Image Corner

Dual Source CT Enables High-Quality Cardiac Imaging Pre- and Post-TAVR Imaging

Shared by Siemens Healthineers.

Shared by Siemens Healthineers.

Clear diagnostic images are critical to the successful diagnosis and treatment of structural heart disease (SHD), regardless of the patient. Minneapolis Heart Institute at Abbott Northwestern Hospital performed an ultra-low-dose cardiac exam using a dual source computed tomography (CT) system (SOMATOM Force, Siemens Healthineers) that enables fast temporal resolution (66 ms) cardiac examinations. The exam consisted of a Turbo Flash and Retrospective ECG gated sequence with a single contrast injection. Examining structural abnormalities requires a clear, motion-free evaluation of the entire heart.

This case features images from the SHD journey of a 70-year-old patient who presented with heart failure and an ejection fraction (EF) of 32 percent. Post-transcatheter aortic valve replacement (TAVR) CT scans indicated that the patient was suffering from hypo-attenuated leaflet thickening (HALT) and hypo-attenuation affecting motion (HAM). Warfarin was started, and a six-month follow-up scan revealed resolution of HALT on one leaflet, but persistence on another leaflet. EF improved to 41 percent, demonstrating a reclassification of the patient’s EF from severely below to slightly below normal.¹ 

¹The statements by Siemens Healthineers customers described herein are based on results that were achieved in the customer’s unique setting. Because there is no “typical” hospital or laboratory and many variables exist (eg, hospital size, samples mix, case mix, level of IT and/or automation adoption) there can be no guarantee that other  customers will achieve the same results.