[go: up one dir, main page]
More Web Proxy on the site http://driver.im/

Avdievich et al., 2019 - Google Patents

Evaluation of short folded dipole antennas as receive elements of ultra‐high‐field human head array

Avdievich et al., 2019

View PDF @Full View
Document ID
1253943929641308694
Author
Avdievich N
Solomakha G
Ruhm L
Scheffler K
Henning A
Publication year
Publication venue
Magnetic resonance in medicine

External Links

Snippet

Purpose To improve the receive (Rx) performance of a human head transceiver (TxRx) array at 9.4 T without compromising its transmit (Tx) performance, a novel 16‐element array was developed, constructed, and tested. Methods We designed and constructed a phased array …
Continue reading at onlinelibrary.wiley.com (PDF) (other versions)

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
    • G01R33/34—Constructional details, e.g. resonators, specially adapted to MR
    • G01R33/341—Constructional details, e.g. resonators, specially adapted to MR comprising surface coils
    • 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
    • G01R33/3642—Mutual coupling or decoupling of multiple coils, e.g. decoupling of a receive coil from a transmission coil, or intentional coupling of RF coils, e.g. for RF magnetic field amplification
    • G01R33/365—Decoupling of multiple RF coils wherein the multiple RF coils have the same function in MR, e.g. decoupling of a receive coil from another receive coil in a receive coil array, decoupling of a transmission coil from another transmission coil in a transmission coil array
    • 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
    • G01R33/34—Constructional details, e.g. resonators, specially adapted to MR
    • G01R33/34046—Volume type coils, e.g. bird-cage coils; Quadrature bird-cage coils; Circularly polarised coils
    • 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
    • G01R33/34—Constructional details, e.g. resonators, specially adapted to MR
    • G01R33/345—Constructional details, e.g. resonators, specially adapted to MR of waveguide type
    • G01R33/3453—Transverse electromagnetic [TEM] coils
    • 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
    • G01R33/38—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field
    • G01R33/381—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field using electromagnets
    • 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
    • G01R33/288—Provisions within MR facilities for enhancing safety during MR, e.g. reduction of the specific absorption rate [SAR], detection of ferromagnetic objects in the scanner room
    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
    • G01R29/08—Measuring electromagnetic field characteristics
    • G01R29/0807—Measuring electromagnetic field characteristics characterised by the application
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/28—Testing of electronic circuits, e.g. by signal tracer

Similar Documents

Publication Publication Date Title
Ertürk et al. Toward imaging the body at 10.5 tesla
Ruytenberg et al. Shielded‐coaxial‐cable coils as receive and transceive array elements for 7T human MRI
Ertürk et al. A 16‐channel combined loop‐dipole transceiver array for 7 T esla body MRI
Shajan et al. Three‐layered radio frequency coil arrangement for sodium MRI of the human brain at 9.4 Tesla
Lattanzi et al. Approaching ultimate intrinsic signal‐to‐noise ratio with loop and dipole antennas
Shajan et al. A 16‐channel dual‐row transmit array in combination with a 31‐element receive array for human brain imaging at 9.4 T
Keil et al. A 64‐channel 3T array coil for accelerated brain MRI
Raaijmakers et al. The fractionated dipole antenna: A new antenna for body imaging at 7 T esla
Avdievich et al. Resonant inductive decoupling (RID) for transceiver arrays to compensate for both reactive and resistive components of the mutual impedance
Avdievich et al. Evaluation of short folded dipole antennas as receive elements of ultra‐high‐field human head array
Zhao et al. Nineteen‐channel receive array and four‐channel transmit array coil for cervical spinal cord imaging at 7T
Avdievich et al. Combination of surface and ‘vertical’loop elements improves receive performance of a human head transceiver array at 9.4 T
Avdievich et al. Double‐row 18‐loop transceive–32‐loop receive tight‐fit array provides for whole‐brain coverage, high transmit performance, and SNR improvement near the brain center at 9.4 T
Avdievich et al. Evaluation of transmit efficiency and SAR for a tight fit transceiver human head phased array at 9.4 T
Clément et al. A human cerebral and cerebellar 8‐channel transceive RF dipole coil array at 7T
Alon et al. Transverse slot antennas for high field MRI
Duan et al. A 7T spine array based on electric dipole transmitters
Avdievich et al. Decoupling of a tight‐fit transceiver phased array for human brain imaging at 9.4 T: Loop overlapping rediscovered
Avdievich et al. Bent folded‐end dipole head array for ultrahigh‐field MRI turns “dielectric resonance” from an enemy to a friend
Avdievich et al. Double‐tuned 31P/1H human head array with high performance at both frequencies for spectroscopic imaging at 9.4 T
Pang et al. Parallel traveling‐wave MRI: A feasibility study
Hoffmann et al. Human brain imaging at 9.4 T using a tunable patch antenna for transmission
Avdievich et al. A 32‐element loop/dipole hybrid array for human head imaging at 7 T
Tavaf et al. A self‐decoupled 32‐channel receive array for human‐brain MRI at 10.5 T
Paška et al. A rigid, stand‐off hybrid dipole, and birdcage coil array for 7 T body imaging