Document Detail

Diffusion-Weighted MR Neurography of Extremity Nerves With Unidirectional Motion-Probing Gradients at 3 T: Feasibility Study.
MedLine Citation:
PMID:  23617497     Owner:  NLM     Status:  In-Data-Review    
OBJECTIVE. The objective of our study was to show the feasibility and performance of diffusion-weighted MR neurography (MRN) of extremity nerves with unidirectional motion-probing gradients at 3 T. SUBJECTS AND METHODS. Forty-seven healthy volunteers and 10 patients underwent diffusion-weighted MRN of extremity nerves with unidirectional motion-probing gradients (anterior-posterior direction only) on a 3-T unit. Images were displayed using a maximum-intensity-projection technique. Two radiologists blindly and independently evaluated the imaging quality of extremity nerves on diffusion-weighted MRN images using a 4-point grading scale, with 4 indicating excellent quality and 1 indicating poor quality, and evaluated the relation of the lesion to adjacent nerves in patients. RESULTS. In volunteers, the long trajectories of major extremity nerves, including the radial, median, ulnar, sciatic, tibial, and common peroneal nerves, could be visualized 3D on diffusion-weighted MRN images. The mean imaging quality scores of all nerves for observers 1 and 2 were 3.68 ± 0.70 (SD) and 3.70 ± 0.66, respectively. Interobserver agreement was good (κ = 0.774). In patients, there was no discrepancy in imaging quality scores between observers. Scores of all nerves were 2-4 except in two patients with neurofibromatosis and one patient who underwent imaging soon after surgery. The extent of the lesions and the relationship of the lesions to the adjacent nerves were clearly depicted on diffusion-weighted MRN images of all patients. CONCLUSION. This preliminary study shows that 3-T diffusion-weighted MRN with unidirectional motion-probing gradients is feasible for 3D visualization of major extremity nerves. Diffusion-weighted MRN may enable nerve depiction and allow assessment of the anatomic relationship between lesions with diffusion restriction and adjacent nerves.
Lianxin Zhao; Guangbin Wang; Linlin Yang; Lebin Wu; Xiangtao Lin; Avneesh Chhabra
Related Documents :
12132947 - A comparison of computer-controlled versus manual on-line patient setup adjustment.
18723927 - Linac mechanic qa using a cylindrical phantom.
18068927 - Automatic correction of in-plane bulk motion artifacts in self-navigated radial mri.
9007867 - The efficient calculation of neurosurgically relevant volumes from computed tomographic...
8420787 - Value of ellipsoid volume masking in myocardial tomography.
16293057 - High-resolution, in vivo retinal imaging using adaptive optics and its future role in o...
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  AJR. American journal of roentgenology     Volume:  200     ISSN:  1546-3141     ISO Abbreviation:  AJR Am J Roentgenol     Publication Date:  2013 May 
Date Detail:
Created Date:  2013-04-26     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7708173     Medline TA:  AJR Am J Roentgenol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1106-14     Citation Subset:  AIM; IM    
1 Department of MR, Shandong Medical Imaging Research Institute, Shandong University, 324 Jingwu Rd, Jinan, Shandong 250021, China.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  Rotator cable: MRI study of its appearance in the intact rotator cuff with anatomic and histologic c...
Next Document:  Conventional and advanced MRI features of pediatric intracranial tumors: posterior fossa and suprase...