137 citations · 523 across the 6 of their papers we have counts for
5 papers · 1 filter
MP-PCA denoising of fMRI time-series data can lead to artificial activation "spreading"
Francisca F. Fernandes, Jonas L. Olesen, Sune N. Jespersen +1
MP-PCA denoising has become the method of choice for denoising in MRI since it provides an objective threshold to separate the desired signal from unwanted thermal noise components…
Tensor denoising of high-dimensional MRI data
Jonas L. Olesen, Andrada Ianus, Leif Østergaard +2
The signal to noise ratio (SNR) fundamentally limits the information accessible by magnetic resonance imaging (MRI). This limitation has been addressed by a host of denoising techn…
Diffusion time dependence, power-law scaling, and exchange in gray matter
Jonas L. Olesen, Leif Østergaard, Noam Shemesh +1
Diffusion MRI (dMRI) provides contrast that reflect diffusing spins' interactions with microstructural features of biological systems, but its specificity remains limited due to th…
Evaluation of principal component analysis image denoising on multi-exponential MRI relaxometry
Mark D. Does, Jonas Lynge Olesen, Kevin D. Harkins +4
PURPOSE: Multi-exponential relaxometry is a powerful tool for characterizing tissue, but generally requires high image signal-to-noise ratio (SNR). This work evaluates the use of p…
Diffusion time dependence of microstructural parameters in fixed spinal cord
Sune Nørhøj Jespersen, Jonas Lynge Olesen, Brian Hansen +1
Biophysical modelling of diffusion MRI is necessary to provide specific microstructural tissue properties. However, estimating model parameters from data with limited diffusion gra…