# US 2014/0152656 A1 · Medical system, medical imaging apparatus, and method of providing three-dimensional marker > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0152656 A1 - Document ID: US20140152656A1 - Status: Published application - Kind: A1 - Application number: 14/096,887 - Filed: 2013-12-04 - Published: 2014-06-05 - Earliest claimed: 2012-12-04 - Assignees: Samsung Medison Co., Ltd. - Applicants: Samsung Medison Co., Ltd. - Inventors: Jun-sang YOO; Sung-yoon KIM; Han-jun KIM; Jun-kyo LEE - Web page: https://patentgrep.com/patent/US20140152656A1 ## CPC - G06T 15/08: Volume rendering - A61B 8/466: {adapted to display 3D data} - A61B 8/469: {for selection of a region of interest} - A61B 8/483: {involving the acquisition of a 3D volume of data} - G01S 7/52063: {Sector scan display} - G01S 7/52073: {Production of cursor lines, markers or indicia by electronic means} - G01S 15/8993: {Three dimensional imaging systems} - G06T 7/11: Region-based segmentation - G06T 7/187: involving region growing; involving region merging; involving connected component labelling - G06T 2207/10136: 3D ultrasound image - G06T 2207/20101: Interactive definition of point of interest, landmark or seed - G06T 2210/41: Medical - G06T: IMAGE DATA PROCESSING OR GENERATION, IN GENERAL - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) - G01S: RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES ## Abstract A medical system, a medical imaging apparatus, and a method of setting a 3-dimensional (3D) marker on a 3D image are provided. The medical imaging apparatus a display unit displaying a 3-dimensional (3D) ultrasound image generated by using 3D data; a user input unit receiving first input information for selecting a predetermined point of the 3D ultrasound image; and a processor detecting 3D geometry information of a 3D marker that corresponds to the predetermined point in the 3D data based on the first input information, and setting the 3D marker on the 3D image based on the 3D geometry information that is detected. ## Claims ### Claim 1 A medical system comprising: an image data obtaining unit obtaining image data that corresponds to a 3-dimensional (3D) image of an object, the object comprising a target object; a user input unit receiving input information; and a processor generating 3D data by using the image data, generating the 3D image by using the 3D data, detecting 3D geometry information that corresponds to a 3D marker in the 3D data based on the input information, and setting the 3D marker on the 3D image based on the 3D geometry information that is detected. ### Claim 2 (depends on 1) The medical system of claim 1, wherein the input information comprises: first input information for setting a point of the 3D image, wherein the point corresponds to the 3D marker; and second input information for selecting the target object. ### Claim 3 (depends on 2) The medical system of claim 2, wherein the processor determines a reference value that corresponds to the target object based on the second input information. ### Claim 4 (depends on 3) The medical system of claim 3, wherein the processer sets an observation plane that is formed of a plurality of pixels, based on the 3D data; detects a pixel which is on the observation plane corresponding to the point set by the first input information; projects a virtual ray from the pixel that is detected to the 3D data; obtains a sampling point and a sampling value of the sampling point by sampling the virtual ray at a predetermined sampling interval; detects, according to the sampling value, a voxel that corresponds to the reference value from the 3D data; and determines 3D geometry information of the point by using 3D geometry information of the voxel that is detected. ### Claim 5 (depends on 4) The medical system of claim 4, wherein the processor cumulatively adds a plurality of sampling values in a proceeding direction of the virtual ray; and determines that a voxel, which has a sum of cumulatively added sampling values that is the first to exceed or be equal to the reference value, is the voxel that corresponds to the reference value. ### Claim 6 (depends on 4) The medical system of claim 4, wherein the processor compares a plurality of sampling values and a predetermined threshold value, and then detects whether any of the plurality of sampling values is greater than or equal to the predetermined threshold value; cumulatively adds the plurality of sampling values that are detected in a proceeding direction of the virtual ray VR; and determines that a voxel, which has a sum of cumulatively added sampling values that is the first to exceed or be equal to the reference value, is the voxel that corresponds to the reference value. ### Claim 7 (depends on 4) The medical system of claim 4, wherein the processor compares a plurality of sampling values and the reference value, and thus detects a sampling value that is the first to exceed or be equal to the reference value, from among the plurality of sample values; and determines that a voxel that corresponds to the sampling value that is detected, is the voxel that corresponds to the reference value from the 3D data. ### Claim 8 (depends on 4) The medical system of claim 4, wherein the processor projects at least two virtual rays that respectively correspond to different angles, from the pixel that is detected. ### Claim 9 (depends on 4) The medical system of claim 4, wherein the processor detects the 3D geometry information by using a perspective ray-casting method. ### Claim 10 (depends on 1) The medical system of claim 1, wherein the input information comprises: first input information for setting a point of the 3D image, wherein the point corresponds to the 3D marker; second input information for selecting the target object; and third input information for setting a reference value for determining a location of the 3D marker in the 3D image in a depth direction. ### Claim 11 (depends on 10) The medical system of claim 10, wherein the processor sets a reference value that corresponds to the target object, based on the second and third input information. ### Claim 12 (depends on 11) The medical system of claim 11, wherein the processor sets an observation plane that is formed of a plurality of pixels, based on the 3D data; detects a pixel on the observation plane which corresponds to the point set by the first input information; projects a virtual ray from the pixel that is detected to the 3D data; obtains a sampling point and a sampling value of the sampling point by sampling the virtual ray at a predetermined sampling interval; detects, according to the sampling value, a voxel that corresponds to the reference value from the 3D data; and determines 3D geometry information of the point by using 3D geometry information of the voxel that is detected. ### Claim 13 (depends on 12) The medical system of claim 12, wherein the processor cumulatively adds a plurality of sampling values in a proceeding direction of the virtual ray; and determines that a voxel, which has a sum of cumulatively added sampling values that is the first to exceed or be equal to the reference value, is the voxel that corresponds to the reference value. ### Claim 14 (depends on 12) The medical system of claim 12, wherein the processor compares a plurality of sampling values and a predetermined threshold value, and then detects whether any of the plurality of sampling values is greater than or equal to the predetermined threshold value; cumulatively adds the plurality of sampling values that are detected in a proceeding direction of the virtual ray VR; and determines that a voxel, which has a sum of cumulatively added sampling values that is the first to exceed or be equal to the reference value, is the voxel that corresponds to the reference value. ### Claim 15 (depends on 12) The medical system of claim 12, wherein the processor compares a plurality of sampling values and the reference value, and thus detects a sampling value that is the first to exceed or be equal to the reference value, from among the plurality of sample values; and determines that a voxel that corresponds to the sampling value that is detected, is the voxel that corresponds to the reference value from the 3D data. ### Claim 16 (depends on 1) The medical system of claim 1, wherein the processor sets first section in the 3D image; generates a sectional image corresponding to the first section by using the 3D data; and sets a 2D marker on the sectional image, based on the 3D geometry information that corresponds to the 3D marker. ### Claim 17 A method of setting a 3D marker, the method comprising: a) obtaining image data that corresponds to a 3-dimensional (3D) image of an object, the object comprising a target object; b) generating 3D data by using the image data; c) generating the 3D image by using the 3D data; d) receiving input information of the user; e) detecting 3D geometry information that corresponds to the 3D marker in the 3D data based on the input information; and f) setting the 3D marker on the 3D image based on the 3D geometry information that is detected. ### Claim 18 A medical imaging apparatus comprising: a display unit displaying a 3-dimensional (3D) ultrasound image generated by using 3D data; a user input unit receiving first input information for selecting a predetermined point of the 3D ultrasound image; and a processor detecting 3D geometry information of a 3D marker that corresponds to the predetermined point in the 3D data based on the first input information, and setting the 3D marker on the 3D image based on the 3D geometry information that is detected. ### Claim 19 (depends on 18) The medical imaging apparatus of claim 18, wherein the processor obtains depth information of the 3D ultrasound image, and renders perspective to the 3D marker by using the depth information. ### Claim 20 (depends on 18) The medical imaging apparatus of claim 18, wherein the display unit displays the 3D marker on the 3D ultrasound image. ### Claim 21 (depends on 18) The medical imaging apparatus of claim 18, the processor sets a predetermined reference value according to portions of an object that is marked by the predetermined point. ### Claim 22 (depends on 21) The medical imaging apparatus of claim 21, wherein the processor sets an observation plane that is formed of a plurality of pixels, based on the 3D data; detects a pixel on the observation plane which corresponds to the point set by the first input information; projects a virtual ray from the pixel that is detected to the 3D data; obtains a sampling point and a sampling value of the sampling point by sampling the virtual ray at a predetermined sampling interval; detects, according to the sampling value, a voxel that corresponds to the reference value from the 3D data; and determines 3D geometry information of the point by using 3D geometry information of the voxel that is detected. ### Claim 23 (depends on 23) The medical imaging apparatus of claim 23, wherein the processor may show a predetermined depth of the 3D marker by using a stereo method.