Positron Emission Tomography/Computed Tomography Scanner for Pre-Transcatheter Aortic Valve Replacement Assessment

Figures

• 

  Figure 1. Double Oblique Multiplanar Reconstruction and 3-Dimensional Volume Rendering Showing Calcific Aortic Stenosis In late systole (45% phase), the aortic annulus (minimum and maximum diameters, area, and perimeter) and the left and right coronary heights and the sinuses of Valsalva heights were measured.

• 

  Figure 2. Coronal, Sagittal, and Axial Views Obtained for the Evaluation of Peripheral Access A non–electrocardiography-gated aortogram scan was performed, extending from the aortic arch cranially to the femoral arteries caudally. Curved multiplanar reconstruction reconstruction allowed evaluation of the entire thoracoabdominal aorta. Image quality was deemed excellent.

• 

  Figure 3. Postprocedural Transthoracic Echocardiogram Assessment CW Doppler across the aortic prosthesis shows normal transvalvular gradients (peak gradient 7 mm Hg, mean gradient 4 mm Hg, Vmax 137 cm/s). CW = continuous wave Doppler.

• 

  Visual Summary. Comprehensive Pre-TAVR Assessment Using PET/CT Scanner The PET/CT scanner offers a valid and safe alternative to a dedicated CT system, providing high-quality images suitable for a comprehensive and thorough pre-TAVR assessment. Retrospective ECG-gated volume acquisition was acquired, and double oblique multiplanar reconstruction (MPR) and 3-dimensional volume rendering showed calcific aortic stenosis. Non–ECG-gated aortogram scan was acquired, extending from the aortic arch cranially to the femoral arteries caudally. Curved MPR reconstruction allowed evaluation of the entire thoracoabdominal aorta. Image quality was deemed excellent. CT = computed tomography; ECG = electrocardiography; PET = positron emission tomography; TAVR = transcatheter aortic valve replacement.