Real-time Fluoroscopic Image Enhancement via Multi-band Frequency Decomposition
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Solution Overview
Problem
Conventional fluoroscopic imaging faces challenges with high noise levels and limited flexibility in enhancing or suppressing details, particularly for visualizing tubes and devices during procedures, which can impact patient treatment effectiveness.
Innovation Solution
Implementing a method for real-time adjustment of image enhancement parameters using multi-band spatial frequency decomposition and recomposition, allowing operators to modify image processing settings during fluoroscopic imaging sessions, including dynamic range and contrast adjustments, via foot pedals or other input devices for improved visibility of specific features.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional fluoroscopic imaging is used, then real-time viewing of internal anatomy is achieved, but image noise levels are high and detail presentation is limited
Solution Approach 1:
The image processing is segmented into multiple frequency bands using multi-band spatial frequency decomposition. This separates the image into different frequency components, allowing selective enhancement of detail frequencies while suppressing noise frequencies, thereby resolving the contradiction between detail presentation and noise reduction
Solution Approach 2:
Different image regions and frequency bands are treated with different processing qualities. Detail-enhancing processing is applied selectively to frequency bands containing anatomical or device details, while noise suppression is applied to bands containing primarily noise, achieving local optimization of image quality
2Adaptability or versatility
If dedicated fluoroscopic systems with fixed display settings are used, then consistent imaging presentation is maintained, but flexibility to enhance or suppress particular details is limited
Solution Approach 1:
The system transitions from static, fixed display settings to dynamic, adjustable image processing parameters. Operators can modify processing parameters in real-time during procedures, allowing the system to adapt to different anatomical structures and procedural needs while maintaining operational simplicity through automated processing
3Reliability
If tube positioning is monitored with conventional fluoroscopy, then patient treatment safety is improved, but visualization of tubing and devices remains difficult
Solution Approach 1:
The system applies contrast enhancement and frequency-based processing that effectively makes tubing and devices more visually distinct in the grayscale fluoroscopic images, analogous to color enhancement. This improves the visibility and detectability of medical devices while maintaining the existing imaging modality
4Ease of operation
If practitioners manipulate catheters while referring to fluoroscopy display, then treatment procedures are performed, but display controls are inaccessible during the procedure
Solution Approach 1:
The system provides automated image processing that operates without requiring manual intervention during procedures. The multi-band spatial frequency decomposition and parameter adjustments are performed automatically, allowing practitioners to focus on patient care without needing to access or adjust display controls
Data Source
AI summary
A method for display of a fluoroscopic image sequence during ongoing image acquisition acquires and renders a first image of a subject on a display according to a first parameter setting, modifies the first parameter setting according to an operator instruction entered following acquisition of the first image, and applies the modified first parameter setting for acquiring and rendering one or more subsequent fluoroscopic images of the subject in the fluoroscopic image sequence.