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Journal of Neuro-Oncology

, Volume 5, Issue 3, pp 277–285 | Cite as

Positron emission tomographic evaluation of radiochemotherapeutic effect on regional cerebral hemocirculation and metabolism in patients with gliomas

  • Katsuyoshi Mineura
  • Tsuneo Yasuda
  • Masayoshi Kowada
  • Toshihide Ogawa
  • Fumio Shishido
  • Kazuo Uemura
Article

Summary

Hemocirculatory and metabolic changes in tumor regions and the remote brain structure were analyzed using oxygen-15 and fluorine-18 positron emission tomography (PET) in eight patients with gliomas after radiation and chemotherapy of 1-(4-amino-2-methyl-5-pyrimidinyl)methyl-3-(2-chloroethyl)-3-nitrosourea hydrochloride (ACNU) and N-(2-tetrahydrofuryl)-5-fluorouracil (FT 207).

In the tumor regions after the radiochemotherapy, regional cerebral blood flow (rCBF) and cerebral blood volume (rCBV) varied widely and there was a tendency for oxygen consumption (rCMRO2) to fall. The change in glucose consumption (rCMRGI) was especially noteworthy with regard to clinical correlations. Six patients with decreased rCMRGI values had 16010 to 29010 regressions in tumor size measured by X-ray computerized tomography (CT), and showed some period of clinical relief. In contrast, one patient with an increased rCMRGI value had some progression of tumor growth, and there were no clinical amelioration. The hemocirculation and metabolism of the contralateral gray matter seem to fluctuate by various factors as intracranial pressure and the effectiveness of the therapy.

In gliomas therapy, tumor rCMRGI values can be a good indicator of therapeutic effectiveness.

Key words

positron emission tomography (PET) glioma glucose metabolism hemocirculation radiation therapy chemotherapy 

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Copyright information

© Martinus Nijhoff Publishers 1987

Authors and Affiliations

  • Katsuyoshi Mineura
    • 1
  • Tsuneo Yasuda
    • 1
  • Masayoshi Kowada
    • 1
  • Toshihide Ogawa
    • 2
  • Fumio Shishido
    • 2
  • Kazuo Uemura
    • 2
  1. 1.Neurosurgical ServiceAkita University HospitalAkitaJapan
  2. 2.Department of Radiology and Nuclear MedicineResearch Institute for Brain and Blood Vessels AkitaAkitaJapan

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