Results 171 to 180 of about 55,201 (283)
Calibration‐Free GRAPE pTx Pulses for Homogeneous Spatial‐Selective Excitation at 7T
ABSTRACT Purpose Extend the universal pulse GRAPE formalism to pulses with a defined spectral response, and apply the concept to spatial selection. Methods We added Bloch simulations at several frequencies for each voxel to the pulse calculation to create universal spectrally‐selective GRAPE pulses.
Daniel Löwen +6 more
wiley +1 more source
LOCAL DIVERGENCE-FREE IMMERSED FINITE ELEMENT-DIFFERENCE METHOD USING COMPOSITE B-SPLINES. [PDF]
Li L, Gruninger C, Lee JH, Griffith BE.
europepmc +1 more source
Respiratory Motion‐Corrected Model‐Based 3D Water‐Fat MRA of the Thorax at 0.55 T
ABSTRACT Purpose The goal of this study was to develop a 5‐min 3D MRA acquisition at 0.55 T with predictable scan time, 100% data efficiency, and robust water‐fat separation. Methods For full data efficiency, the proposed method combined self‐gating with retrospective motion correction while ensuring a predictable 5‐min scan time.
Robert Stoll +5 more
wiley +1 more source
A fast, accurate and oscillation-free spectral collocation solver for high-dimensional transport problems. [PDF]
Cavallini N +3 more
europepmc +1 more source
ABSTRACT Purpose First‐pass perfusion cardiovascular MR (FPP‐CMR) enables the non‐invasive diagnosis of microcirculation and coronary artery disease. In free‐breathing FPP‐CMR, motion correction is usually performed in the image domain, requiring an initial reconstruction.
Elisa Moya‐Sáez +10 more
wiley +1 more source
GAMA: A Robust and Automated Fragment-Based Quantum Chemistry Method for Biomolecular Systems. [PDF]
Kundu S, Saha A.
europepmc +1 more source
ABSTRACT Purpose To develop and validate a protocol for simultaneous volumetric T1 and T2 mapping with blood‐ and fat‐suppression, and apply it to patients with abdominal aortic aneurysms (AAA) to assess tissue characteristics. Methods A spoiled gradient echo (SPGR) variable flip angle (VFA) acquisition was modified with preparation modules to suppress
Wilhelm Stehling +7 more
wiley +1 more source
On solving coordinate problems in climate model output and other geospatial datasets. [PDF]
Cherblanc C +4 more
europepmc +1 more source
Thin body treatment on unstructured, Cartesian grid
航空宇宙技術研究所 12-13 Jun. 1997 東京 日本 National Aerospace Laboratory 12-13 Jun. 1997 Tokyo Japan 通常用いられる物体適合スキームのように、矩形格子は物体の輪郭には従わない。この格子は、完全航空機形態のような複雑機体形状の取扱い時に、格子生成を容易にし、生成時間サイクルを短縮する。これらは機体適合法に優る主な利点である。しかしながら、単純矩形格子生成では、機体寸法がセルサイズより小さい(薄い機体)場合、セルの中にある別の流体領域を誤って1つの流体領域(多流域問題)として考えるため、誤りの結果を生ずる。本論文では、セルを自動的に個別のサブセルに分割する新しいセル切断手順を提案した。機体の鋭く尖ったエッジにおいても ...
openaire
ABSTRACT Purpose Quantitative mapping of cardiac tissue properties is used clinically in diagnosis and monitoring of a wide variety of cardiac pathologies. Cardiac Magnetic Resonance Fingerprinting (cMRF) enables rapid and simultaneous quantification of multiple parameters in the myocardium from a single scan.
Evan Cummings +5 more
wiley +1 more source

