High frequency ultrasound imaging
(D. Vray)
Thanks to collaboration with Stuart Foster’s team in Toronto, we have been able to propose methods adapted to high frequency ultrasound data with the aim of imaging animal models
In 2005, the small animal imaging platform, Animage, acquired a high resolution ultrasound system (30-50 MHz) that strengthened the collaboration with the biological teams [MAI_-04a, Vet Ultraound] [MAI_-04b, Liver Int.] [
In parallel, we took part in the development of a 2D and 3D ultrasound imaging system at 25 MHz in partnership with GIP Ultrasons (Tours), the industrial companies ATYS and IMASONIC, the Cellular and Molecular Biology laboratory at the Lyon ENS and the Animage platform (Project GenHomme 2001-2004).
Mode M image at 40MHz of the heart of the mouse embryo at 15.5 days of gestation. The RF signals backscattered by the blood in the left ventricle (LV) were processed. (IS) Intraventricular septum (PV) Posterior wall. |
After deconvolution of the RF signal by the imaging system’s transfer function, the backscatter coefficient (AIB) was estimated. In the course of gestation, the coefficient goes through a maximum value during the period when the red blood cells lose their nucleus. |