Respiratory imaging technology firm 4DMedical (ASX:4DX) has signed a five-year software-as-a-service (SaaS) contract with the University of Miami to offer its X-ray Velocimetry Lung Ventilation Analysis Software (XV LVAS) ventilation reports.

The contract represents a milestone in the company's commercialisation journey and paves the way for further expansion of XV Technology in the US market.

Moreover, 4DMedical says the deal includes minimum annual fees and validates the efficacy and utility of XV Technology.

Shares of 4DMedical (ASX:4DX) were up 50% at 1:45pm AEST.