# US 10,368,814 B2 · Method for cephalometric analysis > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,368,814 B2 - Document ID: US10368814B2 - Status: Granted - Kind: B2 - Application number: 15/395,190 - Filed: 2016-12-30 - Published: 2018-07-05 - Granted: 2019-08-06 - Earliest claimed: 2016-12-30 - Assignees: Carestream Dental Technology Topco Limited - Applicants: Carestream Dental Technology Topco Limited - Inventors: Jean-Marc Inglese; Shoupu Chen; Jacques Faure; Jacques Treil - Web page: https://patentgrep.com/patent/US10368814B2 ## CPC - A61B 6/51: for dentistry - A61B 6/025: {Tomosynthesis} - A61B 6/463: {characterised by displaying multiple images or images and diagnostic data on one display} - A61B 6/5217: {extracting a diagnostic or physiological parameter from medical diagnostic data} - A61B 6/5235: {combining images from the same or different ionising radiation imaging techniques, e.g. PET and CT} - A61C 7/002: {Orthodontic computer assisted systems} - A61C 19/05: for determining occlusion - G06T 7/0012: {Biomedical image inspection} - G06T 2207/10081: Computed x-ray tomography [CT] - G06T 2207/30036: Dental; Teeth - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) - A61C: DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE (non-driven toothbrushes A46B; {tongue scrapers A61B17/24;} preparations for dentistry A61K6/00; preparations for cleaning the teeth or mouth A61K8/00, A61Q11/00) - G06T: IMAGE DATA PROCESSING OR GENERATION, IN GENERAL ## Abstract A method for 3-D cephalometric analysis of a patient, executed at least in part on a computer processor, displays reconstructed volume image data from a computed tomographic scan of a patient's head from at least a first 2-D view and accepts an operator instruction that positions and displays at least one reference mark on the at least the first displayed 2-D view. One or more dentition elements within the mouth of the patient are segmented and cephalometric parameters for the patient computed and displayed according to data from the at least one reference mark and the one or more segmented dentition elements. Using the computed cephalometric parameters, one or more results indicative of maxillofacial asymmetry are computed and a graphical or text display energized to show the computed results indicative of asymmetry. ## Claims ### Claim 1 A method for 3-D cephalometric analysis of a patient, the method executed at least in part on a computer processor and comprising: displaying reconstructed volume image data from a computed tomographic scan of a patient's head from at least a first 2-D view or a 3-D view; accepting an operator instruction that positions and displays at least one reference mark on the at least the first displayed 2-D view or the 3-D view; segmenting one or more dentition elements within the mouth of the patient; computing and displaying a plurality of anatomical cephalometric parameters and a plurality of derived cephalometric parameters for the patient according to data from the at least one reference mark and the one or more segmented dentition elements; computing, using the computed cephalometric parameters, one or more results indicative of maxillofacial asymmetry; and energizing a graphical or text display to show the computed results indicative of maxillofacial asymmetry, where the display includes: a first plurality of entries representing different selected maxillofacial asymmetric anterior posterior relations, maxillofacial asymmetric vertical relations and maxillofacial asymmetric transverse relations, a second plurality of entries representing synthesized maxillofacial asymmetric cumulative anterior posterior condition, synthesized maxillofacial asymmetric cumulative vertical condition, and synthesized maxillofacial asymmetric cumulative transverse condition, which are generated using the first plurality of entries, and a third entry representing a combination of the synthesized maxillofacial asymmetric cumulative anterior posterior condition, the synthesized maxillofacial asymmetric cumulative vertical condition, and the synthesized maxillofacial asymmetric cumulative transverse condition. ### Claim 2 (depends on 1) The method of claim 1 wherein the plurality of cephalometric parameters graphically show asymmetry from a frontal view or a sagittal view. ### Claim 3 (depends on 1) The method of claim 1 further comprising comparing the computed results with previously computed results and displaying a message related to the comparison. ### Claim 4 (depends on 1) The method of claim 1 further comprising displaying one or more of the reference marks on a second 2-D view that is substantially orthogonal to the first 2-D view. ### Claim 5 (depends on 1) The method of claim 1 wherein computing and displaying a plurality of cephalometric parameters comprises generating a three-dimensional framework related to the computed cephalometric parameters. ### Claim 6 (depends on 1) The method of claim 1 where showing the computed results comprises evaluating one or more of the computed results against a value calculated from a sampling of a patient population, and where the at least one reference mark identifies an anatomical feature that is outside the mouth of the patient. ### Claim 7 (depends on 1) The method of claim 1 further comprising generating and displaying a tabular report according to calculations from the computed cephalometric parameters for each of the first plurality of entries, where said each of the first plurality of entries correspond to a one active cell of cells in the tabular report corresponding thereto. ### Claim 8 (depends on 1) The method of claim 1 further comprising displaying a graphical plot that shows the at least one reference mark and the computed results indicative of maxillofacial asymmetry. ### Claim 9 (depends on 8) The method of claim 8 where the displayed graphical plot shows computed results from a sagittal view, where the one or more results are indicative of tooth deviation. ### Claim 10 A logic processor that is configured with encoded instructions for: displaying reconstructed volume image data from a computed tomographic scan of a patient's head from at least a first 2-D view or a 3-D view; segmenting one or more dentition elements within the mouth of the patient; computing and displaying a plurality of anatomical cephalometric parameters and a plurality of derived cephalometric parameters for the patient according to data from at least one maxillofacial reference mark and the one or more segmented dentition elements; computing, using the computed cephalometric parameters, one or more results indicative of maxillofacial asymmetry; and energizing a graphical or text display to show the computed results indicative of asymmetry, energizing a graphical or text display to show the computed results indicative of maxillofacial asymmetry, where the display includes: a first plurality of entries representing different selected maxillofacial asymmetric anterior posterior relations, maxillofacial asymmetric vertical relations and maxillofacial asymmetric transverse relations, and a second plurality of entries representing synthesized maxillofacial asymmetric cumulative anterior posterior condition, synthesized maxillofacial asymmetric cumulative vertical condition, and synthesized maxillofacial asymmetric cumulative transverse condition, which are generated using the first plurality of entries, and a third entry representing a combination of the synthesized maxillofacial asymmetric cumulative anterior posterior condition, the synthesized maxillofacial asymmetric cumulative vertical condition, and the synthesized maxillofacial asymmetric cumulative transverse condition. ### Claim 11 (depends on 10) The logic processor of claim 10 configured for cephalometric parameters using an analysis engine model having a plurality of networks.