| 摘要 |
PROBLEM TO BE SOLVED: To provide a bloodstream measuring instrument which surely measures the bloodstream at object blood vessel even a subject changes position and moves, and effective for prevention and early detection of blood vessel disease. SOLUTION: A plurality of oscillation elements of an ultrasonic probe 1 are arrayed two dimensionally in not less than two rows and two columns, and at least one column 1a of the oscillation element has a blood vessel position measuring means 2. By the blood vessel position measuring means 2, another row 1b of the oscillation elements controls the position of ultrasonic beam irradiation and detecting time variably, and by the above, it is constituted so as to measure only the bloodstream information in blood vessel.
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