Works by Wirestam, Ronnie

Results: 54

Core curriculum for medical physicists in radiology. Recommendations from an EFOMP/ESR working group.

Published in:

2012

By:

Geleijns, Jacob;
Breatnach, Éamann;
Cantera, Alfonso;
Damilakis, John;
Dendy, Philip;
Evans, Anthony;
Faulkner, Keith;
Padovani, Renato;
Putten, Wil;
Schad, Lothar;
Wirestam, Ronnie;
Eudaldo, Teresa

Publication type:

Editorial

Correspondence.

Published in:

1999

By:

Stahlberg, Freddy;
Brockstedt, Sara;
Thomsen, Carsten;
Wirestam, Ronnie

Publication type:

Letter

Denoising of complex MRI data by wavelet-domain filtering: Application to high- b-value diffusion-weighted imaging.

Published in:

Magnetic Resonance in Medicine, 2006, v. 56, n. 5, p. 1114, doi. 10.1002/mrm.21036

By:

Wirestam, Ronnie;
Bibic, Adnan;
Lätt, Jimmy;
Brockstedt, Sara;
Ståhlberg, Freddy

Publication type:

Article

Assessment of regional cerebral blood flow by dynamic susceptibility contrast MRI using different deconvolution techniques.

Published in:

Magnetic Resonance in Medicine, 2000, v. 43, n. 5, p. 691, doi. 10.1002/(SICI)1522-2594(200005)43:5<691::AID-MRM11>3.0.CO;2-B

By:

Wirestam, Ronnie;
Andersson, Linda;
Ostergaard, Leif;
Bolling, Max;
Aunola, Juha-Petri;
Lindgren, Arne;
Geijer, Bo;
Holtås, Stig;
Ståhlberg, Freddy

Publication type:

Article

A computer simulation program for mr imaging: application to rf and static magnetic field imperfections.

Published in:

Magnetic Resonance in Medicine, 1995, v. 34, n. 4, p. 612, doi. 10.1002/mrm.1910340418

By:

Olsson, Magnus B. E.;
Wirestam, Ronnie;
Persson, Bertil R. R.

Publication type:

Article

Prediction of Consolidation Tumor Ratio on Planning CT Images of Lung Cancer Patients Treated with Radiotherapy Based on Deep Learning.

Published in:

Applied Sciences (2076-3417), 2024, v. 14, n. 8, p. 3275, doi. 10.3390/app14083275

By:

Tong, Yizhi;
Arimura, Hidetaka;
Yoshitake, Tadamasa;
Cui, Yunhao;
Kodama, Takumi;
Shioyama, Yoshiyuki;
Wirestam, Ronnie;
Yabuuchi, Hidetake

Publication type:

Article

Simplified treatment planning for interstitial laser thermotherapy by disregarding light transport: a numerical study.

Published in:

1999

By:

Olsrud, Johan;
Wirestam, Ronnie;
Persson, Bertil R.R.;
Tranberg, Karl-G.;
Olsrud, J;
Wirestam, R;
Persson, B R;
Tranberg, K G

Publication type:

journal article

Absolute quantification of cerebral blood flow in normal volunteers: Correlation between Xe-133 SPECT and dynamic susceptibility contrast MRI.

Published in:

Journal of Magnetic Resonance Imaging, 2007, v. 26, n. 4, p. 913, doi. 10.1002/jmri.21093

By:

Knutsson, Linda;
Börjesson, Siv;
Larsson, Elna-Marie;
Risberg, Jarl;
Gustafson, Lars;
Passant, Ulla;
Ståhlberg, Freddy;
Wirestam, Ronnie

Publication type:

Article

Calculation of cerebral perfusion parameters using regional arterial input functions identified by factor analysis.

Published in:

Journal of Magnetic Resonance Imaging, 2006, v. 23, n. 4, p. 444, doi. 10.1002/jmri.20535

By:

Knutsson, Linda;
Larsson, Elna-Marie;
Thilmann, Oliver;
Ståhlberg, Freddy;
Wirestam, Ronnie

Publication type:

Article

Comparison of contrast agents with high molarity and with weak protein binding in cerebral perfusion imaging at 3 T.

Published in:

Journal of Magnetic Resonance Imaging, 2005, v. 22, n. 5, p. 597, doi. 10.1002/jmri.20420

By:

Thilmann, Oliver;
Larsson, Elna-Marie;
Björkman-Burtscher, Isabella M.;
Ståhlberg, Freddy;
Wirestam, Ronnie

Publication type:

Article

Theoretical and experimental evaluation of phase-dispersion effects caused by brain motion in diffusion and perfusion MR imaging.

Published in:

1996

By:

Wirestam, Ronnie;
Greitz, Dan;
Thomsen, Carsten;
Brockstedt, Sara;
Olsson, Magnus B. E.;
Ståhlberg, Freddy;
Wirestam, R;
Greitz, D;
Thomsen, C;
Brockstedt, S;
Olsson, M B;
Stahlberg, F

Publication type:

journal article

Comparison of MRI methods for measuring whole‐brain oxygen extraction fraction under different geometric conditions at 7T.

Published in:

Journal of Neuroimaging, 2022, v. 32, n. 3, p. 442, doi. 10.1111/jon.12975

By:

Lundberg, Anna;
Lind, Emelie;
Olsson, Hampus;
Helms, Gunther;
Knutsson, Linda;
Wirestam, Ronnie

Publication type:

Article

Quantification of normal cerebral oxygen extraction and oxygen metabolism by phase-based MRI susceptometry: evaluation of repeatability using two different imaging protocols.

Published in:

Clinical Physiology & Functional Imaging, 2017, v. 37, n. 2, p. 211, doi. 10.1111/cpf.12288

By:

Kämpe, Robin;
Lind, Emelie;
Ståhlberg, Freddy;
Westen, Danielle;
Knutsson, Linda;
Wirestam, Ronnie

Publication type:

Article

Cerebral perfusion information obtained by dynamic contrast-enhanced phase-shift magnetic resonance imaging: comparison with model-free arterial spin labelling.

Published in:

Clinical Physiology & Functional Imaging, 2010, v. 30, n. 5, p. 375, doi. 10.1111/j.1475-097X.2010.00947.x

By:

Wirestam, Ronnie;
Lindgren, Emelie;
van Westen, Danielle;
Bloch, Karin Markenroth;
Ståhlberg, Freddy;
Knutsson, Linda

Publication type:

Article

Assessment of MRI contrast agent concentration by quantitative susceptibility mapping (QSM): application to estimation of cerebral blood volume during steady state.

Published in:

MAGMA: Magnetic Resonance Materials in Physics, Biology & Medicine, 2017, v. 30, n. 6, p. 555, doi. 10.1007/s10334-017-0637-9

By:

Lind, Emelie;
Knutsson, Linda;
Kämpe, Robin;
Ståhlberg, Freddy;
Wirestam, Ronnie

Publication type:

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

Correlation between arterial blood volume obtained by arterial spin labelling and cerebral blood volume in intracranial tumours.

Published in:

MAGMA: Magnetic Resonance Materials in Physics, Biology & Medicine, 2011, v. 24, n. 4, p. 211, doi. 10.1007/s10334-011-0255-x

By:

Westen, Danielle;
Petersen, Esben;
Wirestam, Ronnie;
Siemund, Roger;
Bloch, Karin;
Ståhlberg, Freddy;
Björkman-Burtscher, Isabella;
Knutsson, Linda

Publication type:

Article

Phase-based arterial input functions in humans applied to dynamic contrast-enhanced MRI: potential usefulness and limitations.

Published in:

MAGMA: Magnetic Resonance Materials in Physics, Biology & Medicine, 2011, v. 24, n. 4, p. 233, doi. 10.1007/s10334-011-0257-8

By:

Garpebring, Anders;
Wirestam, Ronnie;
Yu, Jun;
Asklund, Thomas;
Karlsson, Mikael

Publication type:

Article

Dimensionality reduction of fMRI time series data using locally linear embedding.

Published in:

MAGMA: Magnetic Resonance Materials in Physics, Biology & Medicine, 2010, v. 23, n. 5/6, p. 327, doi. 10.1007/s10334-010-0204-0

By:

Mannfolk, Peter;
Wirestam, Ronnie;
Nilsson, Markus;
Ståhlberg, Freddy;
Olsrud, Johan

Publication type:

Article

Denoising of arterial spin labeling data: wavelet-domain filtering compared with Gaussian smoothing.

Published in:

MAGMA: Magnetic Resonance Materials in Physics, Biology & Medicine, 2010, v. 23, n. 3, p. 125, doi. 10.1007/s10334-010-0209-8

By:

Bibic, Adnan;
Knutsson, Linda;
Ståhlberg, Freddy;
Wirestam, Ronnie

Publication type:

Article

Absolute quantification of perfusion using dynamic susceptibility contrast MRI: pitfalls and possibilities.

Published in:

MAGMA: Magnetic Resonance Materials in Physics, Biology & Medicine, 2010, v. 23, n. 1, p. 1, doi. 10.1007/s10334-009-0190-2

By:

Knutsson, Linda;
Ståhlberg, Freddy;
Wirestam, Ronnie

Publication type:

Article

Effects of restricted diffusion in a biological phantom: a q-space diffusion MRI study of asparagus stems at a 3T clinical scanner.

Published in:

MAGMA: Magnetic Resonance Materials in Physics, Biology & Medicine, 2007, v. 20, n. 4, p. 213, doi. 10.1007/s10334-007-0085-z

By:

Jimmy LÃ¤tt;
Markus Nilsson;
Anna RydhÃ¶g;
Ronnie Wirestam

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

Measurement of vascular water transport in human subjects using time-resolved pulsed arterial spin labelling.

Published in:

NMR in Biomedicine, 2015, v. 28, n. 8, p. 1059, doi. 10.1002/nbm.3344

By:

Bibic, Adnan;
Knutsson, Linda;
Schmidt, Anders;
Henningsson, Erik;
Månsson, Sven;
Abul‐Kasim, Kasim;
Åkeson, Jonas;
Gunther, Matthias;
Ståhlberg, Freddy;
Wirestam, Ronnie

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

Combined diffusion weighting and CSF suppression in functional MRI.

Published in:

NMR in Biomedicine, 2002, v. 15, n. 3, p. 235, doi. 10.1002/nbm.767

By:

Andersson, Linda;
Bolling, Max;
Wirestam, Ronnie;
Holtås, Stig;
Ståhlberg, Freddy

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

Regional values of diffusional kurtosis estimates in the healthy brain.

Published in:

2013

By:

Lätt, Jimmy;
Nilsson, Markus;
Wirestam, Ronnie;
Ståhlberg, Freddy;
Karlsson, Nils;
Johansson, Mikael;
Sundgren, Pia C;
van Westen, Danielle

Publication type:

journal article

Regional values of diffusional kurtosis estimates in the healthy brain.

Published in:

Journal of Magnetic Resonance Imaging, 2013, v. 37, n. 3, p. 610, doi. 10.1002/jmri.23857

By:

Lätt, Jimmy;
Nilsson, Markus;
Wirestam, Ronnie;
Ståhlberg, Freddy;
Karlsson, Nils;
Johansson, Mikael;
SundgrEN, Pia C.;
van WestEN, Danielle

Publication type:

Article

Can resting-state functional MRI serve as a complement to task-based mapping of sensorimotor function? A test-retest reliability study in healthy volunteers.

Published in:

Journal of Magnetic Resonance Imaging, 2011, v. 34, n. 3, p. 511, doi. 10.1002/jmri.22654

By:

Mannfolk, Peter;
Nilsson, Markus;
Hansson, Henrik;
Ståhlberg, Freddy;
Fransson, Peter;
Weibull, Andreas;
Svensson, Jonas;
Wirestam, Ronnie;
Olsrud, Johan

Publication type:

Article

Temporal Shift When Comparing Contrast-Agent Concentration Curves Estimated Using Quantitative Susceptibility Mapping (QSM) and ΔR2*: The Association Between Vortex Parameters and Oxygen Extraction Fraction.

Published in:

Tomography: A Journal for Imaging Research, 2025, v. 11, n. 4, p. 46, doi. 10.3390/tomography11040046

By:

Wirestam, Ronnie;
Lundberg, Anna;
Knutsson, Linda;
Lind, Emelie

Publication type:

Article

Radiofrequency Bias Correction of Magnetization Prepared Rapid Gradient Echo MRI at 7.0 Tesla Using an External Reference in a Sequential Protocol.

Published in:

Tomography: A Journal for Imaging Research, 2021, v. 7, n. 3, p. 434, doi. 10.3390/tomography7030038

By:

Olsson, Hampus;
Novén, Mikael;
Lätt, Jimmy;
Wirestam, Ronnie;
Helms, Gunther

Publication type:

Article

MRI-Based Quantification of Magnetic Susceptibility in Gel Phantoms: Assessment of Measurement and Calculation Accuracy.

Published in:

Radiology Research & Practice, 2018, p. 1, doi. 10.1155/2018/6709525

By:

Olsson, Emma;
Wirestam, Ronnie;
Lind, Emelie

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

Dynamic contrast-enhanced QSM for perfusion imaging: a systematic comparison of ΔR2*- and QSM-based contrast agent concentration time curves in blood and tissue.

Published in:

MAGMA: Magnetic Resonance Materials in Physics, Biology & Medicine, 2020, v. 33, n. 5, p. 663, doi. 10.1007/s10334-020-00831-x

By:

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

Publication type:

Article

Machine learning‐based multi‐pool Voigt fitting of CEST, rNOE, and MTC in Z‐spectra.

Published in:

Magnetic Resonance in Medicine, 2025, v. 94, n. 1, p. 346, doi. 10.1002/mrm.30460

By:

Mohammed Ali, Sajad;
van Zijl, Peter C. M.;
Prasuhn, Jannik;
Wirestam, Ronnie;
Knutsson, Linda;
Yadav, Nirbhay N.

Publication type:

Article

Deep learning–based Lorentzian fitting of water saturation shift referencing spectra in MRI.

Published in:

Magnetic Resonance in Medicine, 2023, v. 90, n. 4, p. 1610, doi. 10.1002/mrm.29718

By:

Mohammed Ali, Sajad;
Yadav, Nirbhay N.;
Wirestam, Ronnie;
Singh, Munendra;
Heo, Hye‐Young;
van Zijl, Peter C.;
Knutsson, Linda

Publication type:

Article

A numerical human brain phantom for dynamic glucose‐enhanced (DGE) MRI: On the influence of head motion at 3T.

Published in:

Magnetic Resonance in Medicine, 2023, v. 89, n. 5, p. 1871, doi. 10.1002/mrm.29563

By:

Lehmann, Patrick M.;
Seidemo, Anina;
Andersen, Mads;
Xu, Xiang;
Li, Xu;
Yadav, Nirbhay N.;
Wirestam, Ronnie;
Liebig, Patrick;
Testud, Frederik;
Sundgren, Pia;
van Zijl, Peter C. M.;
Knutsson, Linda

Publication type:

Article

Mapping magnetization transfer saturation (MT<sub>sat</sub>) in human brain at 7T: Protocol optimization under specific absorption rate constraints.

Published in:

Magnetic Resonance in Medicine, 2021, v. 86, n. 5, p. 2562, doi. 10.1002/mrm.28899

By:

Olsson, Hampus;
Andersen, Mads;
Wirestam, Ronnie;
Helms, Gunther

Publication type:

Article

Reducing bias in dual flip angle T<sub>1</sub>‐mapping in human brain at 7T.

Published in:

Magnetic Resonance in Medicine, 2020, v. 84, n. 3, p. 1347, doi. 10.1002/mrm.28206

By:

Olsson, Hampus;
Andersen, Mads;
Lätt, Jimmy;
Wirestam, Ronnie;
Helms, Gunther

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

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

Combining phase and magnitude information for contrast agent quantification in dynamic contrast-enhanced MRI using statistical modeling.

Published in:

Magnetic Resonance in Medicine, 2015, v. 74, n. 4, p. 1156, doi. 10.1002/mrm.25490

By:

Brynolfsson, Patrik;
Yu, Jun;
Wirestam, Ronnie;
Karlsson, Mikael;
Garpebring, Anders

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

Uncertainty estimation in dynamic contrast-enhanced MRI.

Published in:

Magnetic Resonance in Medicine, 2013, v. 69, n. 4, p. 992, doi. 10.1002/mrm.24328

By:

Garpebring, Anders;
Brynolfsson, Patrik;
Yu, Jun;
Wirestam, Ronnie;
Johansson, Adam;
Asklund, Thomas;
Karlsson, Mikael

Publication type:

Article

Effects of inflow and radiofrequency spoiling on the arterial input function in dynamic contrast-enhanced MRI: A combined phantom and simulation study.

Published in:

Magnetic Resonance in Medicine, 2011, v. 65, n. 6, p. 1670, doi. 10.1002/mrm.22760

By:

Garpebring, Anders;
Wirestam, Ronnie;
Östlund, Nils;
Karlsson, Mikael

Publication type:

Article

Effects of red blood cells with reduced deformability on cerebral blood flow and vascular water transport: measurements in rats using time-resolved pulsed arterial spin labelling at 9.4 T.

Published in:

European Radiology Experimental, 2021, v. 5, n. 1, p. 1, doi. 10.1186/s41747-021-00243-z

By:

Bibic, Adnan;
Sordia, Tea;
Henningsson, Erik;
Knutsson, Linda;
Ståhlberg, Freddy;
Wirestam, Ronnie

Publication type:

Article