Magnetic Resonance Echo Train Length Optimization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Operators of magnetic resonance apparatuses face challenges in setting optimal echo train length parameters, which can lead to prolonged scan times and compromised image quality due to the difficulty in determining the suitable echo train length for high-quality imaging.
Innovation Solution
A magnetic resonance apparatus and program that determine an upper limit value for echo train length based on echo spacing and the number of views in k-space, allowing for automatic calculation of an echo train length that minimizes image degradation and optimizes scan conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the operator manually adjusts the echo train length to reduce scan time, then the scan time is reduced, but the image quality deteriorates due to inappropriate parameter selection
Solution Approach 1:
The system performs self-calculation of the optimal echo train length by automatically computing the upper limit value based on echo spacing and determining the appropriate value based on k-space views, eliminating the need for operator trial-and-error adjustment while ensuring image quality requirements are met
Solution Approach 2:
The system changes the parameter determination approach from manual operator input to automated calculation based on echo spacing and k-space views, dynamically determining the optimal echo train length that balances scan time reduction with image quality maintenance
2Manufacturing precision
If the operator specifies a longer echo train length to improve image quality, then image quality improves, but the scan time increases
Solution Approach 1:
The system automatically determines the optimal echo train length by calculating the upper limit based on echo spacing and considering the number of k-space views, providing self-service parameter optimization that simultaneously considers both image quality and scan time efficiency
Solution Approach 2:
The system transforms the parameter selection from operator discretion to automated determination, using echo spacing and k-space view count to calculate an optimal echo train length that achieves image quality without unnecessary scan time extension
3Ease of operation
If the operator manually determines the echo train length through trial and error, then the operator can find a suitable value, but the operation complexity and stress increase
Solution Approach 1:
The system performs self-determination of the echo train length parameter by automatically calculating the upper limit from echo spacing and determining the final value based on k-space views, completely eliminating the need for operator trial-and-error and reducing operational complexity
Solution Approach 2:
The system introduces an automated calculation mechanism as an intermediary between the imaging requirements and parameter setting, using echo spacing and k-space view information to mediate and determine the optimal echo train length without direct operator intervention
Data Source
AI summary
An MR apparatus 100 performs a sequence for acquiring an echo train from a subject. The MR apparatus 100 comprises upper-limit-value determining unit for determining an upper limit value etl_max for the echo train length based on a value X1 and a value X2, the value X1 including echo spacing ESP and a lower limit value TEz_max for a maximum echo time. The MR apparatus 100 further comprises unit for obtaining an echo train length based on the upper limit value etl_max for the echo train length and a number of views ypoint in which data acquisition is performed.