Výsledky vyhledávání - "Curtis N, Wiens"

Akademický článek

Optimization of Gradient-Echo Echo-Planar Imaging for T2* Contrast in the Brain at 0.5 T

Autor: Arjama Halder, Chad T. Harris, Curtis N. Wiens, Andrea Soddu, Blaine A. Chronik

Publikováno v: Sensors, Vol 23, Iss 20, p 8428 (2023)

Gradient-recalled echo (GRE) echo-planar imaging (EPI) is an efficient MRI pulse sequence that is commonly used for several enticing applications, including functional MRI (fMRI), susceptibility-weighted imaging (SWI), and proton resonance frequency

Externí odkaz: https://doaj.org/article/fd87329504bc4512a2406b4f3949d7b2

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Akademický článek

Quantification of fetal organ volume and fat deposition following in utero exposure to maternal Western Diet using MRI.

Autor: Kevin J Sinclair, Lanette J Friesen-Waldner, Colin M McCurdy, Curtis N Wiens, Trevor P Wade, Barbra de Vrijer, Timothy R H Regnault, Charles A McKenzie

Publikováno v: PLoS ONE, Vol 13, Iss 2, p e0192900 (2018)

To examine the feasibility of using MRI to identify differences in liver size and fat deposition in fetal guinea pigs exposed to an in utero environment influenced by maternal consumption of a Western diet.Female guinea pigs fed either an energy-dens

Externí odkaz: https://doaj.org/article/8a020e581cb04574b20cc0068e0ba190

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Free‐breathing liver fat and quantification using motion‐corrected averaging based on a nonlocal means algorithm

Autor: Diego Hernando, Huiwen Luo, Curtis N. Wiens, Kevin M. Johnson, Jitka Starekova, Scott B. Reeder, Ante Zhu, Ann Shimakawa

Publikováno v: Magnetic Resonance in Medicine. 85:653-666

Purpose To propose a motion-robust chemical shift-encoded (CSE) method with high signal-to-noise (SNR) for accurate quantification of liver proton density fat fraction (PDFF) and R 2 ∗ . Methods A free-breathing multi-repetition 2D CSE acquisition

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f1ee04dbf9d98467c52173c2fb29785d
https://doi.org/10.1002/mrm.28439

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Prospective comparison of longitudinal change in hepatic proton density fat fraction (PDFF) estimated by magnitude-based MRI (MRI-M) and complex-based MRI (MRI-C)

Autor: Kathryn J. Fowler, Guilherme M. Campos, Nathan S. Artz, Michael S. Middleton, Adrija Mamidipalli, Scott B. Reeder, Calvin Andrew Tran, Curtis N. Wiens, Luke M. Funk, Alan B. McMillan, Claude B. Sirlin, Jeffrey B. Schwimmer, Jacob A. Greenberg, Gavin Hamilton, Soudabeh Fazeli, Tanya Wolfson, Yesenia Covarrubias, Anthony Gamst

Publikováno v: Eur Radiol
European radiology, vol 30, iss 9

To compare longitudinal hepatic proton density fat fraction (PDFF) changes estimated by magnitude- vs. complex-based chemical-shift-encoded MRI during a weight loss surgery (WLS) program in severely obese adults with biopsy-proven nonalcoholic fatty

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eb59cc6573ecf08b3b8da3f50ecd2fd5
https://doi.org/10.1007/s00330-020-06858-x

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Accuracy of common proton density fat fraction thresholds for magnitude- and complex-based chemical shift-encoded MRI for assessing hepatic steatosis in patients with obesity

Autor: Luke M. Funk, Tanya Wolfson, Michael S. Middleton, Scott B. Reeder, Alexandra Schlein, Curtis N. Wiens, Guilherme M. Campos, Yesenia Covarrubias, Alan B. McMillan, Gavin Hamilton, Guilherme Moura Cunha, Anthony Gamst, Tydus T. Thai, Jeffrey B. Schwimmer, Claude B. Sirlin, Rashmi Agni, Santiago Horgan, Garth Jacobson

Publikováno v: Abdom Radiol (NY)

PURPOSE: MRI proton density fat fraction (PDFF) can be calculated using magnitude (MRI-M) or complex (MRI-C) MRI data. The purpose of this study was to identify, assess and compare the accuracy of common PDFF thresholds for MRI-M and MRI-C for assess

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::492714fdfc0b8077e6fe380027865890
https://doi.org/10.1007/s00261-019-02350-3

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Noise properties of proton density fat fraction estimated using chemical shift-encoded MRI

Autor: James H. Holmes, Scott B. Reeder, Diego Hernando, Curtis N. Wiens, Nathan T. Roberts

Publikováno v: Magnetic Resonance in Medicine. 80:685-695

Purpose The purpose of this work is to characterize the noise distribution of proton density fat fraction (PDFF) measured using chemical shift-encoded MRI, and to provide alternative strategies to reduce bias in PDFF estimation. Theory We derived the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1edae19319e60d6a5ada2d67df76a603
https://doi.org/10.1002/mrm.27065

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Monitoring Fatty Liver Disease with MRI Following Bariatric Surgery: A Prospective, Dual-Center Study

Autor: Luke M. Funk, Scott B. Reeder, Santiago Horgan, Alexandra Schlein, Jonathan Hooker, Guilherme M. Campos, Jeffrey B. Schwimmer, Tanya Wolfson, B. Dustin Pooler, Nathan S. Artz, Anthony Gamst, Garth R. Jacobsen, Curtis N. Wiens, Claude B. Sirlin, Alan B. McMillan, Jacob A. Greenberg, Yesenia Covarrubias

Publikováno v: Pooler, B Dustin; Wiens, Curtis N; McMillan, Alan; Artz, Nathan S; Schlein, Alexandra; Covarrubias, Yesenia; et al.(2019). Monitoring Fatty Liver Disease with MRI Following Bariatric Surgery: A Prospective, Dual-Center Study.. Radiology, 290(3), 682-690. doi: 10.1148/radiol.2018181134. UC San Diego: Retrieved from: http://www.escholarship.org/uc/item/8875f67j
Radiology, vol 290, iss 3

PURPOSE: To longitudinally monitor liver fat before and after bariatric surgery by using quantitative chemical shift-encoded (CSE) MRI and to compare with changes in body mass index (BMI), weight, and waist circumference (WC). MATERIALS AND METHODS:

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2a1f857258269b60feb5e9eb1c989556
http://www.escholarship.org/uc/item/8875f67j

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Externally calibrated parallel imaging for 3D multispectral imaging near metallic implants using broadband ultrashort echo time imaging

Autor: Hyungseok Jang, Scott B. Reeder, Nathan S. Artz, Curtis N. Wiens, Alan B. McMillan

Publikováno v: Magnetic Resonance in Medicine. 77:2303-2309

PURPOSE To develop an externally calibrated parallel imaging technique for three-dimensional multispectral imaging (3D-MSI) in the presence of metallic implants. THEORY AND METHODS A fast, ultrashort echo time (UTE) calibration acquisition is propose

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a3057b3c8fbd97def9b398e61f3b44ea
https://doi.org/10.1002/mrm.26327

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Accelerating fully phase-encoded MRI near metal using multiband radiofrequency excitation

Autor: Curtis N. Wiens, Nathan S. Artz, Alexey Samsonov, Matthew R. Smith, Diego Hernando, Scott B. Reeder

Publikováno v: Magnetic Resonance in Medicine. 77:1223-1230

Purpose To develop a multiband radiofrequency (RF) excitation strategy for simultaneous excitation of multiple RF offsets to accelerate fully phase-encoded imaging near metallic prostheses. Methods Multiband RF excitation was designed and incorporate

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::aef820a9d72d90db35bb1af7cba19a49
https://doi.org/10.1002/mrm.26209

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Ramped hybrid encoding for improved ultrashort echo time imaging

Autor: Hyungseok Jang, Curtis N. Wiens, Alan B. McMillan

Publikováno v: Magnetic Resonance in Medicine. 76:814-825

Purpose We propose a new acquisition to minimize the per-excitation encoding duration and improve the imaging capability for short T2* species. Methods In the proposed ramped hybrid encoding (RHE) technique, gradients are applied before the radiofreq

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1c9e1dd4a26f2d6372d9468bbaeefb7c
https://doi.org/10.1002/mrm.25977

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