Image area specification device and method, and X-ray image processing device and method

• US 10,083,503 B2
• Filed: 02/24/2016
• Issued: 09/25/2018
• Est. Priority Date: 08/27/2013
• Status: Active Grant

• Current Assignee: Fujifilm Corporation (Fujifilm Holdings Corporation)
• Original Assignee: Fujifilm Corporation (Fujifilm Holdings Corporation)
• Inventors: Nakamura, Keigo, Takahashi, Tomoyuki
• Primary Examiner(s): Bitar, Nancy
• Application Number:
  US15/051,883
• Publication Number:
  US 20160171691A1
• Time in Patent Office: 944 Days
• Field of Search: None
• CPC Class Codes: A61B 6/505 for diagnosis of bone
• CPC Class Codes: A61B 6/5211 involving processing of medical diagnostic data
• CPC Class Codes: G06T 2207/10116 X-ray image
• CPC Class Codes: G06T 2207/20008 Globally adaptive
• CPC Class Codes: G06T 2207/30008 Bone
• CPC Class Codes: G06T 5/40 using histogram techniques
• CPC Class Codes: G06T 5/92 based on global image properties
• CPC Class Codes: G06T 7/0012 Biomedical image inspection
• CPC Class Codes: G16H 50/20 for computer-aided diagnosis, e.g. based on medical expert systems

Abstract

A partial region extraction unit extracts a partial region including a distal portion in the vicinity of a boundary between a subject region including the distal portion and a void region from a radiological image including the distal portion of the human body. A designation region determination unit determines at least one of the void region and the partial region as a designation region for designating the partial region.

Claims

1. A radiological image processing device that designates a region in a radiological image including a distal portion of a human body, comprising:

a memory configured to store instructions; and

a processor configured to execute the stored instructions, which when executed by the processor cause the processor to;

extract a partial region which includes the distal portion and has a predetermined range from a boundary between a subject region and a void region from the radiological image; and

determine at least one of the void region or the region including both the void region and the partial region as a designation region for designating the partial region,

calculate a feature amount which is a concentration of the radiological image based on the partial region when the designation region is designated;

calculate a target concentration which is converted from the feature amount by determining a thickness of the subject region, and

perform image processing such that the calculated feature amount is the calculated target concentration,

wherein, when the designation region is designated on the radiological image being displayed, the partial region is designated.

2. The radiological image processing device according to claim 1,

wherein the processor is further configured to determine the void region and the partial region as the designation region.

3. The radiological image processing device according to claim 1,

wherein the processor is further configured to determine the void region as the designation region.

4. The radiological image processing device according to claim 1, wherein the processor is further configured to:

extract at least one of the subject region and the void region from the radiological image; and

extract the partial region on the basis of at least one of the subject region and the void region.

5. The radiological image processing device according to claim 1, further comprising:

an input interface configured to receive the designation region,

wherein the determining the thickness of the subject region comprises determining a direction in which the radiological image was captured, and

wherein the image processing comprises a gradation process for the radiological image.

6. The radiological image processing device according to claim 3, wherein the processor is further configured to:

extract a bone part region or a soft part region included in the radiological image as an anatomic region from the partial region, and

calculate the feature amount based on the bone part region or the soft part region.

7. A radiological image processing method in which a region in a radiological image including a distal portion of a human body is designated, the method comprising:

extracting, by a processor, a partial region which includes the distal portion and has a predetermined range from a boundary between a subject region and a void region from the radiological image;

determining, by the processor, at least one of the void region or the region including both the void region and the partial region as a designation region for designating the partial region;

calculating, by the processor, a feature amount which is a concentration of the radiological image based on the partial region when the designation region is designated;

calculating, by the processor, a target concentration which is converted from the feature amount by determining a thickness of the subject region, and

performing, by the processor, image processing such that the calculated feature amount is the calculated target concentration,

wherein, when the designation region is designated on the displayed radiological image, the partial image is designated.

8. The method of claim 7, wherein the determining the thickness of the subject region comprises determining a direction in which the radiological image was captured, and

wherein the performing of the image processing comprises a gradation process for the radiological image.

9. A non-transitory recording medium having a program recorded therein that causes a computer to execute a radiological image processing comprising image region designation method that designates a region in a radiological image including a distal portion of a human body recorded therein, the program comprising the procedures of:

extracting a partial region which includes the distal portion and has a predetermined range from a boundary between a subject region and a void region from the radiological image;

determining at least one of the void region or the region including both the void region and the partial region as a designation region for designating the partial region;

calculating a feature amount which is a concentration of the radiological image based on the partial region when the designation region is designated;

calculating a target concentration which is converted from the feature amount by determining a thickness of the subject region, and

perform image processing such that the calculated feature amount is the calculated target concentration,

wherein, when the designation region is designated on the displayed radiological image, the partial region is designated.

10. The non-transitory recording medium according to claim 9, wherein the determining the thickness of the subject region comprises determining a direction in which the radiological image was captured, and

wherein the image processing comprises a gradation process for the radiological image.