Fig 1.
Representative transverse CT sections of a female patient with a nodule (arrow) scanned with a standard dose protocol (lung dose 5.6 mGy) (a), and a male patient with a ground glass nodule at the fissure (arrow) scanned with a low-dose CT protocol (lung dose 0.44 mGy) (b).
Fig 2.
Coronal reformation of the CT for female patient (a) and corresponding dose distribution obtained by Monte Carlo simulations (b).
Note the spiral trajectory of the x-ray tube leading to heterogeneous dose distributions.
Table 1.
Dose and relative cancer risk for each individual patient (male-M, female-F) calculated for the standard dose protocol, sorted by patient age.
Table 2.
Dose and relative cancer risk for each individual patient (male-M, female-F) calculated for the low dose protocol, sorted by patient age.
Fig 3.
Scatter plots showing the correlation between lung dose and patient effective diameters for standard dose (SDCT) and low-dose CT (LDCT) examinations.
Fig 4.
Estimated lifetime attributable risk of cancer as a function of age for males and females from single standard dose (SDCT) and low-dose CT (LDCT) examination.