Subtraction in View-Shared 3D Contrast-Enhanced MRA
نویسندگان
چکیده
INTRODUCTION The use of a pre-contrast reference image, referred to as a mask, to suppress background signal and improve output contrast-to-noise ratio (CNR) through subtraction is common in contrast-enhanced MR angiography. It is critical that this operation be performed to optimize output image quality. As has been previously reported [1-3] it is advantageous to use complex subtraction for this removal operation. In this work we extend this discussion to the optimal selection of the mask for the case of 3D time-resolved view-shared reconstructions, using the CAPR sequence [4] as an example.
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