Rüdiger Stirnberg

Unprecedented In Vivo MRI Resolution of Basal Ganglia at 11.7 T

Béchir Jarraya, Rüdiger Stirnberg, Nicolas Boulant

This case report describes 11.7-T in vivo human brain magnetic resonance imaging (MRI) of the basal ganglia in 2 healthy volunteers.

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Device-specific spatio-temporal drifts in proton resonance frequency shift thermometry at 3 T

Johannes Lindemeyer, Stefanie Berger, Mona Ayary, Rüdiger Stirnberg et autres

Magnetic resonance imaging is the modality of choice for noninvasive temperature mapping to monitor and also to control hyperthermia. Temperature rise is observed through the proton resonance frequency shift (PRFS) reflecting in the phase of gradient echo acquisitions. Temporal and spatial magnetic …

Device-specific spatio-temporal drifts in proton resonance frequency shift thermometry at 3 T

Johannes Lindemeyer, Stefanie Berger, Mona Ayary, Rüdiger Stirnberg et autres

Magnetic resonance imaging is the modality of choice for noninvasive temperature mapping to monitor and also to control hyperthermia. Temperature rise is observed through the proton resonance frequency shift (PRFS) reflecting in the phase of gradient echo acquisitions. Temporal and spatial magnetic …

Elucidating directed neural dynamics of scene construction across memory and imagination

Christine Kindler, Jeffrey S. Taube, Pitshaporn Leelaarporn, Rüdiger Stirnberg et autres

Autobiographical memory (AM) and imagination both rely on the brain's ability to construct vivid, coherent mental representations of past or imagined experiences. A central cognitive process underlying these functions is scene construction-the mental generation of spatially organized, imagery-rich representations of environments. Using …

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Early life adversity shapes neural and behavioural responses to oxytocin during altruistic decision-making

Nina Marsh, Vanessa Jeske, Mari Babasiz, Angela Herscheid et autres

What makes some people willing to help strangers at a personal cost, while others are more hesitant or selective? Early life adversity - such as neglect or abuse - may shape how we respond to strangers in need later in life, yet …

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Peripheral Nerve Stimulation Optimized Pulses for EPI (POPE) allows high-resolution fMRI

Laurentius Renzo Huber, Dominik Rattenbacher, Bastien Guérin, Haotian Hong et autres

Purpose: Recent improvements in MRI gradient design and amplifiers, advanced MRI scanners are now routinely utilizing slew rates of several hundred T/m/s. However, full gradient performance cannot be exploited in high-resolution EPI due to peripheral nerve stimulation (PNS) limits. We aim to …

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Design of an 8‐Channel Transmit 32‐Channel Receive 11.7T Head Coil and Evaluation of SNR Gains

Son Chu, Jeslin Parackal Issac, Caroline Le Ster, Alexis Amadon et autres

ABSTRACT Purpose To design and develop an 8‐channel transmit 32‐channel receive 11.7T head coil for the strongest human MRI scanner to date, demonstrate safety, and evaluate signal‐to‐noise ratio (SNR) gains compared to 7T, the most used ultra‐high‐field (UHF) platform. Methods The transmit …

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Prospective Head Motion Correction in T1‐ and T2‐Weighted Long Echo Train Sequences Using Servo Navigation

Matthias Serger, Malte Riedel, Rüdiger Stirnberg, Thomas Ulrich et autres

PURPOSE: To integrate MR-based servo navigation in MPRAGE and 3D-TSE sequences and demonstrate its potential for prospective head motion correction in structural imaging. METHODS: Repeated modules of servo navigators were inserted before each preparation pulse of MPRAGE and 3D-TSE sequences (before-prep) for …

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First resting-state fMRI results at 11.7T

Joseph Obriot, Zaineb Amor, Matthias Serger, Rüdiger Stirnberg et autres

International audience

In-vivo mapping of whole-brain venous angioarchitecture and T2* at 350 microns with servo navigation and parallel transmission at 7 & 11.7 Tesla

Rüdiger Stirnberg, Matthias Serger, Philipp Ehses, Ömer Faruk Gülban et autres

International audience

Towards elucidating ripple artifacts encountered in accelerated 3D GRE acquisitions at UHF

Joseph Obriot, Franck Mauconduit, Vincent Gras, Chaithya Giliyar et autres

International audience

Prospective motion correction in structural imaging using servo navigation: pushing for high update rates and high resolution

Matthias Serger, Malte Riedel, Rüdiger Stirnberg, Nicolas Boulant et autres

International audience