Laser Ultrasonic Motion Detection for Tomography Artifact Reduction
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Solution Overview
Problem
Tomography imaging systems face challenges in reducing motion artifacts due to patient movement during scans, leading to unreliable diagnoses and increased workload for correcting image quality.
Innovation Solution
A medical device system incorporating a laser ultrasonic component to detect movement information within the patient, which is used to adjust scan parameters and image reconstruction parameters, thereby improving image quality by minimizing motion artifacts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a patient remains still during a tomography scan, then image quality is improved, but the scan time increases and patient comfort deteriorates
Solution Approach 1:
The system performs preliminary detection of patient movement using laser ultrasonic components before and during the scan to establish baseline movement patterns. This allows the reconstruction algorithm to pre-compensate for expected motion artifacts, reducing the need for repeated scans and minimizing total scan time while maintaining image quality.
Solution Approach 2:
The system continuously monitors patient movement during scanning using laser ultrasonic sensors and provides real-time feedback to adjust scan parameters and reconstruction algorithms. This closed-loop feedback mechanism enables dynamic compensation for motion artifacts without requiring the patient to remain completely still, thereby reducing scan time while preserving image quality.
2Loss of time
If a patient moves during a tomography scan, then scan time is reduced, but motion artifacts increase and diagnostic reliability deteriorates
Solution Approach 1:
The system replaces traditional mechanical contact-based motion detection with laser ultrasonic non-contact detection. This substitution allows for continuous, high-precision monitoring of patient movement without physical interference, enabling accurate detection and compensation of motion artifacts even when patients move, thus maintaining diagnostic reliability without extending scan time.
Solution Approach 2:
The system dynamically adjusts scan parameters and reconstruction algorithms based on detected movement patterns. By changing parameters such as acquisition timing, reconstruction weighting, and artifact suppression thresholds in response to measured motion, the system maintains diagnostic reliability even when patients move during scanning.
3Manufacturing precision
If laser ultrasonic components are added to detect movement, then motion artifacts are reduced, but device complexity increases
Solution Approach 1:
The laser ultrasonic components serve multiple functions: they detect patient movement, characterize tissue properties, and provide guidance for reconstruction algorithms. This multi-functionality reduces the need for separate detection systems, thereby limiting the increase in device complexity while achieving motion artifact reduction and improved image quality.
Solution Approach 2:
The system merges the laser ultrasonic detection components with the existing tomography imaging system, integrating motion detection and image acquisition into a unified platform. This integration shares common infrastructure such as data processing units, control systems, and patient positioning mechanisms, thereby reducing the overall complexity increase that would result from adding separate detection equipment.
4Manufacturing precision
If movement detection is performed during scanning, then motion artifacts are reduced, but processing time increases
Solution Approach 1:
The system performs preliminary characterization of patient movement patterns using laser ultrasonic detection before the main scan. By establishing baseline motion patterns in advance, the reconstruction algorithm can pre-plan compensation strategies, reducing the computational burden during actual image reconstruction and minimizing processing time while maintaining image quality.
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 effectively reduces motion artifacts in tomographic images, enhancing diagnostic accuracy and reducing the workload associated with image correction.
Implementation Method 1
The ultrasonic signal may be acquired by at least one laser ultrasonic component of a medical device
Data Source
AI summary
The present disclosure provides systems and methods for tomography imaging. The systems and methods may obtain an ultrasonic signal indicating a movement state of a position of an object (e.g., a position inside the object). The ultrasonic signal may be acquired by at least one laser ultrasonic component of a medical device. The systems and methods may determine, based on the ultrasonic signal, movement information of the position of the object. The systems and methods may obtain, based on the movement information of the position, target image data of the object using an imaging component of the medical device.