This manual remeshing process lets you import scan data, sketch out your ideal topology solution, then extract a new quad mesh. For example, you can import a complex character mesh with millions of triangles, then extract new meshes to create the character's clothing.
Creating a mesh from curves is designed to be an iterative process. In most cases, you'll need to adjust your curve network, adjust settings, and inspect the output mesh a few times until you have a satisfactory result.
To create a mesh from curves
To start, you can Add curves to mesh edges to define the boundaries from which the rest of your topology design will flow.
Refer also to Best practices for manual remeshing.
Mudbox evaluates the curve network you have drawn and attempts to create a new quad mesh based on the curve intersections.