Automated movement detection with audio and visual information
First Claim
1. A method of locating moving tissue, the method comprising:
- transmitting a first and second ultrasound pulse at a first sample volume within an object;
receiving a first echo signal of the first ultrasound pulse from the first sample volume and a second echo signal of the second ultrasound pulse from the first sample volume;
computing by a computing device an estimate of position displacement of the first sample volume from the first and second echo signals, the position displacement being a measure of change of position over time;
comparing by the computing device a characteristic of the estimated position displacement to a predetermined position displacement characteristic indicative of an amount of physical position displacement of moving tissue, the amount of physical position displacement of moving tissue being greater than zero, the predetermined position displacement characteristic comprising position displacement corresponding to a vein or position displacement corresponding to an artery;
determining by the computing device, based on the comparison, whether the first sample volume corresponds to moving tissue;
repeating said transmitting, receiving, computing and determining for a second sample volume, the repeating initiated by the computing device based on the determination for the first sample volume; and
identifying by the computing device the moving tissue as being a specific one of the vein or the artery, the identifying distinguishing a vein as opposed to an artery or the artery as opposed to the vein based on the characteristic of the estimated position displacement over time relative to pulsatility.
2 Assignments
0 Petitions
Accused Products
Abstract
The embodiments contemplate systems and methods for detecting moving tissue within an object. In one such method, a first and second ultrasound pulse are transmitted at a first sample volume within an object. A first echo signal of the first ultrasound pulse is received from the first sample volume and a second echo signal of the second ultrasound pulse is received from the first sample volume. An estimate of position displacement data of the first sample volume is computed from the first and second echo signals, and the estimate of position displacement data is compared to a predetermined position displacement data threshold indicative of moving tissue. A determination is made, based on the comparison, whether the first sample volume corresponds to moving tissue and, based on the determination, the transmitting, receiving, computing and determining is repeated for a second sample volume.
28 Citations
34 Claims
-
1. A method of locating moving tissue, the method comprising:
-
transmitting a first and second ultrasound pulse at a first sample volume within an object; receiving a first echo signal of the first ultrasound pulse from the first sample volume and a second echo signal of the second ultrasound pulse from the first sample volume; computing by a computing device an estimate of position displacement of the first sample volume from the first and second echo signals, the position displacement being a measure of change of position over time; comparing by the computing device a characteristic of the estimated position displacement to a predetermined position displacement characteristic indicative of an amount of physical position displacement of moving tissue, the amount of physical position displacement of moving tissue being greater than zero, the predetermined position displacement characteristic comprising position displacement corresponding to a vein or position displacement corresponding to an artery; determining by the computing device, based on the comparison, whether the first sample volume corresponds to moving tissue; repeating said transmitting, receiving, computing and determining for a second sample volume, the repeating initiated by the computing device based on the determination for the first sample volume; and identifying by the computing device the moving tissue as being a specific one of the vein or the artery, the identifying distinguishing a vein as opposed to an artery or the artery as opposed to the vein based on the characteristic of the estimated position displacement over time relative to pulsatility. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
-
-
20. An ultrasound system comprising:
-
a probe comprising; a transducer that transmits a first and second ultrasound pulse at a first sample volume within an object, and wherein the transducer further receives a first echo signal of the first ultrasound pulse from the first sample volume and a second echo signal of the second ultrasound pulse from the first sample volume; and a main unit comprising a processor configured, for locating a vessel, to; compute an estimate of position displacement of the first sample volume from the first and second echo signals, the position displacement being a measure of change of position over time; compare a characteristic of the estimated position displacement to a predetermined position displacement characteristic indicative of an amount of position displacement of moving tissue, the amount of position displacement of moving tissue being greater than zero, the predetermined position displacement characteristic comprising position displacement corresponding to a vein or position displacement corresponding to an artery; determine, based on the comparison, whether the first sample volume corresponds to moving tissue; initiate, based on the determination for the first sample volume, repeating of said transmitting, receiving, computing and determining for a second sample volume; and determine the vessel as one of the artery or the vein based on the characteristic of the estimated position displacement over time relative to pulsatility. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
-
Specification