WO2004066836A1 - 脳磁界計測装置とその使用方法 - Google Patents
脳磁界計測装置とその使用方法 Download PDFInfo
- Publication number
- WO2004066836A1 WO2004066836A1 PCT/JP2003/000836 JP0300836W WO2004066836A1 WO 2004066836 A1 WO2004066836 A1 WO 2004066836A1 JP 0300836 W JP0300836 W JP 0300836W WO 2004066836 A1 WO2004066836 A1 WO 2004066836A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- heat insulating
- enclosure
- vacuum heat
- cryogenic
- insulating structure
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
- A61B5/242—Detecting biomagnetic fields, e.g. magnetic fields produced by bioelectric currents
- A61B5/245—Detecting biomagnetic fields, e.g. magnetic fields produced by bioelectric currents specially adapted for magnetoencephalographic [MEG] signals
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
- G01R33/035—Measuring direction or magnitude of magnetic fields or magnetic flux using superconductive devices
- G01R33/0354—SQUIDS
- G01R33/0358—SQUIDS coupling the flux to the SQUID
Definitions
- the present invention relates to a brain magnetic field measuring apparatus for measuring a weak magnetic field of about one hundred millionth of a terrestrial magnetic field generated by a nerve current flowing to a nerve of the brain when the brain works, and a method of using the same.
- a SQUID Superconducting Quantum Interference Device
- a SQUID Superconducting Quantum Interference Device
- the inventor has developed and is implementing a magnetoencephalography measuring apparatus in which SQUID is immersed in a liquid hemisphere and used as a magnetoencephalography sensor at extremely low temperatures.
- the conventional brain magnetic field measuring apparatus 1 includes a hollow cylindrical vacuum heat insulating structure 11, a circulating cooling device 12, a cryogenic vessel 13, and a top enclosure 14.
- the vacuum heat insulating structure 11 contains a first enclosure 11 1 made of a high-temperature superconductor and a second enclosure 11 12 made of a high-permeability magnetic material in a double wall, and has a hollow cylindrical shape.
- the structure is as follows.
- the circulating cooling device 12 circulates the cooling medium in the double-walled space of the vacuum heat insulating structure 11.
- the cryogenic vessel 13 is disposed in the cylindrical vacuum heat insulating structure 11 and is fixed to the vacuum heat insulating structure 11.
- the top enclosure 14 is an enclosure (hollow inside) with a double structure of a good metal conductor (electromagnetic wave shielding) and a magnetic material (magnetic field shielding), and is fitted to the section of the vacuum heat insulating structure 11. I have.
- a head storage area 13 1 surrounding the subject's head is defined below the cryogenic container 13, and a SQUID is formed inside the cryogenic container 13 around the head storage area 1 3 1.
- a magnetic sensor 15 is arranged on the support member 20. This cryogenic vessel 13 has cryogenic temperature Filled with media.
- the vacuum heat insulating structure 11 is placed on the floor, and a non-magnetic chair 17 is placed in the lower opening.
- the reason why the top enclosure 14 made of a magnetic material is fitted to the top of the vacuum heat insulating structure 11 is to prevent electromagnetic waves and geomagnetism from entering from the top.
- FIGS. 7 and 8 show the vacuum heat insulating structure 11 and the cryogenic vessel 13 in an enlarged manner.
- High temperature superconductors bismuth, strontium, calcium, copper oxidation
- the first enclosure 1 of BSCCO When the first enclosure 1 of BSCCO) is lowered to a temperature close to the temperature of liquid nitrogen (1 ⁇ 3 K or less), lines of magnetic force cannot enter the space inside this high-temperature superconductor from outside .
- the magnetic flux of the earth's magnetic field has already entered the internal space of the vacuum heat-insulating structure 11, and the magnetic flux is reduced to the first enclosure. Pinned at 1 1 1 and trapped. In this state, the cryogenic vessel 13 moves vertically (Fig. 7) or horizontally (Fig.
- An object of the present invention is to provide a low-sound, high-sensitivity brain magnetic field measurement apparatus. Further, another object of the present invention is to provide a method for using this brain magnetic field measuring apparatus. Disclosure of the invention
- the vibration isolation support includes vibration absorbing means for absorbing vibration from the floor and a vibration isolation mechanism for detecting vibration from the floor and canceling the vibration by feedback control. I have.
- the magnetic sensor is fixed to the first enclosure of the high-temperature superconductor so as not to move relative to each other, as shown in FIGS. 7 and 8.
- FIGS. 7 and 8 As described above, it is possible to avoid a situation in which the sensor crosses the trapped static magnetic field and picks up a change in the static magnetic field to generate noise.
- the portion represented by the dashed line in FIG. 7 exaggerates the state in which the cryogenic vessel has been moved by vibration in the vertical direction.
- the Cryogenic container and vacuum thermal insulator structure (high-temperature superconductor
- the positional relationship between the sensor and the trapped static magnetic field remains unchanged before and after the movement (the dashed line in the figure).
- the positional relationship between the magnetic flux and the sensor (after movement) and the positional relationship between the dashed magnetic flux and the sensor (before movement) remain unchanged), and no change appears in the magnetic flux crossing the sensor.
- the first pillow structure that fills the gap between the ⁇ wall of the vacuum heat insulating structure and the outer wall of the cryogenic container is used as fixing means for that purpose.
- the gap between the superconductor cap and the inner wall of the cryogenic container Use a second pillow structure to fill in the pillow.
- This second pillow structure is arranged near the lowermost end of the cryogenic container. This is because the lowest end has the largest deflection due to vibration.
- the magnetic sensor and the vacuum heat insulating structure are used. With the same movement (vibration) as the body, the trapped static magnetism in the cylindrical space remains stationary with respect to the magnetic sensor, and no noise is generated in the magnetic sensor.
- the present invention also provides a method for operating such a brain magnetic field measuring apparatus, in which the lower opening of a hollow thermally insulated vacuum structure is closed with a magnetic material (so that geomagnetism is captured in a hollow space).
- a magnetic material so that geomagnetism is captured in a hollow space.
- the liquid is filled with liquid helium, or cooled to cryogenic temperature by indirect cooling by heat conduction, and the brain magnetic field is measured by the SQID magnetic sensor arranged in the cryogenic container.
- FIG. 1 is a schematic view of an embodiment of the brain magnetometer according to the present invention.
- FIG. 2 is a plan view of an embodiment of the brain magnetic measurement apparatus of the present invention.
- FIG. 3 is a graph showing a noise signal of the embodiment of the brain magnetometer according to the present invention.
- FIG. 4 shows a brain magnetic field measured by the brain magnetic measurement apparatus of the present invention.
- FIG. 5 is a schematic view of an embodiment of a conventional brain magnetic measurement apparatus.
- FIG. 6 is a rough diagram showing a noise signal of a conventional brain magnetometer.
- Figure 7 shows the positional relationship between the magnetic sensor and the high-temperature superconductor shield before and after longitudinal vibration with respect to the magnetic field.
- Figure 8 shows the positional relationship between the magnetic sensor and the high-temperature superconductor shield with respect to the magnetic field before and after the lateral vibration.
- the magnetoencephalograph 1 includes a first enclosure 11 1 made of a high-temperature superconductor and a second enclosure 1 12 made of a high-permeability magnetic material.
- a hollow cylindrical vacuum heat insulating structure 11 housed in a heavy wall, a circulating cooling device 12 for circulating a cooling medium in the double-walled space of the vacuum heat insulating structure 11 1, and a cylinder. It has a cryogenic vessel 13 fixed inside the vacuum heat insulating structure 11 and a top enclosure 14 fitted to the top of the vacuum heat insulating structure 11.
- the head storage area 13 1 surrounding the subject's head is limited below the cryogenic container 13, and the SQUID magnet is located inside the cryogenic container 13 around the head storage area 1 3 1 Place the sensor 15 on its own, and place the superconductor cap 13 2 above the magnetic sensor 15 inside the cryogenic container 13, and fill the cryogenic container 13 with the cryogenic medium. I have.
- This superconductor cap 132 is made of lead, MgB 2 , and BSCCO.
- the fixing means for fixing the magnetic sensor 15 to the first enclosure 11 of the high-temperature superconductor so as not to move relative to the first enclosure 11 comprises the inner wall of the vacuum heat insulating structure 11 and the extremely low temperature.
- the second pillow structure 21 is arranged near the lowermost end of the cryogenic vessel 13.
- a pillow 22 fixed near the lowermost end of the cryogenic vessel 13 is placed on two rails (not shown) arranged along the inner wall of the vacuum heat insulating structure 11.
- the cryogenic vessel 13 can be pulled out toward the top of the vacuum heat insulating structure 11 by slidably mounting it.
- the vacuum heat insulating structure 11 is supported on the floor by a vibration isolation support 16.
- the anti-vibration supports 16 are arranged at four places on the floor with respect to the support legs 16 4, and the vibration absorbing means 16 1 that absorbs vibration from the floor and the vibration
- An active anti-vibration mechanism 162 that detects vibration and cancels the vibration by feedback control is provided. Vibration damping rubber or air suspension is used as the vibration absorbing means.
- the support 16 also includes an up-down mechanism 163. The up-down mechanism 163 can be removed when the brain magnetic field measuring device (weight: about 1 toshi) can be carried.
- the top enclosure 14 is fitted to the top of the vacuum heat insulating structure 11.
- the superconductor cap 13 is arranged to shield the SQID magnetic sensor 15 from geomagnetism that has invaded from the top.
- the superconductor supporting member 20 of the sensor has a helmet shape surrounding the subject's head, but this shape is convenient for shielding a magnetic component perpendicular to the cylindrical axis.
- the first pillow structure 2 2 that fills the gap between the inner wall of the vacuum heat insulating structure 1 1 and the outer wall of the cryogenic vessel 1 3, the superconductor cap 1 3 2, and the gap between the inner wall of the cryogenic vessel 1 3
- the first SQUID magnetic sensor 15 and the vacuum heat insulating structure 11 Avoid relative movement between the enclosure 1 1 and 1 1.
- the SQUID magnetic sensor 15 and the cylindrical vacuum thermal insulation structure 11 move the same (
- the static magnetism in the cylindrical space causes a change with respect to the SQUID magnetic sensor 15 Therefore, the magnetic sensor 15 does not generate noise.
- Such a brain magnetic measurement device operates as follows. First, the lower opening of the hollow cylindrical insulation 11 is closed with a magnetic material to prevent intrusion of geomagnetism. Next, the temperature of the first enclosure 1 1 1 1 1 is reduced to near the liquid nitrogen temperature by the circulating cooling device 12 (superconductor critical temperature 100 K or less) to block the invasion of magnetic flux from the outside. This avoids the situation where the SQUID magnetic sensor 15 catches magnetic flux and becomes inoperable. Fill a cryogenic container 13 with a liquid helm and measure the cerebral magnetic field with a SQID magnetic sensor. Instead of filling with liquid helium, it may be cooled to extremely low temperature by indirect cooling by heat conduction.
- FIG. 3 shows the noise signals from the 15 magnetic sensors of the brain magnetometer manufactured according to the present invention along the time axis. Compared to the graph in Fig. 6, it can be clearly seen that the noise has almost disappeared.
- Figure 4 shows the magnetic field pattern of brain magnetism measured by 128 magnetic sensors 15 (magnetic field intensity is indicated by shading). This makes it possible to visually check the working state of the brain, which changes every moment.
Landscapes
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Medical Informatics (AREA)
- Surgery (AREA)
- Biophysics (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Molecular Biology (AREA)
- General Physics & Mathematics (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
- Measuring Magnetic Variables (AREA)
- Containers, Films, And Cooling For Superconductive Devices (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CNB038258862A CN100342822C (zh) | 2003-01-29 | 2003-01-29 | 脑磁场检测装置及其使用方法 |
EP03815579.2A EP1591062B1 (en) | 2003-01-29 | 2003-01-29 | Magnetoencephalography device |
JP2004567519A JP4243691B2 (ja) | 2003-01-29 | 2003-01-29 | 脳磁界計測装置とその使用方法 |
PCT/JP2003/000836 WO2004066836A1 (ja) | 2003-01-29 | 2003-01-29 | 脳磁界計測装置とその使用方法 |
US11/192,514 US7756564B2 (en) | 2003-01-29 | 2005-07-29 | Apparatus for measuring the neuro-magnetic field from a human brain and method for operating the same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2003/000836 WO2004066836A1 (ja) | 2003-01-29 | 2003-01-29 | 脳磁界計測装置とその使用方法 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/192,514 Continuation US7756564B2 (en) | 2003-01-29 | 2005-07-29 | Apparatus for measuring the neuro-magnetic field from a human brain and method for operating the same |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004066836A1 true WO2004066836A1 (ja) | 2004-08-12 |
Family
ID=32800804
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2003/000836 WO2004066836A1 (ja) | 2003-01-29 | 2003-01-29 | 脳磁界計測装置とその使用方法 |
Country Status (5)
Country | Link |
---|---|
US (1) | US7756564B2 (ja) |
EP (1) | EP1591062B1 (ja) |
JP (1) | JP4243691B2 (ja) |
CN (1) | CN100342822C (ja) |
WO (1) | WO2004066836A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006067828A1 (ja) * | 2004-12-20 | 2006-06-29 | National Institute Of Information And Communications Technology | 超伝導磁気シールド脳磁界計測装置の計測構造体 |
CN100381096C (zh) * | 2005-07-14 | 2008-04-16 | 中国人民解放军第四军医大学 | 非接触磁感应脑部电导率分布变化的监测方法 |
JP2010046335A (ja) * | 2008-08-22 | 2010-03-04 | National Institute Of Information & Communication Technology | 脳磁界計測装置の位置合わせ装置 |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7507916B2 (en) * | 2004-04-19 | 2009-03-24 | Stephen Burns Kessler | Spheric alignment mechanism |
US8383959B2 (en) * | 2005-04-18 | 2013-02-26 | Stephen Burns Kessler | Metamaterial spheric alignment mechanism |
US20070239059A1 (en) * | 2006-03-21 | 2007-10-11 | Mciver Christopher R | Neurophysiology testing system |
CA2793209A1 (en) * | 2010-03-16 | 2011-09-22 | Scientific Nanomedicine, Inc. | Nonsurgical determination of organ transplant condition |
US8483795B2 (en) * | 2011-03-03 | 2013-07-09 | Moment Technologies, Llc | Primary source mirror for biomagnetometry |
US9026194B2 (en) | 2011-03-03 | 2015-05-05 | Moment Technologies, Llc | Current diverter for magnetic stimulation of biological systems |
KR101507382B1 (ko) * | 2013-09-11 | 2015-04-01 | 한국표준과학연구원 | 뇌자도 측정 장치 및 뇌자도 측정 방법 |
CA2963346C (en) * | 2014-10-09 | 2023-09-19 | Elekta Ab (Publ). | An apparatus and a method for helium collection and reliquefaction in a magnetoencephalography measurement device |
GB201513191D0 (en) * | 2015-07-27 | 2015-09-09 | Royal Holloway & Bedford New College | Neuroimaging headset |
US9791536B1 (en) | 2017-04-28 | 2017-10-17 | QuSpin, Inc. | Mutually calibrated magnetic imaging array |
US11723579B2 (en) | 2017-09-19 | 2023-08-15 | Neuroenhancement Lab, LLC | Method and apparatus for neuroenhancement |
US11717686B2 (en) | 2017-12-04 | 2023-08-08 | Neuroenhancement Lab, LLC | Method and apparatus for neuroenhancement to facilitate learning and performance |
US11478603B2 (en) | 2017-12-31 | 2022-10-25 | Neuroenhancement Lab, LLC | Method and apparatus for neuroenhancement to enhance emotional response |
CN108181595A (zh) * | 2018-02-09 | 2018-06-19 | 中国科学院上海微系统与信息技术研究所 | 环境磁场测试装置、测试方法及计算机可读存储介质 |
US11364361B2 (en) | 2018-04-20 | 2022-06-21 | Neuroenhancement Lab, LLC | System and method for inducing sleep by transplanting mental states |
CN113382683A (zh) | 2018-09-14 | 2021-09-10 | 纽罗因恒思蒙特实验有限责任公司 | 改善睡眠的系统和方法 |
US11786694B2 (en) | 2019-05-24 | 2023-10-17 | NeuroLight, Inc. | Device, method, and app for facilitating sleep |
KR102356508B1 (ko) * | 2020-06-11 | 2022-01-27 | 한국표준과학연구원 | 다모드 자세변환 이중 헬멧 뇌자도 장치 |
CN114847953B (zh) * | 2022-07-06 | 2022-09-09 | 北京昆迈医疗科技有限公司 | 一种脑磁扫描设备 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05212008A (ja) * | 1992-02-03 | 1993-08-24 | Osaka Gas Co Ltd | 磁界測定装置 |
JPH07294613A (ja) * | 1994-04-21 | 1995-11-10 | Kajima Corp | 防振型磁気シールド装置 |
JPH10313135A (ja) * | 1997-05-09 | 1998-11-24 | Rikagaku Kenkyusho | 高温超伝導体磁気シ−ルド装置 |
JP2001178695A (ja) * | 1990-05-31 | 2001-07-03 | Osaka Gas Co Ltd | 生体磁界の測定装置 |
JP2002372098A (ja) * | 2001-06-18 | 2002-12-26 | Olympus Optical Co Ltd | 除振装置および制御方法 |
JP2003010142A (ja) * | 2001-07-02 | 2003-01-14 | Obayashi Seisakusho:Kk | 脳磁波計測装置に用いる患者運搬装置 |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5081071A (en) * | 1988-04-05 | 1992-01-14 | Biomagnetic Technologies, Inc. | Magnetically shielded enclosure |
US5187327A (en) * | 1989-09-29 | 1993-02-16 | Mitsui Kinzoku Kogyo Kabushiki Kaisha | Superconducting magnetic shield |
CA2069637A1 (en) * | 1990-09-28 | 1992-03-29 | Hironori Matsuba | Magnetically shielding structure |
US5406847A (en) * | 1991-11-01 | 1995-04-18 | Sierra Monolithics, Inc. | Superconducting gyroscope |
JP3130618B2 (ja) | 1991-12-09 | 2001-01-31 | 三井金属鉱業株式会社 | 超電導磁気シールド容器 |
US5617856A (en) * | 1993-09-24 | 1997-04-08 | Osaka Gas Company Limited | Biological information-measuring apparatus |
JPH1031315A (ja) * | 1996-07-16 | 1998-02-03 | Nec Corp | レジストパターンの現像装置 |
JP3557984B2 (ja) * | 2000-02-03 | 2004-08-25 | 株式会社日立製作所 | デュワ及びそれを用いた生体磁場計測装置 |
JP3454246B2 (ja) * | 2000-10-30 | 2003-10-06 | 株式会社日立製作所 | 磁場計測装置 |
US20040049108A1 (en) * | 2000-11-03 | 2004-03-11 | Ardenkjaer-Larsen Jan Henrik | Methods and devices for polarised nmr samples |
JP2002315729A (ja) | 2001-04-23 | 2002-10-29 | Obayashi Seisakusho:Kk | 脳磁波計測装置に用いる患者運搬装置 |
US7130675B2 (en) * | 2002-06-28 | 2006-10-31 | Tristan Technologies, Inc. | High-resolution magnetoencephalography system and method |
US7197352B2 (en) * | 2002-08-26 | 2007-03-27 | Tristan Technologies, Inc. | High-resolution magnetoencephalography system, components and method |
US7038450B2 (en) * | 2002-10-16 | 2006-05-02 | Trustees Of Princeton University | High sensitivity atomic magnetometer and methods for using same |
JP4110950B2 (ja) * | 2002-11-29 | 2008-07-02 | 株式会社日立製作所 | 磁気シールド装置及び生体磁場計測装置 |
JP4595102B2 (ja) | 2004-12-20 | 2010-12-08 | 独立行政法人情報通信研究機構 | 超伝導磁気シールド脳磁界計測装置の計測構造体 |
-
2003
- 2003-01-29 JP JP2004567519A patent/JP4243691B2/ja not_active Expired - Lifetime
- 2003-01-29 EP EP03815579.2A patent/EP1591062B1/en not_active Expired - Lifetime
- 2003-01-29 WO PCT/JP2003/000836 patent/WO2004066836A1/ja active IP Right Grant
- 2003-01-29 CN CNB038258862A patent/CN100342822C/zh not_active Expired - Fee Related
-
2005
- 2005-07-29 US US11/192,514 patent/US7756564B2/en not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001178695A (ja) * | 1990-05-31 | 2001-07-03 | Osaka Gas Co Ltd | 生体磁界の測定装置 |
JPH05212008A (ja) * | 1992-02-03 | 1993-08-24 | Osaka Gas Co Ltd | 磁界測定装置 |
JPH07294613A (ja) * | 1994-04-21 | 1995-11-10 | Kajima Corp | 防振型磁気シールド装置 |
JPH10313135A (ja) * | 1997-05-09 | 1998-11-24 | Rikagaku Kenkyusho | 高温超伝導体磁気シ−ルド装置 |
JP2002372098A (ja) * | 2001-06-18 | 2002-12-26 | Olympus Optical Co Ltd | 除振装置および制御方法 |
JP2003010142A (ja) * | 2001-07-02 | 2003-01-14 | Obayashi Seisakusho:Kk | 脳磁波計測装置に用いる患者運搬装置 |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006067828A1 (ja) * | 2004-12-20 | 2006-06-29 | National Institute Of Information And Communications Technology | 超伝導磁気シールド脳磁界計測装置の計測構造体 |
JPWO2006067828A1 (ja) * | 2004-12-20 | 2008-06-12 | 独立行政法人情報通信研究機構 | 超伝導磁気シールド脳磁界計測装置の計測構造体 |
JP4595102B2 (ja) * | 2004-12-20 | 2010-12-08 | 独立行政法人情報通信研究機構 | 超伝導磁気シールド脳磁界計測装置の計測構造体 |
US7881760B2 (en) | 2004-12-20 | 2011-02-01 | National Institute Of Information And Communications Technology | Measuring structure for magneto encephalographic equipment with a superconducting magnetic-shield |
CN100381096C (zh) * | 2005-07-14 | 2008-04-16 | 中国人民解放军第四军医大学 | 非接触磁感应脑部电导率分布变化的监测方法 |
JP2010046335A (ja) * | 2008-08-22 | 2010-03-04 | National Institute Of Information & Communication Technology | 脳磁界計測装置の位置合わせ装置 |
Also Published As
Publication number | Publication date |
---|---|
US7756564B2 (en) | 2010-07-13 |
JPWO2004066836A1 (ja) | 2006-05-18 |
EP1591062A1 (en) | 2005-11-02 |
US20050272996A1 (en) | 2005-12-08 |
EP1591062A4 (en) | 2013-01-16 |
JP4243691B2 (ja) | 2009-03-25 |
CN100342822C (zh) | 2007-10-17 |
EP1591062B1 (en) | 2014-04-23 |
CN1735376A (zh) | 2006-02-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2004066836A1 (ja) | 脳磁界計測装置とその使用方法 | |
KR101632280B1 (ko) | 냉각기 냉각형 스퀴드 측정 장치 | |
US7881760B2 (en) | Measuring structure for magneto encephalographic equipment with a superconducting magnetic-shield | |
US5990678A (en) | Non-destructive testing equipment having squid type magnetic sensor | |
JP2008091912A (ja) | 超伝導マグネット向けの高温超伝導電流リード | |
JP2009000517A (ja) | セラミック巻型を持つヒートパイプ冷却型超伝導磁石 | |
JP5107147B2 (ja) | 生体磁気計測装置及び脳磁計 | |
Björnsson et al. | Scanning superconducting quantum interference device microscope in a dilution refrigerator | |
JP4550375B2 (ja) | ビーム電流計 | |
FI95307C (fi) | Magneettisesti suojatun huoneen kannatuspilarijärjestelmä | |
KR100671246B1 (ko) | 뇌자계 계측장치와 그 사용방법 | |
JP2003339659A (ja) | 超電導磁気シールド装置 | |
Ackermann et al. | Multichannel SQUID system with integrated magnetic shielding for magnetocardiography of mice | |
KR101632293B1 (ko) | 냉각기 냉각형 초전도양자간섭소자 시스템 및 냉각기 냉각형 초전도양자간섭소자 시스템의 동작 방법 | |
JP3360091B2 (ja) | 超電導加速度計 | |
JP5253926B2 (ja) | 脳磁計 | |
JPH07321382A (ja) | Squid格納容器およびsquid冷却方法 | |
JP2017121355A (ja) | 脳磁計装置 | |
JP4467020B2 (ja) | 磁気遮蔽装置 | |
JP2003179277A (ja) | 超電導量子干渉デバイス格納用極低温容器 | |
JPH05317280A (ja) | 脳磁界計測装置 | |
JP2005121455A (ja) | Nmr計測装置 | |
JPH04276594A (ja) | 超電導磁気シールド装置 | |
JPH0690916A (ja) | 脳磁界計測装置 | |
JPH03208309A (ja) | 超電導マグネット |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): CN JP KR US |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PT SE SI SK TR |
|
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2004567519 Country of ref document: JP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1020057013703 Country of ref document: KR Ref document number: 1020057013709 Country of ref document: KR |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2003815579 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 11192514 Country of ref document: US Ref document number: 20038258862 Country of ref document: CN |
|
WWW | Wipo information: withdrawn in national office |
Ref document number: 1020057013703 Country of ref document: KR |
|
WWP | Wipo information: published in national office |
Ref document number: 1020057013709 Country of ref document: KR |
|
WWP | Wipo information: published in national office |
Ref document number: 2003815579 Country of ref document: EP |
|
WWG | Wipo information: grant in national office |
Ref document number: 1020057013709 Country of ref document: KR |