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Bigler ED, Skiles M, Wade BSC, Abildskov TJ, Tustison NJ, Scheibel RS, Newsome MR, Mayer AR, Stone JR, Taylor BA, Tate DF, Walker WC, Levin HS, Wilde EA. FreeSurfer 5.3 versus 6.0: are volumes comparable? A Chronic Effects of Neurotrauma Consortium study. Brain Imaging Behav 2021; 14:1318-1327. [PMID: 30511116 DOI: 10.1007/s11682-018-9994-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Automated neuroimaging methods like FreeSurfer ( https://surfer.nmr.mgh.harvard.edu/ ) have revolutionized quantitative neuroimaging analyses. Such analyses provide a variety of metrics used for image quantification, including magnetic resonance imaging (MRI) volumetrics. With the release of FreeSurfer version 6.0, it is important to assess its comparability to the widely-used previous version 5.3. The current study used data from the initial 249 participants in the ongoing Chronic Effects of Neurotrauma Consortium (CENC) multicenter observational study to compare the volumetric output of versions 5.3 and 6.0 across various regions of interest (ROI). In the current investigation, the following ROIs were examined: total intracranial volume, total white matter volume, total ventricular volume, total gray matter volume, and right and left volumes for the thalamus, pallidum, putamen, caudate, amygdala and hippocampus. Absolute ROI volumes derived from FreeSurfer 6.0 differed significantly from those obtained using version 5.3. We also employed a clinically-based evaluation strategy to compare both versions in their prediction of age-mediated volume reductions (or ventricular increase) in the aforementioned structures. Statistical comparison involved both general linear modeling (GLM) and random forest (RF) methods, where cross-validation error was significantly higher using segmentations from FreeSurfer version 5.3 versus version 6.0 (GLM: t = 4.97, df = 99, p value = 2.706e-06; RF: t = 4.85, df = 99, p value = 4.424e-06). Additionally, the relative importance of ROIs used to predict age using RFs differed between FreeSurfer versions, indicating substantial differences in the two versions. However, from the perspective of correlational analyses, fitted regression lines and their slopes were similar between the two versions, regardless of version used. While absolute volumes are not interchangeable between version 5.3 and 6.0, ROI correlational analyses appear to yield similar results, suggesting the interchangeability of ROI volume for correlational studies.
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Affiliation(s)
- Erin D Bigler
- Psychology Department and Neuroscience Center, Brigham Young University, Provo, UT, 84602, USA.
| | - Marc Skiles
- Psychology Department and Neuroscience Center, Brigham Young University, Provo, UT, 84602, USA
| | - Benjamin S C Wade
- Missouri Institute of Mental Health, University of Missouri-St. Louis, St. Louis, MO, USA.,Imaging Genetics Center, University of Southern California, Marina del Rey, CA, USA.,Ahmanson-Lovelace Brain Mapping Center, Department of Neurology, UCLA, Los Angeles, CA, USA
| | - Tracy J Abildskov
- Psychology Department and Neuroscience Center, Brigham Young University, Provo, UT, 84602, USA
| | - Nick J Tustison
- Department of Radiology and Medical Imaging, University of Virginia, Charlottesville, VA, USA
| | - Randall S Scheibel
- Michael DeBakey VA Medical Center and Baylor College of Medicine, Houston, TX, USA
| | - Mary R Newsome
- Michael DeBakey VA Medical Center and Baylor College of Medicine, Houston, TX, USA
| | | | - James R Stone
- Department of Radiology and Medical Imaging, University of Virginia, Charlottesville, VA, USA
| | | | - David F Tate
- Missouri Institute of Mental Health, University of Missouri-St. Louis, St. Louis, MO, USA
| | | | - Harvey S Levin
- Michael DeBakey VA Medical Center and Baylor College of Medicine, Houston, TX, USA
| | - Elisabeth A Wilde
- Michael DeBakey VA Medical Center and Baylor College of Medicine, Houston, TX, USA.,University of Utah, Salt Lake City, UT, USA
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Yoder JH, Peloquin JM, Song G, Tustison NJ, Moon SM, Wright AC, Vresilovic EJ, Gee JC, Elliott DM. Internal three-dimensional strains in human intervertebral discs under axial compression quantified noninvasively by magnetic resonance imaging and image registration. J Biomech Eng 2015; 136:1897007. [PMID: 25109533 DOI: 10.1115/1.4028250] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2014] [Accepted: 08/12/2014] [Indexed: 11/08/2022]
Abstract
Study objectives were to develop, validate, and apply a method to measure three-dimensional (3D) internal strains in intact human discs under axial compression. A custom-built loading device applied compression and permitted load-relaxation outside of the magnet while also maintaining compression and hydration during imaging. Strain was measured through registration of 300 μm isotropic resolution images. Excellent registration accuracy was achieved, with 94% and 65% overlap of disc volume and lamellae compared to manual segmentation, and an average Hausdorff, a measure of distance error, of 0.03 and 0.12 mm for disc volume and lamellae boundaries, respectively. Strain maps enabled qualitative visualization and quantitative regional annulus fibrosus (AF) strain analysis. Axial and circumferential strains were highest in the lateral AF and lowest in the anterior and posterior AF. Radial strains were lowest in the lateral AF, but highly variable. Overall, this study provided new methods that will be valuable in the design and evaluation surgical procedures and therapeutic interventions.
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Hagspiel KD, Altes TA, Mugler JP, Spellman MJ, Mata JF, Tustison NJ, Brookeman JR. MR virtual colonography using hyperpolarized (3)He as an endoluminal contrast agent: demonstration of feasibility. Magn Reson Med 2000; 44:813-6. [PMID: 11064418 DOI: 10.1002/1522-2594(200011)44:5<813::aid-mrm21>3.0.co;2-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Hyperpolarized gas MR virtual colonography was performed in plastic phantoms and in the dog colon. (3)He was laser polarized in a prototype commercial system. 2D and 3D gradient echo sequences were used to image the noble gas-filled structures. The hyperpolarized (3)He within the plastic tube and colon lumen produced high signal, providing excellent contrast from the surrounding structures. The virtual colonoscopic analysis of the canine dataset allowed visualization of the colonic features and the colonic wall from inside the colon. (3)He colonoscopy is a novel technique to visualize the colon with MRI with the application of an inert gaseous endoluminal contrast agent.
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Affiliation(s)
- K D Hagspiel
- Department of Radiology, University of Virginia Health Sciences Center, Charlottesville, Virginia 22908, USA.
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