30 results about "Quantitative ultrasound" patented technology

A thin film piezoelectric material employs a metallic backer plate to provide high output, non-resonant ultrasonic transmissions suitable for quantitative ultrasonic measurement and / or imaging.

Methods and systems for displaying ultrasound data are provided. One method (50) includes acquiring (5) ultrasound image data and physiological monitoring data during an ultrasound imaging scan, generating (56) quantitative ultrasound data from the acquired ultrasound image data and correlating (60) the quantitative ultrasound data with the physiological monitoring data. The method also includes displaying (62) the correlated quantitative ultrasound data and physiological monitoring data time aligned on a display.

A method is described for acquiring 3D quantitative ultrasound elastography volumes. A 2D ultrasound transducer scans a volume of tissue through which shear waves are created using an external vibration source, the synchronized measurement of tissue motion within the plane of the ultrasound transducer with the measurement of the transducer location in space, the reconstruction of tissue displacements and / or tissue velocities in time and space over a volume from this synchronized measurement, and the computation of one or several mechanical properties of tissue from this volumetric measurement of displacements. The tissue motion in the plane of the transducer may be measured at a high effective frame rate in the axial direction of the transducer, or in the axial and lateral directions of the transducer. The tissue displacements and / or tissue velocities over the measured volume may be interpolated over a regular grid in order to facilitate computation of mechanical properties.

Systems and methods for classifying tissue using quantitative ultrasound techniques. Parameters are calculated directly from raw echo signal data acquired from a region of interest during an ultrasound scan and used to generate a parameter map. These parameters were calculated after normalizing the echo signal data with reference data to reduce the influence of variations in instrument settings, ultrasound beam diffraction and attenuation effects. First and second order statistical measures are computed from these parametric maps and used to classify the tissue or tissues in the region of interest. Using these systems and methods, organizations can be classified using different classification levels. For example, tissue characterized as malignant cancer can be additionally graded (eg, grade I, II or III).

The invention discloses a high-real-time quantitative ultrasonic detection method based on multi-angle stereo matching. Aiming at a serious restriction bottleneck between the fine quantitative representation capacity and detection instantaneity of defects of existing ultrasonic detection devices, a basic idea of a finite element is firstly introduced to rasterize a to-be-detected test piece, a plurality of ultrasonic transducers distributed in different directions of a space are utilized for sequentially irradiating grid cells, and a shifting relation between the fine quantitative representation capacity of the flexible coordinating defects and the detection instantaneity is realized by utilizing the wavelet-transform-based multi-resolution stereo matching correlation based on the acquisition of multichannel ultrasonic reflection echo signals. By collecting the multi-angle ultrasonic reflection echo signals, the high-real-time quantitative ultrasonic detection method has the advantage of complete carried information amount and is more beneficial to realization of the quantitative detection; by utilizing a basic theory of wavelet transform, the method has multi-resolution and time-frequency domain conjoint analysis capacities and is particularly suitable for time frequency signals such as ultrasonic waves and the like.

The invention discloses a measurement device and a detection method for detecting bone density by using an axial quantitative ultrasonic method in the technical field of medicinal instruments. A shell is fixedly connected with one end of a spring set, the other end of the spring set is connected with a side pad, an arm measurement groove is formed in the upper space of the side pad, and the opposite side of the side pad is provided with two same transmitting probes and a receiving probe; the two transmitting probes and the receiving probe are positioned on the same plane on one side of a partition board, and the bottom end of the receiving probe is connected with a transmission component; and a measured arm is put into the arm measurement groove, the spring set drives the side pad to movehorizontally in the arm measurement groove, a rotating shaft of a step motor drives a screw to rotate so as to drive the receiving probe to move, the two transmitting probes transmit ultrasonic slow wave in turn, and the receiving probe converts the ultrasonic slow wave received twice into electrical signals for subsequent processing. The device and the method avoid the measurement error caused by the thickness of soft tissues on the bone, accurately position the position of the receiving probe, and improve the measurement precision.