Electronic Posters: Cardiovascular
Tuesday 13:30-15:30 Computer 42
Yüklə 492,08 Kb.
|
| Tuesday 13:30-15:30 Computer 42
13:30 3777. Direct Imaging and Quantification of Carotid Plaque Calcification (CPC) Using Ultrashort TE Pulse Sequences Jiang Du1, Jacqueline Corbeil1, Richard Znamirowski1, Michael Peterson2, Niren Angle3, Graeme Bydder1, Andrew Kahn4 1Radiology, University of California, San Diego, CA, United States; 2Pathology, University of California, San Diego, CA, United States; 3Surgery, University of California, San Diego, CA, United States; 4Medicine, University of California, San Diego, CA, United States Carotid plaque vulnerability is dependent upon its tissue constituents, which may include fibrous tissue, lipid core, intra-plaque plaque hemorrhage as well as calcification. Clinical MR sequences have been employed to characterize the long T2 plaque components. Carotid plaque calcification (CPC) is undetectable with conventional clinical MR sequences. Here we describe the use of a 2D ultrashort TE (UTE) sequence combined with efficient long T2 suppression to image and characterize CPC (T2, T2* and water content) using a clinical 3T scanner. High spatial resolution micro-CT images were also acquired for comparison and validation. 14:00 3778. A New PVA-Based Dynamic Cardiac Phantom for Evaluation of Functional MR Imaging Methods at 3T Robert Manzke1, Anja Lutz2, Marcel Schenderlein3, Axel Bornstedt2, Raymond C. Chan4, Klaus Dietmeyer3, Volker Rasche5 1Tomographic Imaging, Philips Research Europe, Hamburg, Germany; 2Dept. of Internal Medicine II, University Hospital Ulm, Germany; 3Inst. Measurement, Control, and Microtechnology, University Ulm, Germany; 4Philips Research North America, Briarcliff Manor, NY, United States; 5Dept. of Internal Medicine II, University Hospital Ulm, Germany A new PVA-based dynamic cardiac MR phantom is introduced, aiming to enable cross validation of novel tagged and phase contrast MR methods specifically at 3T, aiding the development of clinically relevant functional MR techniques. Examples of phase contrast and tagged images using a 3T system with a 6 element cardiac coil are given. 14:30 3779. Balanced SSFP Spin-Labeled Angiography Using Sparse Data: Optimization and Application to Supraaortic Vessels Ioannis Koktzoglou1, Philip Hodnett, 1,2, Erik Offerman1, Robert Edelman1 1Radiology, NorthShore University HealthSystem, Evanston, IL, United States; 2Northwestern University, Chicago, IL, United States Arterial spin-labeled MRA using a balanced steady-state free precession is limited by flow artifacts in the setting of luminal narrowing. In a stenotic flow phantom, we show that these artifacts can be minimized with the use of abbreviated echo trains made possible with the use of parallel imaging acceleration and partial Fourier acquisition, and subsequently apply the technique in volunteers and patients. 15:00 3780. Magnetic Resonance Imaging Measurements Predict Need for Intervention in Patients Post Ross Procedure Anna Lakoma1, James C. Carr1 1Department of Radiology, Northwestern University, Chicago, IL, United States MRI derived pulmonary circulation parameters best predict need for future intervention in patients post Ross procedure. Yüklə 492,08 Kb. Dostları ilə paylaş:
|