scholarly journals Automatic assessment of human gastric motility and emptying from dynamic 3D magnetic resonance imaging

2021 ◽  
Author(s):  
Kun‐Han Lu ◽  
Zhongming Liu ◽  
Deborah Jaffey ◽  
John M. Wo ◽  
Kristine M. Mosier ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Gastric Motility ◽  
Resonance Imaging ◽  
Automatic Assessment ◽  
3D Magnetic Resonance Imaging

scholarly journals Automatic Assessment of Human Gastric Motility and Emptying from Dynamic 3D Magnetic Resonance Imaging

2020 ◽  
Author(s):  
Kun-Han Lu ◽  
Zhongming Liu ◽  
Deborah Jaffey ◽  
John Wo ◽  
Kristine Mosier ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Image Processing ◽  
Gastric Emptying ◽  
Magnetic Resonance ◽  
Gastric Motility ◽  
Type I ◽  
Resonance Imaging ◽  
Automatic Assessment ◽  
Processing Pipeline ◽  
Healthy Humans

Background: Time-sequenced magnetic resonance imaging (MRI) of the stomach is an emerging technique for non-invasive assessment of gastric emptying and motility. However, an automated and systematic image processing pipeline for analyzing dynamic 3D (i.e., 4D) gastric MRI data is not yet available. This study introduces an MRI protocol for imaging the stomach with high spatiotemporal isotropic resolution and provides an integrated pipeline for assessing gastric emptying and motility simultaneously. Methods: Diet contrast-enhanced MRI images were acquired from seventeen healthy humans after they consumed a naturalistic contrast meal. An automated image processing pipeline was developed to correct for respiratory motion, to segment and compartmentalize the lumen-enhanced stomach, to quantify total gastric and compartmental emptying, and to compute and visualize gastric motility on the surface of the stomach. Key Results: The gastric segmentation reached an accuracy of 91.10±0.43% with the Type-I error and Type-II error being 0.11±0.01% and 0.22±0.01%, respectively. Gastric volume decreased 34.64±2.8% over 1 hour where the emptying followed a linear-exponential pattern. The gastric motility showed peristaltic patterns with a median = 4 wave-fronts (range 3 - 6) and a mean frequency of 3.09±0.07 cycles per minute (CPM). Further, the contractile amplitude was stronger in the antrum than in the corpus (antrum vs. corpus: 5.18±0.24 vs. 3.30±0.16 mm; p < .001). Conclusions & Inferences: The automated, streamlined software can process dynamic 3D MRI images and produce comprehensive and personalized profiles of gastric motility and emptying. This software will facilitate the application of MRI for monitoring gastric dynamics in research and clinical settings.

Main anatomical features of the calcarine sulcus: a 3D magnetic resonance imaging at 3T study

2018 ◽  
Vol 41 (2) ◽  
pp. 181-186
Author(s):  
Ahmad Rachid El Mohamad ◽  
Laurent Tatu ◽  
Thierry Moulin ◽  
Sami Fadoul ◽  
Fabrice Vuillier
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Resonance Imaging ◽  
Anatomical Features ◽  
3D Magnetic Resonance Imaging

scholarly journals Acute effects of vagus nerve stimulation parameters on gastric motility assessed with magnetic resonance imaging

2020 ◽  
Vol 32 (7) ◽  
Author(s):  
Kun‐Han Lu ◽  
Jiayue Cao ◽  
Robert Phillips ◽  
Terry L. Powley ◽  
Zhongming Liu
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Vagus Nerve ◽  
Nerve Stimulation ◽  
Gastric Motility ◽  
Vagus Nerve Stimulation ◽  
Acute Effects ◽  
Resonance Imaging ◽  
Stimulation Parameters

Functional 2D and 3D magnetic resonance imaging of motor cortex stimulation at high spatial resolution using standard 1.5 T imager

1994 ◽  
Vol 12 (1) ◽  
pp. 9-15 ◽  
Author(s):  
Lothar R. Schad ◽  
Frederik Wenz ◽  
Michael V. Knopp ◽  
Klaus Baudendistel ◽  
Edgar Müller ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Motor Cortex ◽  
Spatial Resolution ◽  
High Spatial Resolution ◽  
Motor Cortex Stimulation ◽  
Resonance Imaging ◽  
2D And 3D ◽  
3D Magnetic Resonance Imaging

Relevance of 3D magnetic resonance imaging sequences in diagnosing basal subarachnoid neurocysticercosis

Acta Tropica ◽  
2015 ◽  
Vol 152 ◽  
pp. 60-65 ◽  
Author(s):  
Roger Carrillo Mezo ◽  
Javier Lara García ◽  
Mariana Arroyo ◽  
Agnès Fleury
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Resonance Imaging ◽  
3D Magnetic Resonance Imaging

scholarly journals Human visual motion areas determined individually by magnetoencephalography and 3D magnetic resonance imaging

2000 ◽  
Vol 11 (1) ◽  
pp. 33-45 ◽  
Author(s):  
Masahiko Bundo ◽  
Yoshiki Kaneoke ◽  
Suguru Inao ◽  
Jun Yoshida ◽  
Akinori Nakamura ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Visual Motion ◽  
Resonance Imaging ◽  
3D Magnetic Resonance Imaging

scholarly journals Routine 3D magnetic resonance imaging of joints

2011 ◽  
Vol 33 (4) ◽  
pp. 758-771 ◽  
Author(s):  
Richard Kijowski ◽  
Garry E. Gold
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Resonance Imaging ◽  
3D Magnetic Resonance Imaging

Microstructure and water distribution of commercial pasta studied by microscopy and 3D magnetic resonance imaging

2014 ◽  
Vol 62 ◽  
pp. 644-652 ◽  
Author(s):  
Thomas Steglich ◽  
Diana Bernin ◽  
Magnus Röding ◽  
Magnus Nydén ◽  
Annelie Moldin ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Water Distribution ◽  
Resonance Imaging ◽  
3D Magnetic Resonance Imaging
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