1. A medical imaging system for acquiring medical image data from an imaging volume, the medical imaging system comprising: a tissue treating system for treating a target volume of a subject; a computer system comprising a processor, wherein the computer system is adapted for controlling the medical imaging system; and a memory containing machine readable instructions for execution by the processor, wherein execution of the instructions cause the processor to: acquire medical image data by controlling the medical imaging system; reconstruct a medical image using the medical image data; receive an image segmentation seed derived from a treatment plan, wherein the treatment plan is descriptive of the target volume, and identify a treated volume in the medical image by segmenting the medical image in accordance with the image segmentation seed.