Zobrazeno 1 - 10
of 45
pro vyhledávání: '"Ruitian Song"'
Autor:
Ruitian Song, Scott N. Hwang, Chris Goode, Diana Storment, Matthew Scoggins, Zachary Abramson, Claudia M. Hillenbrand, Belinda Mandrell, Kevin Krull, Wilburn E. Reddick
Publikováno v:
Investigative radiology. 57(12)
The 2-point DIXON method is widely used to assess fat fractions (FFs) in magnetic resonance images (MRIs) of the tongue, pharyngeal wall, and surrounding tissues in patients with obstructive sleep apnea (OSA). However, the method is semiquantitative
Publikováno v:
Plant, Cell & Environment. 45:2780-2793
Adaptive response to stress involves an extensive reprogramming of gene expression. Under stressful conditions, the induction of efficient changes in messenger RNA (mRNA) production is crucial for maximized plant survival. Transcription and pre-mRNA
Publikováno v:
J Magn Reson Imaging
BACKGROUND: In archived diffusion tensor imaging (DTI) studies, a reversed-phase encoding (PE) scan required to correct the distortion in single-shot echo-planar imaging (EPI) may not have been acquired. Furthermore, DTI tractography is adversely aff
Autor:
Ruitian Song, Joseph L. Holtrop, Claudia M. Hillenbrand, Jane S. Hankins, M. Beth McCarville, Ralf B. Loeffler
Publikováno v:
Magnetic Resonance in Medicine. 79:2978-2985
Purpose To develop a computationally fast and accurate algorithm for mono-exponential signal modelling and validate the new technique in the context of R2* mapping for iron overload assessment. Methods An algorithm is introduced that directly calcula
Automated vessel exclusion technique for quantitative assessment of hepatic iron overload by R2*-MRI
Autor:
Claudia M. Hillenbrand, Jane S. Hankins, M. Beth McCarville, Ruitian Song, Ralf B. Loeffler, Aaryani Tipirneni-Sajja
Publikováno v:
Journal of Magnetic Resonance Imaging. 47:1542-1551
BACKGROUND Extraction of liver parenchyma is an important step in the evaluation of R2*-based hepatic iron content (HIC). Traditionally, this is performed by radiologists via whole-liver contouring and T2*-thresholding to exclude hepatic vessels. How
Quantitative ultrashort echo time imaging for assessment of massive iron overload at 1.5 and 3 Tesla
Autor:
M. Beth McCarville, Claudia M. Hillenbrand, Ruitian Song, Ralf B. Loeffler, Jane S. Hankins, Aaryani Tipirneni-Sajja, Axel J. Krafft, Matthew D. Robson
Publikováno v:
Magnetic Resonance in Medicine. 78:1839-1851
Purpose Hepatic iron content (HIC) quantification via transverse relaxation rate (R2*)-MRI using multi-gradient echo (mGRE) imaging is compromised toward high HIC or at higher fields due to the rapid signal decay. Our study aims at presenting an opti
Autor:
Jane S. Hankins, Ralf B. Loeffler, Axel J. Krafft, Ruitian Song, Aaryani Tipirneni-Sajja, Armita Bahrami, Claudia M. Hillenbrand
Publikováno v:
J Magn Reson Imaging
Background Measuring hepatic R2* by fitting a monoexponential model to the signal decay of a multigradient-echo (mGRE) sequence noninvasively determines hepatic iron content (HIC). Concurrent hepatic steatosis introduces signal oscillations and confo
Autor:
Axel J. Krafft, Ralf B. Loeffler, Ruitian Song, Jane S. Hankins, Xiao Bian, Claudia M. Hillenbrand, M. Beth McCarville
Publikováno v:
Magnetic Resonance in Medicine. 76:591-601
Purpose Fat suppression (FS) via chemically selective saturation (CHESS) eliminates fat–water oscillations in multiecho gradient echo (mGRE) R2*-MRI. However, for increasing R2* values as seen with increasing liver iron content (LIC), the water sig
Automated vessel exclusion technique for quantitative assessment of hepatic iron overload by R2*-MRI
Autor:
Aaryani, Tipirneni-Sajja, Ruitian, Song, M Beth, McCarville, Ralf B, Loeffler, Jane S, Hankins, Claudia M, Hillenbrand
Publikováno v:
Journal of magnetic resonance imaging : JMRI. 47(6)
BACKGROUND: Extraction of liver parenchyma is an important step in the evaluation of R2*-based hepatic iron content (HIC). Traditionally, this is performed by radiologists via whole-liver contouring and T2*-thresholding to exclude hepatic vessels. Ho
Autor:
Ralf B. Loeffler, Ruitian Song, M. Beth McCarville, Jane S. Hankins, Aaryani Tipirneni-Sajja, Axel J. Krafft, Claudia M. Hillenbrand
Publikováno v:
AJR. American journal of roentgenology. 209(1)
The objective of this study is to evaluate radial free-breathing (FB) multiecho ultrashort TE (UTE) imaging as an alternative to Cartesian FB multiecho gradient-recalled echo (GRE) imaging for quantitative assessment of hepatic iron content (HIC) in