Medical system and method for providing measurement information using three-dimensional caliper

• US 9,220,441 B2
• Filed: 12/03/2013
• Issued: 12/29/2015
• Est. Priority Date: 12/04/2012
• Status: Active Grant

• Current Assignee: Samsung Medison Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Medison Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: Kim, Sung-yoon, Lee, Jun-kyo, Yoo, Jun-sang, Kim, Han-jun
• Primary Examiner(s): Nguyen, Phu K
• Application Number:
  US14/095,692
• Publication Number:
  US 20140152654A1
• Time in Patent Office: 756 Days
• Field of Search: 345/419, 382/128, 600/443, 600/547, 606/41, 736/32
• US Class Current: 1/1
• CPC Class Codes: A61B 5/107 Measuring physical dimensions, e.g. size of the entire body or parts thereof
• CPC Class Codes: A61B 5/1072 measuring distances on the body, e.g. measuring length, height or thickness A61B5/1076 takes precedence
• CPC Class Codes: A61B 5/748 Selection of a region of interest, e.g. using a graphics tablet
• CPC Class Codes: A61B 8/465 adapted to display user selection data, e.g. icons or menus
• CPC Class Codes: A61B 8/469 for selection of a region of interest
• CPC Class Codes: A61B 8/483 involving the acquisition of a 3D volume of data
• CPC Class Codes: G01S 15/8993 Three dimensional imaging systems
• CPC Class Codes: G01S 7/52063 Sector scan display
• CPC Class Codes: G01S 7/52073 Production of cursor lines, markers or indicia by electronic means
• CPC Class Codes: G06T 2207/10136 3D ultrasound image
• CPC Class Codes: G06T 2207/20104 Interactive definition of region of interest [ROI]
• CPC Class Codes: G06T 2207/30004 Biomedical image processing
• CPC Class Codes: G06T 7/11 Region-based segmentation

Abstract

Provided are a medical system and a method for providing measurement information by setting a three-dimensional (3D) caliper on a 3D image. The medical system includes: an image data acquisition unit that acquires image data corresponding to a 3D image of a living body including an object; a user input unit that receives user input information; and a processor that generates 3D data by using the image data and the 3D image by using the 3D data, detects 3D geometry information corresponding to a 3D caliper from the 3D data based on the user input information, sets the 3D caliper on the 3D image based on the detected 3D geometry information, and creates measurement information.

Claims

1. A medical system comprising:

an image data acquisition unit that acquires image data corresponding to a three-dimensional (3D) image of a living body including an object;

a user input unit that receives first input information for setting a point; and

a processor that generates 3D data by using the image data, generates the 3D image by using the 3D data, detects 3D geometry information corresponding to a 3D caliper from the 3D data based on the first input information, sets the 3D caliper on the 3D image based on the detected 3D geometry information, and creates measurement information,

wherein the processor sets a virtual plane on the 3D data, sets an observation plane consisting of a plurality of pixels based on the 3D data, detects a pixel corresponding to the point from the observation plane based on the first input information, detects a voxel which is on the virtual plane and corresponds to the pixel in a predetermined direction, and sets 3D geometry information of the detected voxel as 3D geometry information of the point.

2. The medical system of claim 1, wherein the user input unit further receives second input information needed for setting the virtual plane, and

wherein the processor sets the virtual plane based on the second input information.

3. The medical system of claim 2, wherein the user input unit further receives third input information needed for changing a 3D position of the virtual plane, and

wherein the processor changes the 3D position of the virtual plane based on the second input information to place the virtual plane in the 3D data.

4. The medical system of claim 1, wherein the processor projects a virtual ray from the detected pixel onto the 3D data ,and detects the voxel at an intersection of the virtual ray and the virtual plane.

5. The medical system of claim 4, wherein the processor sets a 2D caliper having depth information in a depth direction of the 3D image on the virtual plane as the 3D caliper, based on the 3D geometry information, measures a length of the object by using the 2D caliper to create length information, and creates measurement information including the length information and the depth information.

6. The medical system of claim 1, wherein the processor creates a cross-sectional image corresponding to the virtual plane by using the 3D data, and performs measurement based on the cross sectional image to create measurement information.

7. A method of providing measurement information, the method performed by a processor, the method comprising:

acquiring image data corresponding to a three-dimensional (3D) image of a living body including an object;

creating 3D data by using the image data;

creating the 3D image by using the 3D data;

receiving first input information for setting a point;

detecting 3D geometry information corresponding to a 3D caliper from the 3D data based on the first input information;

setting the 3D caliper on the 3D image based on the detected 3D geometry information to create measurement information;

setting a virtual plane on the 3D data;

setting an observation plane consisting of a plurality of pixels based on the 3D data;

detecting a pixel corresponding to the point on the observation plane based on the first input information;

detecting a voxel which is on the virtual plane and corresponding to the pixel in a predetermined direction; and

setting 3D geometry information of the detected voxel as 3D geometry information of the point.

8. The method of claim 7, further comprising:

receiving second input information needed for setting the virtual plane,

wherein the step of setting the virtual plane on the 3D data comprises setting the virtual plane on the 3D data based on the second input information.

9. The method of claim 8, further comprising:

receiving third input information needed for changing a 3D position of the virtual plane, wherein the detecting of 3D geometry information corresponding to a 3D caliper from the 3D data comprises changing the 3D position of the virtual plane based on the third input information to place the virtual plane in the 3D data.

10. The method of claim 7,

wherein the step of detecting 3D geometry information comprises projecting a virtual ray from the detected pixel onto the 3D data,

and the step of detecting the voxel comprises detecting the voxel at an intersection of the virtual ray and the virtual plane.

11. The method of claim 10, wherein the setting of the 3D caliper on the 3D image based on the detected 3D geometry information to create measurement information comprises:

setting a 2D caliper having depth information in a depth direction of the 3D image on the virtual plane as the 3D caliper, based on the 3D geometry information;

measuring a length of the object by using the 2D caliper to create length information; and

creating measurement information including the length information and the depth information.

12. The method of claim 7, further comprising:

creating a cross-sectional image corresponding to the virtual plane by using the 3D data; and

performing measurement based on the cross-sectional image to create measurement information.