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Titolo:
MR-IMAGING OF THE LIVER - COMPARISON BETWEEN SINGLE-SHOT ECHO-PLANAR AND HALF-FOURIER RAPID ACQUISITION WITH RELAXATION ENHANCEMENT SEQUENCES
Autore:
YAMASHITA Y; TANG Y; NAMIMOTO T; MITSUZAKI K; TAKAHASHI M;
Indirizzi:
KUMAMOTO UNIV,SCH MED,DEPT RADIOL,1-1-1 HONJO KUMAMOTO 860 JAPAN
Titolo Testata:
Radiology
fascicolo: 2, volume: 207, anno: 1998,
pagine: 331 - 337
SICI:
0033-8419(1998)207:2<331:MOTL-C>2.0.ZU;2-B
Fonte:
ISI
Lingua:
ENG
Soggetto:
FOCAL HEPATIC-LESIONS; FAST SPIN-ECHO; PULSE SEQUENCES; DIFFUSION; PERFUSION; IMAGES; RARE;
Keywords:
LIVER NEOPLASMS, MR; MAGNETIC RESONANCE (MR), ECHO PLANAR; MAGNETIC RESONANCE (MR), PULSE SEQUENCES; MAGNETIC RESONANCE (MR), RAPID IMAGING;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
19
Recensione:
Indirizzi per estratti:
Citazione:
Y. Yamashita et al., "MR-IMAGING OF THE LIVER - COMPARISON BETWEEN SINGLE-SHOT ECHO-PLANAR AND HALF-FOURIER RAPID ACQUISITION WITH RELAXATION ENHANCEMENT SEQUENCES", Radiology, 207(2), 1998, pp. 331-337

Abstract

PURPOSE: To evaluate single-shot T2-weighted magnetic resonance sequences and their role in clinical practice in patients with hepatic lesions. MATERIALS AND METHODS: Prospective comparison of echo-planar and half-Fourier rapid acquisition with relaxation enhancement (RARE) imaging was performed in 80 patients with focal hepatic lesions. Spin-echo(SE) single-shot echo-planar (echo times, 47 and 80 msec) and half-Fourier RARE (echo time, 59 msec) images were compared with turbo SE (repetition time msec/echo time msec = 3,200-7,600/90) images. Quantitative, qualitative, and receiver operating characteristic (ROC) analyses were performed. RESULTS: For liver, signal-to-noise ratios on half-Fourier RARE images were significantly higher than those on echo-planar images (P < .01). For cystic lesions, contrast on half-Fourier RARE andecho-planar images was slightly higher tan that on turbo SE images. For solid lesions, contrast on echo-planar images was better than that on half-Fourier RARE or turbo SE images. Artifacts including ghosting,bowel motion, susceptibility difference, and chemical shift were negligible on half-Fourier RARE images in all patients, whereas susceptibility difference and chemical shift of various degrees were seen on allecho-planar images. On the basis of ROC analyses, tumor detection rates were significantly higher with half-Fourier RARE and turbo SE images than with echo-planar images (P < .01). CONCLUSION: Echo-planar images provide sufficient contrast to allow detection of both solid and cystic masses, but severe artifacts preclude routine use. Half-Fourier RARE images are free from artifacts (chemical shift and susceptibility)and diagnostic performance with them is similar to that with turbo SEimages.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 12/07/20 alle ore 06:05:44