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Research ArticleBRAIN

Relationship of MR-Derived Lactate, Mobile Lipids, and Relative Blood Volume for Gliomas in Vivo

Xiaojuan Li, Daniel B. Vigneron, Soonmee Cha, Edward E. Graves, Forrest Crawford, Susan M. Chang and Sarah J. Nelson
American Journal of Neuroradiology April 2005, 26 (4) 760-769;
Xiaojuan Li
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Daniel B. Vigneron
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Soonmee Cha
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Edward E. Graves
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Forrest Crawford
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Susan M. Chang
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Sarah J. Nelson
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Abstract

BACKGROUND AND PURPOSE: Gliomas are heterogeneous tumors with increased microvasculature, hypoxia, and necrosis. The purpose of this study was to examine the distribution and relationship of the MR-derived relative cerebral blood volume (rCBV), lactate (Lac), and mobile lipids (Lip), which have been proposed as markers for these phenomena of gliomas in vivo.

METHODS: Twenty-three patients with newly diagnosed gliomas were examined before surgical biopsy and/or resection (seven grade II, five grade III, and 11 grade IV), and 27 patients were studied after surgery but before radiation treatment and/or chemotherapy (11 grade II, two grade III, and 14 grade IV gliomas). Lac and Lip were estimated from Lac-edited three-dimensional MR spectroscopic images. Dynamic susceptibility–contrast MR imaging was applied to obtain perfusion-weighted images and rCBV maps.

RESULTS: Before surgical biopsy/resection, one low-grade and 12 of 16 high-grade gliomas had significantly elevated Lac. No low-grade and 10 of 16 high-grade gliomas had significantly elevated Lip. In presurgical high-grade gliomas, volumes of elevated Lip and macronecrosis were significantly correlated. rCBV was significantly increased in regions with elevated Lac. After we excluded macronecrosis, the rCBV for regions with elevated Lip but no Lac was significantly higher than rCBV in regions with elevated Lac but no Lip. After surgical biopsy/resection, more low-grade patients showed significantly elevated Lac and Lip than before.

CONCLUSION: The in vivo distribution of rCBV, Lac, and Lip, as evaluated with three-dimensional MR spectroscopic imaging, may help in the diagnosis and selection of the most appropriate therapy for patients with gliomas.

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American Journal of Neuroradiology: 26 (4)
American Journal of Neuroradiology
Vol. 26, Issue 4
1 Apr 2005
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Relationship of MR-Derived Lactate, Mobile Lipids, and Relative Blood Volume for Gliomas in Vivo
Xiaojuan Li, Daniel B. Vigneron, Soonmee Cha, Edward E. Graves, Forrest Crawford, Susan M. Chang, Sarah J. Nelson
American Journal of Neuroradiology Apr 2005, 26 (4) 760-769;

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Relationship of MR-Derived Lactate, Mobile Lipids, and Relative Blood Volume for Gliomas in Vivo
Xiaojuan Li, Daniel B. Vigneron, Soonmee Cha, Edward E. Graves, Forrest Crawford, Susan M. Chang, Sarah J. Nelson
American Journal of Neuroradiology Apr 2005, 26 (4) 760-769;
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