FIELD: physics.
SUBSTANCE: power circuit contains a power supply system, an energy storage device, and a gradient power supply amplifier in the gradient coil of the system forming magnetic resonance images, herewith the power supply system includes a power source for supplying the first voltage to the gradient amplifier for excitation of the gradient coil, herewith the gradient amplifier output is connected with the gradient coil; herewith the energy storage device has an input coupled to the power source, herewith the energy storage device is configured to supply the second voltage to the gradient amplifier, herewith the energy storage device is parallel to the gradient amplifier and the power source, herewith the energy storage device contains a voltage converter configured to control the second voltage so that to compensate for, at least, part of the change in the first voltage induced by the excitation of the gradient coil.
EFFECT: reduction of the geometric distortions in the reconstructed magnetic resonance image.
10 cl, 5 dwg
Title | Year | Author | Number |
---|---|---|---|
METHOD AND DEVICE FOR CONTROLLING OUTPUT POWER OF MOBILE STATION | 1999 |
|
RU2160502C1 |
MRI GRADIENT AMPLIFIER OPERATING AT DIFFERENT RATES OF RISE | 2013 |
|
RU2626026C2 |
POWER SUPPLY CIRCUIT OF AMPLIFIER | 1994 |
|
RU2155439C2 |
RADIO-FREQUENCY TRANSMISSION MODULE WITH LOCAL FIELD MONITORING UNIT FOR MAGNETIC RESONANCE EXAMINATION SYSTEM | 2016 |
|
RU2713807C2 |
ELECTROMAGNETIC UNIT FOR THROWING OF DIELECTRIC MACRO BODIES | 2012 |
|
RU2518162C1 |
METHOD OF GENERATING MULTI-BAND RF PULSES | 2015 |
|
RU2689974C2 |
DYNAMIC RESONANCE MATCHING CIRCUIT FOR WIRELESS ENERGY RECEIVERS | 2012 |
|
RU2596606C2 |
POWER SOURCE DEVICE | 2013 |
|
RU2617831C2 |
ILLUMINATION DEVICE | 2010 |
|
RU2554080C2 |
POWER SUPPLY SYSTEM WITH REDUCED POWER LOSSES, ELECTRONIC DEVICE AND CONTROLLER | 2011 |
|
RU2556700C2 |
Authors
Dates
2017-04-18—Published
2013-04-04—Filed