Hepatic fat fraction and visceral adipose tissue fatty acid composition in mice: Quantification with 7.0T MRI.

Purpose: To develop an MRI method for quantifying hepatic fat content and visceral adipose tissue fatty acid composition in mice on a 7.0T preclinical system.

Methods: MR acquisitions were performed with a multiple echo spoiled gradient echo with bipolar readout gradients.

Structure and thermorheology of concentrated pluronic copolymer micelles in the presence of laponite particles.

Small-angle neutron scattering and thermorheology techniques are used to investigate in detail the effect of laponite particles in aqueous solutions of poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide), PEO-PPO-PEO, block copolymers in the concentrated regime. At high polymer concentration or temperature, the micellar solutions exhibit a phase transition from fluid to crystal due to crowding of the micelles. The addition of laponite is found to disturb this phase transition.