Quantitative assessment of susceptibility-weighted imaging processing methods
نویسندگان
چکیده
منابع مشابه
Susceptibility-weighted imaging and quantitative susceptibility mapping in the brain.
Susceptibility-weighted imaging (SWI) is a magnetic resonance imaging (MRI) technique that enhances image contrast by using the susceptibility differences between tissues. It is created by combining both magnitude and phase in the gradient echo data. SWI is sensitive to both paramagnetic and diamagnetic substances which generate different phase shift in MRI data. SWI images can be displayed as ...
متن کاملContribution of susceptibility-weighted imaging to acute stroke assessment.
BACKGROUND Susceptibility-weighted (SW) MRI provides insight into the pathophysiology of acute stroke. We report on the use of SW imaging (SWI) sequences in clinical practice and highlight the future applications. SUMMARY OF REVIEW SWI exploits the magnetic susceptibility effects generated by local inhomogeneities of the magnetic field. The paramagnetic properties of deoxyhemoglobin support s...
متن کاملSusceptibility weighted imaging (SWI).
Susceptibility differences between tissues can be utilized as a new type of contrast in MRI that is different from spin density, T1-, or T2-weighted imaging. Signals from substances with different magnetic susceptibilities compared to their neighboring tissue will become out of phase with these tissues at sufficiently long echo times (TEs). Thus, phase imaging offers a means of enhancing contra...
متن کاملMicrocalcification Detection Using Susceptibility Weighted Phase Imaging: Cross-correlation and Relative Magnetic Susceptibility Difference Methods
INTRODUCTION The feasibility of detecting calcium deposits in the breast has been investigated by simulation and experimentally. Calcium deposits in the breast can be early indicators of cancer. Calcium has a different magnetic susceptibility than water and tissue, so susceptibility weighted imaging (SWI) can be used to detect calcium (1). It is possible that combining SWI with other functional...
متن کاملSusceptibility-weighted imaging in Todd paralysis.
A 10-year-old boy presented with left hemiplegia and facial droop after prolonged seizure activity overnight. MRI showed hypoperfusion involving the right cerebral hemisphere. Susceptibility-weighted imaging (SWI) demonstrated prominence of ipsilateral draining veins, indicating increased deoxyhemoglobin content within the hypoperfused territory (figure). There was no acute infarct. Weakness im...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Magnetic Resonance Imaging
سال: 2013
ISSN: 1053-1807
DOI: 10.1002/jmri.24501