SURESubtraction CT
Body
Patient with known history of RCC and a partial nephrectomy. follow-up multi-phase CT was performed to asses local recurrence and potential metastasis. SCT iodine mapping clearly shows no iodine update indicating no tumor recurrence, resulting in a more confident diagnosis.
Courtesy of Prof. Roy and Prof Ohana, University Hospital of Strasbourg, France
Body
Follow-up multiphase CT exam post HCC treatment. The lipiodol used in the previous treatment obscures the contrast enhancement making it difficult to analyze the surrounding tissue. The patient was unable to hold their breath during the exam. These images were acquired during free breathing. SCT iodine maps were generated for all phases. SCT iodine mapping suppresses the lipiodol clearly, showing an enhancing lesion in the arterial phase near the initial HCC lesion and residual lipiodol. The lesion has the typical washout appearance on the delay phase consistent with recurrent HCC.
Courtesy of Prof. Ernst, Lille University Hospital, France
Virtual Contrast Boost
A sophisticated 3D deformable registration algorithm ensures accurate extraction of the iodine signal. Recombining the extracted iodine signal to the CTA data set increases the HU density of iodine. Similar to the increase of iodine density from low kV imaging. A virtual boost of contrast-enhanced signal for free.
Courtesy of Bradford Royal Infirmary, UK.
Lung
63-year-old patient presented for suspected pulmonary embolism. Scan was performed with 35ml of contrast and iodine maps were created automatically. A large wedge shaped perfusion deficit is seen in the right middle lobe corresponding to a small pulmonary embolism which was initially difficult to detect.
Courtesy of Institut Mutualiste Montsouris, Paris, France
Lung
This 60-year-old patient with a known right upper lobe lung tumor and mediastinal, hilar, and distant metastases presented with dyspnea and an elevated D-dimer blood test result. The tumor is compressing the pulmonary arteries, causing wedge-shaped perfusion defects in the iodine map images. In addition, pulmonary emboli are seen in the right lobar arteries, causing perfusion defects in the middle and lower lobes of the right lung.
Courtesy of Radboud UMC, Nijmegen, Netherlands
Ortho
SURESubtraction clearly shows the enhanced nidus of a osteoid osteoma which was difficult to identify on the native CT image.
Courtesy of Center Hospital University, Nancy, France
Gondim Teixeira PA et al. Invest Radiol 2014, 49: 156–164
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