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American Journal of Neuroradiology
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Abstract

Noninvasive evaluation of malignancy of brain tumors with proton MR spectroscopy.

H Shimizu, T Kumabe, T Tominaga, T Kayama, K Hara, Y Ono, K Sato, N Arai, S Fujiwara and T Yoshimoto
American Journal of Neuroradiology April 1996, 17 (4) 737-747;
H Shimizu
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T Kumabe
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T Tominaga
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T Kayama
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K Hara
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Y Ono
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K Sato
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N Arai
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S Fujiwara
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T Yoshimoto
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Abstract

PURPOSE To test clinical proton MR spectroscopy as a noninvasive method for predicting tumor malignancy.

METHODS Water-suppressed single-voxel point resolved spectroscopy in the frontal white matter of 17 healthy volunteers and 25 patients with brain tumors yielded spectra with peaks of N-acetyl aspartate (NAA), choline-containing compounds (Cho), creatine/phosphocreatine (Cre), and lactate. These peak intensities were semiquantitated as a ratio to that of the external reference. The validity of the semiquantitation was first evaluated through phantom and volunteer experiments.

RESULTS The variation in measurements of the designated region in the volunteers was less than 10%. Normal ranges of NAA/reference, Cho/reference, and Cre/reference were 3.59 +/- 0.68, 1.96 +/- 0.66, and 1.53 +/- 0.64 (mean +/- SD), respectively. In 17 gliomas, the Cho/reference value in high-grade gliomas was significantly higher than in low-grade gliomas. Levels of NAA/reference were also significantly different in low-grade and high-grade malignancy. In eight meningiomas (four newly diagnosed and four recurrent), the level of Cho/reference was significantly higher in recurrent meningiomas than in normal white matter or in newly diagnosed meningiomas.

CONCLUSIONS Higher grades of brain tumors in this study were associated with higher Cho/reference and lower NAA/reference values. These results suggest that clinical proton MR spectroscopy may help predict tumor malignancy.

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American Journal of Neuroradiology
Vol. 17, Issue 4
1 Apr 1996
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Cite this article
H Shimizu, T Kumabe, T Tominaga, T Kayama, K Hara, Y Ono, K Sato, N Arai, S Fujiwara, T Yoshimoto
Noninvasive evaluation of malignancy of brain tumors with proton MR spectroscopy.
American Journal of Neuroradiology Apr 1996, 17 (4) 737-747;

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Noninvasive evaluation of malignancy of brain tumors with proton MR spectroscopy.
H Shimizu, T Kumabe, T Tominaga, T Kayama, K Hara, Y Ono, K Sato, N Arai, S Fujiwara, T Yoshimoto
American Journal of Neuroradiology Apr 1996, 17 (4) 737-747;
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