1. A system for providing image alignment data, the system comprising: a computer processor configured to: display a first image, a first position of the image relative to an object being recorded; display an image positioning control including: a first edge positioned at a first location of the image, a second edge, and a shaft extending between the first and second edges, the second edge being user-shiftable; and responsive to user input to shift the second edge from a second location to a third location: display the image in a second position relative to the object, the second position being offset from the first position; and update the recorded position of the image to reflect the second relative position in a memory where the recorded position is accessible for generating, based on the recorded position, a model of an anatomical region.