New ultrasonic method reveals strokes and cancers

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    Note published 01.11.11

An NTNU/SINTEF research group believes that it has created ultrasonic images that are so clear that they make it easier to identify strokes and different types of cancer. Until now, one of the main problems with ultrasonic imaging has been the amount of noise in the images, which is due to reverberation or multiple echoes.

The new way of creating ultrasonic images (SURF imaging) uses a transducer that transmits two sets of sound waves rather than one: a low-frequency wave-form that manipulates its high-frequency equivalent, which in turn is used to create the actual image.