DEVICE, SYSTEM AND METHOD TO MEASURE ABDOMINAL AORTIC ANEURYSM DIAMETER

• US 20100036242A1
• Filed: 08/07/2009
• Published: 02/11/2010
• Est. Priority Date: 05/16/2007
• Status: Active Grant

• Current Assignee: Verathon Incorporated (Roper Technologies, Inc.)
• Original Assignee: Verathon Incorporated (Roper Technologies, Inc.)
• Inventors: McMorrow, Gerald, Yuk, Jongtae
• Granted Patent: US 8,133,181 B2
• Time in Patent Office: Days
• US Class Current: 600/437
• CPC Class Codes: A61B 5/02014 Determining aneurysm
• CPC Class Codes: A61B 5/1075 for measuring dimensions by non-invasive methods, e.g. for determining thickness of tissue layer A61B8/0858 takes precedence
• CPC Class Codes: A61B 8/0858 involving measuring tissue layers, e.g. skin, interfaces
• CPC Class Codes: A61B 8/4455 Features of the external shape of the probe, e.g. ergonomic aspects
• CPC Class Codes: G01S 7/52026 Extracting wanted echo signals Doppler systems G01S15/50; Doppler short range imaging systems G01S15/8979
• CPC Class Codes: G01S 7/52038 involving non-linear properties of the propagation medium or of the reflective target
• CPC Class Codes: G01S 7/52082 involving a modular construction, e.g. a computer with short range imaging equipment modular ultrasonic medical diagnostic devices A61B8/4411
• CPC Class Codes: G01S 7/52098 related to workflow protocols
• CPC Class Codes: G06T 2207/10132 Ultrasound image
• CPC Class Codes: G06T 2207/30101 Blood vessel; Artery; Vein; Vascular
• CPC Class Codes: G06T 7/0012 Biomedical image inspection
• CPC Class Codes: G06T 7/12 Edge-based segmentation
• CPC Class Codes: G06T 7/62 of area, perimeter, diameter or volume

Abstract

Systems, methods, and ultrasound transceivers equipped and configured to execute analysis and extract ultrasound information related to an abdominal aortic aneurysm of a subject are described. The methods utilize algorithms to establish improved targeting of the abdominal aortic aneurysm within a region-of-interest. The targeting algorithms may be optimally applied to provide the user with real-time feedback and orientation guidance for positioning the transceiver. Additional methods utilize diameter conversion algorithms to establish the diameter of the abdominal aortic aneurysm based on conversion of the volume measurement and limited segmentation within a targeted region-of-interest of the aorta.

Claims

1. A system to detect an abdominal aortic aneurysm in a region of interest comprising:

an ultrasound transceiver positioned to deliver ultrasound energy and receive echoes of the ultrasound energy across a plurality of scan planes;

a processing device configured to signal process the received echoes and characterize detected signals across the plurality of scan plans, wherein a percentage of availability of scan planes scanned is calculated based on echos received from scan planes;

a display configured to present a visual depiction of the percentage of availability of the region of interest contained in a plurality of scan planes; and

a display configured to present positioning information of the ultrasound transceiver based on the visual depiction of the percentage of availability.

2. The system of claim 1, wherein the processing device guides a user to position the ultrasound transceiver towards regions of interest where the calculated percentage of availability in a plurality of scanlines is 75-100% availability.

3. The system of claim 1, wherein the processing device includes at least one of a C-mode component, a B-mode component, and an A-mode component.

4. A system for abdominal aortic aneurysm evaluation and monitoring in a region of interest of an abdominal aorta, comprising:

a hand-held data collection device which comprises;

at least one ultrasound transceiver to deliver ultrasound energy and receive echoes of the ultrasound energy across a plurality of scan planes for obtaining three-dimensional ultrasound scan information;

a display means for indicating positioning information received from the ultrasound transceiver at a first measured location of the abdominal aorta, wherein the display is a visual depiction of a calculated percentage availability of the first measured location;

a guide means for guiding a user to position the ultrasound transceiver over a region of interest of the aorta based on the calculated percentage availability;

a processor for converting the received scan plane information about the region of interest obtained from the transceiver;

a processor for determining aorta volume information from the converted scan plan information; and

a calculation circuit for calculating the diameter of the aorta at the region of interest from the aorta volume information.

5. The system of claim 4, wherein the guide means guides the user to position the ultrasound transceiver towards regions of interest where the calculated percentage of availability contained in a plurality of scans planes is 75-100% availability.

6. A method to detect and measure an abdominal aortic aneurysm comprising:

transmitting ultrasound energy to the abdominal aorta;

collecting ultrasound echoes returning from the abdominal aorta;

generating signals from the ultrasound echoes;

identifying fundamental signals from the generated signals;

processing the fundamental signals using algorithms designed for fundamental signals;

presenting an image of a region of interest of the abdominal aorta;

calculating the volume of the abdominal aorta; and

calculating the diameter of the abdominal aorta from the calculated volume of the abdominal aorta.

7. The method of claim 6, wherein a guide means guides the user to position the ultrasound transceiver to at least one position to measure the volume of the abdominal aorta.

8. Computer readable media having instructions to execute a method to detect and measure an abdominal aortic aneurysm, comprising the steps of:

transmitting ultrasound energy to the abdominal aorta;

collecting ultrasound echoes returning from the abdominal aorta;

generating signals from the ultrasound echoes;

identifying fundamental signals from the generated signals;

processing the fundamental using algorithms designed for fundamental signals;

presenting an image of the abdominal aorta;

calculating measurements of the volume of the abdominal aorta; and

calculating measurements of the diameter of the abdominal aorta from the calculated volume of the abdominal aorta.

9. The computer readable media of claim 8, wherein the computer readable media further comprise instructions to execute the steps of

comparing fundamental signals returning from non available regions from available regions and calculating percentage of availability;

presenting an image of non available regions and available regions to a user based on the calculated percentage of availibilty; and

indicating to the user a position for an ultrasound transmitting device wherein the percentage of availability is maximized.