Works by Ahlgren, André

Results: 21

Cerebral Perfusion Does Not Increase after Shunt Surgery for Normal Pressure Hydrocephalus.

Published in:

2020

By:

Virhammar, Johan;
Ahlgren, André;
Cesarini, Kristina G.;
Laurell, Katarina;
Larsson, Elna‐Marie;
Larsson, Elna-Marie

Publication type:

journal article

Visual Assessment of Brain Perfusion MRI Scans in Dementia: A Pilot Study.

Published in:

2016

By:

Fällmar, David;
Lilja, Johan;
Velickaite, Vilma;
Danfors, Torsten;
Lubberink, Mark;
Ahlgren, André;
Osch, Matthias J.P.;
Kilander, Lena;
Larsson, Elna‐Marie

Publication type:

journal article

Dynamic susceptibility contrast perfusion MRI using phase-based venous output functions: comparison with pseudo-continuous arterial spin labelling and assessment of contrast agent concentration in large veins.

Published in:

MAGMA: Magnetic Resonance Materials in Physics, Biology & Medicine, 2016, v. 29, n. 6, p. 823, doi. 10.1007/s10334-016-0567-y

By:

Wirestam, Ronnie;
Lind, Emelie;
Ahlgren, André;
Ståhlberg, Freddy;
Knutsson, Linda

Publication type:

Article

Automatic brain segmentation using fractional signal modeling of a multiple flip angle, spoiled gradient-recalled echo acquisition.

Published in:

MAGMA: Magnetic Resonance Materials in Physics, Biology & Medicine, 2014, v. 27, n. 6, p. 551, doi. 10.1007/s10334-014-0439-2

By:

Ahlgren, André;
Wirestam, Ronnie;
Ståhlberg, Freddy;
Knutsson, Linda

Publication type:

Article

Absolute quantification of perfusion by dynamic susceptibility contrast MRI using Bookend and VASO steady-state CBV calibration: a comparison with pseudo-continuous ASL.

Published in:

MAGMA: Magnetic Resonance Materials in Physics, Biology & Medicine, 2014, v. 27, n. 6, p. 487, doi. 10.1007/s10334-014-0431-x

By:

Lindgren, Emelie;
Wirestam, Ronnie;
Markenroth Bloch, Karin;
Ahlgren, André;
Osch, Matthias;
Westen, Danielle;
Surova, Yulia;
Ståhlberg, Freddy;
Knutsson, Linda

Publication type:

Article

Quantification of microcirculatory parameters by joint analysis of flow-compensated and non-flow-compensated intravoxel incoherent motion (IVIM) data.

Published in:

NMR in Biomedicine, 2016, v. 29, n. 5, p. 640, doi. 10.1002/nbm.3505

By:

Ahlgren, André;
Knutsson, Linda;
Wirestam, Ronnie;
Nilsson, Markus;
Ståhlberg, Freddy;
Topgaard, Daniel;
Lasič, Samo

Publication type:

Article

Partial volume correction of brain perfusion estimates using the inherent signal data of time-resolved arterial spin labeling.

Published in:

NMR in Biomedicine, 2014, v. 27, n. 9, p. 1112, doi. 10.1002/nbm.3164

By:

Ahlgren, André;
Wirestam, Ronnie;
Petersen, Esben Thade;
Ståhlberg, Freddy;
Knutsson, Linda

Publication type:

Article

Reduction of arterial partial volume effects for improved absolute quantification of DSC-MRI perfusion estimates: Comparison between tail scaling and prebolus administration.

Published in:

Journal of Magnetic Resonance Imaging, 2015, v. 41, n. 4, p. 903, doi. 10.1002/jmri.24621

By:

Knutsson, Linda;
Lindgren, Emelie;
Ahlgren, André;
van Osch, Matthias J.P.;
Markenroth Bloch, Karin;
Surova, Yulia;
Ståhlberg, Freddy;
van Westen, Danielle;
Wirestam, Ronnie

Publication type:

Article

Non-parametric deconvolution using Bézier curves for quantification of cerebral perfusion in dynamic susceptibility contrast MRI.

Published in:

MAGMA: Magnetic Resonance Materials in Physics, Biology & Medicine, 2022, v. 35, n. 5, p. 791, doi. 10.1007/s10334-021-00995-0

By:

Chakwizira, Arthur;
Ahlgren, André;
Knutsson, Linda;
Wirestam, Ronnie

Publication type:

Article

Relationship Between Quantitative Magnetic Resonance Imaging Measures and Functional Changes in Patients With Duchenne Muscular Dystrophy.

Published in:

Muscle & Nerve, 2025, v. 71, n. 3, p. 343, doi. 10.1002/mus.28321

By:

Sherlock, Sarah P.;
McCrady, Allison;
Palmer, Jeffrey;
Aghamolaey, Haleh;
Ahlgren, André;
Widholm, Per;
Dahlqvist Leinhard, Olof;
Karlsson, Markus

Publication type:

Article

Volumetric muscle composition analysis in sporadic inclusion body myositis using fat‐referenced magnetic resonance imaging: Disease pattern, repeatability, and natural progression.

Published in:

Muscle & Nerve, 2024, v. 70, n. 6, p. 1181, doi. 10.1002/mus.28252

By:

Heerfordt, John;
Karlsson, Markus;
Kusama, Midori;
Ogata, Seiya;
Mukasa, Ryuta;
Kiyosawa, Naoki;
Sato, Noriko;
Widholm, Per;
Dahlqvist Leinhard, Olof;
Ahlgren, André;
Mori‐Yoshimura, Madoka

Publication type:

Article

Quantitative muscle analysis in facioscapulohumeral muscular dystrophy using whole‐body fat‐referenced MRI: Protocol development, multicenter feasibility, and repeatability.

Published in:

Muscle & Nerve, 2022, v. 66, n. 2, p. 183, doi. 10.1002/mus.27638

By:

Widholm, Per;
Ahlgren, André;
Karlsson, Markus;
Romu, Thobias;
Tawil, Rabi;
Wagner, Kathryn R.;
Statland, Jeffrey M.;
Wang, Leo H.;
Shieh, Perry B.;
van Engelen, Baziel G. M.;
Cadavid, Diego;
Ronco, Lucienne;
Odueyungbo, Adefowope O.;
Jiang, John G.;
Mellion, Michelle L.;
Dahlqvist Leinhard, Olof

Publication type:

Article

Body composition profiling at 0.55T: Feasibility and precision.

Published in:

Magnetic Resonance in Medicine, 2023, v. 90, n. 3, p. 1114, doi. 10.1002/mrm.29682

By:

Nayak, Krishna S.;
Cui, Sophia X.;
Tasdelen, Bilal;
Yagiz, Ecrin;
Weston, Sarah;
Zhong, Xiaodong;
Ahlgren, André

Publication type:

Article

Reproducibility and repeatability of MRI‐based body composition analysis.

Published in:

Magnetic Resonance in Medicine, 2020, v. 84, n. 6, p. 3146, doi. 10.1002/mrm.28360

By:

Borga, Magnus;
Ahlgren, André;
Romu, Thobias;
Widholm, Per;
Dahlqvist Leinhard, Olof;
West, Janne

Publication type:

Article

Improved calculation of the equilibrium magnetization of arterial blood in arterial spin labeling.

Published in:

Magnetic Resonance in Medicine, 2018, v. 80, n. 5, p. 2223, doi. 10.1002/mrm.27193

By:

Ahlgren, André;
Wirestam, Ronnie;
Knutsson, Linda;
Petersen, Esben Thade

Publication type:

Article

CEST, ASL, and magnetization transfer contrast: How similar pulse sequences detect different phenomena.

Published in:

Magnetic Resonance in Medicine, 2018, v. 80, n. 4, p. 1320, doi. 10.1002/mrm.27341

By:

Knutsson, Linda;
Xu, Jiadi;
Ahlgren, André;
van Zijl, Peter C. M.

Publication type:

Article

A linear mixed perfusion model for tissue partial volume correction of perfusion estimates in dynamic susceptibility contrast MRI: Impact on absolute quantification, repeatability, and agreement with pseudo-continuous arterial spin labeling.

Published in:

Magnetic Resonance in Medicine, 2017, v. 77, n. 6, p. 2203, doi. 10.1002/mrm.26305

By:

Ahlgren, André;
Wirestam, Ronnie;
Lind, Emelie;
Ståhlberg, Freddy;
Knutsson, Linda

Publication type:

Article

Dynamic susceptibility contrast MRI with a prebolus contrast agent administration design for improved absolute quantification of perfusion.

Published in:

Magnetic Resonance in Medicine, 2014, v. 72, n. 4, p. 996, doi. 10.1002/mrm.25006

By:

Knutsson, Linda;
Lindgren, Emelie;
Ahlgren, André;
van Osch, Matthias J.P.;
Bloch, Karin Markenroth;
Surova, Yulia;
Ståhlberg, Freddy;
van Westen, Danielle;
Wirestam, Ronnie

Publication type:

Article

Perfusion quantification by model-free arterial spin labeling using nonlinear stochastic regularization deconvolution.

Published in:

Magnetic Resonance in Medicine, 2013, v. 70, n. 5, p. 1470, doi. 10.1002/mrm.24587

By:

Ahlgren, André;
Wirestam, Ronnie;
Petersen, Esben Thade;
Ståhlberg, Freddy;
Knutsson, Linda

Publication type:

Article

A novel approach to measure local cerebral haematocrit using MRI.

Published in:

Journal of Cerebral Blood Flow & Metabolism, 2016, v. 36, n. 4, p. 768, doi. 10.1177/0271678X15606143

By:

Calamante, Fernando;
Ahlgren, André;
van Osch, Matthias J. P.;
Knutsson, Linda

Publication type:

Article

Idiopathic normal pressure hydrocephalus: cerebral perfusion measured with pCASL before and repeatedly after CSF removal.

Published in:

Journal of Cerebral Blood Flow & Metabolism, 2014, v. 34, n. 11, p. 1771, doi. 10.1038/jcbfm.2014.138

By:

Virhammar, Johan;
Laurell, Katarina;
Ahlgren, André;
Cesarini, Kristina Giuliana;
Larsson, Elna-Marie

Publication type:

Article