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Ultrasound Imaging

Cardiac dimensions, function, and Doppler | Other modalities

Cardiac dimensions, function, and Doppler

The platform has a high frequency ultrasound machine specifically manufactured for use in mice and rats. This system was developed by VisualSonics in Toronto, Canada. The probes range from 30 to 80 MHz with very shallow focal lengths, allowing excellent visualization (around 50 microns). In particular, the analyses of cardiac dimensions (wall thickness, chamber width, etc.) along with cardiac function (ejection fraction, fractional shortening) can be rapidly obtained. All non-invasive transthoracic cardiac ultrasound in performed under light general isoflurane anesthesia.







           Long axis view of a mouse heart                                M-Mode measurements


                                               Long axis view of a mouse heart


Other modalities

Pulsed-Wave Doppler Mode allows us to quantify the flow through the mitral or tricuspid valve
Tissue Doppler Mode allows us to track the motion of tissue, as mitral annulus

Mitral flow measurementmitral annulus velocity measurement







                          Mitral Flow                                                 Mitral Annulus Velocity

Visualization of embryos in utero, neonatal echography, abdominal ultrasound, and tumor analysis. The system is also equipped with Doppler technology and 3D analysis.








           Tumor surrounding an adrenal gland                       Three-dimensional view of a tumor (blue) into a kidney (red)


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CAF/EMIF, CHUV Rue du Bugnon 27 - CH-1005 Lausanne  - Switzerland  -  Phone +41 21 314 79 77