Bone density measuring device
AssigneeHitachi Aloka Medical, Ltd.
InventorsRyutaro Adachi, Yasuo Nakamura, Naoto Kato
Life of this patent
Estimating the term…
Abstract
In image data obtained, the radius and the ulna, and interosseous soft tissue between two bones are identified. A midpoint (Ygk) of the length of the interosseous soft tissue in a Y axis direction in (Xk) coordinates is determined. This midpoint is determined in multiple coordinates, and an approximate straight line of these midpoints is determined and set as a reference line. The foot of the perpendicular from the ulna styloid process to the reference line is set as a reference position. A region of interest is set in a position at a predetermined distance from the reference position along the reference line.
Claims7
1-5. (canceled)
A bone density measuring device comprising:
- an image data capturing unit configured to capture an image including an ulna and a radius by X-ray photography;
- a tissue discrimination unit configured to discriminate between an image portion corresponding to a bone and an image portion corresponding to a soft tissue within image data which are captured;
- a reference line setting unit configured to obtain a direction in which an interosseous soft tissue between the ulna and the radius extends and set a reference line along the direction which is obtained;
- a reference position obtaining unit configured to obtain a reference position which is used as a reference for a measurement position;
- a region of interest setting unit configured to set at least one region of interest in a position at a predetermined distance from the reference position in a direction along the reference line;
- and
- a bone density calculation unit configured to calculate a bone density within the region of interest which is set.
Dependencies are inferred from the claim text.