1. A method of assessing treatments for a human heart, comprising: providing at least one image of human heart tissue from the heart to a computer system, wherein the image comprises a plurality of structural elements of the human heart; performing a first surgical structural modification of at least one of the plurality of structural elements of the human heart; performing at least a second surgical structural modification of at least one of the plurality of structural elements of the human heart, wherein the second surgical structural modification is performed independent of the first surgical structural modification; and comparing at least one effect of the first surgical structural modification on the human heart to at least one effect of the second surgical structural modification on the human heart, or comparing at least one effect of the second surgical structural modification on the human heart to at least one effect of the first surgical structural modification on the human heart.