Four-Dimensional Spectral-Spatial Fat Saturation Pulse Design at 3T

نویسندگان

  • Feng Zhao
  • Jeffrey A Fessler
  • Douglas C Noll
چکیده

Fig. 2: The map and the ratio images by different pulses (every third slice) in the phantom experiment. Oil is on top of water, and the map is in Hz. 2117 Four-Dimensional Spectral-Spatial Fat Saturation Pulse Design at 3T Feng Zhao, Jeffrey A Fessler, and Douglas C Noll Biomedical Engineering, The University of Michigan, Ann Arbor, MI, United States, EECS, The University of Michigan, Ann Arbor, MI, United States

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Four dimensional spectral-spatial fat saturation pulse design.

PURPOSE The conventional spectrally selective fat saturation pulse may perform poorly with inhomogeneous amplitude of static (polarizing) field (B0 ) and/or amplitude of (excitation) radiofrequency field (B1 ) fields. We propose a four dimensional spectral-spatial fat saturation pulse that is more robust to B0/B1 inhomogeneity and also shorter than the conventional fat saturation pulse. THEOR...

متن کامل

Fast 3D H Spectroscopic Imaging of the Human Brain at 3 Tesla using “spectroscopic Missing Pulse – SSFP” with 3D Spatial Selection

C. Schuster, W. Dreher, D. Leibfritz FB 2 (Chemistry), University of Bremen, Bremen, Germany, Center of Advanced Imaging (CAI), Bremen, Germany Introduction Over the past years several methods for fast 3D H MR spectroscopic imaging (MRSI) derived from corresponding fast MRI methods have been proposed to map the distribution of human brain metabolites. Besides echo planar MRSI and spiral MRSI [1...

متن کامل

Optimized Saturation Pulse Train for Human First-Pass Myocardial Perfusion Imaging at 7T

PURPOSE To investigate whether saturation using existing methods developed for 3T imaging is feasible for clinical perfusion imaging at 7T, and to propose a new design of saturation pulse train for first-pass myocardial perfusion imaging at 7T. METHODS The new design of saturation pulse train consists of four hyperbolic-secant (HS8) radiofrequency pulses, whose peak amplitudes are optimized f...

متن کامل

Robust Fat Suppression for High-resolution Diffusion-weighted Imaging

Introduction The diffusion-weighted imaging techniques can greatly benefit from an increase in image resolution as smaller voxels reductes the effects of partial volume with surrounding tissue. By scanning in the 3T environment a significant gain in SNR is achieved which facilitates the ability for higher resolution scans. In diffusion tensor imaging (DTI) it is important to acquire data with i...

متن کامل

Dixon Reconstruction

This approach is particularly important at lower field strengths, where it is the preferred method of lipid suppression. At 0.5T and below, chemically selective excitation or saturation is impractical since the small fat/water spectral shift would require a very long RF pulse. For example, the minimum time for a spectral-spatial pulse at 0.5T is about 24 ms. Inversion recovery methods become le...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2013