Radioprotection in chest CT: An approach with bismuth breast shield

Rui Pedro Pereira de Almeida, Everaldo Santos, Patrick Sousa, Sónia Rodrigues, Luis Ribeiro, Kevin Azevedo, Nuno Pinto, António Fernando Caldeira Lagem Abrantes

    Research output: Contribution to journalArticlepeer-review


    The main goal of this study was to assess the viability of the bismuth breast shield in chest computed tomography (CT ) examinations. Dose measurements on a phantom (Cardinal Health 76 415) with an ionisation chamber were performed with and without bismuth breast protection in different configurations using the routine chest CT protocol. Image quality control was performed using a phantom (Gammex 464). In all measurements with bismuth protection (no sponges), we observed a dose decrease of 22.6%. Dose decreased by 19.9% with protection (one sponge), 17.6% with protection (two sponges) and 28.2% with the protection coupled to the gantry. It is therefore appropriate to implement the protection configuration coupled to the gantry as a protective measure for patients undergoing chest CT scans.
    Original languageEnglish
    Pages (from-to)154-156
    Number of pages2
    Issue number2
    Publication statusPublished - 2017


    • radioprotection
    • chest computed tomography (CT)
    • bismuth breast shield


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