X-ray CT apparatus, method, and program

The X-ray CT apparatus generates CTS images by dividing three-dimensional regions and determining central axis points to accurately analyze the internal structure of curved objects, overcoming the limitations of traditional cross-sectional imaging.

JP2026084315APending Publication Date: 2026-05-21SUMITOMO ELECTRIC INDUSTRIES LTD
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
SUMITOMO ELECTRIC INDUSTRIES LTD
Filing Date
2024-11-11
Publication Date
2026-05-21

AI Technical Summary

Technical Problem

X-ray CT scanners struggle to accurately analyze the internal structure of objects that are curved in their longitudinal direction, as the cross-sectional images generated do not accurately represent the object's shape in planes perpendicular to the longitudinal direction, leading to inaccurate analysis.

Method used

An X-ray CT apparatus that generates three-dimensional CT images, divides them into regions representing the object and background, determines central axis points, and creates Curve-Track-Sliced (CTS) images orthogonal to vectors pointing between these points, ensuring accurate representation of cross-sectional regions.

Benefits of technology

Enables high-precision analysis of the internal structure of curved objects by accurately representing cross-sectional areas perpendicular to the longitudinal direction, even when the object is bent.

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Abstract

Even if the object is curved in its longitudinal direction, its internal structure can be analyzed with high precision. [Solution] The X-ray CT apparatus of this disclosure comprises a first generation unit 110, a point cloud determination unit 115, and a second generation unit 120. The first generation unit 110 generates a three-dimensional CT image of the object. The point cloud determination unit 115 determines first to M points (M is a natural number greater than or equal to 2) that represent the central axis of the object. The second generation unit 120 generates CTS images 300_1 to 300_M according to the three-dimensional CT image. The CTS image 300_i (1≦i≦M) is an image representing the cross-sectional region of the object in the i-th plane, which is orthogonal to the i-th vector that points from the i-th point to the j-th point (i≠j, 1≦j≦M) in its neighborhood. The k-th point (2≦k≦M) is located a predetermined distance from the k-1 point in the direction of the k-1 vector.
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