MR System Calibration Preparation Sequence Optimization
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Solution Overview
Problem
Current MR system calibration methods are time-consuming due to multiple sub-steps with dependent iterations and unpredictable time delays, particularly in communication between the user computer and system control computer, which extend the overall calibration time.
Innovation Solution
A method where all necessary calibration steps are prepared in a single preparation step, reducing the need for extensive communication and allowing precise planning of calibration procedures in the microsecond range, with the system control computer initiating these steps after preparation is complete.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple stand-alone calibration steps are carried out with sequential preparation and communication between computer and system control computer, then each calibration parameter can be adjusted to the test subject, but the overall calibration time is extended due to unpredictable time delays
Solution Approach 1:
The patent combines multiple stand-alone calibration steps into a single integrated calibration process. Instead of executing frequency calibration, voltage calibration, and B0 field calibration as separate operations with independent preparation and communication cycles, the system prepares and executes all calibration steps in one coordinated sequence, eliminating redundant communication overhead and reducing total calibration time
Solution Approach 2:
The system performs preliminary preparation of all calibration steps before execution begins. The computer prepares the complete calibration sequence including all necessary parameters and sequences in advance, then transmits this prepared calibration package to the system control computer in a single operation, allowing the actual calibration to proceed without intermittent communication delays
2Reliability
If preparation steps are carried out separately for each calibration step with repeated communication cycles, then each calibration can be executed with proper setup, but the number of communication cycles and overall procedure complexity increases
Solution Approach 1:
The patent merges multiple separate preparation operations into a single comprehensive preparation phase. Instead of preparing frequency calibration, voltage calibration, and B0 field calibration independently with separate communication cycles, the system prepares all calibration parameters and sequences together in one operation, reducing the number of communication interfaces activated and simplifying the overall system workflow
Solution Approach 2:
The calibration system is designed to handle multiple calibration types (frequency, voltage, B0 field) through a universal preparation and execution framework. A single preparation routine can configure and initiate different calibration sequences, and the system control computer executes various calibration steps through a unified interface, reducing the need for separate dedicated pathways for each calibration type
Data Source
AI summary
In a method for making calibration measurements in a magnetic resonance (MR) system, in order to acquire an MR image of an examination subject, wherein the MR unit has a computer for operating the MR scanner, and a system control computer designed to control multiple system components of the MR scanner, a preparation step is executed by the computer to prepare a first calibration step, in which a first parameter of a system component is matched to the examination subject via the system control computer, and to prepare a second calibration step, in which a second parameter of a system component is matched to the examination subject via the system control computer. The first calibration step is executed by the system control computer as is the second calibration step. The preparation step is executed by the computer to prepare one of the first or second calibration steps before one of the calibration steps is initiated by the system control computer.