MRI Subject Positioning Guidance via Locator Image Analysis
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Solution Overview
Problem
Magnetic resonance imaging (MRI) systems face challenges in maintaining consistent subject positioning during follow-up examinations, leading to inconsistent image appearances due to inadequate standardization of subject settings, particularly in inexperienced operators or institutions lacking sufficient imaging expertise.
Innovation Solution
The MRI apparatus includes sequence control and processing circuitry that performs initial imaging to generate a locator image, detects the subject's setting state, and displays supporting information to standardize the subject positioning for subsequent imaging, using features like straight lines representing bone orientations and sensitivity region edges to guide adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If manual standardization methods (packing mats and cushions) are used to unify subject setting conditions, then some consistency in positioning is achieved, but the standardization is insufficient and inconsistent image appearance occurs
Solution Approach 1:
The patent replaces manual mechanical standardization methods (packing mats and cushions) with an automated image processing system that uses locator images and processing circuitry to detect and guide subject positioning, thereby achieving more precise and reliable positioning consistency
Solution Approach 2:
The system captures locator images, processes them to detect subject positioning state, and provides feedback guidance to the operator for adjustment, creating a closed-loop control system that ensures accurate and consistent subject positioning across examinations
2Ease of operation
If experienced operators perform imaging with manual judgment, then subjective assessment of positioning is possible, but objective quantification and precise measurement of positioning state are lacking
Solution Approach 1:
The patent replaces subjective operator judgment with an automated image processing system that objectively measures subject positioning state using processing circuitry to analyze locator images, providing precise quantification of positioning parameters
Solution Approach 2:
The system performs self-assessment of subject positioning by automatically analyzing locator images to detect positioning state, eliminating the need for manual operator judgment while maintaining operational simplicity through automated feedback
Data Source
AI summary
A magnetic resonance imaging apparatus according to embodiments includes sequence control circuitry and processing circuitry. The sequence control circuitry performs first imaging and second imaging to a subject. The processing circuitry detects a state of a setting of the subject by using a magnetic resonance image acquired from the first imaging, and causes a display to display supporting information that supports the setting of the subject based on information defected. The sequence control circuitry performs the second imaging on the subject after the supporting information is displayed.