Multiecho sequences with variable refocusing flip angles: Optimization of signal behavior using smooth transitions between pseudo steady states (TRAPS)

Magnetic Resonance in Medicine

Volumn 49, Issue 3, 2003, Pages 527-535

  Hennig, Juergen ^a,b   Weigel, Matthias ^a   Scheffler, Klaus ^a  

^a UNIVERSITY OF FREIBURG   (Germany)

^b Section of Medical Physics   (Germany)

Author keywords

Hyperecho; RARE; Spin echo; TRAPS; Variable flip angles

Indexed keywords

MAGNETIZATION; SPIN POLARIZATION;

FLIP ANGLE; HYPERECHO; RARE; SPIN ECHO; TRAPS;

DRUG PRODUCTS;

ARTICLE; CEREBELLUM; CONTRAST; GRAY MATTER; HUMAN; HUMAN EXPERIMENT; IMAGE QUALITY; MAGNETIC RESONANCE CHOLANGIOPANCREATOGRAPHY; MATHEMATICAL MODEL; MYELOGRAPHY; NORMAL HUMAN; NUCLEAR MAGNETIC RESONANCE IMAGING; ORBIT; PHANTOM; SIGNAL NOISE RATIO; STEADY STATE; SUBCUTANEOUS FAT; UROGRAPHY; VOLUNTEER; WHITE MATTER;

EID: 0037373303     PISSN: 07403194     EISSN: None     Source Type: Journal    
DOI: 10.1002/mrm.10391     Document Type: Article

References (15)

1. Hahn EL. Spin echoes. Phys Rev 1950;80:580-594.
2. Hennig J, Nauerth A, Friedburg H. RARE imaging: a fast imaging method for clinical MR. Magn Reson Med 1986;3:823-833.
3. Meiboom S, Gill D. Modified spin-echo method for measuring nuclear relaxation times. Rev Sci Instrum 1958;29:688-691.
4. Kangarlu A, Abduljalil AM, Schwarzbauer C, Norris DG, Robitaille PM. Human rapid acquisition with relaxation enhancement imaging at 8 T without specific absorption rate violation. MAGMA 1999;9:81-84.
5. Hennig J. Multiecho imaging sequences with low refocusing flip angles. J Magn Reson 1988;78:397-407.
6. Le Roux P, Hinks RS. Stabilization of echo amplitudes in FSE sequences. Magn Reson Med 1993;30:183-190.
7. Alsop DC. The sensitivity of low flip angle RARE imaging. Magn Reson Med 1997;37:176-184.
8. Hennig J, Scheffler K. Easy improvement of signal-to-noise in RARE sequences with low refocusing flip angles. Magn Reson Med 2000;44:983-985.
9. Hennig J. Echoes - how to generate, recognize, use or avoid them in MR imaging sequences. Concepts Magn Reson 1991;3:125-143.
10. Hennig J, Scheffler K. Hyperechoes. Magn Reson Med 2001;46:6-12.
11. Busse RF, Riederer SJ. Reducing SAR in real-time SSFSE imaging with variable-flip hard refocusing RF pulses. In: Proceedings of the 9th Annual Meeting of ISMRM, Glasgow, Scotland, 2001. p 1790.
12. 2-weighted 3D spin-echo train imaging of the brain at 3 Tesla: reduced power deposition using low flip-angle refocusing RF pulses. In: Proceedings of the 9th Annual Meeting of ISMRM, Glasgow, Scotland, 2001. p 438.
13. Hennig J, Friedburg H, Strobel B. Rapid nontomographic approach to MR myelography without contrast agents. J Comput Assist Tomogr 1986;10:375-378.
14. Sigmund G, Stoever B, Zimmerhackl LB, Frankenschmidt A, Nitzsche E, Leititis JU, Struwe FE, Hennig J. RARE-MR urography in the diagnosis of upper urinary tract abnormalities in children. Pediatr Radiol 1991;21:416-420.
15. Laubenberger J, Buchert M, Schneider B, Blum U, Hennig J, Langer M. Breath-hold projection magnetic resonance-cholangio-pancreaticography (MRCP): a new method for the examination of the bile and pancreatic ducts. Magn Reson Med 1995;33:18-23.