Ultrasonic diagnostic apparatus and catheter tip part detection method
First Claim
1. An ultrasonic diagnostic apparatus comprising:
- plural ultrasonic transducers arrayed two-dimensionally for transmitting and receiving ultrasonic waves to and from an object;
a catheter signal detection unit configured to acquire a reception signal of a frequency modulated continuous wave from reception signals from at least three of said plural ultrasonic transducers, the frequency modulated continuous wave being transmitted from a catheter inserted in the object;
a position detection unit configured to detect a position of the catheter based on the acquired reception signal of the frequency modulated continuous wave;
a transmission-and-reception unit configured to transmit and receive pulse ultrasonic waves through said plural ultrasonic transducers, the pulse ultrasonic waves each having a frequency band different from that of the frequency modulated continuous wave;
a signal separation unit configured to separate a first component resulting from the frequency modulated continuous wave from a second component resulting from the pulse ultrasonic waves, the first and second components being included in reception signals obtained by said transmission-and-reception unit; and
an ultrasonic image generation unit configured to generate an ultrasonic image using the second component obtained by said signal separation unit.
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Abstract
An ultrasonic diagnostic apparatus includes plural ultrasonic transducers, a catheter signal detection unit and a position detection unit. The plural ultrasonic transducers are arrayed two-dimensionally for transmitting and receiving ultrasonic waves to and from an object. The catheter signal detection unit is configured to acquire a reception signal of a frequency modulated continuous wave from reception signals from at least three of the plural ultrasonic transducers. The frequency modulated continuous wave is transmitted from a catheter inserted in the object. The position detection unit is configured to detect a position of the catheter based on the acquired reception signal of the frequency modulated continuous wave.
14 Citations
24 Claims
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1. An ultrasonic diagnostic apparatus comprising:
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plural ultrasonic transducers arrayed two-dimensionally for transmitting and receiving ultrasonic waves to and from an object; a catheter signal detection unit configured to acquire a reception signal of a frequency modulated continuous wave from reception signals from at least three of said plural ultrasonic transducers, the frequency modulated continuous wave being transmitted from a catheter inserted in the object; a position detection unit configured to detect a position of the catheter based on the acquired reception signal of the frequency modulated continuous wave; a transmission-and-reception unit configured to transmit and receive pulse ultrasonic waves through said plural ultrasonic transducers, the pulse ultrasonic waves each having a frequency band different from that of the frequency modulated continuous wave; a signal separation unit configured to separate a first component resulting from the frequency modulated continuous wave from a second component resulting from the pulse ultrasonic waves, the first and second components being included in reception signals obtained by said transmission-and-reception unit; and an ultrasonic image generation unit configured to generate an ultrasonic image using the second component obtained by said signal separation unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A catheter tip part detection method comprising:
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acquiring a reception signal of a frequency modulated continuous wave from reception signals from at least three of two-dimensionally arrayed plural ultrasonic transducers, the frequency modulated continuous wave being transmitted from a catheter inserted in an object; detecting a position of the catheter based on the acquired reception signal of the frequency modulated continuous wave; transmitting and receiving pulse ultrasonic waves through the plural ultrasonic transducers, the pulse ultrasonic waves each having a frequency band different from that of the frequency modulated continuous wave; separating a first component resulting from the frequency modulated continuous wave from a second component resulting from the pulse ultrasonic waves, the first and second components being included in reception signals obtained by the plural ultrasonic transducers; and generating an ultrasonic image using the separated second component. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification