Patent application number | Description | Published |
20080252641 | PROJECTION IMAGE GENERATION APPARATUS AND PROGRAM - When a projection direction or position has been changed by the operation from the outside, the resolution of a projection image in a region of interest on a projection plane is set higher than that of the projection image other than the region of interest. Then, a projection image is generated by dividing, based on the set resolutions, the projection plane into small areas that have different sizes depending on whether an area to be divided is in the region of interest and by calculating the pixel value of each of the small areas from the voxel values of three-dimensional volume data projected onto the respective small areas. After all the pixel values of the small areas are calculated, projection images are generated in such a manner that the resolution of at least the projection image other than the region of interest is reset gradually to a higher value. | 10-16-2008 |
20080252660 | CURVED LINE CORRECTION METHOD, APPARATUS, AND PROGRAM - A curved line correction method is provided, which is used when correcting a curved line displayed on an image display device and formed of a plurality of dots by moving a dot selected from the plurality of dots. The method includes the steps of correcting a portion of the trajectory of the curved line such that the trajectory passes those of the plurality of dots located outside of an adjacent region of the selected dot before the dot is moved and a position of the selected dot after moved, and arranging a plurality of new dots on the corrected portion of the trajectory according to the length thereof. | 10-16-2008 |
20080253630 | IMAGE DISPLAY METHOD, APPARATUS, AND PROGRAM - Extracting a luminal or line-like three-dimensional structure from a three-dimensional image of a target object, then generating a projection image by projecting a portion of the entirety of the three-dimensional structure on a cross-sectional image of the target object intersecting the three-dimensional structure, the portion being a portion located within a range of a predetermined thickness from a cross-section represented by the cross-sectional image or a portion located within a range of a predetermined distance from a position where the three-dimensional structure is intersecting the cross-sectional image, and displaying the generated projection image. | 10-16-2008 |
20080259080 | IMAGE PROCESSING METHOD, APPARATUS, AND PROGRAM - In an image processing method for generating a pseudo three-dimensional image by a volume rendering method in which a pixel value of each pixel on a projection plane on which a three-dimensional image illuminated by an arbitrary light source is projected is determined using a brightness value at each examination point, which is a point on the three-dimensional image sampled along each of a plurality of visual lines connecting an arbitrary viewpoint and each pixel on the projection plane, an illuminance level at each examination point is calculated based on an opacity level at each calculation point, which is a point on the three-dimensional image sampled along each of a plurality of light rays connecting the light source and each examination point, and the brightness value at each examination point is determined based on the calculated illuminance level. | 10-23-2008 |
20080259282 | PROJECTION IMAGE GENERATION APPARATUS, METHOD AND PROGRAM - Projection is performed in such a manner that the same point on a moving internal organ can be constantly observed, thereby improving the accuracy of diagnosis. Motion information about the motion of a projection target between one set of three-dimensional volume data in a group of sets of three-dimensional volume data and a different set of three-dimensional volume data in the group of sets of three-dimensional volume data that was obtained by imaging at a different time from the time of imaging of the one set of three-dimensional volume data is obtained based on the projection target that is present in the one set of three-dimensional volume data and the projection target that is present in the different set of three-dimensional volume data. Then, the viewpoint of projection is moved to a position at which the projection target in the different set of three-dimensional volume data can be projected. | 10-23-2008 |
20080312527 | CARDIAC FUNCTION ANALYSIS APPARATUS, METHOD AND PROGRAM - A position obtainment means obtains the positions of points in the heart of a subject that are present in at least two three-dimensional volume datasets in a group of three-dimensional volume datasets that have been obtained, by imaging the heart of the subject at predetermined time intervals, the points anatomically corresponding to each other, and the at least two three-dimensional volume datasets having been obtained by imaging at different time from each other. A function information obtainment means obtains, based on each of the positions of the points in the heart, which have been obtained by the position obtainment means, function information representing the function of the heart at each point within a three-dimensional space. A display means displays, based on the function information, the motion function of the heart at each of the points in an image that has the shape of the heart of the subject. | 12-18-2008 |
20090034815 | METHOD OF ACQUIRING A DIAGNOSTIC INDEX - A diagnostic index that indicates a condition of obesity of an abdominal area of a human body with improved reliability is provided. For slice images representing two or more cross-sections of an abdominal area of a subject, a ratio of a size of the subcutaneous fat region and the visceral fat region in the abdominal area to the abdominal area is calculated. Then, the ratio obtained for the subject is compared with a corresponding ratio obtained in advance for a human body model to acquire the diagnostic index indicating the condition of obesity of the subject. | 02-05-2009 |
20090096787 | Method and apparatus for processing three dimensional images, and recording medium having a program for processing three dimensional images recorded therein - A pseudo three dimensional image is generated, based on an aspect image and a mapping image generated from an original three dimensional image, using a volume rendering method. A mapping image that represents the functions of a subject is generated using first voxel data that constitute an original three dimensional medical image of the subject. An aspect image is generated using second voxel data that constitute an original three dimensional medical image of the subject. A position matching means causes positions within a heart represented by the mapping image to correspond to positions within a heart represented by the aspect image. An image generating means executes volume rendering based on degrees of opacity within the mapping image, to generate the pseudo three dimensional image. | 04-16-2009 |
20100074487 | CARDIAC FUNCTION DISPLAY APPARATUS AND PROGRAM THEREFOR - Using first voxel data of a three-dimensional medical image obtained by photographing a subject, a functional image representing a function of a heart in at least one position is generated, and using a portion of second voxel data of a three-dimensional medical image obtained by photographing the subject corresponding to an area which includes a blood vessel along an outer myocardial wall of the heart, a morphological image depicting morphology of the blood vessel is generated. Then, the functional image and the morphological image are displayed in a superimposing manner such that at least one position of the heart in the functional image corresponds to at least one position of the heart in the morphological image. | 03-25-2010 |