Table 1:

Standard 4D CT protocol in another patient^{^a}

Note:—CTDI_vol indicates CT dose index volume; DLP, dose-length product.
↵a These measurements obtained during our modified 4D CT scan on another weight- and sex-matched patient were compared with values obtained during standard 4D CT (including the precontrast scan) of our patient. They showed an estimated 20% reduction in the radiation exposure.