With the trigger delay angle straggling pattern with a two-dimensional array for ultrasound imaging

摘要

A method and a system (10) for varying a pattern as a function of a control angle for medical imaging with a multidimensional array (12) are provided. Transmission shafts the form of, delay, phase or apodization pattern in addition to decelerations, phases or apodization for focusing, by means of a multidimensional array (12) is used. By applying a periodic variation perpendicular to the control direction, the effects of grid cams be reduced by virtue of the variation of bulges. Along the control direction, no additional offsets is provided, can be provided. These other or no offsets generating smaller disturbance effects together by the cam lobes. The transmission opening is adjusted that they are parallel to a direction of the control of the normal transmission scann via line (28) or of the scanning lines (28) is. The pattern of variation is chosen in such a way that it leads to an amplification or insulation of one or more frequency bands of one or more other frequency bands, such as, for example, an insulation of the second harmonic information from fundamental transmission frequency information.