Blood vessel image processing apparatus, blood vessel image processing program, and blood vessel image processing method

Abstract

The invention provides a blood vessel image processing apparatus, blood vessel image processing program, and blood vessel image processing method. [Problem] To delete an abnormal protrusion region from a three-dimensional image of a blood vessel. On the basis of three-dimensional blood vessel data representing the three-dimensional shape of the blood vessel, this control apparatus 102 identifies center lines of the blood vessel, identifies a center line of a protruding portion of the blood vessel from among the center lines, and identifies a center line that branches off from the center line of the protruding portion. Then, for three-dimensional blood vessel data of the blood vessel corresponding to the branching center line, the control apparatus 102 defines a cylindrical coordinate system with the circumferential direction of the blood vessel from the center line, the radial direction of the blood vessel from the center line, and the direction of the center line as coordinate axes, and converts blood vessel data expressed in the cylindrical coordinate system into blood vessel data in an orthogonal coordinate system. In the blood vessel data in the orthogonal coordinate system, the control apparatus 102 uses a coordinate value along the radial-direction coordinate axis for a first coordinate value along the center-line-direction coordinate axis and a coordinate value along theradial-direction coordinate axis for a second coordinate value along the center-line-direction coordinate axis to interpolate coordinate values along the radial-direction coordinate axis from the first coordinate value to the second coordinate value, and converts the resulting blood vessel data in the orthogonal coordinate system into blood vessel data in the cylindrical coordinate system.

Description

technical field [0001] The invention relates to a blood vessel image processing device, a blood vessel image processing program and a blood vessel image processing method. Background technique [0002] An aneurysm diagnosis assisting device as described below is known. In this aneurysm diagnosis assisting device, the center line data is generated by starting from a reference point set inside the cerebral artery region on the three-dimensional image data, and the normal cerebral artery region is divided based on the continuity of the generated center line data The cerebral aneurysm is extracted by separating it from the cerebral aneurysm area (see Patent Document 1). [0003] Patent Document 1: Japanese Patent Laid-Open Publication No. 2012-110444 [0004] When resecting a cerebral aneurysm, it is preferable to accurately grasp the shape of the normal main blood vessel in advance. However, in the existing aneurysm diagnosis aids, although a cerebral aneurysm in the cerebra...

AI Technical Summary

Problems solved by technology

However, in the existing aneurysm diagnosis aids, although the cerebral aneurysm in the cerebral artery region can be extracted and identified, no research has been conducted on the technique for identifying the shape of the normal main blood vessel.

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