Contact

Dr. phil. Gisela Hagberg

Address: Spemannstr. 41
72076 Tübingen
Room number: 3.B.09
Phone: +49 7071 601 1648
Fax: +49 7071 601 652
E-Mail: gisela.hagberg

 

Picture of Hagberg, Gisela, Dr. phil.

Gisela Hagberg

Position: Guest Scientist  Unit: Scheffler

Applications of Ultra-High Field MRI in clinical scientific research

The availability of ultra-high magnetic field strengths radically widens our possibility to non-invasively investigate the structure and function of the human brain at a high level of detail.

MR-based signals are modulated at an even finer level, when water molecules move through the anatomical diversity of brain tissue. The composition and microstructure of the tissue give rise to local magnetic effects that influence the observable magnetization of water. These local fields change continuously with physiology and vary owing to brain function and pathology-related processes.

My research aims to explore how physiology and pathology influences the MR signal and vice versa, how image contrasts that match and enhance signals from the underlying tissue micro structure, especially those vulnerable to changes in pathology, can be achieved and quantified. The goal is to develop methods that allow quantitative structural and functional MR studies, and establish new clinical research tools.

 

You'll find out more about on-going clinical projects here.

Characterization of tissue heterogeneity in glial brain tumors

In this project we used Time-of-Flight (ToF) MRI, and SWI to pinpoint angiogenesis [1,2], while quantification of R2*/T2* and susceptibility was employed to characterize alterations of the tissue microstructure.

ToF imaging was possible to perform at high-fields, despite severe restrictions on the specific absorption rate. The short T2* of venous blood allowed suppression of unwanted signals through the use of long TE times [1]. However, the fine arteries inside tumors located at the cortical surface were not detectable by this approach,  probably owing to weak excitation.  We foresee that future use of pTX transmission technology will greatly enhance the possibility to visualize arteries under these circumstances.

In quantitative R2* maps, the poorly regulated blood and oxygen supply in tumors may hamper the visibility of the venous vessels. Nevertheless, through the enhanced sensitivity to susceptibility effects and fine resolution available at UHF, small veins and blood clots could be observed in R2* maps, while delineation of the tumor mass itself was excellent in quantitative T2* images.

We also found that quantification of susceptibility effects is helpful to detect local tumor tissue heterogeneity and through use of QSM, we could distinguish between blood clots and calcifications, as those typically encountered in oligodendroglioma tumors [2]. Key to these results was the development of methods to process the MRI phase images, which are used for QSM quantification [3].

 

Fig1: MRI at 9.4T of a patient with an oligodendroglioma showing: SWI–based minIP across 5mm (5slice); a): CT in Hounsfield Units; b): a phase image (in radians) obtained after spline filtering [3] (TE 14ms at 9.4T) showing the vessel and positive and negative phase changes inside the non-enhancing tissue; c): QSM map showing the local susceptibility values obtained from the filtered phase and modulus 3D gradient echo images, with increased susceptibility in the vessel (arrow) and a contiguous area in non-enhancing tissue, consistent with a calcification [2].

 

Molecular Imaging based MRI: the quest for high sensitivity at high fields

Dependent on the T1 and T2 time of the nuclear spins observed, imaging parameters that allow optimal contrast or the maximal signal to noise ratio can be derived. This step is critical to get the most out of molecular imagiing approaches, regardless of the compound used. In two separate projects we explored different approaches and determined the available MR signal. For 19F compounds we characterized the MRI method that yields the highest SNR per unit time, and showed how the agent itself influences detection sensitivity [4]. For Gadolinium-based compounds often used in clinical research, we charactarized  their performance at 3T, 7T and 9,4T in terms of the necessary dose and detection sensitivity, both as a function of imaging parameters [5].  We found that 10-15% lower contrast agent doses can be administered to the patients, provided that the relaxivity remains the same at 9.4T, holding promise for clinical research applications exploiting contrast agents at UHF.

 

Fig2: Relative signal as a function of T2 and the T2/T1 ratio when using the best imaging parameters for each sequence within a fixed scan time.

 

References

[1] Hagberg GE, Martirosian P, Bause J, Chadzynski GL,Pohmann R, Shajan G, Klose U, Scheffler K. (2013) Time-of-flight angiography in Humans at 94T Proc. Intl. Soc. Mag. Reson. Med. 21 1135

[2]  Hagberg GE, Balla DZ, Bisdas S, Budde J, Pohmann R, Klose U, Ethofer T, Scheffler K (2013) Localization of calcifications in an oligodendroglioma by quantitative susceptibility mapping at 9.4T presented at: ISMRM Scientific Workshop on Ultra High Field MRI 2-5 March, Nordwijk aan Zee, The Netherlands

[3]  Hagberg GE, Scheffler KS (2014) Model-free phase processing of multi-gradient-echo images at 9.4T Proc. Intl. Soc. Mag. Reson. Med. 22 3261

[4] Hagberg GE, Keliris A, Mamedov I, Placidi M, Merkle H,  Logothetis NK, Scheffler K. (2013) 19F-lanthanide complexes: T1- and T2-dependent signal gain using gradient echoes. Proc. Intl. Soc. Mag. Reson. Med. 21 1891

[5] Hagberg GE, Scheffler K.(2013) Effect of r₁ and r₂ relaxivity of gadolinium-based contrast agents on the T₁-weighted MR signal at increasing magnetic field strengths. Contrast Media Mol Imaging8(6):456-65.

EDUCATION
1985-1988    Institute of technology, Lund (LTH), Sweden
1988-1990    Institute of technology, Lausanne (EPFL), Switzerland. Engineering project: 2D Nuclear Overhauser Effects (G. Bodenhausen)
1990 MSc in Engineering physics, EPFL and LTH. Thesis: Measurement of esophagal tumor depth by Laser-Induced Fluorescence” (A.Châtelain)
1990-1993    PhD trainee, University of Basel, Switzerland
1993 PhD in Biophysics, University of Basel, Switzerland. Thesis: Metabolism of the human brain investigated by 1H-MRS (J. Seelig)
2007 Medical Physics Specialization, University “La Sapienza”, Rome, Italy. Thesis: Detection of epileptogenic foci by neuronal current MRI (B. Maraviglia)


POSITIONS HELD
1993-1994  Post-Doc, University of Basle, Switzerland
1994-1995  Post-Doc, Dep. Pharmacokinetics and metabolism, Pharmacia&Upjohn, Milan, Italy
1995-1999  Staff scientist, PET centre, University of Uppsala, Sweden
1999-2003  Staff scientist, Scientific Foundation Santa Lucia, Rome, Italy
2003-2010  Principal Investigator, Methods & Physics, Scientific Foundation Santa Lucia, Rome, Italy
2010-2012  Post-doctoral Fellow, Logothetis Group, MPI for Biological Cybernetics, Tübingen, Germany
2012-current:  Research Scientist/Project leader, Scheffler Group, MPI for Biological Cybernetics  and University hospital Tübingen, Germany

 

VARIA
Scientific publications
62articles in peer-reviewed journals, co-author of 5 book-chapters, h-index:22 ; i10: 39 (see: http://www.researcherid.com/rid/A-2134-2010 )
Teaching activities
University of Tübingen, Germany;  ECM continuing education in medicine: BHC - Rome, Fondazione Santa Lucia – Rome; Lecturer Universita’ Tor Vergata, Co-supervisor of three Msc, one Medical Physics Specialization thesis and three PhD theses.
Approved Grants
Italian Ministry of Health: RF00.97.; RF00.99; RF05.103; University Tübingen CIN/Pool 2012-11
Patents
US Patent 7430313: Methods using recurrence quantification analysis to analyze and generate images. Zbilut JP, Sirabella P, Bianciardi M, Hagberg G, Colosimo A,Giuliani A.
Brevetto RM 00 A 000160, 31.3.2000: Method and equipment for generation of quantitative T2* maps for production of Magnetic resonance images in real-time GE Hagberg, S Posse, JN Sanes.
Brevetto RM 03 U 000215, 23.12.2003: Magnetic resonance room for a 3T scanner compatible with research in functional Magnetic Resonance Imaging. GE Hagberg, E Macaluso.
Invited talks
Karolinska Institute - Stockholm, CNR - Genova, International School on Magnetic Resonance and Brain Function – Erice, Strasbourg, France, Radboud University, Nijmegen, The Netherlands; Workshops and congresses of AIFM and ISMRM
On-call referee
American journal of Neuroradiology, Journal of Neurochemistry, Magnetic Resonance in Medicine, Medical Physics, Nature Medicine, NMR in Biomedicine, Neuroimage, Neuroradiology, Plos oNE, Abstract review: ISMRM 2006, 2009, 2012-2014; Brain PET, 2007, 2009, 2011, 2014
Memberships, organization of Congresses and Workshops
Member of the Society for Magnetic Resonance in Medicine (ISMRM, since 2000), Italian Association for Medical Physics (AIFM, since 2005), European Society for Molecular Imaging (since 2012).  Board member organizing and scientific committees: Italian Federation of Radiation Research (FIRR) 2009, 2011; AIFM: 2011, 2013; ISMRM/AIFM/EFOMP: 2010

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Articles (16):

Pavlova MA, Erb M, Hagberg GE, Loureiro J, Sokolov AN and Scheffler K (July-2017) "Wrong Way Up": Temporal and Spatial Dynamics of the Networks for Body Motion Processing at 9.4 T Cerebral Cortex Epub ahead.
Loureiro JR, Hagberg GE, Ethofer T, Erb M, Bause J, Ehses P, Scheffler K and Himmelbach M (January-2017) Depth-dependence of visual signals in the human superior colliculus at 9.4 T Human Brain Mapping 38(1) 574–587.
Hagberg GE, Bause J, Ethofer T, Ehses P, Dresler T, Herbert C, Pohmann R, Shajan G, Fallgatter A, Pavlova MA and Scheffler K (January-2017) Whole brain MP2RAGE-based mapping of the longitudinal relaxation time at 9.4T NeuroImage 144(Part A) 203–216.
Groeschel S, Hagberg GE, Schultz T, Balla DZ, Klose U, Hauser T-K, Nägele T, Bieri O, Prasloski T, MacKay AL, Krägeloh-Mann I and Scheffler K (November-2016) Assessing White Matter Microstructure in Brain Regions with Different Myelin Architecture Using MRI PLoS ONE 11(11) 1-23.
Bisdas S, Chadzynski GL, Braun C, Schittenhelm J, Skardelly M, Hagberg GE, Ethofer T, Pohmann R, Shajan G, Engelmann J, Tabatabai G, Ziemann U, Ernemann U and Scheffler K (October-2016) MR spectroscopy for in vivo assessment of the oncometabolite 2-hydroxyglutarate and its effects on cellular metabolism in human brain gliomas at 9.4T Journal of Magnetic Resonance Imaging 44(4) 823–833.
Di Pietro G, Capuani S, Manenti G, Vinicola V, Fusco A, Baldi J, Scimeca M, Hagberg G, Bozzali M, Simonetti G and Tarantino U (March-2016) Bone Marrow Lipid Profiles from Peripheral Skeleton as Potential Biomarkers for Osteoporosis: A 1H-MR Spectroscopy Study Academic Radiology 23(3) 273–283.
Balla DZ, Sanchez-Panchuelo RM, Wharton SJ, Hagberg GE, Scheffler K, Francis ST and Bowtell R (October-2014) Functional quantitative susceptibility mapping (fQSM) NeuroImage 100 112–124.
Kadjane P, Platas-Iglesias C, Boehm-Sturm P, Truffault V, Hagberg GE, Hoehn M, Logothetis NK and Angelovski G (June-2014) Dual-Frequency Calcium-Responsive MRI Agents Chemistry: A European Journal 20(24) 7351–7362.
Angelovski G, Gottschalk S, Milošević M, Engelmann J, Hagberg GE, Kadjane P, Andjus P and Logothetis NK (May-2014) Investigation of a Calcium-Responsive Contrast Agent in Cellular Model Systems: Feasibility for Use as a Smart Molecular Probe in Functional MRI ACS Chemical Neuroscience 5(5) 360–369.
Hagberg G, Mamedov I, Power A, Beyerlein M, Merkle H, Kiselev VG, Dhingra K, Kubìček V, Angelovski G and Logothetis NK (January-2014) Diffusion properties of conventional and calcium-sensitive MRI contrast agents in the rat cerebral cortex Contrast Media & Molecular Imaging 9(1) 71–82.
Hagberg GE and Scheffler K (November-2013) Effect of r1 and r2 relaxivity of gadolinium-based contrast agents on the T1-weighted MR signal at increasing magnetic field strengths Contrast Media & Molecular Imaging 8(6) 456–465.
Placidi MP, Botta M, Kálmán FK, Hagberg GE, Baranyai Z, Krenzer A, Rogerson AK, Tóth I, Logothetis NK and Angelovski G (August-2013) Aryl-Phosphonate Lanthanide Complexes and Their Fluorinated Derivatives: Investigation of Their Unusual Relaxometric Behavior and Potential Application as Dual Frequency 1H/19F MRI Probes Chemistry - A European Journal 19(35) 11644–11660.
Pohmann R, Shajan G, Hoffmann J, Budde J, Hagberg G, Bieri O, Bisdas S, Ernemann U, Weigel M, Ehses P, Hennig J, Chadzynski G and Scheffler K (April-2013) Imaging and Spectroscopy at 9.4 Tesla: First Results on Patients and Volunteers MAGNETOM Flash 2013(2) 58-67.
Keliris A, Mamedov I, Hagberg GE, Logothetis NK, Scheffler K and Engelmann J (September-2012) A smart 19F and 1H MRI probe with self-immolative linker as a versatile tool for detection of enzymes Contrast Media & Molecular Imaging 7(5) 478–483.
Hagberg GE, Bianciardi M, Brainovich V, Cassara AN and Maraviglia B (February-2012) Phase stability in fMRI time series: Effect of noise regression, off-resonance correction and spatial filtering techniques NeuroImage 59(4) 3748–3761.
Hagberg G, Gefvert O, Bergström M, Wieselgren I-M, Lindström L, Wiesel F-A and Långström B (June-1998) N-[11C]Methylspiperone PET, in contrast to [11C]raclopride, fails to detect D2 receptor occupancy by an atypical neuroleptic Psychiatry Research: Neuroimaging 82(3) 147–160.

Conference papers (1):

Bianciardi M, Sirabella P, Hagberg G, Giuliani A, Zbilut JP and Colosimo A (September-2004) Analyzing Spatial Distributions of FMRI "Bold" Signals by RQA Variables, International Meeting Complexity in the living: a problem-oriented approach, Istituto Superiore di Sanità, Roma, Italy, 238-243, Series: Rapporti ISTISAN ; 05/20.

Contributions to books (2):

Garreffa G, Hagberg G and Indovina L: Physics of Hybrid Imaging, 3-12. In: PET-CT and PET-MRI in Neurology, (Ed) A. Ciarmiello, Springer, Cham, Switzerland, (2016).
Hagberg GE and Tuzzi E: Phase Variations in fMRI Time Series Analysis: Friend or Foe?, 81-113. In: Advanced Brain Neuroimaging Topics in Health and Disease: Methods and Applications, (Ed) T.D. Papageorgiou, InTech, Rijeka, Croatia, (May-2014).

Posters (25):

Cassara A, Neufeld E, Hagberg G, Guidon M, Scheffler K and Kuster N (April-27-2017): Peripheral Nerve Stimulation in MRI: Insights from a three level analysis and coupled EM-electrophysiological simulations in neuro-functionalized human models, 25th Annual Meeting and Exhibition of the International Society for Magnetic Resonance in Medicine (ISMRM 2017), Honolulu, HI, USA.
Hagberg G, Bause J, Ethofer T, Ehses P, Dresler T, Herbert C, Pohmann R, Shajan G, Fallgatter A, Pavlova M and Scheffler K (April-26-2017): Factors influencing the detection of age-dependent variations of cortical myelin by MP2RAGE at 9.4T, 25th Annual Meeting and Exhibition of the International Society for Magnetic Resonance in Medicine (ISMRM 2017), Honolulu, HI, USA.
Loureiro J, Hagberg G, Tuzzi E, Pohmann R, Schickardt Z, Himmelbach M, Ethofer T, Valverde M, Grodd W and Scheffler K (April-24-2017): Biological underpinnings of different MR contrasts in the human midbrain using quantitative structural MR imaging at 9.4T: Validation with 14T ex-vivo measurements and PLI, 25th Annual Meeting and Exhibition of the International Society for Magnetic Resonance in Medicine (ISMRM 2017), Honolulu, HI, USA.
Hagberg G, Keliris A, Srinivas M, Schulz H, Engelmann J, Schmehl J, Bantleon R, Mannheim J, Fuchs K, Pichler B, van der Linden A and Scheffler K (April-6-2017): 19F MRI-based detection of human mesenchymal stem cells (hMSC) labelled with fluorinated-PLGA nanoparticles, 12th Annual Meeting of the European Society for Molecular Imaging (EMIM 2017), Köln, Germany.
Pavlova M, Erb M, Hagberg G and Scheffler K (November-13-2016): Body motion presented upright and upside-down: Human ultra high field 9.4T fMRI, 46th Annual Meeting of the Society for Neuroscience (Neuroscience 2016), San Diego, CA, USA.
Pavlova MA, Erb M, Hagberg G, Sokolov A and Scheffler K (September-1-2016): Biological motion presented with upright and inverted display orientation: Human ultra high field 9.4 T fMRI, 39th European Conference on Visual Perception (ECVP 2016), Barcelona, Spain, Perception, 45(ECVP Abstract Supplement) 294-295.
Pavlova M, Erb M, Hagberg G, Loureiro J and Scheffler K (June-29-2016): Body motion presented upside-down: Human ultra-high field 9.4T fMRI, 22nd Annual Meeting of the Organization for Human Brain Mapping (OHBM 2016), Geneva, Switzerland.
Martin P, Hagberg G, Loureiro J, Bause J, Erb M, Lerche H, Scheffler K and Focke N (January-15-2016): Strukturelle Hochfeld-MRT-Bildgebung bei Epilepsie, Forschungskolloquium 2016 der Medizinischen Fakultät, Tübingen, Germany.
Loureiro JRA, Hagberg G, Ethofer T, Erb M, Scheffler K and Himmelbach M (October-19-2015): Depth-dependence of visual signals in the human superior colliculus: Comparison between 3T and 9.4T, 45th Annual Meeting of the Society for Neuroscience (Neuroscience 2015), Chicago, IL, USA.
Chadzynski G, Hagberg GE, Bause J, Shajan G, Bisdas S, Pohmann R, Engelmann J and Scheffler K (March-20-2015): Assessment of human brain tumors with proton magnetic resonance spectroscopic imaging at 9.4 Tesla, 10th Annual Meeting of the European Society for Molecular Imaging (EMIM 2015), Tübingen, Germany.
Hagberg GE, Keliris A, Srinivas M, Schulz H, Engelmann J, Schmehl J, Bantleon R and Scheffler K (March-19-2015): Characterization and MRI detection of 19F-PLGA labelled human mesenchymal stem cells, 10th Annual Meeting of the European Society for Molecular Imaging (EMIM 2015), Tübingen, Germany.
Chadzynski G, Bause J, Hagberg GE, Shajan G, Pohmann R, Engelmann J and Scheffler K (March-19-2015): Free induction decay proton magnetic resonance spectroscopic imaging in the healthy human brain at 9.4 Tesla: initial results, 10th Annual Meeting of the European Society for Molecular Imaging (EMIM 2015), Tübingen, Germany.
Keliris A, Engelmann J, Hagberg GE and Scheffler K (March-19-2015): Self-assembling peptide based system for detection of enzymatic activity by means of MRI, 10th Annual Meeting of the European Society for Molecular Imaging (EMIM 2015), Tübingen, Germany.
Sánchez-Castañeda C, Hagberg G, Squitieri F and Sabatini U (September-2014): Progressive Iron Accumulation In Huntington Disease Basal Ganglia: A Longitudinal Study, European Huntington’s Disease Network 8th Plenary Meeting, Barcelona, Spain, Journal of Neurology, Neurosurgery & Psychiatry, 85(Suppelment 1) A37-A38.
Hagberg GE, Martirosian P, Bause J, Shajan G, Klose U and Scheffler K (April-25-2013): Time-Of-Flight Angiography in Humans at 9.4T, 21st Annual Meeting and Exhibition of the International Society for Magnetic Resonance in Medicine (ISMRM 2013), Salt Lake City, UT, USA.
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Hagberg GE, Keliris A, Mamedov I, Placidi M, Merkle H, Logothetis NK and Scheffler K (April-23-2013): 19F-Lanthanide Complexes: T1 - and T2 - Dependent Signal Gain Using Gradient Echoes, 21st Annual Meeting and Exhibition of the International Society for Magnetic Resonance in Medicine (ISMRM 2013), Salt Lake City, UT, USA.
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Chadzynski G, Bisdas S, Hagberg G, Pohmann R, Shajan G, Kolb R, Klose U and Scheffler K (April-23-2013): First Proton CSI of a Human Brain Tumor at 9.4T, 21st Annual Meeting and Exhibition of the International Society for Magnetic Resonance in Medicine (ISMRM 2013), Salt Lake City, UT, USA.
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Hagberg GE, Mamedov I, Power A, Beyerlein M, Merckle H, Dhingra K, Kubicek V and Logothetis NK (November-2012): Diffusion of conventional and calcium sensitive MRI contrast agents in the rat cerebral cortex, Fifth Annual World Molecular Imaging Congress (WMIC 2012), Dublin, Ireland, Molecular Imaging and Biology, 14(Supplement 2) S1544.
Keliris A, Mamedov I, Hagberg GE, Logothetis NK, Scheffler K and Engelmann J (November-2012): Dual 1H/19F MR imaging approach for detection of enzyme activity, Fifth Annual World Molecular Imaging Congress (WMIC 2012), Dublin, Ireland, Molecular Imaging and Biology, 14(Supplement 2) S1235.
Hagberg GE, Mamedov I, Placidi M, Keliris A, Merkle H, Logothetis NK and Scheffler K (October-29-2012): 19F-Lanthanide complexes: T1- and T2-dependent signal gain using gradient echoes, ENCITE Symposium "Red hot MRI: In vivo 19F imaging", Nijmegen, The Netherlands.
Cassara AM, Körber R, Burghoff M, Hagberg G, Maraviglia B and Hartwig S (August-2012): Phase Imaging at Ultra-Low Field MRI, 18th International Conference on Biomagnetism (BIOMAG 2012), Paris, France.
Hagberg GE, Mamedov I, Power A, Beyerlein M, Merkle H, Angelovski G and Logothetis NK (May-9-2012): Diffusion in the extra-cellular space of the rat cerebral cortex probed by MRI and direct infusion of contrast agents, 20th Annual Meeting and Exhibition of the International Society for Magnetic Resonance in Medicine (ISMRM 2012), Melbourne, Australia.
Mamedov I, Engelmann J, Hagberg G, Eschenko O and Logothetis NK (May-8-2012): Development of multimodal imaging probes for neuroanatomical connectivity studies in vivo by means of MRI, 20th Annual Meeting and Exhibition of the International Society for Magnetic Resonance in Medicine (ISMRM 2012), Melbourne, Australia.
Hagberg GE, Balla D, Wiesner HM and Logothetis NK (May-9-2011): Small-Scale Phase & Magnitude Fluctuations in fMRI Time Series, 19th Annual Meeting and Exhibition of the International Society for Magnetic Resonance in Medicine (ISMRM 2011), Montréal, Canada.
Bianciardi M, Cerasa A and Hagberg G (June-2003): How experimental design and first-level filtering influence efficiency in second-level analysis of event-related fMRI data, 9th International Conference on Functional Mapping of the Human Brain (HBM 2003), New York, NY, USA, NeuroImage, 19(2 Supplement) e1503-e1504.

Talks (19):

Tuzzi E, Hagberg G, Balla D, Loureiro J, Neumann M, Laske C, Pohmann R and Valverde M (April-27-2017) Abstract Talk: In-vivo and ex-vivo R2* and Quantitative Susceptibility Mapping in Alzheimer’s Disease at Ultra-High Magnetic Field compared to Histology, 25th Annual Meeting and Exhibition of the International Society for Magnetic Resonance in Medicine (ISMRM 2017), Honolulu, HI, USA 677-678.
Martin P, Hagberg G, Loureiro J, Bause J, Lerche H, Focke N and Scheffler K (October-1-2016) Abstract Talk: Can 9.4 T MRI improve lesion visualization in epilepsy patients?, 33rd Annual Scientific Meeting of the European Society for Magnetic Resonance in Medicine and Biology (ESMRMB 2016), Wien, Austria, Magnetic Resonance Materials in Physics, Biology and Medicine, 29(Supplement 1) S347-S348.
Loureiro J, Hagberg G, Tuzzi E, Himmelbach M, Ethofer T, Grodd W, Martin P, Valverde M, Pohmann R and Scheffler K (October-1-2016) Abstract Talk: In-vivo ultra-high resolution structural imaging of the human superior colliculus at 9.4T: validation with ex vivo measurements at 9.4T and 14T, 33rd Annual Scientific Meeting of the European Society for Magnetic Resonance in Medicine and Biology (ESMRMB 2016), Wien, Austria, Magnetic Resonance Materials in Physics, Biology and Medicine, 29(Supplement 1) S376-S377.
Tuzzi E, Hagberg G, Balla DZ, Loureiro J, Neumann M, Laske C, Pohmann R, Valverde M and Scheffler K (September-30-2016) Abstract Talk: Ex-vivo and in-vivo ultra-High-Field R2* and QSM microimaging in Alzheimer’s disease, 33rd Annual Scientific Meeting of the European Society for Magnetic Resonance in Medicine and Biology (ESMRMB 2016), Wien, Austria, Magnetic Resonance Materials in Physics, Biology and Medicine, 29(Supplement 1) S144-S145.
Alves Loureiro J, Hagberg G, Ethofer T, Erb M, Scheffler K and Himmelbach M (May-11-2016) Abstract Talk: Depth-Dependence of Visual Signals in the Human Superior Colliculus at 9.4T: Comparison with 3T, 24th Annual Meeting and Exhibition of the International Society for Magnetic Resonance in Medicine (ISMRM 2016), Singapore(0635).
Hagberg GE, Bause J, Ethofer T, Ehses P, Dresler T, Shajan G, Pohmann R, Herbert C, Fallgatter A, Laske C, Pavlova M and Scheffler K (May-9-2016) Abstract Talk: Consistent detection of age-dependent variations of the longitudinal relaxation time in cortical brain regions investigated by MP2RAGE at 9.4T: influence of correcting for a non-uniform transmit field, 24th Annual Meeting and Exhibition of the International Society for Magnetic Resonance in Medicine (ISMRM 2016), Singapore(0059).
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Last updated: Monday, 22.05.2017