User profiles for Alexander Loktyushin

Alexander Loktyushin

Digital Therapeutics, Champalimaud Center for the Unknown
Verified email at research.fchampalimaud.org
Cited by 471

Blind retrospective motion correction of MR images

A Loktyushin, H Nickisch, R Pohmann… - Magnetic resonance …, 2013 - Wiley Online Library
Purpose Subject motion can severely degrade MR images. A retrospective motion correction
algorithm, Gradient‐based motion correction, which significantly reduces ghosting and …

Existential neuroscience: a functional magnetic resonance imaging investigation of neural responses to reminders of one's mortality

M Quirin, A Loktyushin, J Arndt… - Social Cognitive and …, 2012 - academic.oup.com
A considerable body of evidence derived from terror management theory indicates that the
awareness of mortality represents a potent psychological threat engendering various forms of …

MRzero‐Automated discovery of MRI sequences using supervised learning

A Loktyushin, K Herz, N Dang, F Glang… - Magnetic …, 2021 - Wiley Online Library
Purpose A supervised learning framework is proposed to automatically generate MR
sequences and corresponding reconstruction based on the target contrast of interest. Combined …

Blind multirigid retrospective motion correction of MR images

A Loktyushin, H Nickisch, R Pohmann… - Magnetic resonance …, 2015 - Wiley Online Library
Purpose Physiological nonrigid motion is inevitable when imaging, eg, abdominal viscera,
and can lead to serious deterioration of the image quality. Prospective techniques for motion …

Automatic detection of motion artifacts in MR images using CNNS

K Meding, A Loktyushin, M Hirsch - 2017 IEEE International …, 2017 - ieeexplore.ieee.org
Considerable practical interest exists in being able to automatically determine whether a
recorded magnetic resonance image is affected by motion artifacts caused by patient …

Spread‐spectrum magnetic resonance imaging

K Scheffler, A Loktyushin, J Bause… - Magnetic resonance …, 2019 - Wiley Online Library
Purpose A novel method for the acceleration of MRI acquisition is proposed that relies on
the local modulation of magnetic fields. These local modulations provide additional spatial …

[HTML][HTML] MR-double-zero–proof-of-concept for a framework to autonomously discover MRI contrasts

F Glang, S Mueller, K Herz, A Loktyushin… - Journal of Magnetic …, 2022 - Elsevier
Purpose A framework for supervised design of MR sequences for any given target contrast is
proposed, based on fully automatic acquisition and reconstruction of MR data on a real MR …

[HTML][HTML] The achievement motive in the brain: BOLD responses to pictures of challenging activities predicted by implicit versus explicit achievement motives

M Quirin, A Loktyushin, E Küstermann… - Frontiers in Psychology, 2022 - frontiersin.org
The achievement motive refers to a preference for mastering challenges and competing with
some standard of excellence. Along with affiliation and power motives, the achievement …

MR‐zero meets RARE MRI: Joint optimization of refocusing flip angles and neural networks to minimize T2‐induced blurring in spin echo sequences

…, S Weinmüller, F Glang, A Loktyushin… - Magnetic …, 2023 - Wiley Online Library
Purpose An end‐to‐end differentiable 2D Bloch simulation is used to reduce T 2 induced
blurring in single‐shot turbo spin echo sequences, also called rapid imaging with refocused …

Retrospective motion correction of magnitude-input MR images

A Loktyushin, C Schuler, K Scheffler… - Machine Learning Meets …, 2015 - Springer
There has been a considerable progress recently in understanding and developing solutions
to the problem of image quality deterioration due to patients’ motion in MR scanners. …