Jan 1, 2018 · This shows the feasibility of diffuse motor-network imaging at high spatial and temporal resolution with robust BOLD sensitivity with 7T-fMRI. Importantly, we show that this sensitivity improvement could be extended to an fMRI application such as BCIs.

Jan 1, 2018 · At large, we aim to use high resolution 7T-fMRI to determine and improve the suitability of invasive motor-restorative BCI treatments at the individual level. Considering this goal, it would be ideal to understand the spatiotemporal dynamics of BOLD activity underlying complex cognitions at the highest possible resolution.

Jan 10, 2023 · Here, we present our implementation of SELINE for BOLD fMRI in humans at 7T. We compared the performance of SELINE with a GELINE acquisition in terms of temporal signal-to-noise ratio (tSNR), line specificity and BOLD sensitivity. We also guide the reader through specific technical issues we ran into during the implementation of the sequence.

Mar 31, 2024 · 7T 成像的一个公认的优点是 BOLD 信号和 信噪比 (SNR) 随之增加。 改进的信噪比转化为更好的 空间分辨率 ，允许在合理的成像时间内获得≤ 1 mm3 的 体素 。 使用视觉激活范例，在 7T 下实现高分辨率单次自旋回波 fMRI，面内分辨率为 0.5 mm。 （From …

Oct 15, 2024 · Here, we present an innovative multi-contrast laminar fMRI technique at 7T, which enables simultaneous measurement of CBF, CBV, T2-weighted BOLD, and CMRO 2. The key innovation of the proposed method lies in the use of pseudo-continuous ASL (pCASL) with intracranial labeling and a zoomed 3D gradient-and-spin echo (GRASE) readout, coupled with …

Jul 15, 2019 · Calibration-free pTX was successfully implemented in the entire HCP RS-fMRI protocol at 7T, including anatomical scans, by means of slice-specific bipolar two-spoke SMS-UPs (MB = 5) and non-selective k T point UPs. The flip angle homogeneity reported in this study with universal slice-specific two-spoke MB-EPI pulses (9–11% across 5 subjects ...

Jan 15, 2023 · Line-scanning is a powerful fMRI technique to detect BOLD responses at ultra-high spatial and temporal resolutions. Here, we added multi-echo readouts, NORDIC denoising, and real-time motion correction. We suggest a 5-echo multi-echo acquisition with NORDIC-denoising for line-scanning fMRI in the visual cortex.

Apr 2, 2024 · Laminar multi-contrast fMRI at 7T allows differentiation of neuronal excitation and inhibition underlying positive and negative BOLD responses

This approach, termed “3D T2prep-GRE”, was implemented at 7T with a typical spatial (2.5×2.5×2.5mm 3) and temporal (TR=2.3s) resolution for fMRI and whole-brain coverage (55 slices), and compared with the widely used 2D spin-echo EPI sequence.

Jul 4, 2022 · In this paper, we demonstrate the application of the TURBINE acquisition scheme for ultrahigh-resolution fMRI at 7T. We show distortion-free 0.67 mm isotropic slab acquisitions centered on primary visual and motor cortex areas, enabling layer-specific investigation of cortical activation, as well as a proof-of-principle anisotropic whole-brain ...