Method for the preparation of ultrasonic reflection tomograms and associated device

摘要

The invention relates to a method for the preparation of ultrasonic reflection tomograms and to an associated device. Tomograms from measurements by ultrasound in which every spot of the target area is scanned from every direction and the reflection signals are combined to form a two-dimensional image are usually prepared via the software using correction and filtering methods. The object is to specify a novel method which can be implemented without the use of an expensive digital computer. According to the invention, merely unidimensional filtering in the form of filtering of successively incident echo signals in the time domain is carried out and the echo signals filtered in the time domain are then summed up. The associated device merely contains, in addition to the customary units, a filter (20) for filtering of the echo signals in the time domain, the filter function (F( omega )) of this filter being predeterminable, especially as a function of the scanning movement of the ultrasound pulse shape and the amplitude distribution. The echo signals from different directions are added up in a freely writable image memory (17). <IMAGE>