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[ctsim.git] / doc / ctsim-concepts.tex

diff --git a/doc/ctsim-concepts.tex b/doc/ctsim-concepts.tex
index 319ef48ca2fd277fc8a2c785dc06a403b89e9b34..9653a120ead80b7343711c9699b6a87b9dc600f9 100644 (file)
--- a/doc/ctsim-concepts.tex
+++ b/doc/ctsim-concepts.tex
@@ -1,6 +1,6 @@
 \chapter{Concepts}\index{Concepts}%
 \setheader{{\it CHAPTER \thechapter}}{}{}{}{}{{\it CHAPTER \thechapter}}%
-\setfooter{\thepage}{}{}{}{\small Manual v0.2}{\thepage}%
+\ctsimfooter%
 
 \section{Overview}\label{conceptoverview}\index{Concepts,Overview}%
 The operation of \ctsim\ begins with the phantom object.  A
@@ -186,10 +186,9 @@ calculated as
 For parallel geometry scanning, the focal length doesn't matter.
 However, divergent geometry scanning (equilinear and equiangular),
 the \emph{focal length ratio} should be set at \texttt{2} or more
-to avoid artifacts. Moreover, a value of less than \texttt{1},
-though it can be given to \ctsim, is physically impossible and it
-analagous to have having the x-ray source with the \emph{view
-diameter}.
+to avoid artifacts. Moreover, a value of less than \texttt{1} is
+physically impossible and it analagous to have having the x-ray
+source inside of the \emph{view diameter}.
 
 
 \subsection{Parallel Geometry}\label{geometryparallel}\index{Concepts,Scanner,Geometries,Parallel}
@@ -277,9 +276,8 @@ For equiangular geometry, the detectors are spaced around a circle
 covering an angular distance of
 \latexonly{$2\,\alpha$.}\latexignore{\emph{2 \alpha}.} The dotted
 circle in
-\begin{figure}
-\image{10cm;0cm}{equiangular.eps}
-\caption{Equiangluar geometry}
+\begin{figure}\label{equiangularfig}
+\image{10cm;0cm}{equiangular.eps} \caption{Equiangular geometry}
 \end{figure}
 figure 2.4 indicates the positions of the detectors in this case.
 
@@ -288,11 +286,11 @@ line. The length of the line depends upon
 \latexonly{$\alpha$}\latexignore{\emph{alpha}} and the \emph{focal
 length}. It is calculated as \latexonly{$4\,f \tan (\alpha / 2)$}
 \latexignore{\emph{4 x F x tan(\alpha/2)}}
-\begin{figure}
+\begin{figure}\label{equilinearfig}
 \image{10cm;0cm}{equilinear.eps}
 \caption{Equilinear geometry}
 \end{figure}
-An example of the this geometry is in figure 2.5.
+This geometry is shown in figure~2.5.
 
 
 \subsubsection{Examples of Geometry Settings}