Blood Flow Extraction Image Forming Device Patent

ChangeBridge: Patent Grants - Diagnosis & Surgery (A61B)

Published March 24th, 2026

Detected March 26th, 2026

Summary

The USPTO has granted patent US12586185B2 to FUJIFILM Corporation for a blood flow extraction image forming device. The patent details a method for creating images that distinguish blood flow from tissue components, utilizing correlation matrix calculations and singular value decomposition.

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What changed

The United States Patent and Trademark Office (USPTO) has issued patent US12586185B2 to FUJIFILM Corporation. This patent covers a novel device and method for forming blood flow extraction images, which are crucial for medical diagnostics and surgical planning. The technology involves sophisticated image processing techniques to isolate blood flow signals from surrounding tissue, enabling clearer visualization for medical professionals.

While this is a patent grant and not a regulatory rule with direct compliance obligations for most entities, it signifies innovation in the medical imaging sector. Companies involved in developing or utilizing advanced medical imaging technology, particularly those in diagnostic and surgical fields, should be aware of this patent. It may impact future product development, licensing, or intellectual property strategies within the medical device industry.

Source document (simplified)

← USPTO Patent Grants

Blood flow extraction image forming device, method of forming blood flow extraction image, and blood flow extraction image forming program

Grant US12586185B2 Kind: B2 Mar 24, 2026

Assignee

FUJIFILM Corporation

Inventors

Hideki Yoshikawa, Kosuke Fujita, Tetsuya Yamada

Abstract

A correlation matrix calculation unit calculates a correlation matrix Rzx for each data element of the frame data. A blood flow luminance image forming unit forms a blood flow extraction filter Pk,N on the basis of an eigenvalue λi of a rank equal to or lower than a first threshold rank, the eigenvalue being obtained by singular value decomposition on the correlation matrix Rzx, and an eigenvector wi, wiH corresponding to the eigenvalue λi and applies the blood flow extraction filter Pk,N to frame data F, therebyto forming a blood flow luminance image Uk,N. A tissue image forming unit forms a tissue image including tissue components on the basis of a signal value of each data element forming the plurality of pieces of the frame data. A blood flow extraction image forming unit subtracts the tissue image from the blood flow luminance image Uk, N, thereby forming a blood flow extraction image Uout.