Fig. 1.

A: slicing of a stack of 40 images (every 5th image is shown; I₅–I₄₀) along arbitrary slice planes (S₁–S₄) to generate virtual magnetic resonance (MR) images. B: interpolated virtual MR image for slice plane S₁ is shown. Contents of the stomach include air (black region, white outline) and meal with contrast agent (brighter region, black outline). The white and black dotted lines show the edges of the meal and air in the stomach, respectively, in original MR images that intersect with the contours of the stomach in the virtual MR images at seed points (white spheres). The white straight lines that intersect with the slice plane S₁ are image planes I₅–I₄₀.