Optical-Radiography Fusion for Esophageal Imaging
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Solution Overview
Problem
Current videofluoroscopic examination technologies face challenges in accurately imaging the lower esophagus during swallowing, as existing methods struggle to distinguish the esophagus and airway, especially when radiography is performed at a high frame rate, leading to unclear region of interest positions and potential misidentification.
Innovation Solution
An information processing apparatus and method that acquires optical images to estimate the position of regions of interest, such as the esophagus and airway, and adjusts radiography imaging conditions based on the positional relationship between these regions and the sample, allowing for improved image interpretation and higher frame rates during videofluoroscopic examinations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If radiography is performed at a high frame rate to capture swallowing dynamics, then the temporal resolution is improved, but the image quality and clarity of region of interest positions deteriorate
Solution Approach 1:
The system performs preliminary optical imaging to estimate the position of regions of interest (esophagus, airway) before conducting radiography. This preliminary positioning information allows the radiography system to focus on specific areas, maintaining high frame rates while improving image quality through targeted imaging rather than full-field exposure.
Solution Approach 2:
The patent introduces optical imaging as an intermediary technique that bridges the gap between high frame rate requirements and image quality needs. The optical images serve as a mediator to identify and mark region of interest positions, which then guide the radiography process to capture clear images at high temporal resolution.
2Area of stationary object
If the imaging field is expanded to cover both pharynx and lower esophagus, then the coverage area is improved, but the image resolution and clarity of specific regions deteriorate
Solution Approach 1:
The patent divides the imaging process into segments: first using optical imaging to identify and mark specific regions of interest (pharynx, esophagus, airway) separately, then using radiography to capture detailed images of these marked regions. This segmentation allows comprehensive coverage while maintaining high resolution in each specific region.
Solution Approach 2:
The system applies different imaging qualities to different regions: optical imaging provides broad coverage for positioning, while radiography provides high-resolution detailed imaging of specific marked regions. This local quality differentiation ensures that each region receives the appropriate imaging modality for optimal clarity.
3Measurement precision
If optical imaging is used to estimate region of interest positions, then the positioning accuracy is improved, but the system complexity increases
Solution Approach 1:
The optical imaging component serves multiple functions: it captures the subject's anatomical structure, estimates the positions of regions of interest, and provides guidance for radiography targeting. This multi-functionality reduces the need for separate positioning devices, thereby limiting the increase in system complexity.
Solution Approach 2:
The system uses the subject's own optical image to automatically estimate and mark region of interest positions without requiring manual positioning or additional external positioning equipment. This self-service approach improves positioning accuracy while minimizing added system complexity.
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 clear imaging of the esophagus and airway by estimating region of interest positions from optical images, supporting high frame rate radiography and reducing resolution impacts, thus enhancing the interpretation of videofluoroscopic examinations.
Implementation Method 1
acquire at least one optical image obtained by optically imaging a subject from a first direction
Implementation Method 2
acquire a plurality of radiation images obtained by continuously performing radiography of a state in which the subject swallows a sample from the first direction
Data Source
AI summary
An information processing apparatus comprising at least one processor, wherein the processor is configured to: acquire at least one optical image obtained by optically imaging a subject from a first direction; estimate a position of at least one first region of interest based on the optical image; acquire a plurality of radiation images obtained by continuously performing radiography of a state in which the subject swallows a sample from the first direction; specify a second region of interest corresponding to the position of the first region of interest in the radiation image; monitor a position of the sample based on the plurality of radiation images; and change an imaging condition for the radiography based on a positional relationship between the second region of interest and the sample.