Cone Beam Breast CT with Cardiac-Synchronized Calcification Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing cone beam breast computed tomography (CBBCT) systems struggle to achieve high-resolution imaging of breast calcifications due to motion artifacts and blurring, limiting the detection of small tumors and increasing the need for unnecessary biopsies.
Innovation Solution
The system employs a stationary imaging approach with discrete gantry motions and improved x-ray sources and detectors, combined with patient stabilization and synchronization with heartbeat to reduce motion-induced blur, allowing for enhanced resolution down to 0.1 mm or less.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional CBBCT imaging is used, then imaging coverage is achieved, but motion artifacts and blurring occur that limit detection resolution
Solution Approach 1:
The patent applies periodic action by synchronizing image acquisition with the cardiac cycle, acquiring images at specific phases (e.g., diastole) when motion is minimal. This periodic sampling strategy reduces motion artifacts while maintaining imaging coverage, enabling detection of calcifications at resolutions of 0.1 mm or less without the harmful effects of continuous motion during imaging.
Solution Approach 2:
The patent employs preliminary action through breath-hold instructions and positioning protocols performed before image acquisition. Patients are instructed to hold their breath or maintain specific positions prior to and during the imaging process, preparing the breast tissue to minimize motion artifacts before the actual imaging occurs, thereby enhancing detection precision.
2Reliability
If mammography is used for breast cancer detection, then screening is available, but sensitivity is reduced for small tumors and dense breast tissue
Solution Approach 1:
The patent replaces the projection imaging mechanism of mammography with cone beam computed tomography (CBCT), substituting a mechanical 2D projection system with a 3D volumetric imaging system. This substitution enables superior contrast resolution and spatial frequency response, allowing detection of small tumors and calcifications in dense breast tissue with high sensitivity and specificity, thereby improving overall detection accuracy.
Solution Approach 2:
The patent transitions from two-dimensional mammographic imaging to three-dimensional CBCT imaging, adding the depth dimension to breast tissue visualization. This dimensional change provides enhanced contrast detectability and spatial resolution, enabling detection of small tumors and calcifications that are obscured in 2D projections, thus improving reliability for diverse breast tissue densities.
3Measurement precision
If discrete stationary imaging is used, then resolution is improved, but imaging time increases
Solution Approach 1:
The patent applies periodic action by acquiring images at specific cardiac phases rather than continuously, which reduces the total imaging time compared to continuous stationary imaging while maintaining high resolution. The periodic sampling at optimal phases (e.g., diastole) achieves 0.1 mm or less resolution without requiring prolonged acquisition time, as images are captured only when motion is minimal.
Solution Approach 2:
The patent employs preliminary action through rapid positioning and breath-hold preparation before image acquisition, minimizing the overall imaging time. By preparing the patient and positioning the breast quickly before the actual imaging, the system reduces the time loss associated with discrete stationary imaging while preserving high resolution through the brief, optimized imaging window.
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 improves the detection and characterization of calcifications, reducing the number of unnecessary biopsies and enhancing the accuracy of breast cancer diagnosis by minimizing image blur and increasing resolution.
Implementation Method 1
an x-ray source configured to emit a beam of x-rays
Implementation Method 2
a detector configured to receive the beam of x-rays
Data Source
AI summary
A method of imaging a breast microcalcification feature by acquiring a tomographic imaging data set and a stationary imaging data set and combining the tomographic imaging data set with the stationary imaging data set to improve resolution and reduce blur in the resulting combined image. The resulting improve resolution image data set is evaluated for identification of breast calcifications for purposes of breast cancer screening, diagnosis and/or treatment.