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Left Atrial Appendage white paper

Left Atrial Appendage white paper
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Pre-operative planning PIE MEDICAL IMAGING solutions in cardiovascular analysis

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Assessment of the Left Atrial Appendage (LAA) based on MSCT imaging yields useful information regarding anatomy, size and presence of thrombus. Patients with presence of thrombus in the LAA who have atrial fibrillation are at risk of stroke when the thrombus would dislodge from the LAA and enter the main bloodstream. To prevent thrombus from entering the blood stream several percutaneous LAA closure devices are available. Pre-operative planning based on MSCT imaging can assist in device selection and preparation for the procedure in the catheterization laboratory [1]. The LAA and thrombus...

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The solution – Dedicated LAA workflow OSTIUM SIZE, POSITION By identifying two landmarks, one in the circumflex coronary artery and one in the Coumadin ridge, the ostium of the LAA is traced. The size of the ostium is automatically presented. The size of the ostium is important for device selection. Using MSCT the different shapes of the LAA can easily be visualized. In below examples the different shapes are shown [3]. The shape of the appendage can be important for device selection and implantation depth. PRESENCE OF THROMBUS On the MPR CT images presence of thrombus can be seen easily as...

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OPTIMAL C-ARM PROJECTION Fluoroscopic/angiographic-like images can be created based on CTA images providing suggestive C-arm angles for specific views. It can help determine appropriate c-arm angles to perform procedures and understand viewing angles without extra contrast or X-ray exposure. Conclusion MSCT facilitates pre-operative planning of percutaneous LAA closure procedures and can address important factors such as shape of the LAA, ostium size and position and thrombus presence. References [1] Wang Y, Di Biase L, Natale A. Left atrial appendage studies by computed tomography to help...

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