Background-suppressed MR venography of the brain using magnitude data: a high-pass filtering approach.
Background-suppressed MR venography of the brain using magnitude data: a high-pass filtering approach.
复制标题
使用幅度数据进行背景抑制的大脑 MR 静脉造影:一种高通滤波方法。
DOI:
10.1155/2014/812785
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发表时间:
2014
影响因子:
--
通讯作者:
Du YP
中科院分区:
文献类型:
--
作者:
Jin Z;Xia L;Zhang M;Du YP
Conventional susceptibility-weighted imaging (SWI) uses both phase and magnitude data for the enhancement of venous vasculature and, thus, is subject to signal loss in regions with severe field inhomogeneity and in the peripheral regions of the brain in the minimum-intensity projection. The purpose of this study is to enhance the visibility of the venous vasculature and reduce the artifacts in the venography by suppressing the background signal in postprocessing. A high-pass filter with an inverted Hamming window or an inverted Fermi window was applied to the Fourier domain of the magnitude images to enhance the visibility of the venous vasculature in the brain after data acquisition. The high-pass filtering approach has the advantages of enhancing the visibility of small veins, diminishing the off-resonance artifact, reducing signal loss in the peripheral regions of the brain in projection, and nearly completely suppressing the background signal. The proposed postprocessing technique is effective for the visualization of small venous vasculature using the magnitude data alone.
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影响因子:
4.4
作者:
Jin, Zhaoyang;Xia, Ling;Du, Yiping P.
通讯作者:
Du, Yiping P.
影响因子:
4.4
作者:
Du, Yiping P.;Jin, Zhaoyang;Tanabe, Jody
通讯作者:
Tanabe, Jody
影响因子:
4.4
作者:
Denk, Christian;Rauscher, Alexander
通讯作者:
Rauscher, Alexander
影响因子:
4.4
作者:
Pandian, Daniel S. J.;Ciulla, Carlo;Ayaz, Muhammad
通讯作者:
Ayaz, Muhammad
影响因子:
2.1
作者:
Pui, MH
通讯作者:
Pui, MH