Image analyzing system and method
View Patent ↗An image analysis system that analyzes an image of an object's organ having an anatomically symmetric shape includes: an image data read means that reads image data of the organ, a memory means that is connected to the image data read means, and stores the read image data, a display means that is connected to the memory means, and displays the image data as an image, a centerline setting means that is connected to the memory means, and sets a centerline of the organ in the image displayed on the display means, a region-of-interest setting means that is connected to the memory means, and uses the centerline to set a plurality of or at least one pair of regions of interest at anatomically symmetric opposite positions in the image of the organ, and an input means that is connected to the region-of-interest setting means, and inputs conditions for setting of the regions of interest in the image.
1. An image analysis method performed by an image processing apparatus to analyze medical-purpose image data corresponding to an image of an object's organ having an anatomically symmetric shape, wherein said image analysis method performed by said image processing apparatus comprises:
(1A) a step of inputting the medical-purpose image data corresponding to the image of the organ;
(1B) a step of generating mask image data which collectively express a mask image corresponding to a region of the organ, based on processing the image data corresponding to the image of the organ;
(1) a step of determining, based on the image data, and designating, a centerline of the organ in the image constituted by the image data;
(2) a step of setting N-1 parting lines based on processing of the mask image data and the centerline designated in the step (1),
wherein N is an integer greater than two, the N-1 parting lines intersect at a barycenter of the mask image corresponding to a region of the organ and form an angle θ·n with the centerline, wherein θ is an angle calculated by dividing 180° by N, and n denotes an integer ranging from 0 to N-1;
(3) a step of setting automatically a plurality, or more than one pair, of regions of interest at symmetrical opposite positions, based on processing of the mask image data obtained in step (1B) and the parting lines set in the step (2);
(4) a step of generating an analytic value of the image data in each of the regions of interest, based on processing of the image data in each of the regions of interest set in the step (3); and
(5) a step of assessing the state of the object according to a degree of a difference in the analytic value between the opposite regions of interest.
2. The image analysis method according to claim 1 , further comprising:
(8) a step of obtaining a position of the barycenter of the mask and a slope of a principal axis of inertia on the basis of the mask indicated in the mask image, wherein:
the mask image is constructed in step (6) by binarizing a region in the image in which the organ is included, and
at the step (1), the centerline is set based on the position of the barycenter and the slope of the principal axis of inertia.
3. An image processing apparatus that analyzes medical-purpose image data corresponding to an image of an object's organ having an anatomically symmetric shape, the image processing apparatus comprising:
an image data reader configured to acquire the medical-purpose image data of the organ;
a memory coupled with the image data reader to receive the medical-purpose image data therefrom and configured to store the medical-purpose image data;
an input device;
a processor coupled with said input device and said memory to respond to input conditions set at the input device and to retrieve the medical-purpose image data from the memory and configured to process the retrieved medical-purpose image data, to generate analytic information by performing:
processing the medical-purpose image data corresponding to the image of the organ to generate mask image data which collectively express a mask image corresponding to a region of the organ;
processing the image data to determine and designate a centerline of the organ in the image constituted by the image data, wherein said anatomical symmetric shape of the object's organ is a shape laterally symmetric with respect to said centerline;
processing the mask image data and the centerline to set N-1 parting lines, wherein N is an integer greater than two, the N-1 parting lines intersect at a barycenter of the mask image corresponding to a region of the organ and form an angle θ·n with the centerline, wherein θ is an angle calculated by dividing 180° by N, and n denotes an integer ranging from 0 to N-1;
processing the mask image data and the parting lines to automatically set a plurality, or more than one pair, of regions of interest at symmetrical opposite positions;
processing the image data in each of the regions of interest to generate an analytic value of the image data in each of the regions of interest; and
assessing the state of the object according to a degree of a difference in the analytic value between the opposite regions of interest; and
a display coupled with the memory to display an image based on the image data from the memory and to display the analytic information corresponding to the object or the organ.