Three-dimensional (3-D) ultrasonography is introduced as a new diagnostic method for soft-tissue lesions. This method is based on the production of absolutely parallel brightness (B)-scan tomographies with constant intervals. After adequate preparation, the sonographic primaries are processed into 3-D graphs by a specialized program called EUCLID-IS. This method promises to be useful in the evaluation of tumor patients as well as in the follow-up examination of these patients. The main advantages of the presented method are the capacity to measure accurately the volume of regions of interest and the excellent visualization of the structures examined.
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