title: Effects of radiotherapy determined by 11C-methyl-L-methionine positron emission tomography in patients with primary cerebral malignant lymphoma.
abstract: Two cases of histologically proven primary cerebral malignant lymphoma were examined serially with positron emission tomography (PET) using 11C-methyl-L-methionine (11C Met). Lesions delineated by 11C Met accumulation extended beyond enhancing areas on either X-ray computed tomography (CT) or magnetic resonance imaging. High uptake of 11C Met accurately showed biologically active and residual tumours, at a time when disappearance of a contrast-enhancing lesion on CT seemed to indicate involution. PET provides valuable information on the extent of tumour and assessment of radiotherapy in malignant lymphoma.
authors.affiliation: Neurosurgical Service, Akita University Hospital, Japan.
authors.forename: J
authors.initials: J
authors.lastname: Sawataishi
authors.forename: K
authors.initials: K
authors.lastname: Mineura
authors.forename: T
authors.initials: T
authors.lastname: Sasajima
authors.forename: M
authors.initials: M
authors.lastname: Kowada
authors.forename: A
authors.initials: A
authors.lastname: Sugawara
authors.forename: F
authors.initials: F
authors.lastname: Shishido
mesh_terms: D000368:Aged; D001932:Brain Neoplasms / Q000000981:diagnostic imaging / Q000532:radiotherapy*; D016371:Cranial Irradiation; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D015451:Leukemia, Lymphocytic, Chronic, B-Cell / Q000000981:diagnostic imaging / Q000532:radiotherapy*; D016403:Lymphoma, Large B-Cell, Diffuse / Q000000981:diagnostic imaging / Q000532:radiotherapy*; D008297:Male; D008875:Middle Aged; D011879:Radiotherapy Dosage; D014055:Tomography, Emission-Computed