Charge balanced fluorescence contrast agent for high signal to background ratio and Method for imaging using the same

摘要

The present invention relates to a charge balanced fluorescence contrast agent, capable of providing a high signal to background ratio when optically observing tissues and cells using a fluorescence imaging device for image guided surgery, wherein the contrast agent emits fluorescence so that the signal to background ratio is detected to be at least 1.1 or greater, wherein the conjugate is represented by chemical formula I.