Research ArticleRadiation Safety

Lower Radiation Dosing in Cardiac CT Angiography: The CONVERGE Registry

Paul Madaj, Dong Li, Rine Nakanishi, Daniele Andreini, Gianluca Pontone, Edoardo Conte, Rachael O’Rourke Franzcr, Christian Hamilton-Craig, Manojna Nimmagadda, Nicholas Kim, Badiha Fatima, Christopher Dailing and Matthew J. Budoff
Journal of Nuclear Medicine Technology March 2020, 48 (1) 58-62; DOI: https://doi.org/10.2967/jnmt.119.229500

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Tables

  • TABLE 1

    Demographic and Clinical Characteristics

    CharacteristicControl group (n = 110)Test group (n = 110)P
    Age (y)60.2 ± 12.561.1 ± 12.50.615
    Female (n)34 (31.5%)35 (31.8%)0.957
    Weight (kg)83.5 ± 17.083.3 ± 17.10.949
    BMI28.7 ± 6.127.2 ± 4.40.326
    Total DLP (for 110 patients) (mGy-cm)141.0 ± 78.8 (1.97 ± 1.10 mSv)113.5 ± 53.6 (1.59 ± 0.75 mSv)0.0037
    DLP stratified by BMI (mGy-cm)
     Normal weight (BMI, 18.5–24.9)111.2 ± 84.7 (1.56 ± 1.19 mSv)76.1 ± 49.0 (1.07 ± 0.69 mSv)0.044
     Overweight (BMI, 25–29.9)133.0 ± 55.1 (1.86 ± 0.77 mSv)112.4 ± 52.1 (1.57 ± 0.73 mSv)0.047
     Obese (BMI, >30)169.2 ± 74.1 (2.37 ± 1.04 mSv)142.3 ± 28.9 (1.99 ± 0.40 mSv)0.0004

    • Values are expressed as mean ± SD, except for age.

  • TABLE 2

    Association of DLP Levels and BMI Between Test Group and Control Group

    BMIDLP (mGy-cm) (n = 110)β95% confidence intervalP
    18.5 ≤ BMI ≤ 24.976.1 ± 49.0 (1.07 ± 0.69 mSv)0 (reference)
    25 ≤ BMI ≤ 29.9112.4 ± 52.1 (1.57 ± 0.73 mSv)28.3 (SE, 11.1)6.5–50.10.011*
    30 ≤ BMI142.3 ± 28.9 (1.99 ± 0.40 mSv)53.8 (SE, 11.9)28.2–75.8<0.001*

    • *Adjusted for age and sex.

    • DLP values are expressed as mean ± SD.

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