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About CaliberMRI

CaliberMRI is manifesting the true power of quantitative MRI for better precision medicine

Our Vision

CaliberMRI believes that every MRI scanner should produce accurate and precise results that enhance the diagnostic and treatment capabilities of quantitative MRI (qMRI). Our qMRI phantoms were developed in collaboration with a variety of institutions, including the National Institute for Standards and Technology (NIST). Currently, our phantoms are utilized in many research institutions, clinics, and hospitals throughout the world.

Our qMRI Phantoms

We are proud to sell qMRI system, diffusion, breast, and prostate phantoms to research institutions, clinics, and hospitals.

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Our qMRI Software

We are excited to release our beta qCal software to a select group of existing research and clinical customers. Please consider adding your name to the waitlist as the software becomes more available.

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The CaliberMRI Team

Our team combines multi-decades worth of business and scientific experience

Bill Hollander

Founder & CEO


Bill Hollander is a self-educated scientific instrument maker and businessman who began his career at JILA, a joint NIST/CU Boulder research institution. In 1993, Bill founded High Precision Devices with one employee. HPD has grown into a 50+ employee company, known for excellence in engineering and manufacturing high quality instruments. Currently, Bill is the CEO of HPD and CaliberMRI.

Todor Karaulanov, Ph.D.

Chief Scientist


Todor Karaulanov, Ph.D. in Physics, is leading the development of CMRI’s QA/QC MRI platform and its introduction to clinical practice. Todor’s experience spans from research on atomic-based magnetic field sensors (IE/BAS, Bulgaria, and UC Berkeley) through the realization of the first ultra-low field MRI device based on atomic sensing technology (LANL) to the development of a unique platform/instrument for early specific cancer detection currently in use at the Imaging Physics Department of MDAnderson Cancer Center.

Kevin Miller

Director of Business Development


Kevin Miller has over three decades of experience with advanced technology and business development, and program management. At CaliberMRI, Kevin applies his scientific and business experience to the identification and evaluation of new business opportunities, and customer support.

Our Partners and Customers

Talk to us about our qMRI phantom products

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