Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
OPTIMIZING 3-DIMENSIONAL TIME-OF-FLIGHT MR-ANGIOGRAPHY WITH VARIABLE REPETITION TIME
Autore:
TKACH JA; LIN WL; DUDA JJ; HAACKE EM; MASARYK TJ;
Indirizzi:
CLEVELAND CLIN FDN,DEPT RADIOL,DESK L-10,9500 EUCLID AVE CLEVELAND OH44106 WASHINGTON UNIV,MED CTR,MALLINCKRODT INST RADIOL,DEPT RADIOL ST LOUISMO 63110
Titolo Testata:
Radiology
fascicolo: 3, volume: 191, anno: 1994,
pagine: 805 - 811
SICI:
0033-8419(1994)191:3<805:O3TMWV>2.0.ZU;2-#
Fonte:
ISI
Lingua:
ENG
Soggetto:
MAGNETIZATION TRANSFER CONTRAST; THIN SLAB ACQUISITION; ECHO TIMES;
Keywords:
CEREBRAL BLOOD VESSELS, FLOW DYNAMICS; MAGNETIC RESONANCE (MR), K-SPACE; MAGNETIC RESONANCE (MR), PULSE SEQUENCES; MAGNETIC RESONANCE (MR), VASCULAR STUDIES;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
18
Recensione:
Indirizzi per estratti:
Citazione:
J.A. Tkach et al., "OPTIMIZING 3-DIMENSIONAL TIME-OF-FLIGHT MR-ANGIOGRAPHY WITH VARIABLE REPETITION TIME", Radiology, 191(3), 1994, pp. 805-811

Abstract

PURPOSE: To implement and evaluate a variable repetition time (TR) modification of three-dimensional (3D) time-of-flight (TOF) magnetic resonance (MR) angiography. MATERIALS AND METHODS: Variable- and constant-TR 3D TOF MR angiography of the intracranial vasculature was performed in 20 healthy volunteers and 10 patients with known or suspected cerebrovascular disease. Total acquisition time was short and held constant for all studies. Frequency-selective fat saturation (FS) and magnetization transfer saturation (MTS) pulses were applied. The associated maximum-intensity projection (MIP) images were evaluated quantitatively for contrast-to-noise (C/N) and qualitatively for depiction of vessels that exhibit slow flow. RESULTS: Variable-TR MIP images exhibited improved C/N and depiction of small peripheral vessels and venous structures when compared with constant-TR MIP images. These observations were consistent for all studies. CONCLUSIONS: The variable-TR modification improved the depiction of intracranial vessels that exhibit slow now.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 06/04/20 alle ore 21:42:41