Clinical Advancements in Angiographic Imaging

Neurovascular CTA: GUEST SPEAKERS Keith R. Peters, MD Associate Professor of Radiology and Co-director Endovascular Surgery University of Florida College of Medicine When every second counts Neurovascular CT angiography (CTA) has become the clinical tool of choice for clear, high-quality, three-dimensional data sets that aid in stroke evaluation and the study of inter-cranial vascular disorders. Providing the foundation for remarkably precise diagnosis and therapeutic planning, these volumerendered CTAs act as a detailed roadmap of the highly intricate neurovascular landscape. Beyond their non-invasive nature, CTAs offer optimal image quality and reduced patient exam times – giving the procedure an increasingly distinct advantage over the invasive conventional Digital Subtraction Angiography (DSA). Despite these advantages, however, it has been challenging for neurovascular CTAs to visualize vessels near the skull, such as in the petrous carotid region. These vessels run very close to the surrounding bone and can be easily obscured or distorted, causing a risk of misdiagnosis. The conventional 16 Oc tober 2 0 0 7 Babak S. Jahromi, MD, PhD, FRCSC Endovascular Fellow, University at Buffalo and Millard Fillmore Gates Circle Hospital method of manually removing bone from neurovascular CTAs can be labor intensive and lead to mixed results that depend heavily on the skills and experience of the workstation operator. Even computer-assisted segmentation techniques are susceptible to motion and routinely rely on image dilation and other processing methods prone to false stenoses. As a direct response to the need for more precise bone removal for neurovascular CTAs, Toshiba developed its patented SURE Subtraction™ software. Operating on the same principles as DSA, SURE Subtraction removes bone and other high-density structures from CTA images by subtracting a non-contrast volume from the contrast-enhanced CTA data set. 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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