IL96530A0 - Mri apparatus having an optimally adjusted detection chain and an enlarged dynamic range - Google Patents

Mri apparatus having an optimally adjusted detection chain and an enlarged dynamic range

Info

Publication number
IL96530A0
IL96530A0 IL96530A IL9653090A IL96530A0 IL 96530 A0 IL96530 A0 IL 96530A0 IL 96530 A IL96530 A IL 96530A IL 9653090 A IL9653090 A IL 9653090A IL 96530 A0 IL96530 A0 IL 96530A0
Authority
IL
Israel
Prior art keywords
dynamic range
mri apparatus
optimally adjusted
detection chain
adjusted detection
Prior art date
Application number
IL96530A
Other languages
English (en)
Original Assignee
Philips Nv
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 Philips Nv filed Critical Philips Nv
Publication of IL96530A0 publication Critical patent/IL96530A0/xx

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
    • G01R33/3621—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
    • 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
    • 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
    • G01R33/58—Calibration of imaging systems, e.g. using test probes, Phantoms; Calibration objects or fiducial markers such as active or passive RF coils surrounding an MR active material
    • G01R33/583—Calibration of signal excitation or detection systems, e.g. for optimal RF excitation power or frequency

Landscapes

  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Radiology & Medical Imaging (AREA)
  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
IL96530A 1989-12-05 1990-12-04 Mri apparatus having an optimally adjusted detection chain and an enlarged dynamic range IL96530A0 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL8902991A NL8902991A (nl) 1989-12-05 1989-12-05 Mri inrichting met optimale instelling van de detektieketen en vergroot dynamisch bereik.

Publications (1)

Publication Number Publication Date
IL96530A0 true IL96530A0 (en) 1991-09-16

Family

ID=19855741

Family Applications (1)

Application Number Title Priority Date Filing Date
IL96530A IL96530A0 (en) 1989-12-05 1990-12-04 Mri apparatus having an optimally adjusted detection chain and an enlarged dynamic range

Country Status (5)

Country Link
US (1) US5093621A (ja)
EP (1) EP0431684A1 (ja)
JP (1) JPH03210237A (ja)
IL (1) IL96530A0 (ja)
NL (1) NL8902991A (ja)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5472479A (en) * 1994-01-26 1995-12-05 Ltv Steel Company, Inc. Method of making ultra-low carbon and sulfur steel
JP2001087243A (ja) * 1999-09-24 2001-04-03 Toshiba Corp 磁気共鳴診断装置
US6448770B1 (en) * 2000-03-30 2002-09-10 Koninklijke Philips Electronics, N.V. Gain selection for magnetic resonance imaging and spectroscopy
US6943548B1 (en) 2001-06-22 2005-09-13 Fonar Corporation Adaptive dynamic range receiver for MRI
US6621433B1 (en) 2001-06-22 2003-09-16 Fonar Corporation Adaptive dynamic range receiver for MRI
DE10219528A1 (de) * 2002-05-02 2003-11-13 Philips Intellectual Property Schnelles Kernresonanz-Bildgebungsverfahren mit Gradienten-Echos
US6977502B1 (en) 2002-11-04 2005-12-20 Fonar Corporation Configurable matrix receiver for MRI
JP3802891B2 (ja) 2003-07-02 2006-07-26 ジーイー・メディカル・システムズ・グローバル・テクノロジー・カンパニー・エルエルシー ゲイン調節方法および磁気共鳴撮影装置
WO2008078303A2 (en) * 2006-12-22 2008-07-03 Koninklijke Philips Electronics N.V. Sample-dependent amplification of magnetic resonance signal

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4070708A (en) * 1976-09-01 1978-01-24 Varian Associates, Inc. Analytical instrument optimum data acquisition method and apparatus
JPS61191949A (ja) * 1985-02-19 1986-08-26 Toshiba Corp 磁気共鳴イメ−ジング装置
US4695798A (en) * 1985-04-22 1987-09-22 The Regents Of The University Of California Method and apparatus for generating frequency selective pulses for NMR spectroscopy
DE3614154A1 (de) * 1985-05-03 1986-11-06 British Technology Group Ltd., London Nmr-geraet mit einem schaltbaren daempfungsglied
JPS622143A (ja) * 1985-06-28 1987-01-08 Yokogawa Electric Corp Ｎｍｒ撮像装置の自動利得調整装置
US4703267A (en) * 1985-07-17 1987-10-27 Advanced Nmr Systems, Inc. High dynamic range in NMR data acquisition
US5015954A (en) * 1989-06-30 1991-05-14 Auburn International, Inc. Magnetic resonance analysis in real time, industrial usage mode

Also Published As

Publication number Publication date
EP0431684A1 (en) 1991-06-12
US5093621A (en) 1992-03-03
JPH03210237A (ja) 1991-09-13
NL8902991A (nl) 1991-07-01

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