Techniques et applications de l’échographie haute résolution non invasive (Techniques and applications of non-invasive high-resolution ultrasound imaging).
J-M Grégoire, S Serrière, G Georgesco, F Jamet, A Bleuzen, F Ossant, F Levassort, F Tranquart, F PatatJ-M Grégoire, S Serrière, G Georgesco, F Jamet, A Bleuzen, F Ossant, F Levassort, F Tranquart, F Patat.
Laboratoire UltraSons Signaux et Instrumentation (LUSSI) ; INSERM.
Éditions Françaises de Radiologie, Vol 87 - N° 12-C2 - Décembre 2006

• > Today manufacturers propose echographic systems with a resolution ranging from 100 µm down to 30 µm. This requires ultrasonic frequencies ranging from 20 to 60 MHz. However, when associated with an increase in the attenuation of the wave in the media this limits the applications to superficial exploration. High frequencies also bring special technological limitations mainly in the fields of transducers, electronics, and acoustic coupling. Although high-resolution echography has long remained marginal and been used for the exploration of the skin or the anterior chamber of the eye, new powerful and easy-to-use devices have recently appeared on the market. With these new products, new applications have also appeared such as the exploration of the oral cavity or small laboratory animals (mice).