DE3539256C2 - Verfahren zur Darstellung der kernmagnetischen Eigenschaften eines zu untersuchenden Objektes - Google Patents
Verfahren zur Darstellung der kernmagnetischen Eigenschaften eines zu untersuchenden ObjektesInfo
- Publication number
- DE3539256C2 DE3539256C2 DE3539256A DE3539256A DE3539256C2 DE 3539256 C2 DE3539256 C2 DE 3539256C2 DE 3539256 A DE3539256 A DE 3539256A DE 3539256 A DE3539256 A DE 3539256A DE 3539256 C2 DE3539256 C2 DE 3539256C2
- Authority
- DE
- Germany
- Prior art keywords
- magnetic field
- pulse
- field gradient
- layer
- examined
- 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.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 title claims description 61
- 230000005284 excitation Effects 0.000 claims description 41
- 239000006185 dispersion Substances 0.000 claims description 17
- 238000003384 imaging method Methods 0.000 claims description 15
- 230000005415 magnetization Effects 0.000 claims description 14
- 238000009826 distribution Methods 0.000 claims description 8
- 229910052739 hydrogen Inorganic materials 0.000 claims description 4
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- 229910052698 phosphorus Inorganic materials 0.000 claims description 3
- 239000011574 phosphorus Substances 0.000 claims description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 2
- 238000002595 magnetic resonance imaging Methods 0.000 claims description 2
- 230000004913 activation Effects 0.000 claims 1
- 238000005481 NMR spectroscopy Methods 0.000 description 14
- 239000010410 layer Substances 0.000 description 9
- 239000000126 substance Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000003745 diagnosis Methods 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000001208 nuclear magnetic resonance pulse sequence Methods 0.000 description 2
- 238000000655 nuclear magnetic resonance spectrum Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 206010006187 Breast cancer Diseases 0.000 description 1
- 208000026310 Breast neoplasm Diseases 0.000 description 1
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
- 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 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000012792 core layer Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
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- 239000011737 fluorine Substances 0.000 description 1
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- 238000002075 inversion recovery Methods 0.000 description 1
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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
- G01R33/44—Arrangements or instruments for measuring magnetic variables involving magnetic resonance using nuclear magnetic resonance [NMR]
- G01R33/48—NMR imaging systems
- G01R33/50—NMR imaging systems based on the determination of relaxation times, e.g. T1 measurement by IR sequences; T2 measurement by multiple-echo sequences
Landscapes
- Physics & Mathematics (AREA)
- High Energy & Nuclear Physics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI844561A FI75428C (fi) | 1984-11-21 | 1984-11-21 | Foerfarande foer kartlaeggning av de kaernmagnetiska egenskaperna hos ett objekt, som skall undersoekas. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE3539256A1 DE3539256A1 (de) | 1986-05-22 |
| DE3539256C2 true DE3539256C2 (de) | 1999-08-12 |
Family
ID=8519926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE3539256A Expired - Fee Related DE3539256C2 (de) | 1984-11-21 | 1985-11-06 | Verfahren zur Darstellung der kernmagnetischen Eigenschaften eines zu untersuchenden Objektes |
Country Status (5)
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3908392A1 (de) * | 1989-03-15 | 1990-09-20 | Bruker Medizintech | Verfahren zur lokalisierten magnetischen resonanz-spektroskopie (losy) und zur schichtselektiven anregung von transversalmagnetisierungen (slise) |
| DE3912142A1 (de) * | 1989-04-13 | 1990-10-25 | Philips Patentverwaltung | Verfahren fuer die kohlenstoff-kernresonanz-spektroskopie und anordnung zur durchfuehrung des verfahrens |
| DE3919052A1 (de) * | 1989-06-10 | 1991-01-03 | Kimmich Rainer | Verfahren und impulssequenzen zur tomographie, lokalisierten spektroskopie und relaxometrie auf der grundlage der magnetischen resonanz |
| US5307808A (en) * | 1992-04-01 | 1994-05-03 | General Electric Company | Tracking system and pulse sequences to monitor the position of a device using magnetic resonance |
| US5271400A (en) * | 1992-04-01 | 1993-12-21 | General Electric Company | Tracking system to monitor the position and orientation of a device using magnetic resonance detection of a sample contained within the device |
| US5404882A (en) * | 1992-08-05 | 1995-04-11 | Wisconsin Alumni Research Foundation | Adiabatic off-resonance spin-locking for enhanced tumor contrast in NMR imaging |
| US5353795A (en) * | 1992-12-10 | 1994-10-11 | General Electric Company | Tracking system to monitor the position of a device using multiplexed magnetic resonance detection |
| FI95625C (fi) * | 1993-03-10 | 1996-02-26 | Picker Nordstar Oy | Kuvausmenetelmä |
| US20040047443A1 (en) * | 2001-08-31 | 2004-03-11 | Bondoc Edwin L. | Electron capture by magnetic resonance |
| ITGE20110024A1 (it) * | 2011-03-03 | 2012-09-04 | Ct Naz Delle Ricerche | Metodo per la generazione di mappe dei tempi di rilassamento t1 e t2 in mri |
| US10172521B2 (en) | 2013-07-08 | 2019-01-08 | General Electric Company | Systems and methods for tracking imaging attenuators |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3932805A (en) * | 1973-02-02 | 1976-01-13 | Kichizo Niwa | Method of obtaining internal information of a measuring target from the out-side by the application of a nuclear magnetic resonance phenomenon |
| DE2611497A1 (de) * | 1975-03-18 | 1976-10-07 | Varian Associates | Verfahren und vorrichtung zur gyromagnetischen zeugmatographie |
| 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 |
| US4110681A (en) * | 1977-02-16 | 1978-08-29 | International Business Machines Corporation | NMR field frequency lock system |
| FI58868B (fi) * | 1979-06-01 | 1981-01-30 | Instrumentarium Oy | Nmr-diagnosanordning |
| GB2056088A (en) * | 1979-08-10 | 1981-03-11 | Emi Ltd | Improvements in or relating to nuclear magnetic resonance systems |
| GB2057142A (en) * | 1979-08-10 | 1981-03-25 | Emi Ltd | Nuclear magnetic resonance systems |
| GB1596160A (en) * | 1976-12-15 | 1981-08-19 | Nat Res Dev | Nuclear magnetic resonance apparatus and methods |
| US4290019A (en) * | 1978-05-31 | 1981-09-15 | National Research Development Corporation | Methods of deriving image information from objects |
| WO1981002788A1 (en) * | 1980-03-14 | 1981-10-01 | Nat Res Dev | Methods of producing image information from objects |
| US4318043A (en) * | 1978-07-20 | 1982-03-02 | The Regents Of The University Of California | Method and apparatus for rapid NMR imaging of nuclear densities within an object |
| US4345207A (en) * | 1980-04-24 | 1982-08-17 | The United States Of America As Represented By The Secretary Of The Navy | Method and apparatus for obtaining enhanced NMR signals |
| EP0091008A2 (en) * | 1982-04-05 | 1983-10-12 | General Electric Company | Method of three-dimensional NMR imaging using selective excitation |
| GB2122753A (en) * | 1982-06-09 | 1984-01-18 | Picker Int Ltd | Nuclear magnetic resonance method and apparatus |
| EP0098426A2 (en) * | 1982-07-01 | 1984-01-18 | General Electric Company | Method of eliminating effects of spurious free induction decay NMR signal caused by imperfect 180 degrees RF pulses |
-
1984
- 1984-11-21 FI FI844561A patent/FI75428C/fi not_active IP Right Cessation
-
1985
- 1985-11-06 DE DE3539256A patent/DE3539256C2/de not_active Expired - Fee Related
- 1985-11-13 GB GB8528021A patent/GB2167564B/en not_active Expired
- 1985-11-21 JP JP60262344A patent/JPS61130863A/ja active Granted
-
1987
- 1987-07-07 US US07/070,658 patent/US4799015A/en not_active Expired - Lifetime
Patent Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3932805A (en) * | 1973-02-02 | 1976-01-13 | Kichizo Niwa | Method of obtaining internal information of a measuring target from the out-side by the application of a nuclear magnetic resonance phenomenon |
| 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 |
| DE2611497A1 (de) * | 1975-03-18 | 1976-10-07 | Varian Associates | Verfahren und vorrichtung zur gyromagnetischen zeugmatographie |
| US4070611A (en) * | 1975-03-18 | 1978-01-24 | Varian Associates, Inc. | Gyromagnetic resonance fourier transform zeugmatography |
| GB1596160A (en) * | 1976-12-15 | 1981-08-19 | Nat Res Dev | Nuclear magnetic resonance apparatus and methods |
| US4110681A (en) * | 1977-02-16 | 1978-08-29 | International Business Machines Corporation | NMR field frequency lock system |
| US4290019A (en) * | 1978-05-31 | 1981-09-15 | National Research Development Corporation | Methods of deriving image information from objects |
| US4318043A (en) * | 1978-07-20 | 1982-03-02 | The Regents Of The University Of California | Method and apparatus for rapid NMR imaging of nuclear densities within an object |
| FI58868B (fi) * | 1979-06-01 | 1981-01-30 | Instrumentarium Oy | Nmr-diagnosanordning |
| GB2057142A (en) * | 1979-08-10 | 1981-03-25 | Emi Ltd | Nuclear magnetic resonance systems |
| GB2056088A (en) * | 1979-08-10 | 1981-03-11 | Emi Ltd | Improvements in or relating to nuclear magnetic resonance systems |
| WO1981002788A1 (en) * | 1980-03-14 | 1981-10-01 | Nat Res Dev | Methods of producing image information from objects |
| US4345207A (en) * | 1980-04-24 | 1982-08-17 | The United States Of America As Represented By The Secretary Of The Navy | Method and apparatus for obtaining enhanced NMR signals |
| EP0091008A2 (en) * | 1982-04-05 | 1983-10-12 | General Electric Company | Method of three-dimensional NMR imaging using selective excitation |
| GB2122753A (en) * | 1982-06-09 | 1984-01-18 | Picker Int Ltd | Nuclear magnetic resonance method and apparatus |
| EP0098426A2 (en) * | 1982-07-01 | 1984-01-18 | General Electric Company | Method of eliminating effects of spurious free induction decay NMR signal caused by imperfect 180 degrees RF pulses |
Non-Patent Citations (3)
| Title |
|---|
| FREEMAN, Walter J. - LEIPERT, Thomas K. - DALRYMPLE, David L. - NOGGLE, Joseph H.: Automated nonselective measurement of T 1 p by Fourier transform NMR. In: Rev.Sci.Instr., Vol. 47, Nr. 1, 1976, S. 146-148 * |
| TANAKA, Kunio - YAMADA, Yoshifumi - YAMAMOTO, Etsuji - ABE, Zenmon: Noninvasive Measurement of Biological Information by Nuclear Magnetic Resonance: Measurement of Relaxation Time of a Particular Target by Magnetic Focusing Method. In: Proceedings of the IEEE, Vol. 66, Nr. 11, 1978, S.1582-1583 * |
| US-Z.: "J. Magn. Reson.", Vol. 14, 1974, S.44-51 * |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2167564B (en) | 1989-06-14 |
| DE3539256A1 (de) | 1986-05-22 |
| GB2167564A (en) | 1986-05-29 |
| GB8528021D0 (en) | 1985-12-18 |
| JPS61130863A (ja) | 1986-06-18 |
| US4799015A (en) | 1989-01-17 |
| JPH0576298B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1993-10-22 |
| FI844561A0 (fi) | 1984-11-21 |
| FI75428C (fi) | 1988-06-09 |
| FI844561L (fi) | 1986-05-22 |
| FI75428B (fi) | 1988-02-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8110 | Request for examination paragraph 44 | ||
| 8127 | New person/name/address of the applicant |
Owner name: PICKER NORDSTAR, INC., HELSINKI, FI |
|
| 8128 | New person/name/address of the agent |
Representative=s name: WOLF, G., DIPL.-ING., PAT.-ANW., 63456 HANAU |
|
| D2 | Grant after examination | ||
| 8364 | No opposition during term of opposition | ||
| 8339 | Ceased/non-payment of the annual fee |