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CT scans are better than conventional X-ray examinations for showing bone, soft tissue and blood vessels.
The chest contains organs of the respiratory and cardiovascular systems, as well as the esophagus (hollow tube of muscle extending from below the tongue to the stomach). A CT scan of the chest may be performed to assess the chest and its organs for tumors and other lesions, injuries, intra-thoracic bleeding, infections, unexplained chest pain, obstructions, or other conditions, particularly when another type of examination, such as x-rays or physical examination, is not conclusive.
A CT scan of the chest may also be used to evaluate the effects of treatment of thoracic tumors. Another use of chest CT is to provide guidance for biopsies and/or aspiration of tissue from the chest.
There may be other reasons for your physician to recommend a CT scan of the chest.