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Freiburger, WA
Paul Freiburger, Seattle, WA US
| Patent application number | Description | Published |
|---|---|---|
| 20090216119 | SPARSE TISSUE PROPERTY MEASUREMENTS IN MEDICAL ULTRASOUND IMAGING - The shear modulus information is measured for sparse locations in a scanning field of view. For other locations, the shear modulus information is calculated as a function of the sparsely measured values and strain information. For example, shear modulus values are provided for every grid point in a field of view based on strain values for every grid point and on sparsely measured shear modulus values. | 08-27-2009 |
| 20100016718 | Shear Wave Imaging - Shear wave imaging is provided in medical diagnostic ultrasound. A region is imaged to determine a location in which to calculate shear velocity. The shear velocity is estimated for the location. The imaging may guide the identification of the location, reducing the time to determine useful shear information. The estimate of shear may be validated, such as using cross-validation, to indicate the confidence level of the shear value. The shear velocity may be displayed relative to a scale of shear velocities associated with a type of tissue, such as tissue for an organ. The location on a scale may be more intuitive for a user. | 01-21-2010 |
| 20100016719 | ADAPTIVE REGULATION OF ACOUSTIC OUTPUT POWER IN MEDICAL ULTRASOUND IMAGING - Acoustic output power is adaptively regulated in medical diagnostic ultrasound imaging. Given transmit settings, the acoustic power and/or another setting may be altered to avoid violating a limit set by regulation. The limit is based, at least in part, on an assumed attenuation. By measuring the attenuation, such as by identifying a type of tissue, the power and/or limit may be altered or adapt. By accounting for the attenuation in the region to be scanned, a greater output power may be possible while still providing the same level of safety. | 01-21-2010 |
Paul Freiburger, Issaquah, WA US
| Patent application number | Description | Published |
|---|---|---|
| 20090005682 | Tissue complex modulus and/or viscosity ultrasound imaging - Complex response of tissue is calculated as function of a convolution relationship associated with measured strain with applied stress. In the Fourier or frequency domain, the convolution is a simple algebraic computation, such as multiplication. The complex response provides elasticity and viscosity information, assisting diagnosis. Complex compliance may be directly calculated from the strain and stress. Complex fluidity may be directly calculated from strain rate and stress. | 01-01-2009 |
Paul D. Freiburger, Seattle, WA US
| Patent application number | Description | Published |
|---|---|---|
| 20090005680 | MEASURING TRANSDUCER MOVEMENT METHODS AND SYSTEMS FOR MULTI-DIMENSIONAL ULTRASOUND IMAGING - Methods and systems for measuring transducer movement are provided. For example, free-hand scanning for three-dimensional imaging is provided. An optical sensor within the transducer measures motion along the skin surface similar to measuring movement of a personal computer mouse with an optical sensor. Alternatively or additionally, the transducer is tilted at an angle other than perpendicular to the skin surface generally towards or away from the direction in which the transducer is translated. The transducer is then translated while maintaining the angle. Motion to or from the transducer is measured, and a component of the motion measured while the transducer is maintained at an angle is parallel to the direction of translation. The component of motion is angle corrected and used to determine a distance of travel. | 01-01-2009 |
| 20090012396 | MEASURING TRANSDUCER MOVEMENT METHODS AND SYSTEMS FOR MULTI-DIMENSIONAL ULTRASOUND IMAGING - Methods and systems for measuring transducer movement are provided. For example, free-hand scanning for three-dimensional imaging is provided. An optical sensor within the transducer measures motion along the skin surface similar to measuring movement of a personal computer mouse with an optical sensor. Alternatively or additionally, the transducer is tilted at an angle other than perpendicular to the skin surface generally towards or away from the direction in which the transducer is translated. The transducer is then translated while maintaining the angle. Motion to or from the transducer is measured, and a component of the motion measured while the transducer is maintained at an angle is parallel to the direction of translation. The component of motion is angle corrected and used to determine a distance of travel. | 01-08-2009 |
| 20100022884 | SPECTRAL DOPPLER WITH MULTIPLE SPATIALLY DISTINCT GATES - Spatially distinct Spectral Doppler information is displayed. A spectrum is determined for each of a plurality of spatial locations, such as associated with different receive beams. Given a plurality of spectra at different spatial locations, an image may be generated as a function of the spectra. For example, a two-dimensional image has display values for different pixels or locations derived from one or more characteristics of the spectra, such as the maximum velocity with energy above a threshold for each location. As another example, the spectrum from the set of spectra with the highest maximum velocity is selected for generating a spectral strip display. | 01-28-2010 |
Paul Donald Freiburger, Seattle, WA US
| Patent application number | Description | Published |
|---|---|---|
| 20090036749 | Multi-volume rendering of single mode data in medical diagnostic imaging - Separate renderings are performed for data of a same medical imaging mode. The data is processed differently prior to rendering and/or rendered differently to enhance desired image information. For example, a same set of ultrasound B-mode data is rendered with opacity rendering and with maximum intensity projection or surface rendering. The surface or maximum intensity projection highlights strong transitions associated with bones. The opacity rendering maintains tissue information. Different sets of B-mode data may be separately rendered, such as one set processed to emphasize contrast agent response and another set processed to emphasize tissue. The separate renderings are aligned and combined. The combined rendering is output as an image. | 02-05-2009 |
Paul Donald Freiburger, Issaquah, WA US
| Patent application number | Description | Published |
|---|---|---|
| 20080242995 | AUTOMATIC OPTIMIZATION IN SPECTRAL DOPPLER ULTRASOUND IMAGING - Methods and systems for automatic optimization in spectral Doppler ultrasound imaging are provided. The value for one or more spectral Doppler parameter is optimized using numerical optimization rather than predefined sampling. Various spectral Doppler parameters are set, such as a position of the gate, gate size, transmit frequency, filter settings, Doppler gain, beamline orientation or angle of intersection between the gate position and the scan line, aperture size, or other spectral Doppler transmit or receive parameters effecting the spectral Doppler imaging. A processor automatically calculates a setting or value for one or more of the spectral Doppler parameters, resulting in more objective optimization than provided by a user setting. | 10-02-2008 |