LEO	Low Earth Orbit
NASA	National Aeronautics and Space Administration
VO2max	Maximal oxygen consumption
AI	Artificial intelligence
ISS	International Space Station
AF	Atrial fibrillation
LET	linear energy transfer
MRI	Magnetic resonance imaging
Gy	Gray (unit)
BMI	Body mass index
NAFLD	Non-alcoholic fatty liver disease
EBV	Epstein-Bar Virus
VZV	Varicella-Zoster Virus
CMV	Cytomegalovirus
NCRP	National Council on Radiation Protection and Measurements
SMS	Space motion sickness
ICP	Intracranial pressure
PFMS	Post-flight motion sickness
CNS	Central nervous system
SANS	Spaceflight Associated Neuro-Ocular Syndrome
IOP	Intraocular pressure
FRC	Functional residual capacity
VC	Vital capacity
ERV	Expiratory reserve volume
RV	Residual volume
V/Q	Ventilation/perfusion
NEEMO	NASA Extreme Environment Missions Operations
FAST	Focused Assessment with Sonography for Trauma
PET	Positron emission tomography
CPR	Cardiopulmonary Resuscitation
CR	Caloric restriction
TPU	Tensor Processing Unit
PHQ-9	Patient Health Questionnaire-9
GAD-7	General Anxiety Disorder-7
GCR	Galactic Cosmic Ray
DVT	Deep vein thrombosis
ASIC	Application-specific integrated circuit
TB	Tuberculosis
PSA	Prostate-specific antigen
DXA	Dual-energy X-ray absorptiometry
T4	Levothyroxine
TSH	Thyroid-stimulating hormone
GDR	Galactic cosmic radiation