VOLUME COMPUTED TOMOGRAPHY METHOD FOR ANATOMICAL OBJECTS IN MEDICAL IMAGING
Publication Date: 2005-Apr-08
The IP.com Prior Art Database
In an embodiment, the method includes loading an axial view of the tomography data, and selecting an overlay shape-based structural information in a blended view of the axial slice view, wherein the blending weights and blending colors (coded to shapes) are user selectable. In an embodiment, an image of axial slice view and a shape based volume rendering is displayed side-by-side. Furthermore, the user is able to select the color scheme for cylindrical vs spherical anatomical shapes.
FIELD OF THE INVENTION
 This invention relates generally, to computed tomography (CT), and more particularly, to a volume computed tomography (VCT) method in medical imaging.
BACKGROUND OF THE INEVENTION
 Generally, visualization of anatomical data acquired by imaging devices generating 3D data, is typically handled by volume rendering of intensity and/or density values (HU) of the anatomical data. Many clinical applications are based on 3D visualization of volumetric data. Examples of clinical applications include advanced lung analysis (
ADA), advanced vessel analysis, cardiac, CT colonography (CTC), etc. These clinical applications rely on the values of the image data (intensity or density) to display 3D rendering of anatomies using thresholding for identification from the remaining data.
 Some of these clinical applications are used routinely to screen for cancer in the form of tumors. Radiologists search for nodules and polyps in the lung and colon using ALA and CTC. Lung Cancer and Colon Cancer are the first and third leading cause of cancer related mortality in the US with estimated 175000 and 57000 deaths in 2003. Many references in the literature point to better patient management from earlier detection.
 Radiologists currently detect nodules in the lung by viewing the axial slices of the chest. This is time consuming and is getting more so with the explosion of CT slices. Detection is followed by an analysis for characterization of the nodule with the help of ALA segmentation, volume measurement and reporting tools.
 Therefore, there exists a need for a VCT method for anatomical objects in medical imaging, wherein the method consumes substantially less time without substantial variability in detection and sensitivity issues.
SUMMARY OF THE INVENTION
 In one embodiment, a volume computed tomography (VCT) method in medical imaging includes loading an axial view of the tomography data, and selecting an overlay shape-based structural information in a blended view of the axial slice view, wherein the blending weights and blending colors (coded to shapes) are user selectable.
 In another embodiment, an image of axial slice view and a shape based volume rendering is displayed side-by-side, wherein the user is able to select the color scheme for cylindrical vs spherical anatomical shapes.
BRIEF DESCRIPTION OF THE DRAWINGS
 FIG. 1 shows a blended view of an axial slice according to one embodiment of this invention.
 FIG. 2 shows an example of the visualization method of a spherical volume according to one embodiments of this invention.
 FIG. 3 shows a vessel-subtracted view of a lung highlighting the solitary pulmonary nodule, according to one embodiment of this invention.
DETAILED DESCRIPTION OF THE INVENTION
 Various embodiments of this invention provide a volume co...