ACS	American Cancer Society
CCC	Concordance Correlation Coefficient
COV	Coefficient of Variation
CT	Computed Tomography
CXRs	Chest radiographies
GLCM	Grey-level Co-occurrence Matrix
GLDM	Grey-level Difference Matrix
GLRLM	Grey-level Run Length Matrix
GLSZM	Grey-level Size-zone Matrix
ICC	Intra-class Correlation Coefficient
HU	Hounsfield Units
MRI	Magnetic Resonance Imaging
NGTDM	Neighbouring Grey-tone Difference Matrix
ROI	Region of Interest
sMAPE	Symmetric Mean Absolute Percentage Error
PET	Positron Emission Tomography