Improving image quality of the brain by using IRIS and X-Care
SOMATOM Definition Flash Scanning
Author: By Dominik Augart, Barbara Wieser, Christoph Becker, MD Department of Radiology Ludwig-Maximilians-University Munich, Germany
A 76-year-old female patient with a chronic dural hematoma following a fall presented at our department. The first scan was performed 24 hours after the fall with a SOMATOM Sensation, 64-slice scanner utilizing CARE Dose4D. To check progress of the wound, a follow-up scan of the skull was requested. An additional exam was taken 7 days later with a SOMATOM Definition Flash utilizing IRIS and X-CARE, and Neuro BestContrast.
Diagnosis The first scan revealed a chronic subdural hematoma with old as well as fresh blood. There was no indication of intra-cerebral, subarachnoid or intra-ventricular bleeding. Additionally, there was no indication of an ischemic event. A significantly better judgment of the spread and differentiation between old and new blood as well as the chronic subdural hematoma was first possible with the second examination one week later. This clearly showed additional hypodense structure indicating fresh bleeding that could not be detected in the previous examination.
Comments Due to the newest scan and reconstruction technologies, a significantly better image quality resulted making possible a better delineation of bleeding possible. The differentiation between old and new blood was also substantially improved. A further significant advantage of these new procedures is not only better image quality but also dose reduction. In our follow-up study, we were able to determine, in addition to an overall dose reduction, close to 40% less dose applied to the eye lens. This is particularly important in order to minimize the possibility of long-term damage to the eye lens for young patients who must undergo repeated scans.
SOMATOM Definition Flash
SOMATOM Sensation 64
CARE Dose4D, X-CARE
128 x 0.6
40 x 0.6
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The drugs and doses mentioned herein are consistent with the approval labeling for uses and/or indications of the drug. The treating physician bears the sole responsibility for the diagnosis and treatment of patients, including drugs and doses prescribed in connection with such use. The Operating Instructions must always be strictly followed when operating the CT System. The source for the technical data is the corresponding data sheets. Results may vary.