MR-Visible Indicia Patterns for Reliable Phantom Identification
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Solution Overview
Problem
Current MRI scanning procedures rely on image header information for subject or object identification, which can be lost when images are converted to different formats, and there is a need for a method to uniquely identify phantoms and human subjects without relying on header information, especially for quality control and anonymization purposes.
Innovation Solution
Magnetic resonance (MR)-visible labels or markers with indicia arranged in patterns such as QR codes, barcodes, or geometric shapes that encode information, using materials with distinct MR properties, allowing unique identification within MRI images.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If image header information is used for subject or object identification, then identification can be achieved, but the information may be lost when images are converted to different formats
Solution Approach 1:
The patent creates a visual copy of identification information by encoding it into the image content itself through MR-visible indicia. Instead of relying on separate header information that can be lost during format conversion, the identification data is embedded directly into the image as visible patterns that persist across format changes.
Solution Approach 2:
The patent merges the identification information with the image content by incorporating MR-visible indicia directly into the scanned image. This combination ensures that the identification data travels with the image regardless of format conversion, eliminating the separation between image data and identification metadata.
2Measurement precision
If multiple phantoms have similar image characteristics, then they are difficult to differentiate, but standardized identification could improve automated post-processing
Solution Approach 1:
The patent applies local quality by placing unique MR-visible indicia patterns at specific locations on or near the phantoms. These localized visual markers provide distinctive identification characteristics that differentiate between phantoms with similar overall image characteristics, enabling precise identification without requiring complex system changes.
Solution Approach 2:
The patent uses variations in MR signal intensity and contrast (analogous to color changes) to create distinguishable indicia patterns. Different phantoms can be identified by variations in the magnetic resonance properties of their associated indicia, such as different relaxation times or signal intensities, providing clear differentiation despite similar phantom characteristics.
3Reliability
If patient information is input incorrectly, then identification errors occur, but MR-visible markers could provide verification
Solution Approach 1:
The patent implements self-service by having the MR-visible indicia automatically provide identification verification during the scanning process. The system itself captures and records the identification information visually within the image, eliminating the need for separate manual verification processes and reducing reliance on potentially erroneous external data entry.
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 reliable and standardized identification of objects or subjects within MRI images, even after format changes, providing a secure and efficient method for encoding information like protected health information and phantom details, and aiding in automated processing and image quality analysis.
Implementation Method 1
a surface area having magnetic resonance properties that are different from magnetic resonance properties of the substrate such that the plurality of indicia are capable of being imaged with a magnetic resonance imaging ('MRI') system
Data Source
AI summary
Systems and methods for manufacturing and using magnetic resonance (“MR”) visible labels or markers to encode information unique to the subject or object being imaged by a magnetic resonance imaging (“MRI”) system are provided. The use of such MR-visible labels or markers enables unique information associated with the subject or object being imaged to be encoded into the images of the subject or object. This information can be used to anonymize protected health information (“PHI”); to provide detailed information about a surgical simulation device, quality assurance phantom, or the like; to provide spatial orientation and registration information; or so on.