3D Transducer Placement Guidance for Tumor Treating Fields

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Solution Overview

Problem

Optimizing transducer array placement on a patient's body for tumor treating fields (TTFields) is challenging due to minimal visibility of target areas, leading to misalignment and reduced treatment efficacy.

Innovation Solution

A method and apparatus using image data and 3D modeling to determine and register optimal transducer placement positions, assisting in aligning transducer arrays for improved TTFields treatment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If transducer arrays are placed manually on the patient's body, then the placement process is simple and quick, but the alignment precision and treatment efficacy are reduced due to minimal visibility of target areas

Engineering Contradiction:
Improvetransducer placement precisionVSAvoidplacement guidance system complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The patent transforms the 2D image data from medical imaging into a 3D virtual model of the patient's body surface. This dimensional transformation enables precise spatial mapping of transducer placement positions, allowing the system to provide accurate 3D placement guidance while maintaining relatively simple operation through visual overlay display

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The patent creates a virtual copy of the patient's body surface from medical images and overlays it with recommended transducer placement positions. This virtual model serves as a guide that can be displayed alongside the actual patient anatomy, enabling precise placement without requiring complex physical guidance devices

Inventive Principle:
Principle #26Copying

2Reliability

If image data processing and 3D modeling are used to determine optimal transducer placement, then the treatment efficacy is improved, but the system complexity and processing time increase

Engineering Contradiction:
Improvetreatment efficacyVSAvoidplacement preparation time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The patent performs image processing and 3D model generation in advance before the actual transducer placement procedure. By pre-determining the optimal placement positions and creating the virtual guidance model beforehand, the system reduces the time required during the actual placement procedure while ensuring treatment efficacy through careful preliminary analysis

Inventive Principle:
Principle #10Preliminary action

3Measurement precision

If multiple image data sets are registered and processed, then the placement accuracy is enhanced, but the computational complexity and data processing requirements increase

Engineering Contradiction:
Improveplacement position accuracyVSAvoiddata processing system complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent extracts only the essential features and landmarks from the medical images that are necessary for determining transducer placement positions. By selectively extracting relevant anatomical features rather than processing entire image data sets, the system achieves high placement accuracy while reducing computational complexity and data processing requirements

Inventive Principle:
Principle #2Taking out (Extraction)

Data Source

PatentUS20250288802A1Methods, systems, and apparatuses for guiding transducer placements for tumor treating fields
Publication Date: 2025.09.18 NOVOCURE GMBH
  • US20250288802A1 patent drawing
  • US20250288802A1 patent drawing
  • US20250288802A1 patent drawing

AI summary

A method of assisting transducer placements on a subject's body for applying tumor treating fields includes: determining, based on one or more images associated with a portion of a subject's body, a first image data, wherein the first image data comprises one or more recommended transducer placement positions; determining, based on the one or more images, a second image data, wherein the second image data comprises one or more transducer placement positions; registering the second image data to the first image data; and generating a composite data comprising the one or more transducer placement positions and the one or more recommended transducer array placement positions.