This database contains imaging and calibration data for phantoms contained in the NIST/NIBIB Phantom Lending Library (PLL). Description and access to the PLL can be found at https://www.nist.gov/programs-projects/nistnibib-medical-imaging-phantom-lending-library . Public analysis software written in Python can be found at https://github.com/MRIStandards/PhantomViewer . This database contains image sets from different scanners and different sites to be used for comparison and reference purposes. It is not meant to endorse any specific scanner or scan protocol.