What is a banding artifact?
Banding artifact, or false contouring, is a common video compression impairment that tends to appear on large flat regions in encoded videos. These staircase-shaped color bands can be very noticeable in high-definition videos.
What is Ssfp in MRI?
Steady-state free precession MRI (SSFP) is a type of gradient echo MRI pulse sequence in which a steady, residual transverse magnetization (Mxy) is maintained between successive cycles. The sequence is noted for its superiority in dynamic/cine assessment of cardiac function.
What are flow artifacts in MRI?
Flow artifacts are caused by flowing blood or fluids in the body. A liquid flowing through a slice can experience an RF pulse and then flow out of the slice by the time the signal is recorded.
What causes artifacts on MRI?
Artifacts are caused by a variety of factors that may be patient-related such as voluntary and physiologic motion, metallic implants or foreign bodies. Finite sampling, k-space encoding, and Fourier transformation may cause aliasing and Gibbs artifact.
What is banding in art?
Banding is the wrong kind of gradient, consisting of two or more lines of the same color, but of different brightness (value).
What is Ssfp sequence?
How does MRI reduce flow artifact?
Gradient moment nulling (GMN) is an effective method for eliminating flow artifacts in gradient echo images, while presaturation is more applicable to the same task in spin echo acquisitions.
What causes banding artifact in bSSFP images?
Unfortunately, signal modulation is often observed as banding artifact in bSSFP images due to their high sensitivity to B 0 inhomogeneity. Banding artifact may be spatially shifted through variations in the bSSFP carrier frequency 3, or equivalently through radiofrequency (RF) phase-cycling where the phase of sequential RF pulses is incremented 4.
Is banding artifact suppression possible in balanced steady-state free precession imaging?
Balanced steady-state free precession (bSSFP) imaging has broad clinical applications by virtue of its high time efficiency and desirable contrast. Unfortunately, banding artifact is often seen as a result of signal modulation due to B 0 inhomogeneity. This study aims to develop an effective method for banding artifact suppression.
Is there an algorithm to remove banding artifacts completely?
The proposed algorithm is able to remove banding artifacts completely. It also compares favorably with the complex sum (CS), which is considered one of the more efficient methods for banding artifact correction.
What is a banding artifact in cardiac imaging?
Banding Artifact (Concept Id: C2828096) An artifact often associated with cardiac imaging where the algorithm which provides the best temporal resolution for each slice can provides suboptimal image quality for the entire volume since the cardiac temporal resolution changes from slice to slice.