Clinical Advancements in Angiographic Imaging

phaseXact GUEST SPEAKERS Frank J. Rybicki, MD, PhD Director of Applied Imaging Sciences, Department of Radiology Co-Director, Cardiovascular Imaging Section Brigham and Women’s Hospital ™ Automatic Phase Cardiac Reconstruction Multi-detector CT, particularly 64-slice CT, has had a dramatic impact on the diagnosis of coronary artery disease. Coronary CT Angiography, or Cardiac CT, acquires large volumes of thin-slice, Richard Mather, PhD Senior Manager, Clinical Science Toshiba America Medical Systems, Inc. high-resolution data which can be rendered by advanced 3D volume and vessel visualization software to streamline image interpretation. When these thin-slice data sets are sent for processing, it is often assumed that the phase, or phases, with the least cardiac motion have already been determined. Unfortunately, with conventional reconstruction techniques, no objective analysis of the individual patient’s unique cardiac motion is typically performed, and the true optimal phase is often not found. The clinician’s ability to rapidly and accurately evaluate the coronaries is dependent on analyzing the cardiac phase with the least amount of motion. Choosing a suboptimal reconstruction phase can degrade image quality and compromise the signiﬁcant advances in hardware and post-processing mentioned above by introducing unnecessary motion artifact. Ultimately, the presence of these artifacts (e.g., stair-stepping, blurring, and coronary arterial discontinuity) introduces an unnecessary challenge into image interpretation. At best, these artifacts increase the time needed for image interpretation and at worst they could even lead to misdiagnoses. As such, phase selection is a critical component of cardiac CT angiography. 4 Oc tober 2 0 0 7 A public ation produced by Toshiba Medic al Sys t ems

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Contents PhaseXact™: Automatic Phase Cardiac Reconstruction Giant Internal Carotid Aneurysm Non-Contrast SSFP Time-SLIP Imaging: Renal Artery Stenosis Springhill Medical Center: A Partnership to Improve Patient Safety Anterior Cerebral Artery Aneurysm Right Coronary Artery (RCA) lesion with SUREPlaque analysis Neurovascular CTA: When every second counts

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