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    Dual-source CT coronary angiography: Effectiveness of radiation dose reduction with lower tube voltage

    Access Status
    Fulltext not available
    Authors
    Sabarudin, A.
    Yusof, A.
    Tay, M.
    Ng, K.
    Sun, Zhonghua
    Date
    2013
    Type
    Journal Article
    
    Metadata
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    Citation
    Sabarudin, Akmal and Yusof, Ahmad Khairuddin Md and Tay, May Fang and Ng, Kwan-Hoong and Sun, Zhonghua. 2013. Dual-source CT coronary angiography: Effectiveness of radiation dose reduction with lower tube voltage. Radiation Protection Dosimetry. 153 (4): pp. 441-447.
    Source Title
    Radiation protection dosimetry
    DOI
    10.1093/rpd/ncs127
    ISSN
    1742-3406
    URI
    http://hdl.handle.net/20.500.11937/48023
    Collection
    • Curtin Research Publications
    Abstract

    This study was conducted to investigate the effectiveness of dose-saving protocols in dual-source computed tomography (CT) coronary angiography compared with invasive coronary angiography (ICA). On 50 patients who underwent coronary CT angiography was performed dual-source CT (DSCT) and compared with ICA procedures. Entrance skin dose (ESD), which was measured at the thyroid gland, and effective dose (E) were assessed for both imaging modalities. The mean ESD measured at the thyroid gland was the highest at 120 kVp, followed by the 100 kVp DSCT and the ICA protocols with 4.0±1.8, 2.7±1.0 and 1.1±1.2 mGy, respectively. The mean E was estimated to be 10.3±2.1, 6.2±2.3 and 5.3±3.4 mSv corresponding to the 120-kVp, 100-kVp DSCT and ICA protocols, respectively. The application of 100 kVp in DSCT coronary angiography is feasible only in patients with a low body mass index of <25 kg m−2, which leads to a significant dose reduction with the radiation dose being equivalent to that of ICA.

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