Dosimetry Certificate (CDC)

In the last few years changes in radiation therapy have radically changed the practice of Medical Dosimetry. Dosimetry now demands an expanded skill set to meet the requirements of new technology and diagnostic techniques, including Respiratory Gating, Tomotherapy and PET-CT.

Purpose of the Program

The Dosimetry Certificate (CDC) is intended to provide a mechanism for radiation therapists (RTTs) to demonstrate knowledge and competence in the field of Dosimetry, to promote standards of excellence within this clinical area, and to identify those who have met a nationally recognized standard in the practice of Dosimetry.

Program Overview

The following is an overview of the Dosimetry Certificate program.  For detailed information, download the Program Handbook.

There are three components of the CDC (Dosimetry Certificate) program — didactic, clinical* and research*.

*The clinical and research components are available to registered candidates only.

Didactic Component

Clinical Component

Research Component

Clinical Advisor

The clinical component requires the candidate to identify a clinical advisor. The clinical advisor must:

  • be a dosimetrist / treatment planner with a current CDC designation or a qualified clinical medical physicist working in the appropriate discipline
  • have five years’ experience in either dosimetry/treatment planning/medical physics
  • perform the assessment on the candidate for procedures/associated competencies or delegate assessment to another therapist
  • verify that the delegated advisors identified to assess candidates are competent in their practice


Candidates of the CDC program must complete both the didactic and clinical components within a five-year time frame. This timeframe begins on the date of successful completion of Dosimetry 1.*


As of January 2016, the CAMRT has changed the credential given by the CAMRT for completion of the Dosimetry Certificate. The credential for this program has changed from CDS to CDC and stands for the ‘Canadian Dosimetry Certificate”.

Candidates who successfully complete the didactic, clinical & research components as per the CDC program requirements receive a Dosimetry Certificate and can use the credential CDC.

The Committee strongly advocates for continued competence through continuing professional development.

Certificate Program Handbook

The Dosimetry Certificate Program Handbook

For more information on this Certificate Program:

CAMRT’s Canadian Dosimetry Certificate (CDC) vs MDCB’s Certified Medical Dosimetrist (CMD):


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