Reduction of Scan Time and Echo Time in 3D Time-of-Flight (TOF) MR Angiography, Using Reverse Elliptical Centric Dual-Echo Acquisition
نویسندگان
چکیده
منابع مشابه
ToF-SWI: A Dual-Echo Sequence for simultaneous Time-of-Flight angiography and Susceptibility Weighted Imaging
A. Deistung, E. Dittrich, J. Sedlacik, A. Rauscher, and J. R. Reichenbach Medical Physics Group, Institute for Diagnostic and Interventional Radiology, University Clinics, Friedrich-Schiller-University, Jena, Germany, Department of Medical Engineering and Biotechnology, University of Applied Sciences, Jena, Germany, Radiological Sciences, Translational Imaging, St. Jude Children's Research Hosp...
متن کاملCluster-based segmentation of dual-echo ultra-short echo time images for PET/MR bone localization
BACKGROUND Magnetic resonance (MR)-based attenuation correction is a critical component of integrated positron emission tomography (PET)/MR scanners. It is generally achieved by segmenting MR images into tissue classes with known attenuation properties (e.g., bone, fat, soft tissue, lung, air). Ultra-short echo time (UTE) have been proposed in the past to locate bone tissue. In this study, tri-...
متن کاملUltrashort echo time imaging using pointwise encoding time reduction with radial acquisition (PETRA).
Sequences with ultrashort echo times enable new applications of MRI, including bone, tendon, ligament, and dental imaging. In this article, a sequence is presented that achieves the shortest possible encoding time for each k-space point, limited by pulse length, hardware switching times, and gradient performance of the scanner. In pointwise encoding time reduction with radial acquisition (PETRA...
متن کاملFunctional MRI with variable echo time acquisition.
A new functional MRI protocol that integrates variable echo time (TE) acquisition and a block-design paradigm is proposed and evaluated with finger-tapping motor task. Simulations and experimental data show that the blood oxygenation level-dependent (BOLD) sensitivity achieved with this approach is comparable to that achieved using a conventional constant-TE protocol. The proposed variable-TE f...
متن کاملOptimized 3D ultrashort echo time pulmonary MRI.
PURPOSE To optimize 3D radial ultrashort echo time MRI for high resolution whole-lung imaging. METHODS 3D radial ultrashort echo time was implemented on a 3T scanner to investigate the effects of: (1) limited field-of-view excitation, (2) variable density readouts, and (3) radial oversampling. Improvements in noise performance and spatial resolution were assessed through simulation and phanto...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: BIO Web of Conferences
سال: 2017
ISSN: 2117-4458
DOI: 10.1051/bioconf/20170802014