MRI-relaxometry BMD-measurements using conventional phase symmetrized rapid increased flip spin echo (PRISE) and standard gradient echo (GE)

Morteza Bakhtiary,H. Ghanaati,A. Ghasemzadeh,N. Ryiahi-Alam,S. Sarkar,N. Shakery,Z. Hamidy-Abarghouie,M. A. Oghabian,B. Larijani

doi:10.1007/978-3-540-36841-0_339

MRI-relaxometry BMD-measurements using conventional phase symmetrized rapid increased flip spin echo (PRISE) and standard gradient echo (GE)

Morteza Bakhtiary, H. Ghanaati + Show 7 more

https://doi.org/10.1007/978-3-540-36841-0_339

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Publication Date: Jan 1, 2007

Affiliation: Tehran University of Medical Sciences, Imam Khomeini Hospital, Shariati Hospital

#Standard Gradient Echo #Trabecular Bone Separation + Show 8 more

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Abstract

The aim of this study was to use conventional MRI protocols for BMD measurements using MRI-Relaxometry. Cortical and trabecular bone separation cannot be performed in DXA, so the results might lead to erroneous interpretation of BMD values. One of the new special protocols is Gradient-Echo Sampling of Free-Induction-Decay and Echo (GESFIDE) used on General-Electric systems for deriving R2(=1/T2), R2*(=1/T2*) and R2′(=R2*−R2) in several applications. GESFIDE give 8–16 echoes (images) in single scan. It can be used only in system with high slew rate (22 mT/m.s or greater) due to several high slew rate gradients with high amplitudes in small periods.

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