Baltimore, Maryland, – January 14 , 2026 — Radiopharmaceutical Imaging and Dosimetry, LLC (Rapid®) today announced that the UK Medicines and Healthcare products Regulatory Agency (MHRA) has acknowledged the registration of Rapid and its flagship dosimetry software, 3D-RD-S, enabling commercial distribution under its CE Mark clearance. Effective December 4, 2025, Rapid is now authorized to offer 3D-RD-S to customers throughout the United Kingdom.
This authorization represents a significant milestone for Rapid as it expands access to its cloud-based radiopharmaceutical dosimetry platform in a key global market. Under this recognition, Rapid will continue operating under its existing CE Mark clearance, which remains valid for use in the UK until June 30, 2030. Ahead of this deadline, the company will transition to UKCA marking to ensure seamless and uninterrupted compliance. Rapid extends its appreciation to MedEnvoy Global BV, servicing as both its EU Authorized Representative and UK Responsible Person, as well as the internal regulatory and operations teams whose efforts made this achievement possible.
About 3D-RD-S
3D-RD-S is Rapid’s flagship, cloud-based radiopharmaceutical dosimetry application used by sponsors, imaging CROs, and clinical teams worldwide. 3D-RD-S can be used to calculate an estimate absorbed radiation dose and related radiobiological response metrics that translate absorbed doses into likely biological responses. The software is already cleared for commercial distribution in the United States, further demonstrating its global regulatory acceptance.
About Rapid
Rapid provides a growing suite of software solutions alongside comprehensive expert services in quantitative imaging and dosimetry. The company supports both pre-clinical and clinical studies required for regulatory approval and for the safe, effective clinical implementation of radiopharmaceutical therapies. Rapid’s team brings more than 90 years of combined expertise in nuclear medicine, quantitative imaging, and dosimetry science.
For more information or to request a demo of 3D-RD-S, visit:
https://rapiddosimetry.com/product/#3D-RD-S
To learn more about Rapid’s full suite of service and product solutions, visit:
www.rapiddosimetry.com
Media Contact:
Denis Sgouros
Rapid
dsgouros@rapiddosimetry.com
www.rapiddosimetry.com