Volume 36, Issue 5 pp. 1072-1082
Original Research

Quantitative short echo time 1H MRSI of the peripheral edematous region of human brain tumors in the differentiation between glioblastoma, metastasis, and meningioma

J.P. Wijnen PhD

J.P. Wijnen PhD

Department of Radiology, Radboud University Medical Centre Nijmegen, Nijmegen, The Netherlands

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A.J.S. Idema MD

A.J.S. Idema MD

Department of Radiology, Radboud University Medical Centre Nijmegen, Nijmegen, The Netherlands

Department of Neurosurgery, Radboud University Medical Centre Nijmegen, Nijmegen, The Netherlands

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M. Stawicki MSc

M. Stawicki MSc

Department of Radiology, Radboud University Medical Centre Nijmegen, Nijmegen, The Netherlands

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M.W. Lagemaat MSc

M.W. Lagemaat MSc

Department of Radiology, Radboud University Medical Centre Nijmegen, Nijmegen, The Netherlands

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P. Wesseling PhD

P. Wesseling PhD

Department of Pathology, Radboud University Medical Centre Nijmegen, Nijmegen, The Netherlands

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A.J. Wright PhD

A.J. Wright PhD

Department of Radiology, Radboud University Medical Centre Nijmegen, Nijmegen, The Netherlands

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T.W.J. Scheenen PhD

T.W.J. Scheenen PhD

Department of Radiology, Radboud University Medical Centre Nijmegen, Nijmegen, The Netherlands

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A. Heerschap PhD

Corresponding Author

A. Heerschap PhD

Department of Radiology, Radboud University Medical Centre Nijmegen, Nijmegen, The Netherlands

Department of Radiology (667), Radboud University Nijmegen Medical Center, Geertgroote plein 10, P.O. Box 9101, 6500 HB Nijmegen, The NetherlandsSearch for more papers by this author
First published: 28 June 2012
Citations: 26

Abstract

Purpose:

To assess metabolite levels in peritumoral edematous (PO) and surrounding apparently normal (SAN) brain regions of glioblastoma, metastasis, and meningioma in humans with 1H-MRSI to find biomarkers that can discriminate between tumors and characterize infiltrative tumor growth.

Materials and Methods:

Magnetic resonance (MR) spectra (semi-LASER MRSI, 30 msec echo time, 3T) were selected from regions of interest (ROIs) under MRI guidance, and after quality control of MR spectra. Statistical testing between patient groups was performed for mean metabolite ratios of an entire ROI and for the highest value within that ROI.

Results:

The highest ratios of the level of choline compounds and the sum of myo-inositol and glycine over N-acetylaspartate and creatine compounds were significantly increased in PO regions of glioblastoma versus that of metastasis and meningioma. In the SAN region of glioblastoma some of these ratios were increased. Differences were less prominent for metabolite levels averaged over entire ROIs.

Conclusion:

Specific metabolite ratios in PO and SAN regions can be used to discriminate glioblastoma from metastasis and meningioma. An analysis of these ratios averaged over entire ROIs and those with most abnormal values indicates that infiltrative tumor growth in glioblastoma is inhomogeneous and extends into the SAN region. J. Magn. Reson. Imaging 2012;36:1072–1082. © 2012 Wiley Periodicals, Inc.

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