Determination of specific absorption rate (SAR) in magnetic resonance imaging (MRI)
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United States of America Patent
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Jul 25, 2017
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app pub date -
Jan 11, 2013
filing date -
Jan 11, 2013
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Abstract
A magnetic resonance imaging (MRI) system includes static and gradient magnetic field generators, at least one radio frequency (RF) coil, at least one RF transmitter and at least one RF receiver. At least one power consumption monitor is coupled to locally measure power consumed by the RF coil. The MRI control system has at least one computer configured to determine a specific absorption rate (SAR) for a patient coupled to the RF coil based on at least: (a) RF power transmitted to said RF coil while the RF coil is inductively coupled to the patient, and (b) an electrical signal output from the at least one power consumption monitor while the RF coil is inductively coupled to the patient.
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