の模式的な回路図である。FIG. 4 is a schematic circuit diagram showing an embodiment of the present invention in the case of a paddle coil.
【図５】本発明の１実施例を示し、マルチエレメント形
の場合の模式的な回路図である。FIG. 5 is a schematic circuit diagram showing a multi-element type according to an embodiment of the present invention.
【図６】従来例を示す外観図である。FIG. 6 is an external view showing a conventional example.
【図７】従来例を示す模式的な回路図である。FIG. 7 is a schematic circuit diagram showing a conventional example.
【図８】従来例の模式的な感度分布とＺ軸での信号強度
曲線図である。FIG. 8 is a schematic sensitivity distribution diagram of a conventional example and a signal intensity curve diagram on the Z axis.
【図９】本発明の１実施例の模式的な感度分布とＺ軸で
の信号強度曲線図である。FIG. 9 is a schematic sensitivity distribution diagram and a signal intensity curve diagram on the Z axis according to the first embodiment of the present invention.
【図１０】本発明の１実施例の応用例を示す外観図であ
る。FIG. 10 is an external view showing an application example of one embodiment of the present invention.
【図１１】本発明の１実施例の応用例を示す外観図であ
る。FIG. 11 is an external view showing an application example of one embodiment of the present invention.
【図１２】本発明の１実施例を示しＲＦコイルの電気的
な接続手段を示す外観図である。FIG. 12 is an external view showing an electrical connection means of the RF coil according to the embodiment of the present invention.
【図１３】本発明の別の実施例を示し、サーフェスコイ
ルを構成する場合の模式的回路図である。FIG. 13 is a schematic circuit diagram showing a surface coil according to another embodiment of the present invention.
【図１４】本発明のサーフェスコイルでの１実施例を示
し、スロットチューブレゾネータ形の場合の模式的回路
図である。FIG. 14 is a schematic circuit diagram showing one embodiment of the surface coil of the present invention and a slot tube resonator type.
【図１５】本発明のサーフェスコイルでの１実施例を示
し、分割同調形の場合の模式的な回路図である。FIG. 15 is a schematic circuit diagram showing one embodiment of the surface coil of the present invention and in the case of a split tuning type.
【図１６】本発明のサーフェスコイルでの１実施例を示
し、マルチエレメント形の場合の模式的な回路図であ
る。FIG. 16 is a schematic circuit diagram showing an example of a surface coil of the present invention and is a multi-element type.
【図１７】本発明の別の実施例を示し、全身コイルの場
合の外観図である。FIG. 17 is an external view of a whole body coil according to another embodiment of the present invention.
【図１８】本発明の別の実施例を示し、全身コイルの場
合の外観図である。FIG. 18 is an external view of a whole body coil according to another embodiment of the present invention.
【図１９】本発明の別の実施例を示し、サーフェスコイ
ルの場合の外観図である。FIG. 19 is an external view of a surface coil according to another embodiment of the present invention.
１…下側コイル、２…上側コイル、３…下側コイルの肩
の逃げ部、４…上側コイルの肩の逃げ部、５…上側コイ
ルの顔面の逃げ部、６…ガイド、７…ストッパ、８…キ
ャパシタ（容量）、９…インダクタンス、１０…従来例
のコイル、１１…窓部、１２…コイルの失状断面の感度
分布の模式図、１３…失状断面のＺ軸上の信号強度曲
線、１４…本発明の応用例を示す上側コイル、１５…コ
ネクタ、１６…基板、１７…コイル、１８…本発明の応
用例を示すサーフェスコイルを形成する適当な容量分を
持つ部材。DESCRIPTION OF SYMBOLS 1 ... Lower coil, 2 ... Upper coil, 3 ... Shoulder relief part of lower coil, 4 ... Shoulder relief part of upper coil, 5 ... Face relief part of upper coil, 6 ... Guide, 7 ... Stopper, 8 ... Capacitor (capacitance), 9 ... Inductance, 10 ... Conventional example coil, 11 ... Window part, 12 ... Schematic diagram of sensitivity distribution of a missing cross section of the coil, 13 ... Signal intensity curve on Z axis of the missing cross section , 14 ... Upper coil showing an application example of the present invention, 15 ... Connector, 16 ... Substrate, 17 ... Coil, 18 ... A member having an appropriate capacity for forming a surface coil showing an application example of the present invention.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.5 識別記号 庁内整理番号 ＦＩ 技術表示箇所 9219−2Ｊ Ｇ０１Ｎ 24/04 Ｃ ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 5 Identification code Office reference number FI technical display location 9219-2J G01N 24/04 C
Claims (5)
と位置によって強度の異なる傾斜磁界を発生する磁場手
段とを組合わせ、該被検体に核磁気共鳴現象を起させる
高周波磁界発生の手段と、核磁気共鳴信号を検出する検
出器と、信号を増幅する増幅器と、増幅された信号に演
算処理を行なう計算機と、演算処理された信号を表示す
る表示手段とを有する核磁気共鳴に用いる前記検出器と
して、人体の形状に合わせて、肩の部分が当たらない形
状で、かつ顔面部が開放した形状を特徴とする核磁気共
鳴を用いた検出器。1. A combination of magnetic field means for applying a uniform static magnetic field to a subject and magnetic field means for generating a gradient magnetic field having different strengths depending on the position to generate a high frequency magnetic field for causing a nuclear magnetic resonance phenomenon in the subject. Nuclear magnetic resonance having means, a detector for detecting a nuclear magnetic resonance signal, an amplifier for amplifying the signal, a computer for performing arithmetic processing on the amplified signal, and a display means for displaying the arithmetically processed signal. As the detector to be used, a detector using nuclear magnetic resonance characterized by a shape in which the shoulder portion does not hit and a shape in which the face portion is open according to the shape of the human body.
な検出器において、一方が形状が異なりかつ、もう一方
と共鳴周波数が容量にて調整されており、複数の接続可
能な形状の種類の片側を持つ構成とすることを特徴とす
る核磁気共鳴を用いた検出器。2. A two-dividable detector provided with means for electrically connecting, wherein one has a different shape and the other has a resonance frequency adjusted by a capacitance, and a plurality of connectable shapes are provided. A detector using nuclear magnetic resonance, which is characterized by having one side of each type.
に接続する手段にコネクタと基板を用いることを特徴と
する核磁気共鳴を用いた検出器。3. The detector according to claim 1 or 2, wherein a connector and a substrate are used as means for electrically connecting the detector.
分割可能で電気的に接続可能な片側に対して、適当な容
量を持ち接続するとサーフェスコイルとして機能するこ
とを特徴とする核磁気共鳴を用いた検出器。4. The detector according to claim 1, 2 or 3, wherein
A detector using nuclear magnetic resonance characterized in that it has a suitable capacity and functions as a surface coil on one side that is dividable and electrically connectable.
ルの左右の合わせに板状のガイドを設けたことを特徴と
する核磁気共鳴を用いた検出器。5. A detector using nuclear magnetic resonance according to claim 3, wherein a plate-shaped guide is provided at the left and right of the upper coil and the lower coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4247598A JPH0690923A (en) | 1992-09-17 | 1992-09-17 | Detector with nuclear magnetic resonance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4247598A JPH0690923A (en) | 1992-09-17 | 1992-09-17 | Detector with nuclear magnetic resonance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0690923A true JPH0690923A (en) | 1994-04-05 |
Family
ID=17165899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4247598A Pending JPH0690923A (en) | 1992-09-17 | 1992-09-17 | Detector with nuclear magnetic resonance |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0690923A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0930510A3 (en) * | 1997-12-26 | 2001-04-11 | Ge Yokogawa Medical Systems, Ltd. | Detecting coil for magnetic resonance diagnostic apparatus |
| JP2010207464A (en) * | 2009-03-11 | 2010-09-24 | Toshiba Corp | High frequency coil unit |
| US9545218B2 (en) | 2010-11-17 | 2017-01-17 | Toshiba Medical Systems Corporation | RF coil device and magnetic resonance imaging apparatus |
| WO2018097865A1 (en) * | 2016-11-25 | 2018-05-31 | General Electric Company | A radio frequency head coil for a magnetic resonance imaging system and methods thereof |
| CN108420452A (en) * | 2018-04-11 | 2018-08-21 | 上海联影医疗科技有限公司 | Examination couch and the medical image system for using the examination couch |
| EP3928109A4 (en) * | 2019-02-22 | 2022-12-14 | Promaxo, Inc. | Pseudo-birdcage coil with variable tuning and applications thereof |
-
1992
- 1992-09-17 JP JP4247598A patent/JPH0690923A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0930510A3 (en) * | 1997-12-26 | 2001-04-11 | Ge Yokogawa Medical Systems, Ltd. | Detecting coil for magnetic resonance diagnostic apparatus |
| JP2010207464A (en) * | 2009-03-11 | 2010-09-24 | Toshiba Corp | High frequency coil unit |
| US9545218B2 (en) | 2010-11-17 | 2017-01-17 | Toshiba Medical Systems Corporation | RF coil device and magnetic resonance imaging apparatus |
| WO2018097865A1 (en) * | 2016-11-25 | 2018-05-31 | General Electric Company | A radio frequency head coil for a magnetic resonance imaging system and methods thereof |
| CN108420452A (en) * | 2018-04-11 | 2018-08-21 | 上海联影医疗科技有限公司 | Examination couch and the medical image system for using the examination couch |
| EP3928109A4 (en) * | 2019-02-22 | 2022-12-14 | Promaxo, Inc. | Pseudo-birdcage coil with variable tuning and applications thereof |
| US11656303B2 (en) | 2019-02-22 | 2023-05-23 | Promaxo, Inc. | Pseudo-birdcage coil with variable tuning and applications thereof |
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