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AssigneeAcuson Corporation
InventorsJohn I. Jackson, Randall L. Schlesinger, John W. Allison
Estimating the term…
Accurate tissue motion systems and methods are provided. Motion of the ultrasound transducer is accounted for in estimates at tissue motion. Correcting for transducer motion better isolates localized tissue contractions or expansions, such as motion of the myocardial muscle or fibers. Accurate motion estimation is also provided by determining an angle of motion from the ultrasound data. The angle of motion is used to adjust velocity estimates, providing two-dimensional velocity vectors (i.e. motion estimates comprising motion in at least two dimensions). Movement of tissue is determined by correlating speckle or a feature represented by two different sets of ultrasound data obtained at different times. Additional aspects include tracking the location of a tissue of interest. A characteristic of strain, such as the strain rate or strain, is calculated for the tracked tissue of interest. Ultrasound data associated with different positions relative to the transducer are selected as a function of the tracking and used to determine the characteristic of strain. Motion estimates corrected for transducer motion may also be used to determine a strain or strain rate. In yet another aspect, motion estimates are generated with data from an intra-cardiac transducer array. The characteristic of strain is determined from the motion estimates. Other aspects discussed above may be used with an intra-cardiac transducer array, providing accurate motion analysis based on imaging from within the heart.
A method for providing motion estimates with an ultrasound system, the method comprising the acts of:
A medical diagnostic ultrasound system for providing motion estimates, the system comprising:
A method for providing motion estimates of a target with an ultrasound system, the method comprising the acts of:
A method for providing motion estimates of a target tissue with an ultrasound system, the method comprising the acts of:
A method for providing motion estimates of a target with an ultrasound system, the method comprising the acts of:
A medical diagnostic ultrasound system for providing motion estimates of a target, the system comprising:
A method for providing tissue motion characterization of a target with an ultrasound system, the method comprising the acts of:
A medical diagnostic ultrasound system for providing tissue motion characterization of a target, the system comprising:
A method for providing a characteristic of strain with an ultrasound system, the method comprising the acts of:
A medical diagnostic ultrasound system for providing a characteristic of strain, the system comprising:
A method for accurately estimating velocity with a medical diagnostic ultrasound system, the method comprising the acts of:
The method of claim 51 wherein (b) comprises tracking the tissue region as a function of speckle or a feature represented by ultrasound data.
Dependencies are inferred from the claim text.