An object of the present invention is to provide a method for the noninvasive imaging of a tissue (in particular, a cardiac tissue) in real time, and a device therefor. The present invention provides a method for imaging a sample that contains myocardial tissue and one or more blood vessels and/or one or more collagen-rich regions, the method comprising the steps of: (1) irradiating the sample that contains myocardial tissue and one or more blood vessels and/or one or more collagen-rich regions with an excitation light (2) detecting Raman scattering light from the sample and (3) analyzing the thus obtained Raman scattering light by using Raman scattering spectra that are characteristic of myocardial cells and red blood cells and/or collagen as indexes and thus imaging the sample.
