Abstract: Sparse tracking is used in acoustic radiation force impulse imaging. The tracking is performed sparsely. The displacements are measured only one or a few times for each receive line. While this may result in insufficient information to determine the displacement phase shift and/or maximum displacement over time, the resulting displacement samples for different receive lines as a function of time may be used together to estimate the velocity, such as with a Radon transform. The estimation may be less susceptible to noise from the scarcity of displacement samples by using compressive sensing.

Abstract: Sparse tracking is used in acoustic radiation force impulse imaging. The tracking is performed sparsely. The displacements are measured only one or a few times for each receive line. While this may result in insufficient information to determine the displacement phase shift and/or maximum displacement over time, the resulting displacement samples for different receive lines as a function of time may be used together to estimate the velocity, such as with a Radon transform. The estimation may be less susceptible to noise from the scarcity of displacement samples by using compressive sensing.

Abstract: Sparse tracking is used in acoustic radiation force impulse imaging. The tracking is performed sparsely. The displacements are measured only one or a few times for each receive line. While this may result in insufficient information to determine the displacement phase shift and/or maximum displacement over time, the resulting displacement samples for different receive lines as a function of time may be used together to estimate the velocity, such as with a Radon transform. The estimation may be less susceptible to noise from the scarcity of displacement samples by using compressive sensing.

Abstract: High intensity focused ultrasound (HIFU) is registered with imaging. The effects of transmission from a HIFU transducer, such as a rise in temperature, are detected by a separate imaging system. By using multiple transmissions, a plurality of locations of the transmissions from the HIFU transducer are determined within the imaging system coordinates. A transform relating the imaging system coordinates to the HIFU transducer coordinates is determined from the detected effects. The transform may be used to relate locations indicated in images of the imaging system with coordinates of the HIFU transducer for application of HIFU. The imaging system may not have to scan the HIFU transducer or fiducials and a fixed relationship may not be needed.

Abstract: Sparse tracking is used in acoustic radiation force impulse imaging. The tracking is performed sparsely. The displacements are measured only one or a few times for each receive line. While this may result in insufficient information to determine the displacement phase shift and/or maximum displacement over time, the resulting displacement samples for different receive lines as a function of time may be used together to estimate the velocity, such as with a Radon transform. The estimation may be less susceptible to noise from the scarcity of displacement samples by using compressive sensing.

Abstract: Motion tracking is performed with a thermal pattern within a patient. A pattern of different temperature is created in tissue, such as warming up tissue in a checkerboard pattern. The temperature pattern is used over time to track motion of the tissue. The tracked motion may be used to treat the tissue throughout at least part of a periodic cycle.

Abstract: Scan timing of contrast agent study is provided. Ultrasound is used to determine timing of contrast agent inflow and/or outflow. The timing based on the ultrasound scanning controls scanning for MR or CT imaging. The MR or CT contrast agent imaging for MR or CT contrast agents may be synchronized using the ultrasound contrast agent flow.

Abstract: Shear wave imaging is provided in medical diagnostic ultrasound. The generation of a shear wave with acoustic energy forms a pseudo shear wave (an apparent wave) traveling towards the transducer. Transmission and reception along a single line may be used to detect the pseudo shear wave traveling towards the transducer. The shear velocity or characteristic may be determined without reception along multiple laterally spaced scan lines. One transmission to generate the shear wave may be used. With multi-beam receive or without, calculating shear velocity from along a single line allows rapid determination.

Abstract: Motion tracking is performed with a thermal pattern within a patient. A pattern of different temperature is created in tissue, such as warming up tissue in a checkerboard pattern. The temperature pattern is used over time to track motion of the tissue. The tracked motion may be used to treat the tissue throughout at least part of a periodic cycle.

Abstract: Therapy control and/or monitoring is performed with an ultrasound scanner. The ultrasound scanner detects temperature to monitor therapy, and perform HIFU beam location refocusing of the therapy system based on the temperature. The monitoring is synchronized with the therapy using a trigger output of the ultrasound scanner. The trigger output responds to a scan sequence of the ultrasound scanner. To meet a given therapy plan, the scan sequence is customized, resulting in the customized trigger sequence. Three dimensional or multi-planar reconstruction rendering is used to represent temperature for monitoring feedback. The temperature at locations not being treated may be monitored. If the temperature has an undesired characteristic (e.g., too high), then the therapy is controlled by ceasing, at least temporarily.

Abstract: Skin temperature is measured during medical ultrasound therapy. The temperature of a standoff between the transducer and skin is monitored. The temperature of the standoff relates to the skin temperature. The temperature, whether skin or standoff temperature, is used to control the therapy. The temperature feedback may allow for increased or optimize therapy levels.

Abstract: Scan timing of contrast agent study is provided. Ultrasound is used to determine timing of contrast agent inflow and/or outflow. The timing based on the ultrasound scanning controls scanning for MR or CT imaging. The MR or CT contrast agent imaging for MR or CT contrast agents may be synchronized using the ultrasound contrast agent flow.

Abstract: High intensity focused ultrasound (HIFU) is registered with imaging. The effects of transmission from a HIFU transducer, such as a rise in temperature, are detected by a separate imaging system. By using multiple transmissions, a plurality of locations of the transmissions from the HIFU transducer are determined within the imaging system coordinates. A transform relating the imaging system coordinates to the HIFU transducer coordinates is determined from the detected effects. The transform may be used to relate locations indicated in images of the imaging system with coordinates of the HIFU transducer for application of HIFU. The imaging system may not have to scan the HIFU transducer or fiducials and a fixed relationship may not be needed.

Abstract: Shear wave imaging is provided in medical diagnostic ultrasound. The generation of a shear wave with acoustic energy forms a pseudo shear wave (an apparent wave) traveling towards the transducer. Transmission and reception along a single line may be used to detect the pseudo shear wave traveling towards the transducer. The shear velocity or characteristic may be determined without reception along multiple laterally spaced scan lines. One transmission to generate the shear wave may be used. With multi-beam receive or without, calculating shear velocity from along a single line allows rapid determination.