Koninklijke Philips Corporation N.v.

Bio-Rad Laboratories, Inc.

Michael R Burcher

Jean-Luc Robert

Hua Xie

Anna Teresa Fernandez

Douglas Maxwell

Karl E Thiele

Brent Stephen Robinson

Nathan Wrench

Matthew James Hayes

Clifford R Cooley

Marek Myszko

Richard Day

Matthew Hayes

Shear Wave Dispersion Vibrometry (SDUV) is performed such that, after a single instance of their push pulse (), a plurality of tracking pulses () are issued to sample, more than once, each of a plurality of locations () on an associated monochromatic shear wave () in sampling that at least one of scans the plural locations in separate passes and, with a pulse of the plural tracking pulses, samples multiple ones of the plural locations concurrently. In a supplementary aspect, phase difference, for a given moment, is determined by taking into account intersample delay (), if the determination relies on samples that are taken at different times.

Push/tracking sequences for shear wave dispersion vibrometry

A filter device having a sonotrode connected to a filtration assembly. The filtration assembly has a filter body having a fluid passage. The filter body has a filter across the fluid passage. The filter assembly has a resonant frequency and the sonotrode is adapted to vibrate the filter assembly at or near the resonant frequency.

Ultrasonically cleaned low-pressure filter

An ultrasonic diagnostic imaging system produces an image with an extended focal range by transmitting a plurality of beams spaced along an array for multiline reception. The receive multilines of a plurality of transmit beams are spatially aligned and are combined with phase adjustment between the respective receive multilines to prevent undesired phase cancellation. The combined multilines produce the effect of an extended transmit focus so that an image produced using the combined multilines exhibits an extended focal range. To prevent motion artifacts the multiline order is adjustable as a function of image motion.

Ultrasonic synthetic transmit focusing with motion compensation

Shear Wave Dispersion Vibrometry (SDUV) is performed such that, after a single instance of their push pulse (), a plurality of tracking pulses () are issued to sample, more than once, each of a plurality of locations () on an associated monochromatic shear wave () in sampling that at least one of scans the plural locations in separate passes and, with a pulse of the plural tracking pulses, samples multiple ones of the plural locations concurrently. In a supplementary aspect, phase difference, for a given moment, is determined by taking into account intersample delay (156), if the determination relies on samples that are taken at different times.

Shear wave dispersion ultrasound vibrometry (SDUV) is implemented in some embodiments to form, from a single tracking pulse, in-parallel-directed receive lines (-) for making measurements of a monochromatic shear wave. In some embodiments, sampling is performed, over spatial locations by means of passes over the locations, in an interlaced pattern () for making measurements of the wave. In some embodiments, measurements are made of the wave and to the measurements are applied a bank of filters (S) that are tuned to respective candidate wave speeds, all without the need to determine a difference between wave phases at different spatial locations (-).

Spatially-fine shear wave dispersion ultrasound vibrometry sampling

An ultrasonic diagnostic imaging system produces an image with an extended focal range and reduced speckle by transmitting a plurality of beams spaced along an array for multiline reception. The receive multilines of a plurality of transmit beams are spatially aligned with phase adjustment between the respective receive multilines to effect signal alignment, detected and combined. The combined multilines produce the effect of an extended transmit focus so that an image produced using the combined multilines exhibits an extended focal range. Speckle is reduced by nonlinearly combining received multilines produced by different transmit apertures.

Growing community of inventors

Cambridge, United Kingdom

Michael R Burcher