Magnetic resonance microscopy is device used for investigating heart of a mouse....more about it below...
Four-dimensional MR microscopy of the mouse heart using radial acquisition and liposomal gadolinium contrast agent
Magnetic resonance microscopy (MRM) has become a standard tool for investigating cardiac structure and function in the mouse. The majority of MR work on mice has been done with 2D acquisition methods with limited resolution along the third axis (1-4). 3D studies have shown promise in the clinical arena as they increase signal-to-noise-ratio (SNR) per unit time and allow for higher in-plane resolution, ultimately allowing more sensitive calculation of cardiac function. But 3D applications in small animal imaging thus far have been limited. While 3D studies have been performed in the rat (5), those studies had limited temporal resolution (systole and diastole). Feintuch et al. have shown 4D (3D spatial+time) data in the mouse at limited spatial resolution (8 nL), limited temporal resolution (12 ms), and with long scan times of 1–2 hours (6).
Download Complete Project on MR microscopy of the mouse heart
Source: http://www.ncbi.nlm.nih.gov