Stereoscopic X-ray Tube with Segmented Detector for Moving Objects
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Solution Overview
Problem
Current stereoscopic x-ray imaging systems face challenges in achieving high-quality images of moving objects due to the inability to record two x-ray images simultaneously from different projection directions, leading to image deterioration caused by object movement.
Innovation Solution
A method and system for stereoscopic x-ray imaging using a stereoscopic x-ray tube with two x-ray beam sources positioned a short distance apart, an x-ray radiation detector with a scintillator and a grid of light-sensitive receiver units, and a buffer system that allows for rapid reading and resetting of measurement values, enabling minimal time loss between image recordings and improved image quality even with moving objects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If two x-ray images are recorded sequentially from different projection directions using a single detector, then stereoscopic imaging is achieved, but image quality deteriorates due to object movement during the time interval between recordings
Solution Approach 1:
The patent segments the detector into multiple independent detector units, each capable of independent readout. This allows simultaneous recording from multiple projection directions by directing x-ray beams from different angles to different detector units, eliminating the sequential recording bottleneck and capturing moving objects at the same moment in time.
Solution Approach 2:
The patent transitions from temporal separation (sequential recording) to spatial separation (simultaneous recording using multiple detector units positioned at different locations). By adding the spatial dimension to the recording architecture, multiple projection images are captured simultaneously without time delay, solving the motion artifact problem.
2Productivity
If a single x-ray detector is used for stereoscopic imaging, then device complexity is reduced, but the ability to record simultaneous images from different directions is limited
Solution Approach 1:
The detector is divided into multiple independent detector units, each with its own readout electronics and buffer memory. This segmentation enables parallel processing of x-ray signals from different projection directions, achieving simultaneous image capture while maintaining a relatively simple overall detector structure that can be integrated into existing x-ray 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
The system achieves high-quality stereoscopic images by minimizing the time interval between recording two x-ray images, allowing for accurate spatial assignment of moving objects and enhancing image quality, particularly for organs like the heart or liver, and objects such as catheters or coils during interventions.
Implementation Method 1
an x-ray radiation detector, which has a scintillator, which converts x-ray beam quanta striking the x-ray radiation detector to light quanta
Implementation Method 2
each detector unit having a light-sensitive receiver, at which a measurement value is changed by light quanta striking it
Data Source
AI summary
A method for stereoscopic x-ray imaging by a stereoscopic x-ray tube and by an x-ray radiation detector is provided. The x-ray radiation detector has a buffer. The stereoscopic x-ray tube has two x-ray beam sources disposed a short distance from one another. 2D image datasets are acquired at relatively short intervals one after the other, which have good quality.