作者
Julien Cohen‐Adad, Eva Alonso‐Ortiz, Stephanie Alley, Maria Marcella Lagana, Francesca Baglio, Signe Johanna Vannesjo, Haleh Karbasforoushan, Maryam Seif, Alan C Seifert, Junqian Xu, Joo‐Won Kim, René Labounek, Lubomír Vojtíšek, Marek Dostál, Jan Valošek, Rebecca S Samson, Francesco Grussu, Marco Battiston, Claudia AM Gandini Wheeler‐Kingshott, Marios C Yiannakas, Guillaume Gilbert, Torben Schneider, Brian Johnson, Ferran Prados
发表日期
2022/4
期刊
Magnetic Resonance in Medicine
简介
Purpose
Spinal cord gray‐matter imaging is valuable for a number of applications, but remains challenging. The purpose of this work was to compare various MRI protocols at 1.5 T, 3 T, and 7 T for visualizing the gray matter.
Methods
In vivo data of the cervical spinal cord were collected from nine different imaging centers. Data processing consisted of automatically segmenting the spinal cord and its gray matter and co‐registering back‐to‐back scans. We computed the SNR using two methods (SNR_single using a single scan and SNR_diff using the difference between back‐to‐back scans) and the white/gray matter contrast‐to‐noise ratio per unit time. Synthetic phantom data were generated to evaluate the metrics performance. Experienced radiologists qualitatively scored the images. We ran the same processing on an open‐access multicenter data set of the spinal cord MRI (N = 267 participants).
Results …
学术搜索中的文章
J Cohen‐Adad, E Alonso‐Ortiz, S Alley, MM Lagana… - Magnetic resonance in medicine, 2022