Digital Panoramic Dental X-Ray Imaging System with High-Speed CdTe-CMOS Detector
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Solution Overview
Problem
Current dental panoramic X-ray imaging systems face challenges such as slow data readout, high radiation doses, and the inability to perform continuous, real-time scans, leading to blurred images and increased patient discomfort due to misalignment and the need for multiple exposures.
Innovation Solution
A digital X-ray imaging system with a high-frame-rate X-ray source, a CdTe-CMOS detector, and a mechanical manipulator allowing continuous movement, capable of producing multiple frames during exposure, and reconstructing panoramic, transverse, and 3D images from a single exposure, with real-time data processing and storage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If traditional digital sensors (CCD with scintillator or TFT flat panels) are used, then X-ray images can be captured, but the data readout speed is too slow for continuous exposure and real-time viewing
Solution Approach 1:
The patent changes the fundamental parameter of detector technology from traditional CCD/TFT systems to a novel detector architecture that achieves frame rates exceeding 1000 fps. This parameter change in readout speed enables continuous exposure capability and real-time viewing, resolving the contradiction between speed and reliability.
2Adaptability or versatility
If multiple intra-oral sensors are used to cover different functionalities, then complete diagnostic range is achieved, but cost burden increases significantly
Solution Approach 1:
The patent creates a universal extra-oral imaging system that can perform multiple diagnostic functions (panoramic imaging, transverse slicing, 3-D reconstruction) using a single detector and software-based processing. This multi-functional approach eliminates the need for multiple specialized intra-oral sensors, reducing device complexity while maintaining complete diagnostic coverage.
3Measurement precision
If conventional panoramic imaging is performed, then basic dental imaging is achieved, but image blurring occurs due to patient movement and misalignment
Solution Approach 1:
The patent implements continuous exposure at ultra-high frame rates ( >1000 fps) during the scanning process, allowing the system to capture images continuously without interruption. This continuous action, combined with motion compensation algorithms, eliminates image blurring caused by patient movement while maintaining short effective exposure times.
Solution Approach 2:
The system performs preliminary motion tracking and compensation during the exposure process, adjusting for patient movement in real-time before the final image is reconstructed. This preliminary action prevents blurring rather than correcting it afterward, maintaining image sharpness during dynamic scanning.
4Measurement precision
If multiple exposures are taken to ensure proper imaging, then diagnostic quality is improved, but radiation dose to patient increases
Solution Approach 1:
The patent enables a single exposure to produce multiple diagnostic views through software-based reconstruction algorithms that can generate panoramic images, transverse slices, and 3-D reconstructions from the same raw data. This eliminates the need for multiple separate exposures, maintaining diagnostic quality while minimizing radiation dose.
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 system reduces radiation exposure, enables continuous, fast, real-time scanning, and corrects blurring, allowing for high-quality panoramic, transverse, and 3D image reconstruction from a single exposure, improving diagnostic efficiency and patient safety.
Implementation Method 1
The purpose of the X-ray generator is to create the x-rays that penetrate the head of the patient and arrive at the imaging device
Implementation Method 2
The imaging device detects and converts the x-rays incident on it into an image
Implementation Method 3
The mechanical manipulator displaces both the imaging device and the X-ray generator in such a way that a proper panoramic image of the plane-of-interest is formed
Data Source
AI summary
An extra-oral digital panoramic dental x-ray imaging system for multi-layer panoramic and transverse X-ray imaging provided with an X-ray source and a digital imaging device providing real time frame mode output and autofocusing. The X-ray source and imaging device are mounted in a mechanical manipulator defining the trajectory of a predetermined image layer. The imaging device communicates with a processor that generates a frames memory from which an image reconstruction mechanism composes the final images.