IP Library Granted Patent US 10,278,672
Granted Patent B2
US 10,278,672 · App. 14/835,349 · Granted May 7, 2019

Method of characterizing the pathological response of tissue to a treatment plan

Inventors: Peter John Littrup (Plymouth, MI); Nebojsa Duric (Plymouth, MI)
Assignee: Delphinus Medical Technologies, Inc.
A61B8/085A61B5/4848A61B8/0825A61B8/0833A61B8/406A61B8/461A61B8/466A61B8/469A61B8/483A61B8/5207A61B8/5223A61B8/5238G06T7/0014A61B5/4312G06T2207/10136G06T2207/30068
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Quick Facts
Patent No.
US 10,278,672
App. No.
14/835,349
Granted
May 7, 2019
Kind
B2
Abstract

A method of characterizing the pathological response of tissue to a treatment plan, including: obtaining a set of sequential morphology renderings of the tissue, wherein each rendering corresponds to a particular point in time during the treatment plan; generating a set of representative values of a biomechanical property of the tissue for the set of renderings, wherein each representative value is based on a corresponding rendering; determining a trend of the biomechanical property based on the set of representative values; and predicting response of the tissue to the treatment plan based on the trend of the biomechanical property.

Claims (24)

1. A method of characterizing pathological response of a tumor in a volume of tissue to a treatment plan, comprising:

at a computing system in communication with an ultrasound system, generating a set of morphology renderings of the volume of tissue, from acoustic data received from the ultrasound system, wherein the set of morphology renderings is associated with a set of time points spanning at least a portion of the treatment plan;

at the computing system, generating a set of volume average values of one or more biomechanical properties representative of a combination of acoustic speed with at least one of acoustic attenuation and acoustic reflection from the set of morphology renderings;

at the computing system, calculating a rate of change in the one or more biomechanical properties for the tumor from the set of volume average values; and

at the computing system, generating a predicted response of the tumor to the treatment plan based on the rate of change in the one or more biomechanical properties within the tumor.

2. The method of claim 1 , wherein generating the set of morphology renderings includes suspending the volume of tissue within a bath having a ring transducer immersed in the bath, and passing the ring transducer along an anterior-posterior direction across the volume of tissue.

3. The method of claim 2 , wherein generating the set of morphology renderings comprises 1) generating a plurality of two-dimensional cross-sectional images of the tumor and combining the cross-sectional images into a three-dimensional image of the tumor and 2) generating a merged image representing a combination of at least two of acoustic reflection, acoustic attenuation, and acoustic speed within the tumor.

4. The method of claim 1 , wherein generating the set of volume average values includes generating at least one value based upon a combination of acoustic speed, acoustic attenuation, and acoustic reflection data for the tumor.

5. The method of claim 1 , wherein calculating the rate of change in the biomechanical property within the tumor includes calculating a slope of a best-fit curve fitted to two or more values in the set of volume average values.

6. The method of claim 1 , further comprising: at an output module of a user interface device in communication with the computing system, informing an entity of the predicted response, thereby enabling assessment of the treatment plan.

7. The method of claim 1 , further comprising: by way of a display in communication with the computing system, automatically recommending an adjustment to the treatment plan, to an entity associated with a patient having the tumor, based upon a comparison between the rate of change in the biomechanical property and a success threshold slope.

8. The method of claim 7 , wherein in automatically recommending the adjustment to the treatment plan, the success threshold slope is based upon a prior patient dataset characterizing response of prior patients to the treatment plan, wherein the prior patient dataset provides a set of thresholds indicative of predicted responsiveness to the treatment plan.

9. The method of claim 1 , wherein the predicted response of the tumor to the treatment plan comprises an indication of the tumor as one of responsive, partially responsive, or nonresponsive.

10. The method of claim 1 , wherein the set of time points is obtained at one or more phases of the treatment plan.

11. The method of claim 10 , wherein at least one of the one or more phases comprises a treatment selected from the group consisting of a chemotherapy treatment, a radiation therapy treatment, a cryotherapy treatment, a radiofrequency ablation treatment, and an electroporation treatment.

12. The method of claim 10 , wherein at least one of the set of time points is associated with at least one of the morphology renderings obtained immediately before or after at least one of the one or more treatment phases.

13. The method of claim 1 , wherein a time point of the set of time points is obtained every one to three weeks.

14. The method of claim 1 , wherein generating the set of volume average values comprises generating one or more volume average values characterizing tumor tissue and generating one or more volume average values characterizing background tissue.

15. The method of claim 1 , wherein generating the predicted response of the tumor to the treatment plan comprises a qualitative characterization of the rate of change in the one or more biomechanical properties.

16. The method of claim 1 , wherein generating the predicted response of the tumor to the treatment plan comprises a characterization of the rate of change in the one or more biomechanical properties and a characterization of a prior patient MRI or PET dataset.

17. The method of claim 1 , wherein the method characterizes a pathological response of two or more tumors.

18. The method of claim 1 , wherein the method further comprises characterizing a spatial distribution of the one or more biomechanical properties from the set of morphology renderings.

19. The method of claim 18 , wherein generating the predicted response is additionally based on the spatial distribution of the one or more biomechanical properties.

20. The method of claim 1 , wherein the method further comprises, at the computing system, graphing the set of volume average values of the one or more biomechanical properties on a plot against a temporal variable.

Assignments (3)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 7, 2025
From: DELPHINUS MEDICAL TECHNOLOGIES, INC.
To: APERIA MEDICAL, LLC
Reel/Frame 072495/0454 →
SECURITY INTEREST Recorded Jun 26, 2023
From: DELPHINUS MEDICAL TECHNOLOGIES, INC.
To: TRINITY CAPITAL INC.
Reel/Frame 064093/0550 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 9, 2015
From: DURIC, NEBOJSA; LITTRUP, PETER JOHN
To: DELPHINUS MEDICAL TECHNOLOGIES, INC.
Reel/Frame 036518/0551 →
Continuity (3)
Continuation 13027036 · Feb 14, 2011
Provisional Application 61304256 · Feb 12, 2010
Related Publication 20150359508A1 · Dec 17, 2015