On the steady-state properties of actual flip angle imaging (AFI)

Magnetic Resonance in Medicine

Volumn 61, Issue 1, 2009, Pages 84-92

  Nehrke, Kay ^a  

^a PHILIPS RESEARCH LABORATORIES   (Germany)

Author keywords

B1 mapping; RF excitation; RF spoiling, configuration theory, diffusion

Indexed keywords

TISSUE;

B1 MAPPING; OFF-RESONANCE; OPERATING RANGES; RF EXCITATION; SPATIAL VARIATIONS; STEADY STATE PROPERTIES; STEADY STATE SIGNAL; TRANSVERSE MAGNETIZATION;

EXCITED STATES;

ACTUAL FLIP ANGLE IMAGING; ARTICLE; DIAGNOSTIC ACCURACY; DIAGNOSTIC IMAGING; DIFFUSION; HUMAN; IMAGE ANALYSIS; IN VIVO STUDY; NORMAL HUMAN; PARAMETER; PHANTOM; PULSE RATE; SENSITIVITY AND SPECIFICITY; SIMULATION; STEADY STATE;

EID: 60349112457     PISSN: 07403194     EISSN: 15222594     Source Type: Journal    
DOI: 10.1002/mrm.21592     Document Type: Article

References (23)

1. Dowell NG, Tofts PS. Fast, accurate, and precise mapping of the RF field in vivo using the 180 degrees signal null. Magn Reson Med 2007;58:622-630.
2. Katscher U, Bornert P, Leussler C, van den Brink JS. Transmit SENSE. Magn Reson Med 2003;49:144-150.
3. Zhu Y. Parallel excitation with an array of transmit coils. Magn Reson Med 2004;51:775-784.
4. Sotgiu A, Hyde JS. High-order coils as transmitters for NMR imaging. Magn Reson Med 1986;3:55-62.
5. Stollberger R, Wach P. Imaging of the active B1 field in vivo. Magn Reson Med 1996;35:246-251.
6. Sled JG, Pike GB. Correction for B1 and B0 variations in quantitative T2 measurements using MRI. Magn Reson Med 2000;43:589-593.
7. Fernandez-Seara MA, Song HK, Wehrli FW. Trabecular bone volume fraction mapping by low-resolution MRI. Magn Reson Med 2001;46:103-113.
8. Wang J, Qiu M, Constable RT. In vivo method for correcting transmit/receive nonuniformities with phased array coils. Magn Reson Med 2005;53:666-674.
9. Cunningham CH, Pauly JM, Nayak KS. Saturated double-angle method for rapid B1 mapping. Magn Reson Med 2006;55:1326-1333.
10. van der Meulen P, van Yperen GH. A novel method for rapid pulse angle optimisation. In: Proc 5th Annual Meeting SMRM; 1986: 1129.
11. Carlson JW, Kramer DM. Rapid radiofrequency calibration in MRI. Magn Reson Med 1990;15:438-445.
12. Akoka S, Franconi F, Seguin F, Le Pape A. Radiofrequency map of an NMR coil by imaging. Magn Reson Imaging 1993;11:437-441.
13. Jiru F, Klose U. Fast 3D radiofrequency field mapping using echoplanar imaging. Magn Reson Med 2006;56:1375-1379.
14. Yarnykh VL, Yuan C. Actual flip angle imaging in the pulsed steady state. In: Proc 12th Annual Meeting ISMRM, Kyoto, Japan; 2004 (Abstract 194).
15. Yarnykh VL. Actual flip angle imaging in the pulsed steady state: a method for rapid three-dimensional mapping of the transmitted radio-frequency field. Magn Reson Med 2007;57:192-200.
16. Treier R, Steingoetter A, Fried M, Schwizer W, Boesiger P. Optimized and combined T1 and B1 mapping technique for fast and accurate T1 quantification in contrast-enhanced abdominal MRI. Magn Reson Med 2007;57:568-576.
17. Woessner DE. Effects of diffusion in nuclear magnetic resonance spin-echo experiments. J Chem Phys 1961;34:2057-2061.
18. Hennig J. Echoes: how to generate, recognise, use or avoid them in MR imaging sequences. Concepts Magn Reson 1991;3:125-143.
19. Ganter C. Steady state of gradient echo sequences with radiofrequency phase cycling: analytical solution, contrast enhancement with partial spoiling. Magn Reson Med 2006;55:98-107.
20. Zur Y, Wood ML, Neuringer J. Spoiling of transverse magnetization in steady-state sequences. Magn Reson Med 1991;21:251-263.
21. Vlaardingerbroek MT, den Boer JA. Magnetic resonance imaging, 3rd ed. Berlin: Springer; 2002. p 423-467.
22. Ray KM, Wang H, Chu Y, Chen YF, Bert A, Hasso AN, Su MY. Mild cognitive impairment: apparent diffusion coefficient in regional gray matter and white matter structures. Radiology 2006;241:197-205.
23. Yamada I, Aung W, Himeno Y, Nakagawa T, Shibuya H. Diffusion coefficients in abdominal organs and hepatic lesions: evaluation with intravoxel incoherent motion echo-planar MR imaging. Radiology 1999;210:617-623.