IP Library Granted Patent US 12,062,170
Granted Patent B2
US 12,062,170 · App. 17/215,315 · Granted Aug 13, 2024

System and method for classifying a tooth condition based on landmarked anthropomorphic measurements

Inventors: Matvey Dmitrievich Ezhov (Moscow, RU); Vladimir Leonidovich Aleksandrovskiy (Moscow, RU); Evgeny Sergeevich Shumilov (Moscow, RU); Maxim Gusarev (Tiraspol, MD); Maria Golitsyna (Moscow, RU)
Assignee: Diagnocat Inc
G06T7/0014G06T3/4007G06T2207/20081G06T2207/20084G06T2207/20101G06T2207/30036
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Quick Facts
Patent No.
US 12,062,170
App. No.
17/215,315
Granted
Aug 13, 2024
Kind
B2
Abstract

Disclosed is a system and method for classifying a tooth condition, comprising: a localization layer; a classification layer; a processor; a non-transitory storage element coupled to the processor; encoded instructions stored in the non-transitory storage element, wherein the encoded instructions when implemented by the processor, configure the automated parsing pipeline system to: localize a present anatomical landmark in a patient's oral or maxillofacial region depicted in a parsed image frame by the localization layer, said landmark comprising of a feature or features with anatomical or pathological significance; and classify a dental or maxillofacial condition based on measuring any kind of relation between two or more features within and/or between landmarks by the classification layer.

Claims (32)

1. A method for classifying a dental or maxillofacial condition, said method comprising the steps of:

parsing a received volumetric image into at least a single image frame;

localizing a landmark in a patient's dental or maxillofacial region depicted in the at least single image frame, wherein localizing the landmark is achieved by applying a deep neural network to obtain any kind of probability distribution of location of any one of the landmark, said landmark comprising of a feature or features with anatomical or pathological significance; and

classifying a dental or maxillofacial condition based on measuring a relation between two or more features within and/or between landmarks, wherein the measured relation is based on at least one of: measuring a distance between at least two points and comparing to a reference range; measuring an angle between three points in three-dimensional space and comparing to a reference range; or measuring a distance between a plane defined by three points and comparing to a reference range.

2. The method of claim 1 , wherein the landmark features localized are a cement-enamel junction (CEJ) point and bone attachment points (BAP) of a tooth and a distance measured between the two features above or below a threshold determine periodontal bone loss.

3. The method of claim 1 , wherein the landmark features localized are cephalometric features on a maxillofacial region and an angle measured between cephalometric features above or below a threshold determine an orthodontic condition.

4. The method of claim 1 , wherein the at least one received volumetric image comprises a 3-D pixel array.

5. The method of claim 1 , further comprising converting the 3-D pixel array into an array of Hounsfield Unit (HU) radio intensity measurements for pre-processing the received image.

6. The method of claim 5 , further comprising rescaling using linear interpolation for pre-processing the received image.

7. The method of claim 5 , further comprising normalization schemes to account for variations in intensity for pre-processing the received image.

8. The method of claim 1 , further comprising a step of: finding a minimum bounding rectangle around the localized landmark to achieve extraction for classification of a condition.

9. A system for classifying a dental or maxillofacial condition, said method comprising the steps of:

a processor;

a non-transitory storage element coupled to the processor;

encoded instructions stored in the non-transitory storage element, wherein the encoded instructions when implemented by the processor, configure the system to:

parse a received volumetric image into at least a single image frame; localize a landmark in a patient's dental or maxillofacial region depicted in the at least single image frame, wherein localizing the landmark is achieved by applying a deep neural network to obtain any kind of probability distribution of location of any one of the landmark, said landmark comprising of a feature or features with anatomical or pathological significance; and

classify a dental or maxillofacial condition based on measuring a relation between two or more features within and/or between landmarks, wherein the measured relation is based on at least one of: measuring a distance between at least two points and comparing to a reference range; measuring an angle between three points in three-dimensional space and comparing to a reference range; or measuring a distance between a plane defined by three points and comparing to a reference range.

10. The system of claim 9 , wherein the landmark features localized are a cement-enamel junction (CEJ) point and bone attachment points (BAP) of a tooth and a distance measured between the two features above or below a threshold determine periodontal bone loss.

11. The system of claim 9 , wherein the landmark features localized are cephalometric features on a maxillofacial region and an angle measured between cephalometric features above or below a threshold determine an orthodontic condition.

12. The system of claim 9 , wherein the at least one received volumetric image comprises a 3-D pixel array.

13. The system of claim 9 , further comprising converting the 3-D pixel array into an array of Hounsfield Unit (HU) radio intensity measurements for pre-processing the received image.

14. The system of claim 9 , further comprising rescaling using linear interpolation for pre-processing the received image.

15. The system of claim 9 , further comprising normalization schemes to account for variations in intensity for pre-processing the received image.

16. The system of claim 9 , further comprising finding a minimum bounding rectangle around the localized landmark for achieving extraction for classification of a condition.

17. A system for classifying a dental or maxillofacial condition, said system comprising:

a localization layer;

a classification layer;

a processor;

a non-transitory storage element coupled to the processor;

encoded instructions stored in the non-transitory storage element, wherein the encoded instructions when implemented by the processor, configure the system to:

localize a landmark in a patient's dental or maxillofacial region depicted in a parsed image frame by the localization layer, wherein the localizing is indicated by a minimum bounding rectangle around the landmark, said landmark comprising of a feature or features with anatomical or pathological significance; and

classify a dental or maxillofacial condition based on measuring a relation between two or more features within and/or between landmarks, wherein the measured relation is based on at least one of: measuring a distance between at least two points and comparing to a reference range; measuring an angle between three points in three-dimensional space and comparing to a reference range; or measuring a distance between a plane defined by three points and comparing to a reference range.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 29, 2021
From: EZHOV, MATVEY DMITRIEVICH; ALEKSANDROVSKIY, VLADIMIR LEONIDOVICH; SHUMILOV, EVGENY SERGEEVICH; GUSAREV, MAXIM; GOLITSYNA, MARIA
To: DIAGNOCAT INC
Reel/Frame 055751/0267 →
Continuity (3)
Continuation In Part 16783615 · Feb 6, 2020
Continuation In Part 16175067 · Oct 30, 2018
Related Publication 20210217170A1 · Jul 15, 2021
Cited By (1)
US 12,402,987