Dose Reduction in Thoracic CT

Dose Reduction in Thoracic CT: A Comparison of on Line Automatic Dose Reduction and a 50% Reduction in Dose

Hypothesis: Does a 50% reduction in radiation in dose significantly affect the diagnostic quality of chest CT

Patients with Lymphoma are recruited and have a follow up CT performed at 50% of the standard exposure parameters. The studies are compared for image quality with a recent (<3 months) thoracic CT performed at standard exposure parameters.

Inclusion Criteria:

• Patients with Lymphoma

Exclusion Criteria:

• No recent (<3 months) thoracic CT