Abstract: The present invention provides a method and device for color blood flow frame averaging. In the present invention, whether aliasing occurs to an output blood flow velocity of a previous frame is first determined. If aliasing does occur to the output blood flow velocity of the previous frame, the output blood flow velocity of the previous frame will be moved, and the moved output blood flow velocity of the previous frame is then subjected to the frame averaging. The present invention can improve and eliminate the “shadow” in the output blood flow velocity of the current frame due to velocity aliasing of the previous frame existing in the prior color frame averaging processing, such that the blood flow velocity appears more natural and has a more reasonable distribution.

Abstract: A method for eliminating abnormal blood flow velocities in an ultrasonic imaging system is provided in present invention. The method comprises: receiving signals of blood flow; pre-processing the received signals to generate velocity signs in real time; obtaining a plurality of the velocity signs in a predefined spatial and temporal order, and performing weighted smoothing on the plurality of the velocity signs; determining the direction of blood flow at the pixel to be confirmed according to result of the weighted smoothing. A module for performing above method and a color flow imaging system with such a module are also provided in present invention. The method and apparatus provided by present invention can judge the practical direction of blood flow intelligently by performing spatial-temporal smoothing only on the signs of blood flow velocities, so that the estimation error caused by the system noise,clutter residue, speckle effect and etc. can be corrected.

Abstract: The present invention relates to devices for detecting the presence or absence of a target molecule or substance, compounds which may be employed in such devices and methods of using such compounds. In some embodiments, the compounds are conjugated polyenes.

Abstract: A method and apparatus for frame matching is disclosed. The frame matching includes receiving numbers of frames in first and second input signals within a voice unit. A uniform frame length of the first input signal is then updated to a time sample period of the first input signal divided by the number of frames in the second input signal, when the number of frames in the second input signal is greater than or equal to the number of frames in the first input signal. Otherwise, a uniform frame length of the second input signal is updated to a time sample period of the second input signal divided by the number of frames in the first input signal.