Preventable exposure in routine chest CT examinations: evaluation of effective dose beyond prescribed anatomical landmarks

Objective - Evaluate preventable exposure dose in routine chest CT examinations beyond prescribed anatomical landmarks and estimate extra dose delivered to the patient. Background/rationale - Recent technical advances have greatly increased the clinical applications of CT; developments in multidetector-row CT (MDCT) technology have occurred; the major disadvantage with the increased use of MDCT is associated radiation exposure.