X-ray Detector Alignment via Automated C-Arm Positioning
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
X-ray image diagnosing apparatus with compact high-resolution detectors face inefficiencies due to small visual fields, requiring inconvenient alignment and complex switching mechanisms, making therapeutic procedures cumbersome and inefficient.
Innovation Solution
An X-ray image diagnosing apparatus with a mechanism that automatically adjusts the position of the high-resolution detector to center the region of interest (ROI) within the image, using a C-arm holder unit and image processing section to calculate and execute the necessary movements, eliminating the need for manual alignment and simplifying the switching process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a compact high-resolution detector with a small visual field is used, then image resolution is improved, but the visual field size is reduced requiring additional alignment operations
Solution Approach 1:
The system automatically performs the alignment operation by driving the C-arm based on coordinate data from the specified marker position, eliminating the need for manual alignment operations. The high-resolution detector self-adjusts to center the ROI through automated control.
Solution Approach 2:
The operator specifies the marker position in advance on the initial X-ray image, and the system uses this pre-specified coordinate data to automatically position the high-resolution detector, performing the alignment action before the actual high-resolution imaging begins.
2Measurement precision
If a switching arm mechanism is added to enable detector replacement, then high-resolution imaging capability is improved, but device complexity increases
Solution Approach 1:
The C-arm holder unit serves multiple functions: it holds both the ordinary X-ray detector and the compact high-resolution detector, and it provides the driving mechanism for positioning the high-resolution detector. This multi-functional design reduces the need for separate switching mechanisms.
Solution Approach 2:
The patent combines the detector holder function and the driving mechanism into a single integrated C-arm holder unit, merging the support structure for detector replacement with the positioning drive system, thereby reducing overall device complexity.
3Ease of operation
If the high-resolution detector is positioned independently, then ROI centering is improved, but the system requires complex independent drive mechanisms
Solution Approach 1:
The driving mechanism for the high-resolution detector is integrated into the C-arm holder unit, combining the positioning function with the existing holder structure. This eliminates the need for a separate independent drive mechanism while achieving automatic ROI centering.
Data Source
AI summary
An embodiment includes an X-ray detecting section including an X-ray detector having a first visual field size and a high-resolution detector and having a second visual field size, an X-ray generating section for irradiating a subject with X-rays, an image processing section for generating a first X-ray image by means of the X-ray detector and a second X-ray image, a display section, a region defining section for displaying a spot corresponding to part of the second X-ray image or a region corresponding to the second X-ray image on the first X-ray image and specifying the position of the high-resolution detector by moving the spot or the region, a positional displacement calculating section for determining the coordinate difference between the center position of the first X-ray image and the position of the spot indicating the specified position and a move control section for controlling the top plate or the holding section.