Differential diagnosis of thrombosis and myxoma in unusual heart positions by dual-energy CT multiple parameter imaging: A case series

Figures

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  Figure 1.. Case 1. The images show a thrombus in the right ventricle. Echocardiography, showed a striated mass in the right ventricle (A); CT enhancement scan, the right ventricle can be seen classified round filling defect (B); arterial iodine map, the patient’s lesion arterial iodine concentration of 0.3 mg/mL (D); the effective atomic number map, the patient’s lesion Zeff is 8.34 HU/Z (E); the energy spectral curve schematic diagram, the value of λHu is 1.6 (F). Improved cardiac function, after anticoagulation, symptomatic treatment for 15 days and follow-up examination CTA of pulmonary artery: CTA of pulmonary artery did not show any abnormality, and there was no obvious abnormal density shadow in the right ventricle (C).

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  Figure 2.. Case 2. The images show a thrombus in the right atrium. Echocardiography showed an isoechoic mass in the right atrium, measuring about 15.36 × 17.45 mm (A); CT enhancement scan indicated a classically round filling defect in the right atrium (B); The arterial-phase iodine map showed the arterial-phase iodine concentration in the lesion of the patient in the present case was 0.6 mg/mL (D); The effective atomic number map shown the lesion of the patient in the present case had a Zeff of 8.15 HU/Z (E); and the energy spectrum curve was schematic, with λHu being valued as 1.1 (E). After 2 months of anticoagulation therapy, the echocardiogram was repeated, and no abnormal echoes were seen in the chambers of the heart (C).

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  Figure 3.. Case 3. The images show a myxoma in the right ventricle. Echocardiography, right ventricular free wall heterogeneous echogenic mass, lobulated, suggestive of right ventricular free wall mass (A); CT enhancement scan, right ventricle can be seen in a class of rounded low-density shadows, the edge of the arc-shaped calcification (B); MRI enhancement examination shows that the right ventricular free wall mass-like enhancement shadows, the edge of the visible line-like non-enhanced area, the lesion and the right ventricular free wall wide base is connected to the consideration of the possibility of myxoma (C). The arterial iodine concentration of the lesion was 2.8 mg/mL in the arterial iodine map (D); the effective atomic number map showed that the Zeff of the lesion was 9.10 HU/Z (E); and the λHu of the energy spectrum curve showed that the λHu was 2.9 (F).