FLOW IMAGING

摘要

A system suitable for reducing static or slow moving echoes from acoustic boundaries in a system such as pipe walls, blood vessels, tissue structures so that an image from flowing or time varying media such as water, oil, blood etc may be imaged more clearly, the system including an analogue-to-digital converter for digitizing a received analogue signal from a detector, means for digitally separating static or slow moving components of the digital signal, a digital-to-analogue converter to provide an analogue version of the separated static or slow moving components of the signal, and a subtractor to subtract the analogue version of the static or the slow moving components of the signal from an analogue signal received from a detector to produce an analogue signal corresponding to the remaining flow components of the signal.

主权项

1. A system for reducing static or slow moving echoes in an image, the system comprising:
an analogue-to-digital converter configured to digitize a received analogue signal received from a detector to a digital signal; a processor configured to digitally separate static or slow moving components of the digital signal; a digital-to-analogue converter configured to provide an analogue version of the separated static or slow moving components of the digital signal; and a subtractor configured to subtract the analogue version of the separated static or slow moving components of the digital signal from the received analogue signal received from the detector to produce an analogue signal corresponding to remaining flow components of the digital signal.