What makes the EPISCAN different than conventional ultrasound systems?
The EPISCAN uses ultrasound with a frequency of up to 50MHz, while most conventional ultrasound system uses ultrasound in the region 5 to 10MHz. Our use of higher frequency ultrasound gives rise to greater resolution. Further, the EPISCAN uses much broader bandwidth ultrasound than conventional systems, meaning the transmitted energy pulse is a single cycle while most other systems transmit several pulses. These factors allow us to see features as small as hair follicles and their associated arrector pili muscle, as illustrated below.
However, the very high frequency ultrasound used cannot penetrate deep into the body and is used only to image down to about 20mm and with the highest resolution probes even less, while the lower resolution ultrasound system can image much deeper.