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Titolo:
MR ANATOMY AND SMALL LESIONS OF THE EYE - IMPROVED DELINEATION WITH ASPECIAL SURFACE COIL
Autore:
HOSTEN N; LEMKE AJ; SANDER B; WASSMUTH R; TERSTEGGE K; BORNFELD N; FELIX R;
Indirizzi:
HUMBOLDT UNIV BERLIN,KLINIKUM RUDOLF VIRCHOW,STRAHLENKLIN & POLIKLIN,AUGUSTENBURGER PL 1 D-13353 BERLIN GERMANY FREE UNIV BERLIN,KLINIKUM BENJAMIN FRANKLIN,AUGENKLIN & POLIKLIN D-12200 BERLIN GERMANY UNIV SAARLAND,FAK MED,INST NEURORADIOL D-66424 HOMBURG GERMANY
Titolo Testata:
European radiology
fascicolo: 4, volume: 7, anno: 1997,
pagine: 459 - 463
SICI:
0938-7994(1997)7:4<459:MAASLO>2.0.ZU;2-W
Fonte:
ISI
Lingua:
ENG
Keywords:
MR; SURFACE COILS; PULSE SEQUENCES; EYE; NEOPLASMS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
9
Recensione:
Indirizzi per estratti:
Citazione:
N. Hosten et al., "MR ANATOMY AND SMALL LESIONS OF THE EYE - IMPROVED DELINEATION WITH ASPECIAL SURFACE COIL", European radiology, 7(4), 1997, pp. 459-463

Abstract

To develop an improved investigation protocol for MRI studies of intraocular lesions, imaging with a small surface coil (diameter 6 cm) wascompared with a standard surface coil (diameter 11 cm). Both coils were assessed initially on an eye phantom and then by studying 22 patients with uveal melanoma and similar lesions of the eye. The influence of bandwidth and field or view (FOV) were systematically studied and evaluated quantitatively. A smaller bandwidth improved image quality independent of surface coil size. The subsequent secondary increase in chemical shift artefact was acceptable. Smaller FOVs (60-80 mm) necessitated the use of a smaller surface coil. A smaller bandwidth also proved to be advantageous with the use of the smaller surface coil. In conclusion, a smaller-diameter surface coil improves MR imaging of ocular lesions. Pulse sequences with a small bandwidth maintain an acceptablesignal-to-noise ratio when the FOV is reduced.

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Documento generato il 02/04/20 alle ore 19:02:46