| 摘要 |
PURPOSE:To accurately display the blood flow at a point of notice, by performing two-dimensional color Doppler on a tomographic surface containing the three-dimensional blood flow vector at the point of notice. CONSTITUTION:The pulse from an oscillator 12 is given to a two-dimensional array vibrator 10 through a three-dimensional focusing means 13 and a transmitting-receiving circuit 11. The reflected wave from an arbitrary point is received by the two-dimensional array vibrator 10 and the output thereof is sent to the display part on and after a DSC 20 through a three-dimensional focusing means 14, an adder 15 and a detector 16. The output of the adder 15 is sent to a Doppler deflection detecting means 18 and the Doppler deflection output is sent to a three-dimensional blood flow vector/dispersion/power operation circuit 19. The three-dimensional blood flow vector of a noticeable point calculated by said operation circuit 19 is sent to a tomographic surface three- dimensional display and operation circuit 26 to be displayed on a three- dimensional display CRT 27. |
