Postprocessing techniques for time-resolved contrast-enhanced MR angiography

被引：6
|
作者：
Yoo, SK [1 ]
Watts, R [1 ]
Winchester, PA [1 ]
Zabih, R [1 ]
Wang, Y [1 ]
Prince, MR [1 ]
机构：
[1] Cornell Univ, Weill Med Coll, Dept Radiol MR Res, New York, NY 10021 USA
来源：
RADIOLOGY | 2002年 / 222卷 / 02期
关键词：
magnetic resonance (MR); image processing; vascular studies;
D O I：
10.1148/radiol.2222010608
中图分类号：
R8 [特种医学]; R445 [影像诊断学];
学科分类号：
1002 ; 100207 ; 1009 ;
摘要：
The purpose of this study was to improve dynamic two-dimensional projection magnetic resonance digital subtraction angiography by using remasking and filtering postprocessing techniques. Four methods were evaluated in SO patients: default mask subtraction, remasked subtraction, filtering based on the SD, and linear filtering. The results demonstrated that postprocessing techniques such as linear filtering can reduce background motion artifacts and improve arterial contrast-to-noise ratio.
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页码：564 / 568
页数：5
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