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Titolo:
BOLD contrast on a 3 T magnet: Detectability of the motor areas
Autore:
Nakai, T; Matsuo, K; Kato, C; Okada, T; Moriya, T; Isoda, H; Takehara, Y; Sakahara, H;
Indirizzi:
MITI, Electrotec Labs, MRSL, Ikeda, Osaka 5638577, Japan MITI Ikeda OsakaJapan 5638577 ec Labs, MRSL, Ikeda, Osaka 5638577, Japan Toyohashi Sozo Coll, Dept Management Informat, Toyohashi, Aichi, Japan Toyohashi Sozo Coll Toyohashi Aichi Japan ormat, Toyohashi, Aichi, Japan Kyoto Univ, Dept Nucl Med & Diagnost Radiol, Kyoto, Japan Kyoto Univ Kyoto Japan v, Dept Nucl Med & Diagnost Radiol, Kyoto, Japan Hamamatsu Univ, Sch Med, Dept Radiol, Hamamatsu, Shizuoka 43131, Japan Hamamatsu Univ Hamamatsu Shizuoka Japan 43131 atsu, Shizuoka 43131, Japan
Titolo Testata:
JOURNAL OF COMPUTER ASSISTED TOMOGRAPHY
fascicolo: 3, volume: 25, anno: 2001,
pagine: 436 - 445
SICI:
0363-8715(200105/06)25:3<436:BCOA3T>2.0.ZU;2-4
Fonte:
ISI
Lingua:
ENG
Soggetto:
CEREBRAL BLOOD-FLOW; CORTICAL AREAS; VOLUNTARY MOVEMENTS; FUNCTIONAL MRI; OXYGENATION CHANGES; PREMOTOR CORTEX; FINGER MOVEMENT; SIGNAL CHANGE; BRAIN; SUPPLEMENTARY;
Keywords:
functional magnetic resonance imaging (MRI); blood oxygen level dependency (BOLD);
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Life Sciences
Citazioni:
42
Recensione:
Indirizzi per estratti:
Indirizzo: Nakai, T MITI, Electrotec Labs, MRSL, 1-8-31 Midorigaoka, Ikeda, Osaka 5638577, Japan MITI 1-8-31 Midorigaoka Ikeda Osaka Japan 5638577 5638577, Japan
Citazione:
T. Nakai et al., "BOLD contrast on a 3 T magnet: Detectability of the motor areas", J COMPUT AS, 25(3), 2001, pp. 436-445

Abstract

To predict the potential and the limitations of functional MRI (fMRI) witha very high field magnet, the detectability and reproducibility of activation were evaluated by comparing the activation induced by a sequential finger movement task at 1.5 T with that at 3 T. The detectability of the prc mc,tor area, supplementary motor area (SMA), and ipsilateral sensorimotor area (SM1) showed significant improvement at 3 T. On the other hand, the detectability of contralateral SMI was not significantly different between 1.5 and 3 T. The degree of activation was proportional to task demand in the ipsilateral SM1 and SMA, whereas that in the contralateral SMI and SMA was not. FMRI with a 3 T magnet has greater potential for detection of neuronal activation as a functional network. These observations indicated that task demand and static magnetic field strength should be considered in interpretation of fMRI data for clinical usage.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 25/11/20 alle ore 18:40:11