Ultrafast bold fMRI using single-shot spin-echo echo planar imaging
نویسندگان
چکیده
منابع مشابه
Single-shot, turbo spin-echo, diffusion-weighted imaging versus spin-echo-planar, diffusion-weighted imaging in the detection of acquired middle ear cholesteatoma.
Diagnosis of acquired middle ear cholesteatoma on MR imaging is mostly done on late postgadolinium T1-weighted MR images and/or echo-planar (EPI) diffusion-weighted (DWI) MR images. We describe the appearance of a case of a complicated attical middle ear cholesteatoma on single-shot (SS) turbo spin-echo (TSE) DWI compared with EPI-DWI. This case suggests a higher reliability of SS TSE-DWI in th...
متن کاملGhost-Free Spin-Echo Echo Planar Imaging Method for Diffusion Weighted Images using Adaptive RF Pulses
Y. Han, J. Hwang, J-Y. Chung, H. Park Department of Electrical Engineering, Korea Advanced Institute of Science and Technology, Daejeon, Korea, Republic of Introduction Diffusion tensor imaging (DTI) can provide valuable information regarding brain connectivity and neurological diseases. However, acquiring DTI is not an easy process because it has to be acquired in a short period of time with h...
متن کاملBoosting BOLD fMRI by K-Space Density Weighted Echo Planar Imaging
Functional magnetic resonance imaging (fMRI) has become a powerful and influential method to non-invasively study neuronal brain activity. For this purpose, the blood oxygenation level-dependent (BOLD) effect is most widely used. T2* weighted echo planar imaging (EPI) is BOLD sensitive and the prevailing fMRI acquisition technique. Here, we present an alternative to its standard Cartesian recor...
متن کاملCompensation of susceptibility-induced BOLD sensitivity losses in echo-planar fMRI imaging.
Gradient-echo echo-planar imaging is a standard technique in functional magnetic resonance imaging (fMRI) experiments based on the blood oxygenation level-dependent (BOLD) effect. A major problem is the occurrence of susceptibility gradients near air/tissue interfaces. As a consequence, the detection of neuronal activation may be greatly compromised in certain brain areas, especially in the tem...
متن کاملEffect of contrast media on single-shot echo planar imaging: implications for abdominal diffusion imaging.
PURPOSE The goal of this study was to determine the effect of contrast media on the signal behavior of single-shot echo planar imaging (ssEPI) used for abdominal diffusion imaging. MATERIALS AND METHODS The signal of an ssEPI spin echo sequence in a water phantom with varying concentrations of gadolinium was modeled with Bloch equations and the predicted behavior validated on a phantom at 1.5...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Medical Physics
سال: 2009
ISSN: 0971-6203
DOI: 10.4103/0971-6203.48719