JP2006136359A - Magnetic resonance imaging apparatus - Google Patents

Magnetic resonance imaging apparatus Download PDF

Info

Publication number
JP2006136359A
JP2006136359A JP2004325990A JP2004325990A JP2006136359A JP 2006136359 A JP2006136359 A JP 2006136359A JP 2004325990 A JP2004325990 A JP 2004325990A JP 2004325990 A JP2004325990 A JP 2004325990A JP 2006136359 A JP2006136359 A JP 2006136359A
Authority
JP
Japan
Prior art keywords
patient
magnetic resonance
magnetic field
imaging apparatus
image
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
Application number
JP2004325990A
Other languages
Japanese (ja)
Inventor
Hiroshi Shirakawa
洋 白川
Kento Yamada
研登 山田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Healthcare Manufacturing Ltd
Original Assignee
Hitachi Medical Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Medical Corp filed Critical Hitachi Medical Corp
Priority to JP2004325990A priority Critical patent/JP2006136359A/en
Publication of JP2006136359A publication Critical patent/JP2006136359A/en
Pending legal-status Critical Current

Links

Images

Landscapes

  • Magnetic Resonance Imaging Apparatus (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a magnetic resonance imaging apparatus with improved safety, and the like in the interventional magnetic resonance (I-MR) for obtaining a magnetic resonance image while performing an operation. <P>SOLUTION: This magnetic resonance imaging apparatus 1 is mounted inside an operation room together with surgical instruments, and the like, and comprises a static magnetic field generating means for generating a static magnetic field for obtaining the magnetic resonance image of a patient by utilizing the operation performed for the patient and a magnetic resonance phenomenon. The magnetic resonance imaging apparatus has a movable safety screen 40 for preventing a magnetic body such as a surgical instrument put inside the operation room from plunging into an opening of the static magnetic field generating means from the opening. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は磁気共鳴イメージング装置(以下、MRI装置という。)に係り、特に、医師が画像観察の下に治療を行う際に好適な磁気共鳴イメージング装置に係る。   The present invention relates to a magnetic resonance imaging apparatus (hereinafter referred to as an MRI apparatus), and more particularly to a magnetic resonance imaging apparatus suitable for a doctor performing treatment under image observation.

MRI装置は、均一な静磁場内に置かれた患者に電磁波を照射したときに、患者を構成する原子の原子核から核磁気共鳴現象によって放出される核磁気共鳴信号(以下、NMR信号という。)を検出し、このNMR信号を使って画像を再構成することにより、患者の物理的性質をあらわす磁気共鳴画像(以下、MR画像という。)を得るものである。   An MRI apparatus, when a patient placed in a uniform static magnetic field is irradiated with electromagnetic waves, a nuclear magnetic resonance signal (hereinafter referred to as an NMR signal) emitted from the atomic nucleus constituting the patient by a nuclear magnetic resonance phenomenon. Is detected, and an image is reconstructed using this NMR signal to obtain a magnetic resonance image (hereinafter referred to as an MR image) representing the physical properties of the patient.

近年、オープン型の、即ち広い開口を有するガントリを持つオープンMRI装置が開発され、一方で高速撮像法シーケンスや透視シーケンスの技術的革新がもたらされ、MRI装置は、X線等による被曝がなく組織分解能にも優れているので、治療分野への適用が急速に発展してきた。医用画像診断装置のうちX線を用いる装置を治療分野へ適用する手技はインターベンショナル・ラジオロジー(Interventional Radiology:IVR)と称され、MRI装置を治療分野へ適用する手技は、I−MR(Interventional MR)と称される。   In recent years, open-type, that is, open MRI devices with a wide gantry have been developed. On the other hand, technological innovations in high-speed imaging and fluoroscopy sequences have been introduced. Because of its excellent tissue resolution, its application in the therapeutic field has rapidly developed. A technique for applying an X-ray device among medical diagnostic imaging apparatuses to the therapeutic field is called Interventional Radiology (IVR), and a technique for applying an MRI apparatus to the therapeutic field is I-MR ( Interventional MR).

I−MRとは、オープンMRI装置のガントリ内に患者を配置し、MR高速撮像法やMR透視法(MR Fluoroscopy)を患者の治療部を画像化して確認しながら治療を行うInterventional−MRと、ガントリ外にて患者に対し外科的手技を行うが、必要に応じて患者をガントリ内に挿入して治療状況を確認して、再度患者をガントリ外へ移動し、外科的治療を追加するIntraoperative−MRの総称である。(非特許文献1参照。)
Neurosurgery, Vol.40,No.5,May 1997、P891〜P902 I-MR is an interventional MR that places a patient in the gantry of an open MRI device and performs treatment while confirming MR high-speed imaging and MR fluoroscopy by imaging the treatment part of the patient, Intraoperative-Performing surgical procedures on patients outside the gantry, inserting the patient into the gantry as necessary, checking the treatment status, moving the patient out of the gantry again, and adding surgical treatment It is a general term for MR. (See Non-Patent Document 1.)
Neurosurgery, Vol.40, No.5, May 1997, P891-P902

手術室内に手術に用いられる器具や周辺機器等をMRI装置とともに配置した従来技術として、特許文献1がある。
特開2003−265436号公報 There is Patent Document 1 as a prior art in which instruments used for surgery, peripheral devices, and the like are arranged together with an MRI apparatus in an operating room.
Japanese Patent Laid-Open No. 2003-265436

本発明者は、上記従来技術を検討した結果、以下の問題点を見い出した。すなわち、特許文献1に記載されているような様々な器具や周辺機器が配置された手術室内で、患者をガントリ内やガントリ外へ移動させてI−MRを行う場合、器具や周辺機器の中に鉄等の磁性体が含まれると、それらが不意にMRI装置の方向へ静磁場によって吸引され、ガントリの近傍にいる患者や操作者にとって、大変危険だった。   The present inventor has found the following problems as a result of studying the above prior art. That is, when performing I-MR by moving a patient in and out of the gantry in an operating room where various instruments and peripheral devices as described in Patent Document 1 are arranged, When magnetic materials such as iron were included in the magnetic field, they were unexpectedly attracted by a static magnetic field in the direction of the MRI machine, which was very dangerous for patients and operators in the vicinity of the gantry.

本発明の目的は、手術を行いながら磁気共鳴画像を得るI−MRを行う際の安全性等を向上させたMRI装置を提供することにある。   The objective of this invention is providing the MRI apparatus which improved the safety | security etc. at the time of performing I-MR which acquires a magnetic resonance image, performing surgery.

本発明の第一の特徴によれば、手術室内に手術用具等と共に設けられ、静磁場を発生する静磁場発生手段を備え、患者に行う手術と共に磁気共鳴現象を利用して前記患者の磁気共鳴画像を得る磁気共鳴イメージング装置において、前記手術室内に置かれている手術具等の磁性体であるものが前記静磁場発生手段の開口から開口内へ飛び込むことを防ぐための安全衝立を移動可能に設けたことを特徴とする磁気共鳴イメージング装置が提供される。   According to the first aspect of the present invention, a static magnetic field generating means for generating a static magnetic field is provided in the operating room together with a surgical tool and the like. In the magnetic resonance imaging apparatus for obtaining an image, a safety screen for preventing a magnetic body such as a surgical tool placed in the operating room from jumping into the opening from the opening of the static magnetic field generating means can be moved. A magnetic resonance imaging apparatus is provided.

また本発明の第二の特徴によれば、前記手術室内には、前記患者に手術を行っている最中に前記患者の手術部位を撮影する手術用顕微鏡を更に備え、前記安全衝立には、前記磁気共鳴画像と前記手術用顕微鏡による画像とを択一的に又は同時に表示する手段を備えたことを特徴とする本発明の第1の特徴を併せ持つ磁気共鳴イメージング装置が提供される。 Further, according to the second feature of the present invention, the operating room further includes a surgical microscope for imaging the surgical site of the patient during the operation on the patient, There is provided a magnetic resonance imaging apparatus having the first feature of the present invention, characterized by comprising means for alternatively or simultaneously displaying the magnetic resonance image and the image obtained by the surgical microscope.

本発明によれば、手術を行いながら磁気共鳴画像を得るI−MRを行う際の安全性等を向上させた磁気共鳴イメージング装置が提供される。   ADVANTAGE OF THE INVENTION According to this invention, the magnetic resonance imaging apparatus which improved the safety | security etc. at the time of performing I-MR which acquires a magnetic resonance image while performing surgery is provided.

以下、一般的なMRI装置のシステム構成を図1により詳細に説明する。
MRI装置は大別して、中央処理装置(以下、CPUと略称する)1と、シーケンサ2と、送信系3と、静磁場発生用磁石4と、受信系5と、傾斜磁場発生系21と、信号処理系6とから構成されている。 Hereinafter, a system configuration of a general MRI apparatus will be described in detail with reference to FIG.
The MRI apparatus is roughly classified into a central processing unit (hereinafter abbreviated as CPU) 1, a sequencer 2, a transmission system 3, a static magnetic field generating magnet 4, a receiving system 5, a gradient magnetic field generating system 21, and a signal. It consists of a processing system 6.

CPU1は、予め定められたプログラムに従って、シーケンサ2、送信系3、受信系5、信号処理系6を制御するようになっている。シーケンサ2は、CPU1からの制御指令に基づいて動作し、患者7の断層面の画像データ収集に必要な種々の命令を送信系3、傾斜磁場発生系21、受信系5に送るようになっている。   The CPU 1 controls the sequencer 2, the transmission system 3, the reception system 5, and the signal processing system 6 according to a predetermined program. The sequencer 2 operates based on a control command from the CPU 1 and sends various commands necessary for collecting image data of the tomographic plane of the patient 7 to the transmission system 3, the gradient magnetic field generation system 21, and the reception system 5. Yes.

送信系3は、高周波発振器8と、変調器9と、照射コイル11とを備え、シーケンサ2の指令により高周波発振器8からの基準高周波パルスを変調器9で振幅変調し、この振幅変調された高周波パルスを高周波増幅器10を介して増幅して照射コイル11に供給することにより、所定のパルス状の電磁波を患者に照射するようになっている。   The transmission system 3 includes a high frequency oscillator 8, a modulator 9, and an irradiation coil 11. The reference high frequency pulse from the high frequency oscillator 8 is amplitude-modulated by the modulator 9 according to a command from the sequencer 2, and the amplitude-modulated high frequency By amplifying the pulse through the high-frequency amplifier 10 and supplying it to the irradiation coil 11, the patient is irradiated with a predetermined pulsed electromagnetic wave.

静磁場発生用磁石4は、患者7の周りの所定の方向に均一な静磁場を発生させるためのものである。この静磁場発生用磁石4の内部には、照射コイル11と、傾斜磁場コイル13と、受信コイル14とが配置されている。傾斜磁場コイル13は傾斜磁場発生系21に含まれ、傾斜磁場電源12より電流の供給を受け、シーケンサ2の制御のもとに傾斜磁場を発生させる。   The static magnetic field generating magnet 4 is for generating a uniform static magnetic field in a predetermined direction around the patient 7. In the static magnetic field generating magnet 4, an irradiation coil 11, a gradient magnetic field coil 13, and a receiving coil 14 are arranged. The gradient magnetic field coil 13 is included in the gradient magnetic field generation system 21 and receives a current supplied from the gradient magnetic field power supply 12 and generates a gradient magnetic field under the control of the sequencer 2.

受信系5は、患者の生体組織の原子核の核磁気共鳴により放出される高周波信号(NMR信号)を検出するもので、受信コイル14と増幅器15と直交位相検波器16とA／D変換器17とを有しており、上記照射コイル14から照射された電磁波による患者の応答の高周波信号(NMR信号)は患者に近接して配置された受信コイル14で検出され、増幅器15及び直交位相検波器16を介してA／D変換器17に入力され、ディジタル量に変換され、その信号がCPU1に送られるようになっている。   The receiving system 5 detects a high-frequency signal (NMR signal) emitted by nuclear magnetic resonance of nuclei of a patient's living tissue, and includes a receiving coil 14, an amplifier 15, a quadrature detector 16, and an A / D converter 17. A high frequency signal (NMR signal) of a patient's response due to the electromagnetic wave irradiated from the irradiation coil 14 is detected by the reception coil 14 disposed close to the patient, and the amplifier 15 and the quadrature detector The signal is input to the A / D converter 17 via 16 and converted into a digital quantity, and the signal is sent to the CPU 1.

信号処理系6は、磁気ディスク20、光ディスク19などの外部記憶装置と、CRTなどからなるディスプレイ18とを備え、受信系5からのデータがCPU1に入力されると、CPU1が信号処理、画像再構成などの処理を実行し、その結果である患者7の所望の断層面の画像をディスプレイ18で表示すると共に、外部記憶装置の磁気ディスク20などに記憶するようになっている。   The signal processing system 6 includes an external storage device such as a magnetic disk 20 and an optical disk 19 and a display 18 such as a CRT. When data from the reception system 5 is input to the CPU 1, the CPU 1 performs signal processing and image re-processing. Processing such as configuration is executed, and the resulting image of a desired tomographic plane of the patient 7 is displayed on the display 18 and stored in the magnetic disk 20 of the external storage device or the like.

次に図2を用い、本発明の第1の実施例について説明する。図2ではMRI装置は手術室内に配置され、患者がMRI装置から離れた位置において手術を受けている際の様子を示す。すなわち、図2では患者はMRI装置から離れた位置において、下記に説明する各手術用具に囲まれて位置している。以下、手術室内の各装置、器具を順に説明する。   Next, a first embodiment of the present invention will be described with reference to FIG. FIG. 2 shows a state where the MRI apparatus is placed in the operating room and the patient is undergoing surgery at a position away from the MRI apparatus. That is, in FIG. 2, the patient is located at a position away from the MRI apparatus and surrounded by each surgical tool described below. Hereinafter, each device and instrument in the operating room will be described in order.

31は本実施例で患者の断層像撮影のために用いられるMRI装置であり、上下に対向して配置された永久磁石を1本の柱で支える方式のオープンMRI装置である。32は寝台、7は患者であり、寝台32は患者7を支えるとともに、患者7を手術室内で移動できるようになっている。33は顕微鏡であり、患者の手術を術者が行っている最中に、その手術部位をその場で撮影して拡大して即時に診断したり、手術による患部の摘出状況を把握できるようにするためのものである。34は麻酔機であり、手術が行われる患者7へ麻酔薬を注入したり麻酔のための気体を患者に吸引させたりするための処理をする各種器具が備えられている。35は無影灯であり、手術室内を明るく照らすためのものである。36はMRI装置1によって撮影したMR画像や顕微鏡によって撮影した手術部位の映像を後述する安全衝立40に、光学的に投影して写し出すためのプロジェクタである。39は反射鏡であり、プロジェクタ36によって発せられた光学像をここで反射して、安全衝立40の方向へ光路を変更するためのものである。40は安全衝立であり、患者7が手術を受けている図2のような場合等に、磁性体の手術具が患者7が置かれている側からMRI装置の静磁場によって吸引されて、MRI装置のガントリ内に飛び込むことを防ぐためのものである。41は安全壁40を支持する支持具である。   Reference numeral 31 denotes an MRI apparatus used for tomographic imaging of a patient in this embodiment, which is an open MRI apparatus of a type in which a permanent magnet disposed so as to face the upper and lower sides is supported by one pillar. Reference numeral 32 denotes a bed and 7 denotes a patient. The bed 32 supports the patient 7, and the patient 7 can be moved in the operating room. 33 is a microscope that allows the surgeon to perform an immediate diagnosis by magnifying the surgical site while taking the patient's surgery, and to grasp the removal status of the affected part by surgery. Is to do. Reference numeral 34 denotes an anesthesia machine, which is equipped with various instruments for injecting an anesthetic into the patient 7 to be operated and for causing the patient to inhale the gas for anesthesia. 35 is a surgical light for brightly illuminating the operating room. Reference numeral 36 denotes a projector for optically projecting an MR image taken by the MRI apparatus 1 and an image of a surgical site taken by a microscope onto a safety screen 40 described later. Reference numeral 39 denotes a reflecting mirror that reflects the optical image emitted by the projector 36 and changes the optical path in the direction of the safety partition 40. Reference numeral 40 denotes a safety screen. When the patient 7 is undergoing surgery as shown in FIG. 2, the magnetic surgical tool is attracted by the static magnetic field of the MRI apparatus from the side on which the patient 7 is placed, and the MRI This is to prevent jumping into the gantry of the device. Reference numeral 41 denotes a support for supporting the safety wall 40.

次に図3を用い、MRI装置31によって撮影されたMR画像や顕微鏡によって撮影された手術部位の映像を安全壁40に映し出すためのプロジェクタ36の構造を説明する。図4に示すように、プロジェクタ36にはシールド37が周りを囲むように設けられていて、またプロジェクタ7が発する光学像が進む方向は回りに導波管38が設けられていて、これらにより、プロジェクタ36によって発生するノイズによってMRI装置1の撮像に悪影響を与えたり、MRI装置1が発生する磁場によってプロジェクタ7に悪影響を与えることを防ぐことができる。   Next, the structure of the projector 36 for projecting the MR image taken by the MRI apparatus 31 and the image of the surgical site taken by the microscope on the safety wall 40 will be described with reference to FIG. As shown in FIG. 4, the projector 36 is provided with a shield 37 so as to surround it, and a waveguide 38 is provided around the direction in which the optical image emitted by the projector 7 travels. It is possible to prevent the noise generated by the projector 36 from adversely affecting the imaging of the MRI apparatus 1 and the magnetic field generated by the MRI apparatus 1 from adversely affecting the projector 7.

上記図2に示した実施例1の状態では患者7の手術を行っている際に、MRI装置の漏洩磁場により磁性体の手術具等が吸引された場合にも、安全衝立40が防護壁となって手術具等がガントリの中へ飛び込まないので、より安全性を高めたMRI装置あるいはMRI装置を備えた手術室を提供することができる。また、安全衝立40には、プロジェクタ36、反射鏡39を用いてMRI装置1によって撮影されたMR画像や顕微鏡によって撮影された手術部位の映像を映し出すことができるので、術者は手術をしながら、手術の役に立つ患者の手術部位に関する情報を適宜得ることができ、より効率的な手術を行うことができる。なお、安全衝立40へ投影される画像は、MR画像と顕微鏡画像を択一的にそれぞれの装置からプロジェクタ36へ供給することにより、更には両方の装置から画像を同時にプロジェクタ36へ供給することにより、MR画像と顕微鏡画像とを択一的に、又は同時に表示することができる。また、実施例1において安全衝立40の材質としては、アクリル板を採用することができ、より望ましくは半透明のアクリル板が好適と考えられる。   In the state of Example 1 shown in FIG. 2 above, even when the patient 7 is performing surgery, even if a magnetic surgical tool or the like is attracted by the leakage magnetic field of the MRI apparatus, the safety screen 40 is protected from the protective wall. Thus, since the surgical tool or the like does not jump into the gantry, it is possible to provide an MRI apparatus or an operating room equipped with the MRI apparatus with higher safety. In addition, the safety screen 40 can project the MR image taken by the MRI apparatus 1 using the projector 36 and the reflecting mirror 39 and the image of the surgical site taken by the microscope, so that the operator can perform the operation. Information regarding the surgical site of a patient useful for surgery can be obtained as appropriate, and more efficient surgery can be performed. The images projected on the safety screen 40 can be obtained by alternatively supplying MR images and microscope images from the respective devices to the projector 36, and further supplying images from both devices to the projector 36 at the same time. MR images and microscope images can be displayed alternatively or simultaneously. In Example 1, an acrylic plate can be used as the material of the safety partition 40, and a translucent acrylic plate is more preferable.

次に図4を用い、本発明の第2の実施例について説明する。図4では、患者がMRI装置のガントリ内へ搬入されてようとしている様子を示す。この実施例では安全衝立40は支持具41によって上下方向にスライド可能となっていて、患者7のMR画像を得る際には先ず、安全壁40を下側にスライドさせて、患者3を搬入するための搬入路を確保できるようにする。そして患者7をガントリの中央に搬入してMR画像を得る。   Next, a second embodiment of the present invention will be described with reference to FIG. FIG. 4 shows a state where the patient is about to be carried into the gantry of the MRI apparatus. In this embodiment, the safety partition 40 is slidable in the vertical direction by the support 41, and when obtaining an MR image of the patient 7, first, the safety wall 40 is slid downward and the patient 3 is carried in. Be able to secure a carry-in route. Then, the patient 7 is carried into the center of the gantry and an MR image is obtained.

本実施例によれば、安全壁40を支持具41により簡易に下側に移動できるので、手術を行っている途中で患者7をガントリ内へ移動させ、手術の途中経過をMRI装置31で観察することができる。   According to the present embodiment, since the safety wall 40 can be easily moved downward by the support tool 41, the patient 7 is moved into the gantry during the operation, and the progress of the operation is observed with the MRI apparatus 31. can do.

次に図5を用い、本発明の第3の実施例について説明する。図5では、安全衝立40の取り付け方が実施例1あるいは実施例2と異なっている。実施例3によれば、上下に対向配置された一対の永久磁石のそれぞれの端にレール42a、42bが設けられ、このレール42a，42b上に安全衝立40が設置され、安全衝立40を滑らせて移動させるが可能となっている。安全衝立40の位置は、患者7をMRI装置31から離れた位置で手術をする場合と、MRI装置31のガントリ内でMR画像を得る場合とに対応させて、好適に異ならせることができる。より具体的に図5では、患者7をMRI装置31から離れた位置で手術をする場合の安全衝立40の配置例が示されている。一方、図に向かって左側へ安全衝立40を滑らせると、ガントリ内に患者7を挿入することができ、挿入した後、患者7のMR画像を撮影することができるようになっている。本実施例の場合特に、安全衝立40の材質を半透明のアクリル板等で構成すれば、安全壁40を図5で左側に移動させて患者7のMR画像を撮影する場合にも、患者7が撮影の最中に外を見渡せることが可能であり、患者7にとっての閉塞感が低減でき、また操作者にとっても患者７の状態が見やすくなるので安全性が向上するという利点がある。   Next, a third embodiment of the present invention will be described with reference to FIG. In FIG. 5, the method of attaching the safety partition 40 is different from that in the first or second embodiment. According to the third embodiment, rails 42a and 42b are provided at the ends of a pair of permanent magnets arranged opposite to each other in the vertical direction, and safety partitions 40 are installed on the rails 42a and 42b, and the safety partitions 40 are slid. It is possible to move. The position of the safety screen 40 can be suitably varied depending on when the patient 7 is operated at a position away from the MRI apparatus 31 and when the MR image is obtained in the gantry of the MRI apparatus 31. More specifically, FIG. 5 shows an arrangement example of the safety screen 40 when the patient 7 is operated at a position away from the MRI apparatus 31. On the other hand, when the safety screen 40 is slid to the left side as viewed in the figure, the patient 7 can be inserted into the gantry, and after insertion, an MR image of the patient 7 can be taken. Particularly in the case of the present embodiment, if the material of the safety screen 40 is made of a translucent acrylic plate or the like, the patient 7 can be used even when the MR image of the patient 7 is taken by moving the safety wall 40 to the left in FIG. However, it is possible to look out during the imaging, so that the feeling of blockage for the patient 7 can be reduced, and the operator can easily see the state of the patient 7, so that the safety is improved.

一般的なMRI装置のシステム構成。General MRI system configuration. 患者がMRI装置から離れた位置において手術を受けている際の様子を示す図。The figure which shows a mode when a patient is undergoing surgery in the position away from the MRI apparatus. 患者がMRI装置のガントリ内へ搬入されている様子を示す図。The figure which shows a mode that the patient is carried into the gantry of an MRI apparatus. プロジェクタ7の構造の拡大図を示す図。FIG. 6 is an enlarged view of the structure of the projector 7. ガントリの端に設けられたレール13上に安全壁11を設置した様子を示す図。The figure which shows a mode that the safety wall 11 was installed on the rail 13 provided in the edge of the gantry.

符号の説明Explanation of symbols

７ プロジェクタ
１１ 安全壁 7 Projector 11 Safety wall

Claims (2)

手術室内に手術用具等と共に設けられ、静磁場を発生する静磁場発生手段を備え、患者に行う手術と共に磁気共鳴現象を利用して前記患者の磁気共鳴画像を得る磁気共鳴イメージング装置において、前記手術室内に置かれている手術具等の磁性体であるものが前記静磁場発生手段の開口から開口内へ飛び込むことを防ぐための安全衝立を移動可能に設けたことを特徴とする磁気共鳴イメージング装置。   In a magnetic resonance imaging apparatus provided with a surgical tool or the like in an operating room, comprising a static magnetic field generating means for generating a static magnetic field, and obtaining a magnetic resonance image of the patient using a magnetic resonance phenomenon together with an operation performed on the patient. A magnetic resonance imaging apparatus movably provided with a safety screen for preventing a magnetic material such as a surgical tool placed indoors from jumping into the opening from the opening of the static magnetic field generating means . 前記手術室内には、前記患者に手術を行っている最中に前記患者の手術部位を撮影する手術用顕微鏡を更に備え、前記安全衝立には、前記磁気共鳴画像と前記手術用顕微鏡による画像とを択一的に又は同時に表示する手段を備えたことを特徴とする請求項１記載の磁気共鳴イメージング装置。   The operating room further includes a surgical microscope for photographing the surgical site of the patient during the operation of the patient, and the safety screen includes the magnetic resonance image and the image obtained by the surgical microscope. The magnetic resonance imaging apparatus according to claim 1, further comprising: a unit for displaying the two at the same time or simultaneously.
JP2004325990A 2004-11-10 2004-11-10 Magnetic resonance imaging apparatus Pending JP2006136359A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2004325990A JP2006136359A (en) 2004-11-10 2004-11-10 Magnetic resonance imaging apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004325990A JP2006136359A (en) 2004-11-10 2004-11-10 Magnetic resonance imaging apparatus

Publications (1)

Publication Number Publication Date
JP2006136359A true JP2006136359A (en) 2006-06-01

Family

ID=36617540

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2004325990A Pending JP2006136359A (en) 2004-11-10 2004-11-10 Magnetic resonance imaging apparatus

Country Status (1)

Country Link
JP (1) JP2006136359A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008042119A (en) * 2006-08-10 2008-02-21 National Institute For Materials Science Ferromagnetic field magnet device
CN101044980B (en) * 2006-03-31 2011-07-06 株式会社东芝 Device for preventing magnetic field suction
JP2013000396A (en) * 2011-06-17 2013-01-07 Yoshida Dental Mfg Co Ltd Packing material for open-type magnetic resonance imaging apparatus
US20150085261A1 (en) * 2013-09-25 2015-03-26 Samsung Electronics Co., Ltd. Magnetic resonance imaging apparatus
JP2021041131A (en) * 2019-09-13 2021-03-18 株式会社総合企画 Inspection environment improvement device in magnetic resonance imaging apparatus

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101044980B (en) * 2006-03-31 2011-07-06 株式会社东芝 Device for preventing magnetic field suction
JP2008042119A (en) * 2006-08-10 2008-02-21 National Institute For Materials Science Ferromagnetic field magnet device
JP2013000396A (en) * 2011-06-17 2013-01-07 Yoshida Dental Mfg Co Ltd Packing material for open-type magnetic resonance imaging apparatus
US20150085261A1 (en) * 2013-09-25 2015-03-26 Samsung Electronics Co., Ltd. Magnetic resonance imaging apparatus
KR20150034060A (en) * 2013-09-25 2015-04-02 삼성전자주식회사 Magnetic resonance imaging apparatus
WO2015046862A1 (en) * 2013-09-25 2015-04-02 Samsung Electronics Co., Ltd. Magnetic resonance imaging apparatus
KR101666522B1 (en) 2013-09-25 2016-10-24 삼성전자 주식회사 Magnetic resonance imaging apparatus
US9541613B2 (en) 2013-09-25 2017-01-10 Samsung Electronics Co., Ltd. Magnetic resonance imaging apparatus
US10042012B2 (en) 2013-09-25 2018-08-07 Samsung Electronics Co., Ltd. Magnetic resonance imaging apparatus
JP2021041131A (en) * 2019-09-13 2021-03-18 株式会社総合企画 Inspection environment improvement device in magnetic resonance imaging apparatus

Similar Documents

Publication Publication Date Title
Baert et al. Interventional magnetic resonance imaging
Hadani et al. Novel, compact, intraoperative magnetic resonance imaging-guided system for conventional neurosurgical operating rooms
Penzkofer et al. Transperineal in-bore 3-T MR imaging–guided prostate biopsy: a prospective clinical observational study
JP2017060782A (en) System and method for image guidance during medical procedures
JP2009039519A (en) Magnetic resonance imaging apparatus, setting supporting apparatus and setting supporting method
JP2018183525A (en) Medical image diagnostic apparatus and magnetic resonance imaging apparatus
Truwit et al. Intraoperative magnetic resonance imaging-guided neurosurgery at 3-T
Hushek et al. MR systems for MRI‐guided interventions
JP7416601B2 (en) Magnetic resonance imaging system and position display method
JPH0453533A (en) Magnetic resonance monitoring medical treatment apparatus
JP2006136359A (en) Magnetic resonance imaging apparatus
RU2592015C2 (en) Device and method for acting on and/or detecting magnetic particles
JP4330672B2 (en) X-ray diagnostic equipment
JP2012115299A (en) Magnetic resonance imaging apparatus
US7999547B2 (en) System for magnetic resonance imaging assisted surgery
Zhang et al. Diffraction-enhanced radiography of various mouse organs
JP2004008398A (en) Medical image diagnostic apparatus
JP2000232969A (en) Operation table device linked with mri device
Nabavi et al. Intraoperative MRI with 1.5 Tesla in neurosurgery
JP2004016659A (en) Electromagnetic shield body corresponding to operation room
Lang et al. First ground-based, high-field, cryogen-free, mobile intraoperative magnetic resonance imaging system
JP4031964B2 (en) Receiver coil for magnetic resonance imaging apparatus and apparatus using the same
JP2003088508A (en) Operation support system
JP2003325471A (en) Magnetic resonance imaging apparatus
JP4074513B2 (en) Magnetic resonance imaging system