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Titolo:
Presurgical evaluation of the motor hand area with functional MR imaging in patients with tumors and dysplastic lesions
Autore:
Achten, E; Jackson, GD; Cameron, JA; Abbott, DF; Stella, DL; Fabinyi, GCA;
Indirizzi:
Austinustraliariat Med Ctr, Brain Imaging Res Inst, Heidelberg, Vic 3084, A Austin & Repatriat Med Ctr Heidelberg Vic Australia 3084 erg, Vic 3084, A Austin & Repatriat Med Ctr, Dept Radiol, Heidelberg, Vic 3084, Australia Austin & Repatriat Med Ctr Heidelberg Vic Australia 3084 3084, Australia Austin & Repatriat Med Ctr, Dept Neurosurg, Heidelberg, Vic 3084, Australia Austin & Repatriat Med Ctr Heidelberg Vic Australia 3084 3084, Australia Austin & Repatriat Med Ctr, Dept Neurol, Heidelberg, Vic 3084, Australia Austin & Repatriat Med Ctr Heidelberg Vic Australia 3084 3084, Australia
Titolo Testata:
RADIOLOGY
fascicolo: 2, volume: 210, anno: 1999,
pagine: 529 - 538
SICI:
0033-8419(199902)210:2<529:PEOTMH>2.0.ZU;2-C
Fonte:
ISI
Lingua:
ENG
Soggetto:
REGIONAL BRAIN ACTIVITY; MAGNETIC-RESONANCE; SENSORIMOTOR CORTEX; 1.5 T; ARTERIOVENOUS-MALFORMATIONS; SENSORY STIMULATION; EVOKED-POTENTIALS; LOCALIZATION; ACTIVATION; TOPOGRAPHY;
Keywords:
brain, function; brain, neoplasms, MR; epilepsy; magnetic resonance (MR);
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Life Sciences
Citazioni:
48
Recensione:
Indirizzi per estratti:
Indirizzo: Jackson, GD Austin & Repatriat Med Ctr, Brain Imaging Res Inst, Studley Rd, Heidelberg, Austin & Repatriat Med Ctr Studley Rd Heidelberg Vic Australia 3084
Citazione:
E. Achten et al., "Presurgical evaluation of the motor hand area with functional MR imaging in patients with tumors and dysplastic lesions", RADIOLOGY, 210(2), 1999, pp. 529-538

Abstract

PURPOSE: To test an optimized functional magnetic resonance (MR) imaging procedure to depict the motor hand representation area (HRA) in patients with epilepsy lesions near the central sulcus. MATERIALS AND METHODS: Fast low-angle shot MR imaging was performed with an oblique single-section imaging technique in eight control subjects (10 hemispheres) and six patients (12 hemispheres). Three series of five activation images (obtained while subjects performed repetitive finger-to-thumb opposition movements) and five rest images were acquired. Each hemisphere was studied in three adjacent sections. Difference maps (obtained with simple subtraction between activation and rest images) were compared with t-test maps. RESULTS: In control subjects, the HRA was visible in 27 of 30 sections. Qualitatively, activation was seen better on t-test maps in 14 and on difference maps in four of these sections. In all patients, motor activation couldbe seen in the hemisphere that contained the lesion. This activation was considered normal in four patients. In two patients, the HRA was deformed. Functional MR imaging activation in the motor area was confirmed with Penfield stimulation in five patients. CONCLUSION: Functional MR imaging findings in the preoperative assessment of dysplastic lesions around the central sulcus are the same as for tumors.t-test maps are superior to difference maps in the treatment of motor functional MR imaging data.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/12/20 alle ore 01:47:24