Ultrasonic diagnosis apparatus

摘要

There is provided an ultrasonic diagnosis apparatus capable of reducing an unnecessary signal component in a reception signal. A sign data array formed of a plurality of sign data items arranged in an element arranging direction is extracted from a plurality of element reception signals having been subjected to delay processing but having not been subjected to summing processing. A factor computing unit computes a first factor indicating a level of sign coherence in the sign data array and a second factor indicating a sign transit density in the sign data array. The factor computing unit then computes a factor (evaluation value) for adjusting gain of the reception signal, based on the first factor and the second factor.

主权项

1. An ultrasonic diagnosis apparatus comprising:
an array transducer which comprises a plurality of transducer elements; a receiving beam former which performs delay processing with respect to a plurality of element reception signals output from the plurality of transducer elements, and which performs summing processing with respect to the plurality of element reception signals having been subjected to the delay processing; a factor computing unit which computes an evaluation value based on a sign data array formed of a plurality of sign data items arranged in a same direction as the plurality of transducer elements, the plurality of sign data items having been extracted from the plurality of element reception signals which have been subjected to the delay processing but which have not been subjected to the summing processing, and the factor computing unit computing the evaluation value based on a first factor and a second factor which are computed from the sign data array; and a gain adjustment unit which adjusts gain of a reception signal having been subjected to the summing processing, by using the evaluation value, wherein the first factor represents a level of sign coherence in the sign data array, and wherein the second factor represents a sign transit density in the sign data array.