Quadrature detection coil for interventional MRI
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United States of America Patent
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-
Mar 6, 2001
Grant Date -
N/A
app pub date -
Nov 25, 1998
filing date -
Nov 25, 1998
priority date (Note) -
Expired
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Abstract
An RF quadrature detection coil for interventional MRI comprises two nested orthogonal coils having generally rectangular shape in profile, each coil providing one 'channel' of signal for quadrature detection. Each rectangular coil has two conductor windings and a common side in which the two conductors along that side are displaced apart in a common plane orthogonal to the plane of the coil to form a circular opening. The two individual coils are configured such that their rectangular conductor winding portions lie in planes perpendicular to each other but their arcuate conductor winding portions coincide in the same plane. Four paralleled conductors are arranged around the shared circular opening while two paralleled conductors form the three sides of the rectangular portion of each individual coil. With this arrangement, the circular opening allows for entry of a body part for MR imaging while the spaces between the orthogonal rectangular sides of the two coils provide large open access areas for one or more instruments during interventional procedures.
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