Anisotropic phantom to calibrate high-q diffusion MRI methods.

Novel anisotropic MRI diffusion phantom

Diffusion MRI (DMRI) comprises a growing list of methods, and with that the need for a reliable and robust MRI phantom with which one can calibrate and validate them. In this study we developed a novel anisotropic diffusion MRI phantom and demonstrated its applicability by producing fractional anisotropy (FA) maps derived from DTI and average pore diameter maps using double Pulsed Field Gradien...

P27 Calibrating d-PFG Filtered MRI Using a Novel Anisotropic Diffusion Phantom

Diffusion Phantom Michal Komlosh 1, Evren Ozarslan 1, Martin Lizak 1, Ferenc Horkay 1, Peter Basser 1 1 National Institute of Health Introduction: Diffusion MRI methods can provide valuable microstructural in­ formation about tissues and porous media within an imaging volume [1-3], how­ ever, calibrating them is problematic owing to the lack of suitable anisotropic diffusion MRI phantoms. Here ...

Microfluidic laminate-based phantom for diffusion tensor-magnetic resonance imaging (DT-MRI).

This paper reports fabrication of a magnetic resonance imaging (MRI) phantom created by stacking of multiple thin polydimethylsiloxane (PDMS) layers. PDMS is spin coated on SU-8 molds to obtain the desired layer thickness and imprints of the microchannel patterns that define the phantom geometry. This paper also identifies the unique challenges related to the fabrication and assembly of multipl...

ANISOTROPIC PHANTOM FOR DIFFUSION WEIGHTED MRI APPLICATIONS Instruction Manual

Joint Super-Resolution Using Only One Anisotropic Low-Resolution Image per q-Space Coordinate

Recently, super-resolution methods for diffusion MRI capable of retrieving high-resolution diffusion-weighted images were proposed, yielding a resolution beyond the scanner hardware limitations. These techniques rely on acquiring either one isotropic or several anisotropic low-resolution versions of each diffusionweighted image. In the present work, a variational formulation of joint superresol...