Virtual endoscopy using multidetector-row CT for coil occlusion of patent ductus arteriosus

The objective of this study was to report the clinical value of virtual endoscopy using multidetector-row CT (MDCT) for coil occlusion of patent ductus arteriosus (PDA). We studied 10 consecutive patients with PDA undergoing cardiac catheterization and coil occlusion. All patients had previously undergone MDCT, and subsequently underwent transcatheter closure of ductus. MDCT evaluations were performed again in 1-3 months after occlusion. Virtual endoscopy showed the anatomy of the orifice of the ductus and spatial relations of adjacent structures from both the aortic and pulmonary sides in all patients. We were able to observe the inner space, and fly through the PDA. This approach is the virtual view of the catheter advancing during coil occlusion. Following occlusion, visualization of the coil can also be established by viewing from inside. Coil protrusion into the aortic and pulmonary sides was clearly observed. Virtual endoscopy provides unique information regarding the ductal lumen that is of use for the coil occlusion of PDA.