this is for holding javascript data
Ayan Sengupta edited Methods_cont.tex
over 9 years ago
Commit id: 3c3fefdfa7c7165f474994b5d804b32f075bc726
deletions | additions
diff --git a/Methods_cont.tex b/Methods_cont.tex
index c4f2b69..b49eb3a 100644
--- a/Methods_cont.tex
+++ b/Methods_cont.tex
...
\subsection{Method 2}
As understood from the previous method that it may be quick but the veins mask thus generated is not of the best quality. The second method considers both the magnitude volume and the phase volume of SW images. Before the steps of processing are described its worthwhile to take a closer look at what are the magnitude volume and phase volume of the MR images \cite{16398421}. Generally complex MR image acquisition can be expressed as:
\begin{math}
I = |I|*exp(\phi)
\end{math}
Magnetic resonance (MR) phase images often contain useful
information, such as spatial inhomogeneities in the polarizing
magnetic field and the velocity of blood flow [1], [2]. Extracting
the phase image from its measured complex MR image
is nontrivial because is uniquely defined only in the
principal value range of . Any value outside this interval
will be folded back into the principal value range to produce the
so-called wrapped phase , which differs from by an unknown
integer multiple of . Formally, the phase unwrapping problem
is defined as: given the wrapped phase , find the
“true” phase , which is related to by
This method consists of the following steps.
\begin{itemize}
\item \textbf{Step 1:
Inverting} Phase Unwrapping}
\end{itemize}