Validation of quantitative magnetic resonance imaging protocols

Abstract

A verification technique for quality assurance of quantitative MRI methods compares a measured magnetism of a phantom having a range of T1 and T2 values measured by a clinically feasible acceleration protocol with a predicted value for the magnetism calculated from a set of reference T1 and T2 values measured on the phantom. The prediction is based on a relationship between a value from an acceleration protocol and a value from a reference measurement obtained by repeatedly scanning one or more moduli.

Description

technical field [0001] The present invention relates to a method of validating or quality assurance of a protocol for quantitative magnetic resonance imaging. Background technique [0002] Magnetic Resonance (MR) Imaging (MRI) has become ubiquitous as a medical imaging technique for forming images of patient anatomy and physiological processes in healthy and diseased patients. Essentially, MR images are two-dimensional displays of contrast caused by multiple magnetic differences in patient tissue. Many different types of sequences (i.e., different combinations of static and oscillating magnetic fields and RF pulses) are known and are often preprogrammed into MRI scanners in order to allow the radiographer to select the optimal sequence to detect tissue of interest in a particular patient or Abnormal organization. This traditional sequence weights multiple MR properties in a non-linear fashion and depends on the distance from the coil used to acquire the signal. In weighte...

AI Technical Summary

Problems solved by technology

However, this in itself does not guarantee that quantitative values ​​measured at different scanners or centers are comparable

Images