US Patent No: 8,193,810

Number of patents in Portfolio can not be more than 2000

MRI apparatus with RF surface coil having at least three resonance frequencies

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

An RF coil having at least three different resonance frequencies, wherein one of the resonance frequencies is adjusted to be a frequency fA of a magnetic resonance signal generated by a test subject, and the coil is adjusted so that ratio of difference between the frequency fA and a first frequency fB lower than fA and nearest to fA among the resonance frequencies (fA−fB), and difference between the frequency fA and a second resonance frequency fC higher than fA and nearest to the frequency fA among the resonance frequencies (fC−fA), should be from 0.5 to 2.0. There is provided a technique for receiving magnetic resonance signals always with high detection efficiency by an RF coil of an MRI apparatus even if significant loss is caused in the RF coil, or test subject is changed.

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

Patent OwnerAddressTotal Patents
HITACHI, LTD.TOKYO13771

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bito, Yoshitaka Kokubunji, JP 66 273
Hirata, Koji Kasukabe, JP 230 1203
Otake, Yosuke Kokubunji, JP 12 25
Soutome, Yoshihisa Tokyo, JP 39 77

Cited Art Landscape

Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (1)
* 6,081,120 Universal-multi-layered, multi-tuned RF probe for MRI and MRS 17 1998
 
THE UNIVERSITY OF QUEENSLAND (1)
* 7,446,528 Coil array for magnetic resonance imaging 9 2003
 
FOX CHASE CANCER CENTER (2)
* 5,212,450 Radio frequency volume resonator for nuclear magnetic resonance 31 1990
* 5,202,635 Radio frequency volume resonator for nuclear magnetic resonance 25 1991
 
The Trustees of the University of Pennsylvania (1)
* 5,243,289 Multiply-tuned probe for magnetic resonance imaging or spectroscopy 29 1991
 
AGILENT TECHNOLOGIES, INC. (3)
* 6,590,394 NMR probe with enhanced power handling ability 33 2001
* 7,081,753 Multiple tuned scroll coil 21 2004
* 2006/0017,438 Multiple tuned scroll coil 15 2004
 
HITACHI, LTD. (5)
* 6,828,791 Nuclear magnetic resonance apparatus probe having a solenoid coil and a saddle coil and nuclear magnetic resonance apparatus probe using the same 11 2002
* 7,084,634 Nuclear magnetic resonance apparatus probe 4 2004
* 7,138,802 Nuclear magnetic resonance apparatus probe 4 2006
* 2007/0285,096 Double-tuned RF coil 8 2007
* 2009/0128,155 RF coil and MRI apparatus 2 2008
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
GENERAL ELECTRIC COMPANY (2)
* 9,013,187 Balanced mixer for MRI system with a hub, intermediate frequency, oscillator, and pre-amp circuitry coupled together 0 2011
* 2012/0319,688 BALANCED MIXER FOR MRI SYSTEM AND METHOD OF MAKING SAME 1 2011
 
Other [Check patent profile for assignment information] (3)
* 9,316,709 Transceiver apparatus, system and methodology for superior In-Vivo imaging of human anatomy 0 2011
* 2012/0112,748 Transceiver apparatus, system and methodology for superior In-Vivo imaging of human anatomy 2 2011
* 2013/0119,987 Spatially Coincident MRI Receiver Coils and Method For Manufacturing 0 2012
 
NEW YORK UNIVERSITY (1)
* 9,423,476 Apparatus, systems and methods for facilitating signal excitation and/or reception in a magnetic resonance system 0 2012
* Cited By Examiner

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
7.5 Year Payment $3600.00 $1800.00 $900.00 Dec 5, 2019
11.5 Year Payment $7400.00 $3700.00 $1850.00 Dec 5, 2023
Fee Large entity fee small entity fee micro entity fee
Surcharge - 7.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 11.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge after expiration - Late payment is unavoidable $700.00 $350.00 $175.00
Surcharge after expiration - Late payment is unintentional $1,640.00 $820.00 $410.00