US 9,177,373 B2 · Sample point-based, blob-like, closed-surface delineation approach

Abstract

A method, system, computer program product, and computer readable media for a semi-automated surface extraction approach to delineating an object of interest (OOI) from 3-D medical image data sets. This approach is imaging modality independent and results in enhanced displays of blob-like anatomies, including internal organs (e.g., cardiac chambers, liver) or disease processes (e.g., tumor masses). In an embodiment of the method: (I) the user provides multiple representative points located on the surface of the OOI using a Multi-Planar Reconstruction (MPR) tool; (2) those Cartesian points are translated into polar coordinates (each 3-D point is represented via two angles and a height), which uniquely define the surface points for a radial object, (3) a Radial-Basis Function (RBF) interpolator, with a Thin Plate Spline (TPS) radial function, finds the height function for the polar domain, and (4) polar domain representation of the OOI surface is converted back to Cartesian coordinates.

Claims20

Dependent claims

A system for surface extraction based on delineation of an object from a data set, the system comprising:

a storage adapted to store software instructions for performing a method of surface extraction based on delineation of an object from a data set;
and
a surface-fitting module coupled to the storage and adapted to execute the software instructions and perform operations including:
receiving a series of user selected reference points related to an object in a 3-D image data set;
generating a reference set comprising the user selected reference points, the reference set being generated within a first coordinate system;
converting the generated reference set from the first coordinate system to a second coordinate system;
calculating spatial parameters using the converted reference set;
converting the calculated spatial parameters from the second coordinate system to the first coordinate system;
and
supplying the converted calculated spatial parameters delineating a surface of the object in the 3-D image data set as output.

7 more elements

A method of surface extraction based on delineation of an object from an image data set, the method comprising:

receiving a series of user selected reference points related to an object in a 3-D image data set;
generating a reference set comprising the user selected reference points, the reference set being generated within a first coordinate system;
converting the generated reference set from the first coordinate system to a second coordinate system;
calculating spatial parameters using the converted reference set;
converting the calculated spatial parameters from the second coordinate system to the first coordinate system;
and
supplying the converted calculated spatial parameters delineating a surface of the object in the 3-D image data set as output.

4 more elements

Dependencies are inferred from the claim text.

Sample point-based, blob-like, closed-surface delineation approach

Life of this patent

Sample point-based, blob-like, closed-surface delineation approach

Life of this patent

Abstract

Claims20