MRI Apparatus Cross-Sectional Positioning Feedback
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Solution Overview
Problem
Conventional magnetic resonance imaging (MRI) techniques face challenges in accurately positioning reference cross-sectional images due to time lags and body movement during cardiac studies, leading to inefficient and cumbersome manual methods that require unnecessary image acquisition.
Innovation Solution
An MRI apparatus with a processor and memory that automatically detects cross-sectional positions from volume data, generates display images superimposing the position of subsequent cross-sectional images on previously acquired images, allowing for real-time correction and reducing positional errors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If automatic detection of cross-sectional positions is used, then productivity is improved, but measurement precision deteriorates due to time lag and body movement
Solution Approach 1:
The system displays the detected cross-sectional position on an image to the operator, who can then correct the position if needed. This feedback loop allows automatic detection to operate efficiently while providing a correction mechanism to maintain precision, resolving the contradiction between productivity improvement and measurement precision deterioration.
2Measurement precision
If manual positioning method is used, then measurement precision is improved, but device complexity increases and productivity decreases
Solution Approach 1:
The system performs automatic detection of cross-sectional positions without requiring manual intervention for the basic positioning task. The operator only needs to review and correct the automatically detected position when necessary, allowing the system to serve itself for routine positioning while maintaining precision when needed.
Solution Approach 2:
The system automatically detects and pre-positions cross-sectional images before final review. This preliminary action handles the routine positioning work automatically, improving productivity while allowing the operator to focus on verifying and correcting positions when needed to maintain precision.
3Measurement precision
If all reference cross-sectional images are acquired for positioning, then measurement precision is improved, but loss of time increases
Solution Approach 1:
The system extracts only the essential information needed for positioning (cross-sectional positions) from the images, rather than requiring acquisition of all reference cross-sectional images. This extraction approach maintains positioning accuracy by focusing on key positional data while eliminating unnecessary image acquisition time.
Data Source
AI summary
A magnetic resonance imaging apparatus according to an embodiment includes a processor and a memory. The memory stores processor-executable instructions that cause the processor to detect cross-sectional positions of a plurality of cross-sectional images to be acquired in an imaging scan from volume data; acquire the cross-sectional images in sequence based on the cross-sectional positions by executing the imaging scan; and after the first cross-sectional image is acquired in the imaging scan, generate a display image, and display the display image on a display, the display image being an image in which a cross-sectional position of a second cross-sectional image which is detected from the volume data is superimposed on the first cross-sectional image, the second cross-sectional image being a cross-sectional image before being acquired and intersecting with the first cross-sectional image.