CaliberMRI – Model 137 hybrid phantom for MRI
The CaliberMRI Mini Hybrid Phantom is the CaliberMRI Model 137 for quality-control support and technical characterization in quantitative MRI, combining relaxometry, diffusion and geometric references in a compact phantom.
Typical use
Suitable for MRI, research and QA/QC teams that need a physical reference for tracking T1, T2 and ADC measurements, checking geometry and resolution, and supporting technical protocol stability across MRI systems.
Key points
- The official page presents the product as a Mini Hybrid Phantom with reference features for geometric and tissue characterization in MRI scans.
- The public spec sheet identifies the product as Model 137 Mini Hybrid Phantom.
- The public spec sheet states development in collaboration with NIST, ISMRM and RSNA/QIBA.
- Built with a 170 mm diameter spherical shell.
- CaliberMRI highlights support for low-field through high-field scanners.
- Includes 14 T2-mimic spheres with NIST-traceable MnCl2 solutions, with nominal values from about 5 ms to 550 ms.
- Includes 14 T1-mimic spheres with NIST-traceable NiCl2 solutions, with nominal values from about 20 ms to 1900 ms.
- Includes ten 15 ml ADC vials with traceable aqueous PVP solutions at concentrations from 10% to 50%.
- Includes four 15 ml HPLC-water reference vials, fiducial markers, a 0.4 mm to 0.8 mm resolution pattern and 10-degree slice-profile crossed wedges.
- The public spec sheet lists an MR-readable LC thermometer for temperature compensation from 15 C to 24 C and compatibility with qCal-MR QA/QC software.
Official sources
Information basis
Official public CaliberMRI Mini Hybrid Phantom page and Model 137 public spec sheet. Interphysix copy is original and conservative.










