JPS61154656A - Ｍｒｉトモグラフィ装置 - Google Patents
Ｍｒｉトモグラフィ装置Info
- Publication number
- JPS61154656A JPS61154656A JP60283181A JP28318185A JPS61154656A JP S61154656 A JPS61154656 A JP S61154656A JP 60283181 A JP60283181 A JP 60283181A JP 28318185 A JP28318185 A JP 28318185A JP S61154656 A JPS61154656 A JP S61154656A
- Authority
- JP
- Japan
- Prior art keywords
- frequency
- coil system
- frequency coil
- impedance
- tomography apparatus
- 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
- 238000003325 tomography Methods 0.000 title claims description 41
- 238000000034 method Methods 0.000 claims description 23
- 238000002847 impedance measurement Methods 0.000 claims description 17
- 238000005259 measurement Methods 0.000 claims description 17
- 238000007689 inspection Methods 0.000 claims description 3
- 239000003990 capacitor Substances 0.000 description 12
- 238000010586 diagram Methods 0.000 description 6
- 230000005284 excitation Effects 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 206010011224 Cough Diseases 0.000 description 2
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 230000001939 inductive effect Effects 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 230000000241 respiratory effect Effects 0.000 description 2
- 230000029058 respiratory gaseous exchange Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000036461 convulsion Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000009747 swallowing Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
- G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
- G01R33/32—Excitation or detection systems, e.g. using radio frequency signals
- G01R33/36—Electrical details, e.g. matching or coupling of the coil to the receiver
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/103—Measuring devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
- A61B5/11—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor or mobility of a limb
- A61B5/1126—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor or mobility of a limb using a particular sensing technique
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
- A61B5/7203—Signal processing specially adapted for physiological signals or for diagnostic purposes for noise prevention, reduction or removal
- A61B5/7207—Signal processing specially adapted for physiological signals or for diagnostic purposes for noise prevention, reduction or removal of noise induced by motion artifacts
- A61B5/721—Signal processing specially adapted for physiological signals or for diagnostic purposes for noise prevention, reduction or removal of noise induced by motion artifacts using a separate sensor to detect motion or using motion information derived from signals other than the physiological signal to be measured
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
- G01R33/44—Arrangements or instruments for measuring magnetic variables involving magnetic resonance using nuclear magnetic resonance [NMR]
- G01R33/48—NMR imaging systems
- G01R33/54—Signal processing systems, e.g. using pulse sequences ; Generation or control of pulse sequences; Operator console
- G01R33/56—Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution
- G01R33/565—Correction of image distortions, e.g. due to magnetic field inhomogeneities
- G01R33/56509—Correction of image distortions, e.g. due to magnetic field inhomogeneities due to motion, displacement or flow, e.g. gradient moment nulling
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
- G01R33/44—Arrangements or instruments for measuring magnetic variables involving magnetic resonance using nuclear magnetic resonance [NMR]
- G01R33/48—NMR imaging systems
- G01R33/54—Signal processing systems, e.g. using pulse sequences ; Generation or control of pulse sequences; Operator console
- G01R33/56—Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution
- G01R33/567—Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution gated by physiological signals, i.e. synchronization of acquired MR data with periodical motion of an object of interest, e.g. monitoring or triggering system for cardiac or respiratory gating
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Public Health (AREA)
- Signal Processing (AREA)
- Veterinary Medicine (AREA)
- Physiology (AREA)
- Biophysics (AREA)
- Pathology (AREA)
- General Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Dentistry (AREA)
- Artificial Intelligence (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Psychiatry (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19843446717 DE3446717A1 (de) | 1984-12-21 | 1984-12-21 | Kernspintomograph mit einem bewegungsdetektor |
| DE3446717.3 | 1984-12-21 | ||
| DE3510195.4 | 1985-03-21 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61154656A true JPS61154656A (ja) | 1986-07-14 |
| JPH0566811B2 JPH0566811B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1993-09-22 |
Family
ID=6253436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60283181A Granted JPS61154656A (ja) | 1984-12-21 | 1985-12-18 | Ｍｒｉトモグラフィ装置 |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPS61154656A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
| DE (1) | DE3446717A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0551306U (ja) * | 1991-12-17 | 1993-07-09 | 横河メディカルシステム株式会社 | ブリッジ一体型ボディコイル |
| JP2020081161A (ja) * | 2018-11-20 | 2020-06-04 | キヤノンメディカルシステムズ株式会社 | 磁気共鳴撮像装置 |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63200745A (ja) * | 1987-02-16 | 1988-08-19 | 株式会社東芝 | 磁気共鳴イメ−ジング装置 |
| JP2010522009A (ja) * | 2007-03-20 | 2010-07-01 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | 磁気共鳴撮像システム及び方法 |
| DE102014208537A1 (de) | 2014-05-07 | 2015-11-12 | Siemens Aktiengesellschaft | Magnetresonanzvorrichtung mit einer Bewegungserfassungseinheit sowie ein Verfahren zu einer Erfassung einer Bewegung eines Patienten während einer Magnetresonanzuntersuchung |
| EP3581954B1 (de) * | 2018-06-12 | 2023-03-08 | Siemens Healthcare GmbH | Sensor und magnetresonanztomograph mit drahtloser nahfeldübertragung von energie und daten |
-
1984
- 1984-12-21 DE DE19843446717 patent/DE3446717A1/de not_active Withdrawn
-
1985
- 1985-12-18 JP JP60283181A patent/JPS61154656A/ja active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0551306U (ja) * | 1991-12-17 | 1993-07-09 | 横河メディカルシステム株式会社 | ブリッジ一体型ボディコイル |
| JP2020081161A (ja) * | 2018-11-20 | 2020-06-04 | キヤノンメディカルシステムズ株式会社 | 磁気共鳴撮像装置 |
| US11035923B2 (en) | 2018-11-20 | 2021-06-15 | Canon Medical Systems Corporation | Magnetic resonance imaging apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0566811B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1993-09-22 |
| DE3446717A1 (de) | 1986-06-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4694836A (en) | MRI tomography apparatus for generating a motion signal | |
| US4680549A (en) | NMR coil arrangement | |
| US4602213A (en) | Automatic tuning circuit for nuclear magnetic resonance apparatus | |
| US5198768A (en) | Quadrature surface coil array | |
| US4799016A (en) | Dual frequency NMR surface coil | |
| CN101067649B (zh) | 磁共振成像射频发射线圈的有效解耦 | |
| KR101887130B1 (ko) | 자기 공명 시스템의 제어를 위한 방법 | |
| JP4149232B2 (ja) | Ｍｒ装置中の対象の位置を測定する方法、並びに、かかる方法を行うためのカテーテル及びｍｒ装置 | |
| US20100277175A1 (en) | Tunable and/or detunable mr receive coil arrangements | |
| JP2000354590A (ja) | Ｒｆボディ・コイル | |
| US5243287A (en) | Dynamically detuned NMR field coil | |
| AU7691598A (en) | Resonant structure for spatial and spectral-spatial imaging of free radical spin probes using radiofrequency time domain electron paramagnetic resonance spectroscopy | |
| EP2223137A1 (en) | Magnetic resonance system with cooling system and monitoring of helium pressure | |
| US6927575B2 (en) | Surface coil decoupling means for MRI systems | |
| US7391213B2 (en) | Three axis angle invariant RF coil assembly and method and system employing same | |
| EP2635914B1 (en) | Method of characterizing an rf transmit chain | |
| US6487436B1 (en) | Switchable field of view apparatus and method for magnetic resonance imaging | |
| Fitzsimmons et al. | A comparison of double‐tuned surface coils | |
| JPS61154656A (ja) | Ｍｒｉトモグラフィ装置 | |
| US5432451A (en) | Magnetic resonance imaging reflectometer tuning unit | |
| WO2014027271A2 (en) | Magnetic field probe system with synchronous excitation for use in a magnetic resonance imaging system | |
| Beck et al. | Phased array imaging on a 4.7 T/33cm animal research system | |
| JP2767311B2 (ja) | 磁気共鳴イメージング装置の高周波コイル | |
| JPS59122937A (ja) | 磁気共鳴イメージング装置 | |
| JP3170771B2 (ja) | 磁気共鳴イメージング装置用受信コイル |