Dual Source CT - Gout imaging with Spiral Dual Energy Scanning
SOMATOM Definition Dual Energy Scanning
Author: Thorsten Johnson, MD, Sabine Weckbach, MD and Christoph R Becker, MD Section Chief Body CT, Department of Clinical Radiology, University Medical Center Grosshadern / Munich, Germany
A 37 year-old male was referred for a Dual Source CT for the evaluation of joint deformity. A contrast enhanced MDCT scan of the hand was performed on the SOMATOM Definition using spiral dual energy evaluation.
Diagnosis After the dual energy scan, a joint deformity was visible on the patient’s right index finger due to gout, which turned out to be the main cause for limitation of motion. These uric acid deposits develop mainly in cartilage tissue, tendons, and soft tissues. They usually develop only after a patient has suffered from the disease for many years.
Comments In the dual energy mode, two x-ray sources can be operated simultaneously at different kV levels. The results are two spiral data sets acquired in a single scan providing diverse information that allows one to differentiate, characterize, isolate, and distinguish the imaged tissue and material.
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