Assessment of differential magnetic susceptibility in nanoparticles: Effects of changes in viscosity and immobilisation

Optomagnetic nanofluids for controlled brain hyperthermia: a critical study

“…Indeed, additional immobilization of the NFs on the agar-based phantom (or to the tissues when injected in real biological tissues) in the form of clusters can take place, which can favor detrimental magnetic dipolar interactions and completely frustrate the Brownian relaxation. 49,54,55 A slightly higher SAR reduction was detected when NFs were dispersed in blood plasma (Fig. 3D-iii), due to their partial agglomeration caused by plasma protein adsorption onto the NF surface, further confirming the impact of this effect on SAR values (see Fig.…”

“…3-iv). 48,54 The increase in viscosity caused by glycerol resulted in a negligible effect on the NF SAR value. This indicates that the Néel process prevails in the studied NFs.…”

Magnetic particle imaging: tracer development and the biomedical applications of a radiation-free, sensitive, and quantitative imaging modality

“…60 Any alteration in these parameters will lead to considerable changes in the packing arrangements, and this can significantly affect the dipole-dipole or exchange-interactions between the tightly associated cores, which strongly influence the magnetic behaviour of the SPIONs. [165][166][167] Because of this, in general, multicore SPIONs have less uniform magnetic properties than standard single-core formulations, and produce poorer signals in MPI. Despite this, the presence of multiple cores can also be advantageous, if there is proper control of the structure during the synthesis.…”

Laparoscopic Probe for Sentinel Lymph Node Harvesting Using Magnetic Nanoparticles

“…When injected, the tracer spreads from the injection spot through the lymphatic system. Depending on halftime and coating, a tracer will be excreted by the kidneys, phagocytosed by macrophages, or encapsulated by a deposition of plasma proteins [7]. Subsequently, intraoperative harvesting of LNs is facilitated by LN identification using a tracer-specific detector.…”

“…Provided with a relatively long half time of the magnetic tracers [16], they are phagocytosed by macrophages and encapsulated by a deposition of plasma. These effects contribute to the trapping of the injected tracer inside the LN [7]. The main advantages of magnetic tracers are the absence of radiation exposure, the lack of regulatory requirements related to radioactivity, and the longer shelf-life compared to a radioactive tracer.…”