FI65862C - Nmr-avbildningsapparat - Google Patents
Nmr-avbildningsapparat Download PDFInfo
- Publication number
- FI65862C FI65862C FI823444A FI823444A FI65862C FI 65862 C FI65862 C FI 65862C FI 823444 A FI823444 A FI 823444A FI 823444 A FI823444 A FI 823444A FI 65862 C FI65862 C FI 65862C
- Authority
- FI
- Finland
- Prior art keywords
- signal
- imaging
- frequency
- bandwidth
- nuclear spin
- Prior art date
Links
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
- G01R33/3614—RF power amplifiers
-
- 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
- G01R33/3621—NMR receivers or demodulators, e.g. preamplifiers, means for frequency modulation of the MR signal using a digital down converter, means for analog to digital conversion [ADC] or for filtering or processing of the MR signal such as bandpass filtering, resampling, decimation or interpolation
Landscapes
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI823444A FI65862C (fi) | 1982-10-11 | 1982-10-11 | Nmr-avbildningsapparat |
DE3336694A DE3336694C2 (de) | 1982-10-11 | 1983-10-08 | Kernspin- oder NMR-Darstellungseinrichtung |
GB08327028A GB2129139B (en) | 1982-10-11 | 1983-10-10 | Nmr imaging assembly |
JP58189789A JPS5991345A (ja) | 1982-10-11 | 1983-10-11 | 核磁気共鳴結像アセンブリ |
US06/801,492 US4626784A (en) | 1982-10-11 | 1985-11-22 | NMR imaging device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI823444 | 1982-10-11 | ||
FI823444A FI65862C (fi) | 1982-10-11 | 1982-10-11 | Nmr-avbildningsapparat |
Publications (3)
Publication Number | Publication Date |
---|---|
FI823444A0 FI823444A0 (fi) | 1982-10-11 |
FI65862B FI65862B (fi) | 1984-03-30 |
FI65862C true FI65862C (fi) | 1984-07-10 |
Family
ID=8516130
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FI823444A FI65862C (fi) | 1982-10-11 | 1982-10-11 | Nmr-avbildningsapparat |
Country Status (5)
Country | Link |
---|---|
US (1) | US4626784A (de) |
JP (1) | JPS5991345A (de) |
DE (1) | DE3336694C2 (de) |
FI (1) | FI65862C (de) |
GB (1) | GB2129139B (de) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0132337A3 (de) * | 1983-07-21 | 1986-12-30 | The Regents Of The University Of California | Vorrichtung und Verfahren zur Verminderung des "Aliasing-Artefaktes" bei der sagittalen oder koronalen NMR-Bilderzeugung |
USRE37325E1 (en) * | 1984-09-24 | 2001-08-14 | Hanan Keren | Slice orientation selection arrangement |
US4710716A (en) * | 1985-09-20 | 1987-12-01 | Elscint Ltd. | Slice orientation selection arrangement |
US4613837A (en) * | 1984-11-07 | 1986-09-23 | Elscint, Ltd. | Multiple feed Rf coils |
US4748411A (en) * | 1987-02-19 | 1988-05-31 | Picker International, Inc. | Phase encoding technique for more rapid magnetic resonance imaging |
US4777438A (en) * | 1987-04-27 | 1988-10-11 | Picker International, Inc. | Multiple imaging with improved signal-to-noise ratio |
US4838274A (en) * | 1987-09-18 | 1989-06-13 | Air Products And Chemicals, Inc. | Perfluoro-crown ethers in fluorine magnetic resonance imaging |
US4859945A (en) * | 1988-05-03 | 1989-08-22 | Elscint Ltd. | Optimized signal to noise ratio |
US5177441A (en) * | 1989-06-16 | 1993-01-05 | Picker International, Inc. | Elliptical cross section gradient oil |
US5036282A (en) * | 1989-06-16 | 1991-07-30 | Picker International, Inc. | Biplanar gradient coil for magnetic resonance imaging systems |
US5185573A (en) * | 1991-04-16 | 1993-02-09 | Hewlett-Packard Company | Method for focusing of magnetic resonance images |
US5365173A (en) * | 1992-07-24 | 1994-11-15 | Picker International, Inc. | Technique for driving quadrature dual frequency RF resonators for magnetic resonance spectroscopy/imaging by four-inductive loop over coupling |
US5365172A (en) * | 1992-08-07 | 1994-11-15 | Brigham And Women's Hospital | Methods and apparatus for MRI |
US7468644B2 (en) * | 2004-11-05 | 2008-12-23 | New York University | Gradient coil arrangement and method for using the same |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3164661A (en) * | 1961-08-22 | 1965-01-05 | Gen Precision Inc | Distance measuring system by irradiating a target with light and sensing the reflected light |
US3789832A (en) * | 1972-03-17 | 1974-02-05 | R Damadian | Apparatus and method for detecting cancer in tissue |
US4015196A (en) * | 1974-04-05 | 1977-03-29 | National Research Development Corporation | Analysis of materials |
US4021726A (en) * | 1974-09-11 | 1977-05-03 | National Research Development Corporation | Image formation using nuclear magnetic resonance |
US4045731A (en) * | 1974-11-21 | 1977-08-30 | Takeda Riken Kogyo Kabushikikaisha | Filter having an automatically controlled variable cut-off frequency |
US3983399A (en) * | 1975-03-18 | 1976-09-28 | Picker Corporation | Tomography system having axial scanning |
CA1052861A (en) * | 1975-03-18 | 1979-04-17 | Varian Associates | Gyromagnetic resonance fourier transform zeugmatography |
US4051196A (en) * | 1975-05-27 | 1977-09-27 | Allied Chemical Corporation | Antistatic fiber containing chain-extended tetrols based on diamines |
US4100916A (en) * | 1976-04-27 | 1978-07-18 | King Donald L | Three-dimensional ultrasonic imaging of animal soft tissue |
GB1594751A (en) * | 1977-01-31 | 1981-08-05 | Tokyo Shibaura Electric Co | Method and apparatus for tomography by means of penetrating radiation |
GB1601816A (en) * | 1977-05-27 | 1981-11-04 | Nat Res Dev | Investigation of samples by nmr techniques |
JPS5441918A (en) * | 1977-09-09 | 1979-04-03 | Matsushita Electric Works Ltd | Method of making glasssfiber reinforced cement sheet |
GB1584949A (en) * | 1978-05-25 | 1981-02-18 | Emi Ltd | Imaging systems |
JPS6056225B2 (ja) * | 1978-08-25 | 1985-12-09 | 東亞合成株式会社 | 亜鉛系基材の表面処理方法 |
US4213184A (en) * | 1978-10-10 | 1980-07-15 | The United States Of America As Represented By The United States Department Of Energy | Signal processor for processing ultrasonic receiver signals |
JPS5643543A (en) * | 1979-09-18 | 1981-04-22 | Sanyo Electric Co Ltd | Muclear magnetic resonating method |
GB2091884B (en) * | 1981-01-26 | 1984-07-18 | Hinsaw Waldo Stephen | Investigation of samples by nmr techniques |
-
1982
- 1982-10-11 FI FI823444A patent/FI65862C/fi not_active IP Right Cessation
-
1983
- 1983-10-08 DE DE3336694A patent/DE3336694C2/de not_active Expired - Fee Related
- 1983-10-10 GB GB08327028A patent/GB2129139B/en not_active Expired
- 1983-10-11 JP JP58189789A patent/JPS5991345A/ja active Pending
-
1985
- 1985-11-22 US US06/801,492 patent/US4626784A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
FI823444A0 (fi) | 1982-10-11 |
JPS5991345A (ja) | 1984-05-26 |
DE3336694C2 (de) | 1994-09-29 |
US4626784A (en) | 1986-12-02 |
DE3336694A1 (de) | 1984-04-12 |
GB2129139A (en) | 1984-05-10 |
GB8327028D0 (en) | 1983-11-09 |
FI65862B (fi) | 1984-03-30 |
GB2129139B (en) | 1986-04-30 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
FI65862C (fi) | Nmr-avbildningsapparat | |
Hinshaw et al. | An introduction to NMR imaging: From the Bloch equation to the imaging equation | |
US7466132B2 (en) | Squid detected NMR and MRI at ultralow fields | |
Schlenga et al. | Low-field magnetic resonance imaging with a high-T c dc superconducting quantum interference device | |
JPS6231295B2 (de) | ||
US4528509A (en) | Spatially selective NMR | |
US4697147A (en) | Blood flow imaging using a CW NMR technique | |
Augustine et al. | Low field magnetic resonance images of polarized noble gases obtained with a dc superconducting quantum interference device | |
Simpson et al. | An optically pumped nuclear magnetic resonance gyroscope | |
US4739267A (en) | Method for calibrating the amplitude of radiofrequency excitation of a nuclear magnetic resonance imaging apparatus | |
US4567439A (en) | Apparatus for measuring the magnitude of a magnetic field | |
US4697149A (en) | NMR flow imaging using a composite excitation field and magnetic field gradient sequence | |
US5023555A (en) | Magnetic resonance imaging | |
US6133733A (en) | Magnetic resonance imaging | |
US5451874A (en) | Method and system for providing heterodyne pumping of magnetic resonance | |
Moore et al. | Experimental considerations in implementing a whole body multiple sensitive point nuclear magnetic resonance imaging system | |
Colacicchi et al. | Low-frequency three-dimensional ESR imaging of large samples | |
JPH05261081A (ja) | 核磁気共鳴を用いた検査装置 | |
Sarreshtedari et al. | Gradient spin echo enhanced proton precession magnetometer: A novel system for field gradient measurement | |
Schlenga et al. | High-T/sub c/SQUIDs for low-field NMR and MRI of room temperature samples | |
EP0845108B1 (de) | Bilderzeugung mittels magnetischer resonanz | |
JPH05344959A (ja) | 核磁気共鳴を用いた検査装置 | |
Pfeifer | Influence of the apparatus on nuclear magnetic resonance | |
CA1203282A (en) | Nmr scanner with motion zeugmatography | |
McDermott | SQUID-detected NMR and MRI in microtesla magnetic fields |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
MM | Patent lapsed |
Owner name: INSTRUMENTARIUM OY |