Susceptibility weighted imaging: data acquisition, image reconstruction and clinical applications.
Susceptibility-weighted imaging (SWI) is a novel method, that combines magnitude and phase information from a high-resolution, fully velocity compensated 3D T2-weighted gradient echo sequence. Phase images are unwrapped and high pass filtered to highlight phase changes associated with venous vessels and converted into a mask that is multiplied with the corresponding phase image. This technique has been applied thus far to the imaging of tumors, vascular malformations, trauma, stroke, micro-hemorrhages, and as a functional imaging method. The purpose of this paper is to present an overview of the current status of the technique and to illustrate its potential.
Rauscher
Alexander
A
Medical Physics Group, Institute for Diagnostic and Interventional Radiology, Friedrich Schiller University, Jena, Germany.
Sedlacik
Jan
J
Deistung
Andreas
A
Mentzel
Hans-Joachim
HJ
Reichenbach
Jürgen R
JR
D001921:Brain / Q000002:abnormalities / Q000033:anatomy & histology* / Q000473:pathology*; D001927:Brain Diseases / Q000473:pathology; D006801:Humans; D007091:Image Processing, Computer-Assisted; D007501:Iron / Q000378:metabolism; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008280:Magnetics; D010100:Oxygen / Q000097:blood*; D010690:Phlebography; D012680:Sensitivity and Specificity
D007501:Iron; D010100:Oxygen