Laser Scanning Microscope Synchronization for 3D Imaging
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Solution Overview
Problem
Current laser scanning microscopes have limited control over imaging parameters and lack synchronization with z-axis piezo stages, restricting their ability to achieve rapid 3D volumetric imaging and high-throughput automated imaging, especially for specimens with high aspect ratios.
Innovation Solution
A high-speed laser scanning microscope system with advanced synchronization techniques that allow flexible control over field-of-view and pixel numbers, integrated with a microfluidic immobilization device for ultrafast, high-resolution imaging of small animal models, enabling synchronization of scanning mirrors with z-axis piezo stages for fast 3D imaging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If purely hardware-based control is used in laser scanning microscopes, then the system is simple to manufacture, but the control over imaging parameters is limited
Solution Approach 1:
The patent replaces purely hardware-based control with a software-based control system that communicates with hardware components through standardized interfaces. The controller uses software algorithms to generate scan patterns, synchronize multiple scanners, and adjust imaging parameters dynamically, substituting rigid hardware control with flexible software control while maintaining hardware compatibility.
Solution Approach 2:
The system implements dynamic control of imaging parameters through software, allowing real-time adjustment of field-of-view size, pixel numbers, and scan patterns. The controller can dynamically synchronize multiple scanners and adjust z-axis piezo stage positions during image acquisition, enabling adaptive optimization of imaging conditions without physical reconfiguration.
2Adaptability or versatility
If resonant scanners are used with fixed synchronization, then the scanning speed is high, but the control over pixel numbers and field-of-view is limited
Solution Approach 1:
The system dynamically adjusts the synchronization between resonant scanners and data acquisition based on desired imaging parameters. The controller can modify the number of pixels per line, number of lines per frame, and field-of-view dimensions while maintaining synchronization with the resonant scanner's fixed frequency, allowing flexible parameter control without sacrificing scanning speed.
Solution Approach 2:
The patent changes software-controlled parameters (pixel numbers, field-of-view size, scan patterns) independently of the hardware's fixed scanning frequency. By decoupling parameter selection from physical scanner mechanics through software layering, the system allows continuous adjustment of imaging parameters while the resonant scanner operates at its optimal fixed frequency.
3Adaptability or versatility
If z-axis piezo stages are added for 3D imaging, then the volumetric imaging capability is improved, but the synchronization complexity increases
Solution Approach 1:
The controller acts as an intermediary that manages synchronization between multiple scanners and the z-axis piezo stage. It generates coordinated control signals that synchronize the horizontal and vertical scanners with the axial piezo stage movements, using software-based timing and coordination to manage the complexity of multi-component synchronization.
Solution Approach 2:
The controller is designed as a universal synchronization system that can coordinate multiple types of scanners (resonant, galvanometric) and z-axis piezo stages simultaneously. It provides a unified control interface that manages all synchronization requirements through software, making the system capable of handling complex multi-component coordination without requiring separate dedicated synchronization circuits for each component.
4Area of stationary object
If the field-of-view size is increased for high aspect ratio specimens, then the imaging coverage is improved, but the imaging time increases
Solution Approach 1:
The system dynamically adjusts scan patterns and pixel distribution based on the desired field-of-view size and specimen characteristics. For high aspect ratio specimens, the controller can optimize the aspect ratio of the scanned region, concentrate pixels in critical areas, and adjust scanning speed dynamically to maintain high throughput while covering large areas.
Solution Approach 2:
The system allows selective imaging of regions of interest within a large field-of-view by concentrating scanning resources on areas containing the specimen or features of interest. This partial action approach enables covering large areas for high aspect ratio specimens while reducing total imaging time by not uniformly scanning the entire maximum field-of-view.
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
Enables ultrafast, high-resolution, and high-throughput 3D imaging of biological specimens, particularly suitable for imaging specimens with high aspect ratios, such as C. elegans, with improved imaging speed and flexibility, reducing photo-bleaching and stress-related image quality degradation.
Implementation Method 1
The resonant scanner is configured to scan the laser beam across the specimen at a resonant frequency
Implementation Method 2
The galvanometric scanner is configured to scan the laser beam along a vertical axis
Implementation Method 3
synchronization of the motion of the scanning mirrors with the z-axis piezo microscopes
Data Source
AI summary
A laser scanning system for capturing an image of a specimen is described herein. The laser scanning system includes a light source configured to emit a light beam for illuminating the specimen, a scanning unit including a plurality of reflectors for scanning the light beam along first and second axes, and a data acquisition unit configured to control acquisition of the image. The laser scanning system can include a control circuit configured to receive a reference clock signal for the first reflector and generate a synchronization clock signal based on the reference clock signal. The laser scanning system can include a synchronization controller configured to control the scanning unit and the data acquisition unit. The synchronization controller can be configured to receive the synchronization clock signal, receive a plurality of imaging parameters, and generate a plurality of control signals based on the synchronization clock signal and the imaging parameters.