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Titolo:
TRUE PROTON DENSITY AND T2-WEIGHTED TURBO SPIN-ECHO SEQUENCES FOR ROUTINE MRI OF THE BRAIN
Autore:
FELLNER F; SCHMITT R; TRENKLER J; FELLNER C; HELMBERGER T; OBLETTER N; BOHMJURKOVIC H;
Indirizzi:
KLINIKUM INGOLSTADT,DEPT RADIODIAGNOST,KRUMENAUERSTR 25 D-85049 INGOLSTADT GERMANY OBEROSTERREICH LANDESNERVEN KLIN,DEPT NEURORADIOL LINZ AUSTRIA DEPT MRI INGOLSTADT GERMANY UNIV REGENSBURG,DEPT RADIOL W-8400 REGENSBURG GERMANY
Titolo Testata:
Neuroradiology
fascicolo: 8, volume: 36, anno: 1994,
pagine: 591 - 597
SICI:
0028-3940(1994)36:8<591:TPDATT>2.0.ZU;2-B
Fonte:
ISI
Lingua:
ENG
Soggetto:
RARE;
Keywords:
MRI; BRAIN; TURBO SPIN-ECHO (TSE); FAST SPIN-ECHO (FSE); PROTON-DENSITY CONTRAST; RAPID IMAGING;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
11
Recensione:
Indirizzi per estratti:
Citazione:
F. Fellner et al., "TRUE PROTON DENSITY AND T2-WEIGHTED TURBO SPIN-ECHO SEQUENCES FOR ROUTINE MRI OF THE BRAIN", Neuroradiology, 36(8), 1994, pp. 591-597

Abstract

Our aim was to evaluate the diagnostic reliability of turbo spin-echo(TSE) sequences compared to a conventional dual-echo spin-echo (SE) sequence in routine brain MRI at 1.0 T. The following demands were madeon TSE sequences: acquisition time-reduction of at least 50% and trueproton density (PD) contrast (low-signal cerebrospinal fluid). A conventional spin-echo and two single-echo TSE sequences were used in 150 patients, a dual-echo TSE sequence in addition in 50 patients. Demonstration of most anatomical structures and disorders was equivalent withTSE and SE sequences. Advantages of TSE were reduced flow artefacts on T2-weighted images, better lesion contrast on PD-weighted TSE images(especially in the dual-echo sequence) and acquisition time reductionto about 5 min (single-echo TSE) and 3:35 min (dual-echo TSE). Disadvantages of TSE were: reduced contrast of iron-containing substances such as haemosiderin and of areas of calcification. By virtue of the shorter acquisition time and diagnostic reliability dual-echo TSE proved the best sequence. If it is used with only one acquisition - whereby image quality but not diagnostic reliability is slightly decreased - acquisition time can be further reduced to 1:48 min. Application of a susceptibility-sensitive gradient-echo sequence, such as FLASH, compensates for the disadvantages mentioned above.

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Documento generato il 02/12/20 alle ore 15:08:46