公开(公告)号：US20210407048A1

公开(公告)日：2021-12-30

申请号：US17214970

申请日：2021-03-29

Applicant: Hitachi, Ltd.

Inventor： Chizue TANAKA ,  Yukio KANEKO

IPC: G06T5/00 ,  G16H30/40 ,  G16H30/20 ,  G06T7/00

Abstract: Provided are an image processing apparatus, a medical imaging apparatus, and an image processing program that remove noise from an image having different noise levels depending on regions in the image at a low calculation cost, and enable high quality according to a preference of a reader. A plurality of image generators receive measurement data or a captured image obtained by an image data acquisition apparatus and generate different images for a same imaging range. An image selection and combination unit selects different image regions from a plurality of images generated by the plurality of image generators according to a predetermined region selection pattern, and generates one image by combining the images of the selected image regions.

公开(公告)号：US20180242951A1

公开(公告)日：2018-08-30

申请号：US15758259

申请日：2016-07-05

Applicant: Hitachi, Ltd.

Inventor： Misaki HIROSHIMA ,  Tomohiko TANAKA ,  Chizue TANAKA ,  Teiichiro IKEDA

IPC: A61B8/08 ,  A61B8/14 ,  A61B8/00 ,  G06T7/00

CPC classification number: A61B8/5223 ,  A61B5/7257 ,  A61B8/14 ,  A61B8/145 ,  A61B8/4488 ,  A61B8/469 ,  A61B8/5207 ,  G01S7/52026 ,  G01S7/52036 ,  G01S7/52046 ,  G01S7/52066 ,  G06T7/0012 ,  G06T2207/10132

Abstract: Accuracy of spectrum analysis improves, and further reliability of information indicating tissue characterization of a living organ improves. A computation region, which is a target of frequency spectrum analysis, and a window region are set on a received signal. A plurality of received signals of the window region are weighted and the frequency spectrum analysis is performed on the received signals of the window region after the weighting. The weighting is performed by using weight distribution corresponding to strength distribution generated in the received signals of the window region in a case of assuming that the ultrasound transmitted from the plurality of transducers propagates as waves in the subject, reaches a target region in the subject which corresponds to the computation region, is reflected from the target region, then further propagates as waves in the subject, and reaches the plurality of transducers.