M-SPION	Multimodal superparamagnetic iron oxide nanoparticle
MRI	Magnetic resonance imaging
NIRF	Near-infrared fluorescence
ICP-MS	Inductively coupled plasma mass spectrometry
CT	Computer tomography
pg	Picogram
mL	Milliliter
PET	Positron emission tomography
SPECT	Single-photon emission tomography
SPION	Superparamagnetic iron oxide nanoparticle
USPIO	Ultrasmall superparamagnetic iron oxides
MPIO	Microparticle iron oxide
PBS	Phosphate buffer solution
HBSS	Hank’s balanced salts solution
SD	Standard deviation
SE	Standard error
FITC	Fluorescein isothiocyanate
PI-PE	Propidium iodine – phycoerythrin
DAPI	4′,6-Diamidine-2′-phenylindole dihydrochloride
FSC	Forward scatter
SSC	Side scatter
r2	Transverse relaxivity
T2	Transversal relaxation time
TE	Echo time
ms	Millisecond
µg	Microgram
Fe	Iron
ppb	Part per billion
cps	Counts per second
HD	Hydrodynamic diameter
mV	Millivolts
FBS	Fetal bovine serum
IR-750	Infrared-absorption in 750
TR	Repetition time
r1	Longitudinal relaxivity
g	Gravitational force
I.U.	International unit
NaCl	Sodium chloride
DMEM	Dulbecco′s modified Eagle medium
RPM	Rotation per minute
cm	Centimeter
SE_MS	Spin echo multi slice
mm	Millimeter
FOV	Field of view
ROI	Region of interest
${\mathbf{\varnothing }}_{\mathit{M}\mathit{-}\mathit{S}\mathit{P}\mathit{I}\mathit{O}\mathit{N}}$	Diameter of multimodal superparamagnetic iron oxide nanoparticle
${\mathit{\rho }}_{\mathit{M}\mathit{-}\mathit{S}\mathit{P}\mathit{I}\mathit{O}\mathit{N}}$	Density of multimodal superparamagnetic iron oxide nanoparticle