Projection System Fluorescence Correction for Medical Imaging
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Solution Overview
Problem
Existing projection systems for medical operations struggle to accurately project images of medical devices inserted within the body, leading to unclear visualization due to fluorescence diffusion and overlapping issues, making it difficult for users to recognize the position and type of devices.
Innovation Solution
A projection system comprising a light source, imaging unit, control unit, and projecting unit that captures fluorescent images of medical devices, generates image data for projection, and corrects the projection image to align with the fluorescent region, ensuring accurate representation on the body surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If a projection system projects an image of a medical device inserted within the body, then the user can recognize the position and type of devices, but the image becomes unclear due to fluorescence diffusion and overlapping issues
Solution Approach 1:
The system divides the image processing into multiple stages: capturing the fluorescent image, generating an initial projection image, detecting the fluorescent region, correcting the projection image based on the detected region, and then projecting. This segmentation allows each stage to address specific issues (fluorescence diffusion, overlapping) independently, improving both image clarity and position accuracy without compromising the other
Solution Approach 2:
The system implements a feedback loop where the captured fluorescent image is used to detect the actual fluorescent region, which then feeds back to correct the projection image. This closed-loop approach ensures that the projection image is continuously adjusted to match the actual fluorescent emission pattern, resolving the contradiction between maintaining image clarity and preserving position accuracy
2Manufacturing precision
If the projection system projects images without correction, then the projection process is simple and fast, but the projection image deviates from the actual fluorescent region
Solution Approach 1:
The system performs preliminary detection of the fluorescent region from the captured image before generating the final projection image. By detecting the fluorescent region in advance and using it to guide the correction process, the system ensures accurate alignment without requiring complex real-time adjustment mechanisms during projection, thus achieving high precision while managing complexity
Solution Approach 2:
The captured fluorescent image serves as an intermediary element between the medical device and the final projection image. This intermediary provides the reference information needed to detect the fluorescent region and correct the projection image, enabling accurate alignment without directly complicating the projection mechanism itself
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 enhances the accuracy of projecting medical device positions and types, allowing for clearer visualization and easier recognition by users, reducing deviations and improving operational precision.
Implementation Method 1
a substance that emits fluorescence by application thereto of a light beam having a predetermined wavelength
Data Source
AI summary
A projection system includes a light source, an imaging unit, a control unit, and a projecting unit. The light source applies a light beam having a predetermined wavelength. The imaging unit captures a subject to which the light beam is applied. The control unit generates image data for projection based on the captured image. The projecting unit projects a projection image onto the subject. The imaging unit captures the projection image together with an image of a region responding to the light beam. The control unit corrects the image data for projection to additionally display the projection image on a region which responds to the light beam and does not overlap a region onto which the projection image is projected, and to erase the projection image in a region onto which the projection image is projected and does not overlap the region responding to the light beam.