AI Article Synopsis
- A study analyzed radiation exposure in 312 patients who received CT scans of the upper limb over three years, using a formula to calculate effective radiation doses.
- The average effective doses varied significantly, with shoulder CT exposing patients to an average of 10.83 mSv, while wrist and elbow CTs had much lower doses.
- The research also indicated that the lifetime risk of cancer from these scans was relatively low, with shoulder CT presenting a risk of 0.6/1000 for males and 0.73/1000 for females, while raising the arm during elbow CT reduced radiation exposure.
Article Abstract
To investigate exposure to radiation we identified a cohort of 312 patients who underwent standardized CT of an upper limb within a three years period. The effective dose per dose length product coefficient was used to calculate the effective doses of radiation. Mean effective doses were as follows: shoulder CT, 10.83 (SD 6.36) mSv; wrist CT, 0.15 (SD 0.07) mSv; elbow CT performed with the arm above the head, 0.21 (SD 0.11) mSv and with the arm adjacent to the torso, 13.1 (SD 10.8) mSv. The corresponding lifetime attributable risk of cancer was 0.6/1000 for males and 0.73/1000 for females for shoulder CT and 0.75/1000 for males and 0.96/1000 for females for elbow CT with the arm adjacent to torso. The effective doses for CT scans of the wrist and of the elbow performed with the arm above the head were low. For elbow CT scans, elevating the arm above the head decreases the radiation doses.
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