Gary E. Macleod

Ultrasound image display by combining enhanced flow imaging in B-mode and color flow mode

An ultrasound system (1) acquires data using a gray scale mode of operation and a color flow mode of operation. A transducer (10) generates receive signals in response to echo ultrasound waves received from a subject (S) being studied. A gray scale receive channel (9G) generates gray scale data representing movement of portions of the subject, in particular that of blood flow or contrast agents in blood or tissue. A color flow receive channel (9C) generates color flow data (e.g., either power data or velocity data) also representing movement of portions of the subject. A processor (30) combines the gray scale flow data with the color flow data and displays the result on a display monitor (19) such that moving portions of the subject are displayed with a colored gray scale image.

Ultrasound color flow display optimization by adjusting dynamic range including remote services over a network

An ultrasound imaging system generating color flow signals in response to ultrasound signals backscattered from a subject under study includes an apparatus for displaying images in response to the color flow signals. The apparatus includes a memory connected to store first memory values in response to the color flow signals; a logic unit connected to determine a dynamic range compression scheme based on an analysis of the first memory values and to generate second memory values based on the dynamic range compression scheme; a display connected to display a color flow image in response to the second memory values; and a network connectivity module coupled to the system to provide communication with a remote facility over a network, the remote facility providing remote services.

Perioral biomechanics and its relation to labial motor control

Data summarizing the biomechanical nature of the labial system will be presented. The following topics will be discussed: the transfer function of the perioral tissue; spectral analysis of muscle fatigue; isometric and isotonic analysis of the contractal properties of muscle Obicularis Oris (mOO); and the describing function relating EMG and the contractile dynamics of mOO. The data will be discussed with regard to their implications for motor control of the labial system of speech production. [Research supported by NINCDS grant.]

Ultrasound b/color priority threshold calculation

An ultrasound color flow imaging system is programmed to optimize display images on a display monitor (18) by automatically adjusting a threshold. B-mode data corresponding to valid color data is subjected to statistical analysis including mean and standard deviation (S3). The threshold is computed according to mean plus k (standard deviation), where k preferably is based on a linear regression equation.