Ultrasonic doppler power measurement and display system
First Claim
1. A method of quantitatively measuring Doppler signal intensity in an ultrasonic color power Doppler display comprising the steps of:
- acquiring ultrasonic signals containing Doppler information;
processing said ultrasonic signals to develop a color power Doppler display in which the Doppler power intensity at spatial locations within the display is indicated by different colors;
assigning quantified measures of Doppler power intensity to said different colors;
designating a location in said color power Doppler display at which a Doppler power measurement is to be made; and
displaying the quantified measure assigned to the color corresponding to the displayed color at said location.
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Accused Products
Abstract
An ultrasonic diagnostic imaging system is provided which calibrates and quantifies colors of a color power Doppler display to produce quantified measurements of Doppler power intensity. The colors of a color power Doppler image are divided into discrete colors and each color assigned a quantified measure of the Doppler power intensity indicated by that color. When a user moves a cursor over the image the system compares the color of the pixel where the cursor is located with the range of colors and their quantified measures and produces a quantified measure of the Doppler power intensity at the location of the cursor. A line of such measures across a blood vessel can be used to plot a profile of Doppler power intensity across the vessel, and an index number which is a measure of perfusion in a region of the body is determined from an area of a color power Doppler image.
57 Citations
9 Claims
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1. A method of quantitatively measuring Doppler signal intensity in an ultrasonic color power Doppler display comprising the steps of:
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acquiring ultrasonic signals containing Doppler information; processing said ultrasonic signals to develop a color power Doppler display in which the Doppler power intensity at spatial locations within the display is indicated by different colors; assigning quantified measures of Doppler power intensity to said different colors; designating a location in said color power Doppler display at which a Doppler power measurement is to be made; and displaying the quantified measure assigned to the color corresponding to the displayed color at said location.
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2. A method of determining a Doppler power index for fluid flow in a region of the body which is imaged in a color power Doppler display comprising the steps of:
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acquiring ultrasonic signals containing Doppler information; processing said ultrasonic signals to develop a color power Doppler display in which the Doppler power intensity at spatial locations within the display is indicated by different colors; designating a region of said display for which a Doppler power index is to be measured; and displaying a power index which is a function of the power Doppler intensities displayed within said region. - View Dependent Claims (3)
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4. A method of determining the flow profile of a fluid in a body cavity which is displayed in an ultrasonic color power Doppler display comprising the steps of:
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acquiring ultrasonic signals containing Doppler information; processing said ultrasonic signals to develop a color power Doppler display in which the Doppler power intensity at spatial locations within the display is indicated by different colors; assigning quantified measures of Doppler power intensity to said different colors; designating a region of said color power Doppler display over which a flow profile is to be measured; and displaying a sequence of said quantified measures corresponding to the colors of said designated region. - View Dependent Claims (5, 6)
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7. An ultrasonic diagnostic imaging system for quantitatively measuring Doppler power intensity at selected locations in the body comprising:
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an ultrasonic probe for acquiring ultrasonic signals containing Doppler information; a Doppler signal processor for processing said ultrasonic signals to develop a color power Doppler display of a region of the body in which the Doppler power intensity at spatial locations within the display is indicated by different colors; means for assigning quantified measures of Doppler power intensity to said different colors; a user control for designating a location in said color power Doppler display at which a Doppler power measurement is to be made; and means for displaying the quantified measure assigned to the color corresponding to the displayed color at said location.
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8. An ultrasonic diagnostic imaging system for quantitatively measuring Doppler power in a color power Doppler image of a region of the body of a patient comprising:
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an ultrasonic probe for acquiring ultrasonic signals containing Doppler information; a Doppler signal processor for processing said ultrasonic signals to develop a color power Doppler display of said region of the body in which the Doppler power intensity at spatial locations within the display is indicated by color variations; means for assigning quantified measures of Doppler power to said color variations; a user control for designating a region of said color power Doppler display from which a measurement of Doppler power; and a measurement and display system, responsive to said designation of a region of said color power Doppler display which computes a quantified measure of the Doppler power of said region. - View Dependent Claims (9)
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Specification