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Methods to Visualize Interiors of Human Colons in Volumetric Datasets.
This paper examines three categories for visualizing the interior of the human colon. In the 2D slice-viewing category, axial, coronal and saggital slices of the colon volume are displayed. In the 3D endoluminal viewing category, also called "virtual fly-through", a virtual camera is placed inside the colon lumen, and renditions of the scene are generated. In the category of unwinding / flattening methods, the tortuous colon is either transformed into straighter, cylindrical geometry or the whole colon lumen is mapped onto a single 2D image. In each category, advantages and limitations or challenges are discussed.