Enhanced identification of BOLD-like components with multi-echo simultaneous multi-slice (MESMS) fMRI and multi-echo ICA

نویسندگان
چکیده

برای دانلود باید عضویت طلایی داشته باشید

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

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Resting State ICA Enhanced with Multi-Echo fMRI

Introduction Independent Components Analysis (ICA) uses mutual information to reduce an fMRI dataset to a small group of source timecourses and corresponding localization maps. Resting state network (RSN) activity can then be distinguished from noise sources based on gray matter localization and temporal smoothness. In practice, components frequently have equivocal localization and mixed freque...

متن کامل

Improving diffusion MRI using simultaneous multi-slice echo planar imaging

In diffusion MRI, simultaneous multi-slice single-shot EPI acquisitions have the potential to increase the number of diffusion directions obtained per unit time, allowing more diffusion encoding in high angular resolution diffusion imaging (HARDI) acquisitions. Nonetheless, unaliasing simultaneously acquired, closely spaced slices with parallel imaging methods can be difficult, leading to high ...

متن کامل

A novel multi-echo fMRI weighting strategy using principal component analysis for BOLD contrast sensitivity enhancement

Introduction: In functional magnetic resonance imaging (fMRI), acquisition parameters must balance the tradeoffs between spatial coverage and resolution, temporal resolution, and signal contrast. Blood oxygenation level dependent (BOLD) fMRI studies commonly employ a 2D multi-slice T2*-weighted echo-planar imaging (EPI) acquisition to capture changes in T2* decay due to BOLD signal fluctuation,...

متن کامل

Multiband multi-echo simultaneous ASL/BOLD for task-induced functional MRI

Typical simultaneous blood oxygenation-level dependent (BOLD) and arterial spin labeling (ASL) sequences acquire two echoes, one perfusion-sensitive and one BOLD-sensitive. However, for ASL, spatial resolution and brain coverage are limited due to the T1 decay of the labeled blood. This study applies a sequence combining a multiband acquisition with four echoes for simultaneous BOLD and pseudo-...

متن کامل

Multi-echo, multi-slice, cardiovascular T2* spiral imaging in a single breath-hold

Background Elevated levels of iron in the body can be detected in various organs including the heart. If not treated, high iron levels can lead to serious health conditions including heart failure and cirrhosis. Cardiovascular MR provides a non-invasive and repeatable alternative method to endomyocardial biopsy for monitoring iron levels within the myocardium. Multi-echo, single slice, Cartesia...

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

ژورنال

عنوان ژورنال: NeuroImage

سال: 2015

ISSN: 1053-8119

DOI: 10.1016/j.neuroimage.2015.02.052