3D Medical Image Reconstruction Cavitation Bubble Correction
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Solution Overview
Problem
Three-dimensional medical images created using medical imaging systems can suffer from image errors due to temporal and spatial variations in the examination object, such as cavitation bubbles caused by high-energy ultrasound pulses, leading to inconsistencies in the reconstruction process.
Innovation Solution
A method that synchronizes medical imaging systems with ultrasound systems to identify and correct cavitation bubble projection images, replacing them with corresponding corrected images to minimize image errors in the reconstruction of three-dimensional medical images.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If projection images are acquired sequentially over time, then the examination object can be imaged from different angles, but temporal changes in the examination object (such as cavitation bubbles) cause image errors in the three-dimensional reconstruction
Solution Approach 1:
The system performs preliminary identification of cavitation bubbles in projection images before they affect the three-dimensional reconstruction. By detecting cavitation bubbles in advance and marking them for correction, the system prevents image errors from propagating through the reconstruction process, thus maintaining both imaging capability and accuracy.
Solution Approach 2:
The system establishes a feedback loop where projection images are continuously monitored for cavitation bubbles, corrections are applied to identified images, and the corrected images are used in subsequent reconstruction steps. This feedback mechanism ensures that temporal changes are accounted for and image accuracy is maintained throughout the imaging process.
2Object-generated harmful factors
If cavitation bubbles are present in the examination object during imaging, then ultrasound treatment can be performed, but the cavitation bubbles cause inconsistencies in projection images and image errors in the three-dimensional medical image
Solution Approach 1:
The system extracts and isolates cavitation bubbles from the projection images through identification and segmentation processes. By separating the cavitation bubble artifacts from the actual anatomical structures, the system can correct or remove these harmful factors while preserving the quality of the remaining image data for accurate three-dimensional reconstruction.
Solution Approach 2:
The system applies different processing qualities to different regions of the projection images. Areas containing cavitation bubbles receive specialized correction treatment, while other regions are processed normally. This localized approach ensures that cavitation bubble interference is addressed without compromising the overall image quality or introducing artifacts in non-affected regions.
3Device complexity
If the medical imaging system operates independently without synchronization with ultrasound systems, then imaging can be performed, but temporal and spatial variations in the examination object cannot be accounted for
Solution Approach 1:
The system merges the medical imaging system with the ultrasound system through temporal and spatial synchronization. By combining the operational data from both systems, the system can accurately track and account for temporal and spatial variations in the examination object, including cavitation bubble movements, thereby improving reconstruction accuracy without excessive complexity.
Solution Approach 2:
The synchronized system serves multiple functions: it performs standard medical imaging while simultaneously monitoring for cavitation bubbles and adjusting reconstruction parameters accordingly. This multi-functionality allows the system to handle both routine imaging and dynamic changes in the examination object through a unified approach, improving accuracy without requiring separate specialized systems.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach allows for the accurate reconstruction of three-dimensional medical images by accounting for temporally and spatially variable cavitation bubbles, reducing image errors and enhancing the reliability of monitoring interventions.
Implementation Method 1
The ultrasound pulse can be radiated or introduced into the examination object with an ultrasound probe or an ultrasound transducer. In the focus of the ultrasound pulse or in the environment of the focus of the ultrasound pulse at least one vapor-filled bubble, known as a cavitation bubble, is created in the examination object.
Implementation Method 2
The multiplicity of projection images is then a multiplicity of two-dimensional x-ray images that image the examination object from different angles or mapping angles.
Data Source
AI summary
In a computer-implemented method, a three-dimensional medical image of an examination object is created taking into consideration at least one temporally and/or spatially variable cavitation bubble in the examination object. The cavitation bubble is created by at least one ultrasound pulse emitted by an ultrasound system into the examination object. The computer-implemented method comprises: acquiring a multiplicity of projection images of the examination object with a medical imaging system; determining at least one cavitation bubble projection image from the multiplicity of projection images as a function of a synchronization between a medical imaging system and the ultrasound system; determining a multiplicity of corrected projection images; reconstructing the three-dimensional medical image as a function of the multiplicity of corrected projection images; and provisioning the three-dimensional medical image.