Continuously moving table MRI with golden angle radial sampling
Year: 2014
Type: article
Abstract: PURPOSE: Continuously moving table (CMT) MRI is a high throughput technique that has multiple applications in whole-body imaging. In this work, CMT MRI based on golden angle (GA, 111.246° azimuthal step) radial sampling is developed at 3 Tesla (T), with the goal of increased flexibility in image reconstruction using arbitrary profile groupings. THEORY AND METHODS: CMT MRI with GA and linear angle (LA) schemes were developed for whole-body imaging at 3T with a table speed of 20 mm/s. Imaging was performed in phantoms and a human volunteer with extended z fields of view of up to 1.8 meters. Four separate LA and a single GA scan were performed to enable slice reconstructions at four different thicknesses. RESULTS: GA CMT MRI produced high image quality in phantoms and humans and allowed complete flexibility in reconstruction of slices with arbitrary slice thickness and position from a single data set. LA CMT MRI was constrained by predetermined parameters, required multiple scans and suffered from stair step artifacts that were not present in GA images. CONCLUSION: GA sampling provides a robust flexible approach to CMT whole-body MRI with the ability to reconstruct slices at arbitrary positions and thicknesses from a single scan.
Source: Magnetic Resonance in Medicine
DOI: 10.1002/mrm.25531
Authors: Saikat Sengupta, David S. Smith, E. Brian Welch
Institution: Vanderbilt University
Language: English
Subfield: Radiology, Nuclear Medicine and Imaging
Field: Medicine
Domain: Health Sciences
Open Access status: green
Awards: Brown Adipose Tissue Quantification Using Magnetic Resonance Imaging, Multidisciplinary Training in Basic and Translational Imaging of Cancer, Applying Compressed Sensing to Dynamic Contrast Enhanced MRI of Breast Cancer, The Vanderbilt Institute for Clinical and Translational Research (VICTR) UL1, Postdoctoral Training in Biomedical MRI and MRS
OpenAlex ID: W2121401238