Encoded transmission and reception which reduces time side lobe are realized while suppressing increase of circuit scale. Transmission signals corresponding to a composite modulation code sequence composed from two or more modulation code sequences are outputted as transmission signals. A reception means demodulates reception signals stepwise by two or more demodulators. The demodulator can be thereby divided into two or more stages, and therefore with a circuit scale corresponding to the sum of the operation circuit numbers of two or more demodulators, time side lobe reduction effect can be obtained at a level equivalent to that obtainable with a circuit scale corresponding to the product of the operation circuit numbers of two or more demodulators.

Ultrasonic diagnostic apparatus

An ultrasonic diagnostic device comprises a transducer for irradiating ultrasonic waves, a transmitter for driving the transducer, and a plurality of power supplies for supplying a plurality of positive voltages and negative voltages to the transmitter, and the transmitter is provided with a plurality of switches (SW1 to SW4) for selectively connecting the power supplies, and a timing controller for controlling the plurality of switches, and selects the switches to generate a driving pulse The absolute values of the plurality of positive voltages and negative voltages are different from each other This configuration makes it possible to change the amplitude of the driving pulse in a multi-stage manner, providing the ultrasonic diagnostic device which can be achieved with a configuration which is at low cost, and in which both the amount of material and the amount of control are low

Ultrasonic diagnostic device

Methods, apparatus and systems for measuring a thickness of a portion of a multi-layer vessel based on at least one medical diagnostic image frame using an integrated ultrasound device is provided. The method includes for each x-coordinate determining a y-coordinate along an interface between each layer of the vessel including determining a Y coordinate of a center of an intima-media center (IMC) determining the adventitia-media interface Y coordinate, determining the intima-lumen interface Y coordinate, determining for each X coordinate the lumen-intima interface Y coordinate, determining media-adventitia interface Y coordinate, determining a thickness of at least one vessel layer using X and Y coordinates of respective layer interfaces, and outputting the thickness to a display.

Method and apparatus for measuring anatomic structures

A user interface for a sonographic device is disclosed that displays a sonographic image and at least one reference object corresponding to a catheter size. The reference object may be scaled in proportion to the sonographic image. In addition, the user interface may further display a plurality of vertical lines and a plurality of horizontal lines arranged in a grid-like pattern and placed over the sonographic image. The size of both the sonographic image and the at least one reference object may change in proportion to a chosen insertion depth. A display device, a sonographic device and corresponding methods are also disclosed.

User interface and methods for sonographic display device

The present invention relates to a system and method for performing a protocol-driven ultrasound examination for generating an image of moving cardiac structure and blood of a heart. One embodiment comprises a front-end and at least one processor. The front end is arranged to transmit ultrasound waves into the moving cardiac structure and blood, generating received signals in response to the ultrasound waves backscattered from the moving cardiac structure and blood. The at least one processor, responsive to the received signals, acquires at least one image of the structure in at least one of a predetermined order and a predefined protocol, and selects at least one of the acquired images taken along at least one of a given view and study.

Protocol-driven ultrasound examination

A standardized acquisition methodology assists operators to accurately replicate high resolution B-mode ultrasound images obtained over several spaced-apart examinations. The methodology utilizes a split-screen display in which the arterial ultrasound image from an earlier examination is displayed on one side of the screen while a real-time “live” ultrasound image from a current examination is displayed next to the earlier image on the opposite side of the screen. A computerized echo edge recognition and tracking methodology automatically identifies ultrasound echo boundaries of the intima-media complex and automatically extracts IMT and arterial dimension measurements, without introducing human measurement error. Measurement accuracy is enhanced by use of sub-pixel resolution for echo edge boundary definition. Utilizing this methodology, measurement of vascular dimensions, such as carotid arterial IMT and diameter, the coefficient of variation is substantially reduced to values approximating from about 1.0% to about 1.25%. Dynamic material properties of arterial structures are measured in a standardized region in accordance with a standardized methodology in order to promote measurement repeatability.

Howard N. Hodis

Papers

Split-screen display system and standardized methods for ultrasound image acquisition and processing for improved measurements of vascular structures