Document Detail

Spatially quantifying microscopic tumor invasion and proliferation using a voxel-wise solution to a glioma growth model and serial diffusion MRI.
MedLine Citation:
PMID:  21413079     Owner:  NLM     Status:  MEDLINE    
The purpose of this study was to develop a voxel-wise analytical solution to a glioma growth model using serial diffusion MRI. These cell invasion, motility, and proliferation level estimates (CIMPLE maps) provide quantitative estimates of microscopic tumor growth dynamics. After an analytical solution was found, noise simulations were performed to predict the effects that perturbations in apparent diffusion coefficient values and the time between apparent diffusion coefficient map acquisitions would have on the accuracy of CIMPLE maps. CIMPLE maps were then created for 53 patients with gliomas with WHO grades of II-IV. MR spectroscopy estimates of the choline-to-N-acetylaspartate ratio were compared to cell proliferation estimates in CIMPLE maps using Pearson's correlation analysis. Median differences in cell proliferation and diffusion rates between WHO grades were compared. A strong correlation (R(2) = 0.9714) and good spatial correspondence were observed between MR spectroscopy measurements of the choline-to-N-acetylaspartate ratio and CIMPLE map cell proliferation rate estimates. Estimates of cell proliferation and diffusion rates appear to be significantly different between low- (WHO II) and high-grade (WHO III-IV) gliomas. Cell diffusion rate (motility) estimates are highly dependent on the time interval between apparent diffusion coefficient map acquisitions, whereas cell proliferation rate estimates are additionally influenced by the level of noise present in apparent diffusion coefficient maps.
Benjamin M Ellingson; Peter S LaViolette; Scott D Rand; Mark G Malkin; Jennifer M Connelly; Wade M Mueller; Robert W Prost; Kathleen M Schmainda
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Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't     Date:  2010-11-30
Journal Detail:
Title:  Magnetic resonance in medicine : official journal of the Society of Magnetic Resonance in Medicine / Society of Magnetic Resonance in Medicine     Volume:  65     ISSN:  1522-2594     ISO Abbreviation:  Magn Reson Med     Publication Date:  2011 Apr 
Date Detail:
Created Date:  2011-03-17     Completed Date:  2011-08-12     Revised Date:  2014-03-19    
Medline Journal Info:
Nlm Unique ID:  8505245     Medline TA:  Magn Reson Med     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1131-43     Citation Subset:  IM    
Copyright Information:
Copyright © 2010 Wiley-Liss, Inc.
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MeSH Terms
Brain Neoplasms / pathology*,  physiopathology*
Cell Proliferation
Computer Simulation
Diffusion Magnetic Resonance Imaging / methods*
Glioblastoma / pathology*,  physiopathology*
Image Enhancement / methods
Image Interpretation, Computer-Assisted / methods*
Imaging, Three-Dimensional / methods
Models, Biological*
Neoplasm Invasiveness
Reproducibility of Results
Sensitivity and Specificity
Grant Support
R01 CA082500/CA/NCI NIH HHS; R01 CA082500-01A1/CA/NCI NIH HHS; R01-CA082500/CA/NCI NIH HHS; R21 CA109280/CA/NCI NIH HHS; R21 CA109280-01A1/CA/NCI NIH HHS; R21-CA109820/CA/NCI NIH HHS

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