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Presentations - Initial Experience Using High Speed True Volume CT

Dr. John Troupis – Monash Medical Center, Australia

Dr. Troupis is the Co Unit Head of Cardiac CT and the Unit Head of Musculoskeletal imaging at Monash Medical Centre, Melbourne, Australia. With the assistance of a dedicated team of both cardiologists and radiologists, he has been instrumental in establishing a highly efficient and research oriented Cardiac CT service. The department has been at the forefront of establishing techniques for scanning atrial fibrillation patients, routinely scanning at submillisievert scans, and establishing the principle of high quality scanning when the heart rate is greater than the temporal resolution of the scanner. He is an author and co-author of numerous articles. His articles in AJR including "Image Quality of Coronary 320-MDCT in Patients With Atrial Fibrillation: Initial Experience", published December 2009, and "Coronary image quality of 320-MDCT in patients with heart rates above 65 beats per minute: preliminary experience", published June 2011, were instrumental in advancing the technique of Cardiac CT scanning. His current research focus includes non-coronary Cardiac CT with emphasis on the myocardium and aortic root in addition to wide field of view 4D CT and investigation of instability and impingement syndromes.

Keynote Highlights

4 D CT – Aquilion Vision Initial Experience Using High Speed True Volume CT

"The faster rotation time permits one beat cardiac imaging up to 75 BPM. " said Dr. John Troupis, Co Unit Head of Cardiac CT and the Unit Head of Musculoskeletal imaging at Monash Medical Centre, Melbourne, Australia. Dr. Troupis also shared a case example of a patient where a Cardiac CTA scan was performed to rule out coronary artery disease (70 year old male with a BMI 21.6). The coronary cardiac CT-low dose perfusion CTA clearly showed LAD & LCX stenosis. The stress perfusion images effectively demonstrated a perfusion defect in the anterior and anterolateral walls of the myocardium corresponding to the myocardial supply from the LAD and LCX arteries. The faster rotation time contributed to superior imaging in the end-systolic phase. AIDR 3D was integrated into the automatic exposure control software, which prospectively calculates the tube current for each examination based on our preferred reference image quality. Quite simply there is no guess work needed, and the perfect balance of image quality at reduced dose is completely automated with consistent results."

 

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