Fig. 2

Numerous iterations of the model design were made with the surgical team. A The first iteration incorporated only the fatty tissue and perforator vessels. A grid was represented through a boolean subtraction leaving a perforated void throughout the model, volumetrically. B The second iteration incorporated the muscle with a 1 cm grid encased in a clear representation of the fatty tissue. C The third iteration focused on making the muscle grid thinner and translucent which allowed for a better visualization of the intramuscular vessels. D The fourth iteration eliminated the fatty tissue which was deemed unimportant and proved to hinder the 3D understanding of the extra-muscular vessels. E The fifth iteration focused on legibility of the grid which was rendered in a contrasting color to the vessels and incorporated the umbilicus as the origin of the grid. F The final iteration focused on a refinement of the fall off and strength of the voxel-based grid while incorporating a color-based differentiation between intra- and extra-muscular vessel locations