Surgery – Truss – Pad
Patent
1989-10-19
1991-11-05
Jaworski, Francis
Surgery
Truss
Pad
7386125, A61B 806
Patent
active
050624270
ABSTRACT:
An input device for specifying a first measuring point near an orifice, for example, at the valve port position of the heart on a color Doppler image and a second measuring point on the centerline of an issuing fluid is connected to a blood flow imaging device which is a color Doppler tomograph constituted by combining a sector electronic scanning type ultrasonic diagnostic device and an Doppler system to derive blood flow information and tomographic image (B mode image) information by using a single ultrasonic probe. The blood flow imaging device derives Doppler shift frequencies at the first and second measuring points and supplies the same to a flow-rate calculating circuit. The flow-rate calculating circuit derives flow velocities of the blood at the first and second measuring points and a distance between the first and second measuring points and calculates the flow-rate based on the derived flow velocities and distance. The blood flow information and tomographic image obtained by the blood flow imaging device and the calculating result of the flow-rate calculating circuit are supplied to a display control circuit via a CPU bus and displayed on an display unit under the control of the display control circuit.
REFERENCES:
patent: 4408349 (1983-10-01), Yukawa
patent: 4501279 (1985-02-01), Seo
patent: 4660565 (1987-04-01), Shirasaka
patent: 4790322 (1988-12-01), Iinuma
patent: 4873985 (1989-10-01), Nakajima
M. Sugawara et al., "A Feasible Method of Measuring the Absolute Flow-Rate of a Regurgitation, Shunt, and Stenosed Flow by Color Doppler", Journal of the International Organization for Medical Physics, Physics in Medicine & Biology, vol. 33, Supp. 1 (1988), 356.
Seo Yasutsugu
Sugawara Motoaki
Jaworski Francis
Kabushiki Kaisha Toshiba
Sugawara Motoaki
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