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. Author manuscript; available in PMC: 2019 Sep 11.
Published in final edited form as: J Cardiovasc Comput Tomogr. 2017 Dec 5;12(1):81–85. doi: 10.1016/j.jcct.2017.11.015

Table 2.

Primary and secondary study endpoints.

Primary endpoint

  1. Radiation dose estimates of cardiac CT angiographies (CCTA) in daily practice

Secondary endpoints

  1. Variation of radiation dose estimates between

    • 1.1. a. Participating study sites, 1.1.b. countries and 1.1.c. continents

      1.2. CT systems

      1.3. CT vendors

    Experience of study sites in relation to radiation dose

    CCTA scan length and relationship between scan and heart length

    Application and efficacy of dose-saving strategies

    Image quality in relation to radiation dose estimatse

    Frequency of diagnostic or non-diagnostic (repetitive) scans