| 摘要 |
In an ultrasonic transducer array used in an ultrasonic diagnosis apparatus, the pitch of transducer elements of peripheral subarrays is made smaller than that of a central subarray. The central transducer elements are adapted for acquiring a tomogram of an object to be examined, and the peripheral transducer elements are adapted for acquiring flow rate information of the object, sound velocity information of tissue of the object or tomographic information using an electronic sector scan.
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