Article 2 MR-guided focused ultrasound human 2 A-549 cell line 1 Clinical Rating Scale for Tremor 1 Drug Delivery Systems 1 Humans 1 Hyperthermia, Induced 1 Magnetic Fields 1 Magnetic nanoparticles 1 Magnetite Nanoparticles 1 Parkinson disease 1 Parkinson's disease (PD) 1 Polyethylene Glycols 1 adult 1 age 1 aged 1 ammonium derivative 1 balance impairment 1 bromide 1 cancer chemotherapy 1 cell viability 1 chemistry 1 controlled study 1 doxorubicin 1 drug cytotoxicity 1 drug delivery system 1 drug release 1 dysmetria 1 essential tremor 1