Metabolic brain imaging correlated with clinical features of brain tumors
Nineteen adults with brain tumors have been studied with positron emission tomography utilizing FDG. Fourteen had biopsy proven cerebral malignant glioma, one each had meningioma, hemangiopericytoma, primitive neuroectodermal tumor (PNET), two had unbiopsied lesions, and one patient had an area of biopsy proven radiation necrosis. Three different patterns of glucose metabolism are observed: marked increase in metabolism at the site of the known tumor in (10 high grade gliomas and the PNET), lower than normal metabolism at the tumor (in 1 grade II glioma, 3 grade III gliomas, 2 unbiopsied low density nonenhancing lesions, and the meningioma), no abnormality (1 enhancing glioma, the hemangiopericytoma and the radiation necrosis.) The metabolic rate of the tumor or the surrounding brain did not appear to be correlated with the history of previous irradiation or chemotherapy. Decreased metabolism was frequently observed in the rest of the affected hemisphere and in the contralateral cerebellum. Tumors of high grade or with enhancing CT characteristics were more likely to show increased metabolism. Among the patients with proven gliomas, survival after PETT scan tended to be longer for those with low metabolic activity tumors than for those with highly active tumors. The authors conclude that PETT may help to predict the malignant potential of tumors, and may add useful clinical information to the CT scan.
- Research Organization:
- Univ. of Pennsylvania School of Medicine, Philadelphia, PA
- OSTI ID:
- 5872805
- Report Number(s):
- CONF-850611-; TRN: 87-039563
- Journal Information:
- J. Nucl. Med.; (United States), Vol. 26:5; Conference: 32. annual meeting of the Society of Nuclear Medicine, Houston, TX, USA, 2 Jun 1985
- Country of Publication:
- United States
- Language:
- English
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59 BASIC BIOLOGICAL SCIENCES
BRAIN
ANATOMY
BASAL METABOLISM
NEOPLASMS
POSITRON COMPUTED TOMOGRAPHY
FLUORODEOXYGLUCOSE
METABOLISM
DIAGNOSIS
CEREBELLUM
CEREBRAL CORTEX
CEREBRUM
DIAGNOSTIC USES
FLUORINE 18
GLUCOSE
ALDEHYDES
ANTIMETABOLITES
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
BODY
CARBOHYDRATES
CENTRAL NERVOUS SYSTEM
COMPUTERIZED TOMOGRAPHY
DIAGNOSTIC TECHNIQUES
DISEASES
DRUGS
EMISSION COMPUTED TOMOGRAPHY
FLUORINE ISOTOPES
HEXOSES
HOURS LIVING RADIOISOTOPES
ISOTOPES
LIGHT NUCLEI
MONOSACCHARIDES
NERVOUS SYSTEM
NUCLEI
ODD-ODD NUCLEI
ORGANIC COMPOUNDS
ORGANS
RADIOISOTOPES
SACCHARIDES
TOMOGRAPHY
USES
550602* - Medicine- External Radiation in Diagnostics- (1980-)
550501 - Metabolism- Tracer Techniques
550801 - Morphology- Tracer Techniques