| PDE-based spatial smoothing: a practical demonstration of impacts on MRI brain extraction, tissue segmentation and registration. | |
| | |
MedLine Citation:
|
PMID: 21531104 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
|
Spatial smoothing is typically used to denoise magnetic resonance imaging (MRI) data. Gaussian smoothing kernels, associated with heat equations or isotropic diffusion (ISD), are widely adopted for this purpose because of their easy implementation and efficient computation, but despite these advantages, Gaussian smoothing kernels blur the edges, curvature and texture of images. To overcome these issues, researchers have proposed anisotropic diffusion (ASD) and non-local means [i.e., diffusion (NLD)] kernels. However, these new filtering paradigms are rarely applied to MRI analyses. In the current study, using real degraded MRI data, we demonstrated the effect of denoising using ISD, ASD and NLD kernels. Furthermore, we evaluated their impact on three common preprocessing steps of MRI data analysis: brain extraction, segmentation and registration. Results suggest that NLD-based spatial smoothing is most effective at improving the quality of MRI data preprocessing and thus should become the new standard method of smoothing in MRI data processing. |
| | |
Authors:
|
Xiu-Xia Xing; You-Long Zhou; Jonathan S Adelstein; Xi-Nian Zuo |
Related Documents
:
|
10885694 - Parathyroid imaging with pertechnetate plus perchlorate/mibi subtraction scintigraphy: ... 262204 - Clinical evaluation of thyroid ct values in various thyroid conditions. 7747254 - Localization studies in patients with hyperparathyroidism. 9453404 - Localization of parathyroid glands in hemodialysis patients using tc-99m sestamibi imag... 10077024 - Detection of hepatocellular carcinoma: comparison of t2-weighted breath-hold fast spin-... 14718794 - Magnetic resonance imaging of the metal clip in a breast: safety and its availability a... |
Publication Detail:
|
Type: JOURNAL ARTICLE Date: 2011-4-28 |
Journal Detail:
|
Title: Magnetic resonance imaging Volume: - ISSN: 1873-5894 ISO Abbreviation: - Publication Date: 2011 Apr |
Date Detail:
|
Created Date: 2011-5-2 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 8214883 Medline TA: Magn Reson Imaging Country: - |
Other Details:
|
Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
|
Copyright © 2011 Elsevier Inc. All rights reserved. |
Affiliation:
|
Laboratory for Functional Connectome and Development, Key Laboratory of Behavioral Science, Institute of Psychology, Chinese Academy of Sciences, Beijing, 100101, China; College of Applied Sciences, Beijing University of Technology, Beijing, 100124, China. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Accelerating image registration of MRI by GPU-based parallel computation.
Next Document: On the relationship between the apparent diffusion coefficient and extravascular extracellular volum...