MEDICAL IMAGING SYSTEM, MEDICAL IMAGE PROCESSING APPARATUS, AND COMPUTER-READABLE MEDIUM

• US 20130121556A1
• Filed: 11/05/2012
• Published: 05/16/2013
• Est. Priority Date: 11/11/2011
• Status: Active Grant

• Current Assignee: Konica Minolta Inc.
• Original Assignee: Konica Minolta Medical & Graphic Incorporated (Konica Minolta Inc.)
• Inventors: MATSUMOTO, Hiroaki
• Granted Patent: US 9,117,289 B2
• Time in Patent Office: Days
• US Class Current: 382/132
• CPC Class Codes: A61B 6/50 specially adapted for specific body parts; specially adapted for specific clinical applications
• CPC Class Codes: A61B 6/5264 due to motion
• CPC Class Codes: A61B 6/54 Control of apparatus or devices for radiation diagnosis
• CPC Class Codes: G06T 2207/10116 X-ray image
• CPC Class Codes: G06T 2207/30061 Lung
• CPC Class Codes: G06T 7/0012 Biomedical image inspection
• CPC Class Codes: G06T 7/246 using feature-based methods, e.g. the tracking of corners or segments

Abstract

A medical imaging system includes: an image generating unit which captures an image of a subject and generates a medical image which is a still image; a region extracting unit which extracts a subject region from the medical image and extracts a local region which includes no edge from the subject region; a motion judging unit which extracts high spatial frequency components from the local region extracted by the region extracting unit and judges whether there is any motion in the subject during image capture based on the extracted high spatial frequency components; and a controlling unit which causes an outputting unit to output a judgment result made by the motion judging unit.

Claims

1. A medical imaging system, comprising:

an image generating unit which captures an image of a subject and generates a medical image which is a still image;

a region extracting unit which extracts a subject region from the medical image and extracts a local region which includes no edge from the subject region;

a motion judging unit which extracts high spatial frequency components from the local region extracted by the region extracting unit and judges whether there is any motion in the subject during image capture based on the extracted high spatial frequency components; and

a controlling unit which causes an outputting unit to output a judgment result made by the motion judging unit.

2. The medical imaging system according to claim 1, wherein

the region extracting unit divides the subject region into a plurality of small regions and extracts a plurality of local regions which include no edge from the plurality of small regions, and

the motion judging unit extracts high spatial frequency components from each of the plurality of local regions extracted by the region extracting unit, and judges whether there is any motion in the subject during image capture based on the high spatial frequency components extracted from the plurality of local regions.

3. The medical imaging system according to claim 1, wherein the motion judging unit extracts high spatial frequency components for a plurality of directions and judges whether there is any motion in the subject during image capture based on the extracted high spatial frequency components for the plurality of directions.

4. The medical imaging system according to claim 1, further comprising:

a preview image generating unit which generates a preview image by reducing the medical image; and

a display unit which displays the preview image, wherein

the region extracting unit extracts a subject region from the preview image and extracts the local region which includes no edge from the subject region, wherein

the motion judging unit extracts high spatial frequency components from the local region extracted from the preview image, and judges whether there is any motion in the subject in the medical image based on the extracted high spatial frequency components, and wherein

the controlling unit causes the display unit to display a warning when it is judged by the motion judging unit that there is a motion in the subject in the medical image.

5. The medical imaging system according to claim 1, further comprising:

a preview image generating unit which generates a preview image by reducing the medical image;

a display unit which displays the preview image; and

an image processing unit which executes image processing on the preview image, wherein

the region extracting unit extracts a subject region from a preview image which has been undergone the image processing executed by the image processing unit and extracts the local region which includes no edge from the subject region, wherein

the motion judging unit extracts high spatial frequency components from the local region extracted from the preview image which has been undergone the image processing executed by the image processing unit, and judges whether there is any motion in the subject in the medical image based on the extracted high spatial frequency components, and wherein

the controlling unit causes the display unit to display a warning when it is judged by the motion judging unit that there is a motion in the subject in the medical image.

6. A medical image processing apparatus, comprising:

a region extracting unit which extracts a subject region from a medical image which is a still image obtained by imaging a subject, and extracts a local region which includes no edge from the subject region;

a motion judging unit which extracts high spatial frequency components from the local region extracted by the region extracting unit and judges whether there is a motion in the subject during image capture based on the extracted high spatial frequency components; and

a controlling unit which causes an outputting unit to output a judgment result made by the motion judging unit.

7. A computer-readable medium which makes a computer to function as:

a region extracting unit which extracts a subject region from a medical image which is a still image obtained by imaging a subject, and extracts a local region which includes no edge from the subject region;

a motion judging unit which extracts high spatial frequency components from the local region extracted by the region extracting unit and judges whether there is a motion in the subject based on the extracted high spatial frequency components; and

a controlling unit which causes an outputting unit to output a judgment result made by the motion judging unit.