[Prognostic value of PET using 11C-methionine in patients with untreated cerebral gliomas].

We evaluated the prognostic role of positron emission tomography (PET) with 11C-methionine in adults with untreated supratentorial glioma. Histopathologic grading and clinical follow-up data were available from 147 patients with low-grade (n=74) and high-grade gliomas (n=73). Follow-up was conducted until the last clinical contact (n=79) or until death (n=68).

[Positron emission tomography in the diagnosis of recurrent growth of brain tumors].

The authors analyzed the results of 11C-methionine positron emission tomography (PET) in 101 patients with suspected recurrent brain tumor. The diagnosis was confirmed in 72 patients. The increased 11C-methionine uptake in the initial tumor area is considered to be a crucial PET evidence of a recurrent tumor.

[New criteria for positron emission tomographic diagnosis of brain glioma using 11C-methionine].

The study was based on the data of positron emission tomography (PET) and L-[methyl]-[11C]-methionine used in 117 patients with suspected brain tumor. PET data on 74 patients with histologically verified cerebral tumors were analyzed in detail. New additional criteria for assessing PET scans, which formed the PET syndromes of astrocytomas, anaplastic astrocytomas, and glioblastomas.

[Auditory and verbal agnosia in the left-handed patient: comparison of neuropsychological data, magnetic resonance and positron emission tomography].

A case of the post-traumatic auditory-and-speech agnosia in a left-handed female patient is presented. The patient (a professional painter) showed satisfactory recovery in painting, speech production, reading and writing, whereas a severe deficit in auditory recognition of speech, melodies and rhythms persisted over time. She was also impaired in some aspects of visual recognition including prosopagnosia.