Imaging of ultrasonic fields with MRI
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United States of America Patent
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Jun 12, 2001
Grant Date -
N/A
app pub date -
Dec 18, 1998
filing date -
Dec 18, 1998
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Expired
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Abstract
An MRI system is employed to produce an image of an ultrasonic wave propagating through tissue or the like. An imaging pulse sequence used to acquire the image data is performed in synchronism with the operation of an ultrasonic transducer, and reconstructed phase images measure the motion of excited spins. Physical parameters of the acoustic field such as acoustic pressure, acoustic intensity and wave number may be calculated and imaged. Non-linear propagation characteristics of the acoustic field are also measured and imaged.
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