Dr. Simon Konstandin - Fraunhofer MEVIS

Publications

2024

Cetin A, Turhan G, Padrela B, Mahroo A, Konstandin S, Hoinkiss DC, Breutigam NJ, Keil V, Ayca ED, Özduman K, Eickel K, Mutsaerts H, Petr J, Günther M, Dincer A, Ozturk-Isik E (2024) Quantification of BBB Permeability in glioma using ASL with tissue specific T2 values. Proceedings of the ISMRM & ISMRT Annual Meeting & Exhibition. 3862

Cetin AI, Turhan G, Padrela BE, Mahroo A, Konstandin S, Honkiss DC, Breutigam N-J, Keil V, Barkhof F, Danyeli AE, Özduman K, Necmettin Pamir MN, Eickel K, Mutsaerts H-J, Petr J, Günther M, Dincer A, Ozturk-Isik E (2024) Tissue-specific T2 BBB-ASL in Meningiomas. Magn Reson Mater Phy 37(S1):1–781(P416)

Mahroo A, Konstandin S, Günther M (2024) Blood–Brain Barrier Permeability to Water Measured Using Multiple Echo Time Arterial Spin Labeling<scp>MRI</scp>in the Aging Human Brain. Magnetic Resonance Imaging 59(4):1269–1282

Nagtegaal M, Hoinkiss DC, Konstandin S, Smink J, Oeltzschner G, Günther M, van Osch M (2024) Advanced vendor-neutral MR sequences on Philips via gammaSTAR: pCASL and MRS-STEAM. Proceedings of the 40th Annual Scientific Meeting of the European Society of Magnetic Resonance in Medicine and Biology. Barcelona, Spain, 116

Padrela B, Mahroo A, Tee M, Sneve MH, Moyaert P, Geier O, Kuijer JPA, Beun S, Nordhøy W, Zhu YD, Buck MA, Hoinkiss DC, Konstandin S, Huber J, Wiersinga J, Rikken R, de Leeuw D, Grydeland H, Tippett L, Cawston EE, Ozturk-Isik E, Linn J, Brandt M, Tijms BM, van de Giessen EM, Muller M, Fjell A, Walhovd K, Bjørnerud A, Pålhaugen L, Selnes P, Clement P, Achten E, Anazodo U, Barkhof F, Hilal S, Fladby T, Eickel K, Morgan C, Thomas DL, Petr J, Günther M, Mutsaerts HJMM (2024) Developing blood-brain barrier arterial spin labelling as a non-invasive early biomarker of Alzheimer’s disease (DEBBIE-AD): a prospective observational multicohort study protocol. BMJ Open 14(3):e081635

Turhan G, Cetin AI, Padrela BE, Mahroo A, Konstandin S, Hoinkiss DC, Breutigam N-J, Keil V, Danyeli AE, Ozduman K, Eickel K, Mutsaerts H-J, Petr J, Gunther M, Dincer A, Ozturk Isik E (2024) The effect of BBB-ASL intravoxel transit time on perfusion and water exchange time modeling in gliomas. Magnetic Resonance Materials in Physics, Biology and Medicine. pp 1–781(LT53)

Turhan G, Cetin AI, Padrela BE, Mahroo A, Konstandin S, Hoinkiss DC, Breutigam N-J, Keil V, Danyeli AE, Ozduman K, Eickel K, Mutsaerts HJ, Petr J, Günther M, Dincer A, Ozturk-Isik E (2024) The effect of BBB-ASL intravoxel transit time on perfusion and water exchange time modeling in gliomas. Proceedings of the 40th Annual Scientific Meeting of the European Society of Magnetic Resonance in Medicine and Biology. Barcelona, Spain, 53

2023

Breutigam N-J, Hoinkiss DC, Konstandin S, Buck MA, Mahroo A, Eickel K, von Samson-Himmelstjerna F, Günther M (2023) Subject-specific timing adaption in time-encoded arterial spin labeling imaging. Magnetic Resonance Materials in Physics, Biology and Medicine

Mahroo A, Konstandin S, Hoinkiss DC, Hirsch J, Günther M (2023) Increased Blood-brain Barrier Permeability in Response to Caffeine Challenge. Proceedings of the ISMRM & ISMRT Annual Meeting & Exhibition. 2582

Nagtegaal M, Hoinkiss DC, Konstandin S, de Bresser J, Günther M, van Osch MJP (2023) Vendor-agnostic pulse programming on gammaSTAR: A traveling head experiment to test the Philips driver. Proceedings of the 39th Annual Scientific Meeting of the ESMRMB. LT54

Nagtegaal M, Konstandin S, Hoinkiss DC, Gross-Weege N, Schulz V, Günther M, van Osch T (2023) Vendor neutral pulse programming: Running gammaSTAR sequences on Philips Hardware. Proceedings of the ISMRM & ISMRT Annual Meeting & Exhibition. 2217

Padrela B, Sneve M, Zelhorst S, Tee M, Grydeland H, Mahroo A, Kuijer J, Walhovd K, Fjell A, Konstandin S, Eickel K, Barkhof F, Hilal S, Günther M, Mutsaerts H, Petr J (2023) Blood-brain barrier permeability changes over the lifespan. Proceedings of the ISMRM & ISMRT Annual Meeting & Exhibition. 1919

Padrela B, Tee M, Sneve M, Mahroo A, Geier O, Thomas D, Morgan C, Moyaert P, Ozturk E, Nordhøy W, Pålhaugen L, Linn J, Selnes P, Eickel K, Konstandin S, Kuijer J, Hoinkiss DC, Breutigam NJ, Buck MA, Achten R, Barkhof F, Hilal S, Fladby T, Anazodo U, Petr J, Mutsaerts H, Günther M (2023) DEveloping Blood-Brain barrier arterial spin labeling as a non-Invasive Early biomarker (DEBBIE). Proceedings of the ISMRM & ISMRT Annual Meeting & Exhibition. 367

Sommer L, Hoinkiss DC, Huber J, Konstandin S, Günther M (2023) Feasibility Study to Spatially Map the Filtration Function of the Kidneys with Multi-TE Arterial Spin Labeling. Proceedings of the ISMRM & ISMRT Annual Meeting & Exhibition. 2760

Turhan G, Cetin A, Mahroo A, Padrela B, Konstandin S, Hoinkiss DC, Breutigam NJ, Eickel K, Petr J, Mutsaerts H, Danyeli A, Ozduman K, Günther M, Dincer A, Ozturk-Isik E (2023) Perfusion and Time of Exchange Measurements Using BBB-ASL in Gliomas: The Initial Experience. Proceedings of the ISMRM & ISMRT Annual Meeting & Exhibition. 1757

2022

Buck MA, Konstandin S, Breutigam N-J, Günther M (2022) Exploration of Velocity-Selective Inversion Arterial Spin Labeling for Breast Imaging. Proceedings of the Joint Annual Meeting of the ISMRM and the ESMRMB. 1304

Buck MA, Konstandin S, Breutigam N-J, Günther M (2022) Towards vendor-independent Velocity-Selective Inversion Arterial Spin Labeling for Breast Imaging. Proceedings of the ISMRM Workshop on Perfusion MRI ‘From Head to Toe’

Hoinkiss DC, Konstandin S, Günther M (2022) Constraint-Based MRI Sequence Optimization in a Scanner-Independent MRI Framework. Proceedings of the Joint Annual Meeting of the ISMRM and the ESMRMB. 2770

Lippke M: S E, Philipp D, Konstandin S, Jenne J, Bertuch T, Günther M (2022) Investigation of a Digitally-Reconfigurable Metasurface for Magnetic Resonance Imaging. Proceedings of the 52nd European Microwave Conference (EuMC). IEEE, pp 668–671

Ssali T, Narciso L, Hicks J, Liu L, Jesso S, Richardson L, Günther M, Konstandin S, Eickel K, Prato F, Anazodo UC, Finger E, St Lawrence K (2022) Concordance of regional hypoperfusion by pCASL MRI and 15O-water PET in frontotemporal dementia: Is pCASL an efficacious alternative? NeuroImage: Clinical 33:102950

Ssali T, Anazodo UC, Narciso L, Liu L, Jesso S, Richardson L, Günther M, Konstandin S, Eickel K, Prato F, Finger E, St. Lawrence K (2022) Sensitivity of Arterial Spin Labeling for Characterization of Longitudinal Perfusion Changes in Frontotemporal Dementia and Related Disorders. NeuroImage: Clinical 35:102853

2021

Philipp D, Stoja E, Konstandin S, Wilke RN, Betancourt D, Bertuch T, Jenne J, Umathum R, Guenther M (2021) Smart metamaterials for 3 T MRI. Proceedings of the 29th Annual Meeting ISMRM. 1403

Stoja E, Konstandin S, Philipp D, Wilke RN, Betancourt D, Bertuch T, Jenne J, Umathum R, Guenther M (2021) Improving magnetic resonance imaging with smart and thin metasurfaces. Scientific Reports 11(1):16179

Wilke RN, Konstandin S, Hoinkiss DC, Uecker M, Guenther M (2021) Visual Remote Control of MRI Reconstruction Toolboxes. Proceedings of the 29th Annual Meeting of the ISMRM. 3770

2020

Betancourt D, Stoja E, Wilke RN, Philipp D, Jenne J, Umathum R, Konstandin S, Bertuch T, Guenther M (2020) A metamaterial-based cable mantle for shield current suppression in MRI systems. IEEE MTT-S International Microwave Biomedical Conference (IMBioC). pp 1–4

Cordes C, Konstandin S, Porter D, Günther M (2020) Portable and platform‐independent MR pulse sequence programs. Magn Reson Med 83(4):1277–1290

Hoinkiss DC, Cordes C, Konstandin S, Guenther M (2020) Event-Based Traversing of Hierarchical Sequences Allows Real-Time Execution and Arbitrary Looping in a Scanner-Independent MRI Framework. Proceedings of the 28th Annual Meeting of the ISMRM. 1043

Konstandin S, Cordes C, Guenther M (2020) Graphical sequence visualization and development in the dynamic platform-independent framework gammaSTAR: A first prototype. Proceedings of the 28th Annual Meeting ISMRM. 3644

Stoja E, Konstandin S, Wilke RN, Philipp D, Umathum R, Jenne J, Betancourt D, Bertuch T, Guenther M (2020) Design and characterization of a metasurface enhancement plate for 3T MRI. IEEE MTT-S International Microwave Biomedical Conference (IMBioC). pp 1–4

Stoja E, Philipp D, Betancourt D, Konstandin S, Wilke RN, Umathum R, Jenne J, Bertuch T, Guenther M (2020) Numerical investigation of a self-detuning signal enhancement metasurface for 3T MRI. XXXIIIrd General Assembly and Scientific Symposium of the International Union of Radio Science (GASS, URSI). pp K12–01

Wilke RN, Stoja E, Bekaan K, Philip D, Jenne J, Betancourt D, Konstandin S, Umathum R, Bertuch T, Guenther M (2020) Efficient 3D-characterization of metamaterial devices for enhanced magnetic resonance imaging. Proceedings of the 28th Annual Meeting ISMRM. 4079

2019

Archipovas S, Wilke RN, Konstandin S, Huber J, Hoinkiss DC, Cordes C, Breutigam NJ, Guenther M (2019) A prototype of a fully integrated environment for a collaborative work in MR sequence development for a reproducible research. Proceedings of the 27th Annual Meeting ISMRM. 0945

Cordes C, Konstandin S, Mensing D, Archipovas S, Wilke RW, Guenther M (2019) Configuring, viewing, exploring and exporting reproducible, vendor-independent MRI pulse sequences. Proceedings of the 27th Annual Meeting ISMRM. 4826

Eisele P, Konstandin S, Szabo K, Ebert A, Roßmanith C, Paschke N, Kerschensteiner M, Platten M, Schoenberg SO, Schad LR, Gass A (2019) Temporal evolution of acute multiple sclerosis lesions on serial sodium (23Na) MRI. Mult Scler Relat Disord 29:48–54

Hoinkiss DC, Cordes C, Konstandin S, Huber J, Wilke R, Günther M (2019) Real-Time Sequence Control for Prospective Motion Correction in a Dynamic, Platform-Independent MRI Framework. Proceedings of the 36th Annual Scientific Meeting of the ESMRMB. S14.02

Konstandin S, Cordes C, Guenther M (2019) Dynamic platform-independent MRI vs. manufacturer’s implementations. Proceedings of the 27th Annual Meeting ISMRM. 4841

Meyer MM, Haneder S, Konstandin S, Budjan J, Morelli JN, Schad LR, Kerl HU, Schoenberg SO, Kabbasch C (2019) Repeatability and reproducibility of cerebral 23Na imaging in healthy subjects. BMC Med Imaging 19(1):26

Meyer MM, Schmidt A, Benrath J, Konstandin S, Pilz LR, Harrington MG, Budjan J, Meyer M, Schad LR, Schoenberg SO, Haneder S (2019) Cerebral sodium (23Na) magnetic resonance imaging in patients with migraine – A case-control study. Eur Radiol 29(12):7055–7062

2017

Eisele P, Konstandin S, Szabo K, Ong M, Zoellner F Schad L R, Schoenberg SO, Gass A (2017) Sodium MRI of T1 high signal intensity in the dentate nucleus due to gadolinium deposition in multiple sclerosis. J Neuroimaging 27(4):372–375

Hu R, Malzacher M, Davids M, Neubauer A, Konstandin S, Schad LR (2017) Spatial resolution analysis comparing density-adapted and conventional projection reconstruction in chlorine-35 MRI at 9.4 T. Proceedings of the International Society of Magnetic Resonance in Medicine. 5219

Hu R, Neubauer A, Malzacher M, Konstandin S, Schad LR (2017) Density-adapted k-space sampling technique for fast relaxing chlorine-35 nuclei at 9.4 T. Proceedings of the International Society of Magnetic Resonance in Medicine. 2949

Konstandin S, Guenther M (2017) Implementation and optimization of an automatic k-space trajectory correction for ultrashort echo time imaging. Proceedings of the International Society of Magnetic Resonance in Medicine. 4008

Ong M, Schmidt A, Benrath J, Konstandin S, Schad LR, Schoenberg SO, Haneder S (2017) Cerebral sodium (23Na) magnetic resonance imaging in patients with migraine vs healthy controls. Annual Meeting of the Radiological Society of North America. pp SSG11–03

Ong M, Schmidt A, Konstandin S, Benrath J, Meyer M, Schad LR, Schoenberg SO, Haneder S (2017) Cerebral sodium (23Na) magnetic resonance imaging in patients with migraine. Proceedings of the International Society of Magnetic Resonance in Medicine. 1106

2016

Budjan J, Benck U, Lammert A, Ong MM, Mircheva M, Diehl S, Konstandin S, Schad LR, Kraemer BK, Schoenberg SO, Haneder S (2016) Renal denervation in patients with resistant hypertension-assessment by 3T renal 23Na-MRI: Preliminary results. In Vivo 30(5):657–662

Budjan J, Konstandin S, Haneder S, Schad L, Jahnke A, Jahnke L, Schoenberg SO, Wenz F, Lohr F, Boda-Heggemann J (2016) A prospective assessment of radiotherapy (RT)-induced early functional renal changes by means of 23Na-Magnetic Resonance Imaging (MRI). Jahrestagung der Deutschen Gesellschaft für Radioonkologie. pp Po7–8

Eisele P, Konstandin S, Griebe M, Szabo K, Wolf ME, Alonso A, Ebert A, Serwane J, Rossmanith C, Hennerici MG, Schad LR, Gass A (2016) Heterogeneity of acute multiple sclerosis lesions on sodium (23Na) MRI. Mult Scler 22(8):1040–1047

Eisele P, Konstandin S, Griebe M, Szabo K, Wolf ME, Alonso A, Schwarzbach CJ, Ebert A, Roßmanith C, Weiß C, Ong M, Schoenberg S, Schad LR, Gass A (2016) Investigation of the value of sodium (23Na) MRI in multiple sclerosis: focus on microscopic tissue changes. Kongress der Deutschen Gesellschaft für Neurologie. 125

Haneder S, Konstandin S (2016) [Functional MRI 2.0: 23Na and CEST imaging] (Review). Radiologe 56(2):159–169

Konstandin S, Guenther M (2016) A beating heart simulation for sequence optimization of sodium MRI. Proceedings of the International Society of Magnetic Resonance in Medicine. 3943

Lommen J, Konstandin S, Kraemer P, Schad LR (2016) Enhancing the quantification of tissue sodium content by MRI – time-efficient sodium B1 mapping at clinical field strengths. NMR Biomed 29(2):129–136

Malzacher M, Kalayciyan R, Konstandin S, Haneder S, Schad LR (2016) Sodium-23 MRI of whole spine at 3 Tesla using a 5-channel receive-only phased-array and a whole-body transmit resonator. Z Med Phys 26(1):95–100

Ong M, Schmidt A, Konstandin S, Benrath J, Eisele P, Hausmann D, Schad LR S SO, Haneder S (2016) Cerebral sodium (23Na) imaging in patients with migraine. Annual Meeting of the Radiological Society of North America. pp SSC11–07

Zoellner FG, Konstandin S, Lommen J, Budjan J, Schoenberg SO, Schad LR, Haneder S (2016) Quantitative sodium MRI of kidney (Review). NMR Biomed 29(2):197–205

2015

Haneder S, Budjan JM, Schoenberg SO, Konstandin S, Schad LR, Hofheinz RD, Gramlich V, Wenz F, Lohr F, Boda-Heggemann J (2015) Dose-dependent changes in renal 1H-/23Na MRI after adjuvant radiochemotherapy for gastric cancer. Strahlenther Onkol 191(4):356–364

Haneder S, Giordano FA, Konstandin S, Brehmer S, Buesing KA, Schmiedek P, Schad LR, Wenz F, Schoenberg SO, Ong MM (2015) 23Na-MRI of recurrent glioblastoma multiforme after intraoperative radiotherapy: technical note. Neuroradiology 57(3):321–326

Haneder S, Konstandin S, Budjan J, Schad LR, Ong M, Schoenberg SO, Kerl HU (2015) Reproduzierbarkeit cerebraler 23Na-Bildgebung in gesunden Probanden. Jahrestagung der Deutschen Gesellschaft für Neuroradiologie. 0151

Hu R, Konstandin S, Schad LR (2015) Fast sodium MRI of the human brain using a balanced steady-state free precession sequence. Proceedings of the International Society of Magnetic Resonance in Medicine. 2372

Konstandin S, Guenther M (2015) SNR-efficient anisotropic 3D ultra-short echo time sequence for sodium MRI with retrospective gating. Proceedings of the International Society of Magnetic Resonance in Medicine. 2435

Konstandin S, Kraemer P, Guenther M, Schad LR (2015) Sodium magnetic resonance imaging using ultra-short echo time sequences with anisotropic resolution and uniform k-space sampling. Magn Reson Imaging 33(3):319–327

Lommen J, Konstandin S, Schad LR (2015) Simultaneous B1 mapping and tissue sodium content quantification by MRI at 3 Tesla. Proceedings of the International Society of Magnetic Resonance in Medicine. 4628

Neumaier-Probst E, Konstandin S, Ssozi J, Groden C, Hennerici M, Schad LR, Fatar M (2015) A double-tuned 1H/23Na resonator allows 1H-guided 23Na-MRI in ischemic stroke patients in one session. Int J Stroke Suppl A 100:56–61

2014

Haneder S, Michaely HJ, Konstandin S, Schad LR, Morelli JN, Kraemer BK, Schoenberg SO, Lammert A (2014) 3T Renal 23Na-MRI: effects of desmopressin in patients with central diabetes insipidus. Magn Reson Mater Phy 27(1):47–52

Haneder S, Ong M, Budjan J, Schmidt R, Konstandin S, Morelli JN, Schad LR, Schoenberg SO, Kerl HU (2014) 23Na – MR of the human lumbar vertebral discs: in vivo measurements at 3.0T in healthy volunteers and patients with low back pain. Spine J 14(7):1343–1350

Konstandin S, Nagel AM (2014) Measurement techniques for magnetic resonance imaging of fast relaxing nuclei (Review). Magn Reson Mater Phy 27(1):5–19

Konstandin S, Schad LR (2014) 30 years of sodium/X-nuclei magnetic resonance imaging (Editorial). Magnetic Resonance Materials in Physics, Biology and Medicine. pp 1–4

Konstandin S, Kraemer P, Schad LR (2014) Projection distribution of 3D UTE sequences for sodium MRI with anisotropic resolution and uniform sampling. Proceedings of the International Society of Magnetic Resonance in Medicine. 2929

Lommen J, Konstandin S, Kraemer P, Schad LR (2014) Evaluation of radio-frequency field mapping methods for quantitative sodium MRI at 3 Tesla. Proceedings of the International Society of Magnetic Resonance in Medicine. 2928

Maarouf A, Audoin B, Konstandin S, Rico A, Soulier E, Reuter F, LeTroter A, Confort-Gouny S, Cozzone PJ, Guye M, Schad LR, Pelletier J, Ranjeva JP, Zaaraoui W (2014) Topography of brain sodium accumulation in progressive multiple sclerosis. Magn Reson Mater Phy 27(1):53–62

Ong M, Konstandin S, Budjan J, Schad LR, Schoenberg SO, Haneder S, Kerl HU (2014) Reproduzierbarkeit cerebraler 23Na-Bildgebung an gesunden Probanden – eine Pilotstudie. Fortschr Röntgen. VO304_5

Weingaertner S, Wetterling F, Konstandin S, Fatar M, Neumaier-Probst E, Schad LR (2014) Scan time reduction in 23Na-magnetic resonance imaging using the chemical shift imaging sequence: Evaluation of an iterative reconstruction method. Z Med Phys 25(3):275–286

2013

Haneder S, Kettnaker P, Konstandin S, Morelli JN, Schad LR, Schoenberg SO, Michaely HJ (2013) Quantitative in vivo 23Na MR imaging of the healthy human kidney: determination of physiological ranges at 3.0T with comparison to DWI and BOLD. Magn Reson Mater Phy 26(6):501–509

Haneder S, Konstandin S, Morelli JN, Schad LR, Schoenberg SO, Michaely HJ (2013) Assessment of the renal corticomedullary (23)Na gradient using isotropic data sets. Acad Radiol 20(4):407–413

Haneder S, Schoenberg SO, Konstandin S, Schad LR (2013) Sodium (23Na)-imaging as therapy monitoring in oncology – future prospects. MAGNETOM Flash (Siemens) 2:72–77

Konstandin S, Nagel AM (2013) Performance of sampling density-weighted and postfiltered density-adapted projection reconstruction in sodium magnetic resonance imaging. Magn Reson Med 69(2):495–502

Konstandin S, Schad LR (2013) Two-dimensional radial sodium heart MRI using variable-rate selective excitation and retrospective electrocardiogram gating with golden angle increments. Magn Reson Med 70(3):791–799

Malzacher M, Kalayciyan R, Konstandin S, Haneder S, Schad LR (2013) A double resonant (23Na/1H) RF resonator system for human abdominal MRI at 3T. Proceedings of the International Society of Magnetic Resonance in Medicine German Chapter. pp 89–90

Neumaier-Probst E, Konstandin S, Ssozi J, Groden C, Hennerici M, Schad LR, Fatar M (2013) Quantitative und qualitative 23Na-MR-Bildgebung des Gehirns in Patienten mit Schlaganfall bei 3 T. Jahrestagung der Deutschen Gesellschaft für Neuroradiologie. 0211

2012

Decker CM, Zoellner FG, Konstandin S, Schad LR (2012) Comparing anisotropic diffusion filters for the enhancement of sodium magnetic resonance images. Magn Reson Imaging 30(8):1192–1200

Haneder S, Boda-Heggemann J, Konstandin S, Schad LR, Wenz F, Lohr F, Schoenberg SO, Michaely HJ (2012) Assessment of renal function after conformal radiotherapy and intensity modulated radiotherapy by functional 1H-MR-imaging and 23Na-MR-imaging. Proceedings of the International Society of Magnetic Resonance in Medicine. 1309

Haneder S, Konstandin S, Kettnaker P, Schad LR, Schoenberg SO, Michaely HJ (2012) Quantitative 23Na, and DW-imaging of the healthy human kidney for establishing norm values for the 23Na, concentrations at 3.0T. European Congress of Radiology (ECR). B-0663

Haneder S, Konstandin S, Morelli J, Schad LR, Schoenberg SO, Michaely HJ (2012) Introduction and evaluation of different approaches for the (semi-)quantitative assessment of renal sodium content with 23Na MR imaging. Proceedings of the International Society of Magnetic Resonance in Medicine. 1303

Haneder S, Michaely HJ, Schoenberg SO, Konstandin S, Schad LR, Siebenlist K, Wertz H, Wenz F, Lohr F, Boda-Heggemann J (2012) Assessment of renal function after conformal radiotherapy and intensity-modulated radiotherapy by functional 1H-MRI and 23Na-MRI. Strahlenther Onkol 188(12):1146–1154

Hausmann D, Konstandin S, Wetterling F, Haneder S, Nagel AM, Dinter DJ, Schoenberg SO, Zoellner FG, Schad LR (2012) Apparent diffusion coefficient and sodium concentration measurements in human prostate tissue via hydrogen-1 and sodium-23 MRI in a clinical setting at 3T. Invest Radiol 47(12):677–682

Hausmann D, Konstandin S, Zoellner FG, Haneder S, Wetterling F, Nagel AM, Dinter D, Schoenberg SO, Schad LR (2012) Sodium imaging of the prostate at 3T. Proceedings of the International Society of Magnetic Resonance in Medicine. 83

Henzler T, Konstandin S, Schmid-Bindert G, Apfaltrer P, Haneder S, Wenz F, Schad L, Manegold C, Schoenberg SO, Fink C (2012) Imaging of tumor viability in lung cancer: initial results using 23Na-MRI. RöFo Fortschr Röntgenstr 184(4):340–344

Konstandin S, Schad L R (2012) 2D radial sodium MRI using VERSE. Proceedings of the International Society of Magnetic Resonance in Medicine. 721

Konstandin S, Schad LR (2012) 2D radial sodium heart MRI: Prospective vs. retrospective ECG-gating using Golden angle increments. Proceedings of the International Society of Magnetic Resonance in Medicine. 1696

Wetterling F, Corteville DM, Kalayciyan R, Rennings A, Konstandin S, Nagel AM, Stark H, Schad LR (2012) Whole body sodium MRI at 3T using an asymmetric birdcage resonator and short echo time sequence: first images of a male volunteer. Phys Med Biol 57(14):4555–4567

Zaaraoui W, Konstandin S, Audoin B, Nagel AM, Rico A, Malikova I, Soulier E, Viout P, Confort-Gouny S, Cozzone PJ, Pelletier J, Schad LR, Ranjeva JP (2012) Distribution of brain sodium accumulation correlates with disability in multiple sclerosis: a cross-sectional 23Na MR imaging study. Radiology 264(3):859–867

Zaaraoui W, Konstandin S, Audoin B, Nagel AM, Rico A, Malikova I, Soulier E, Viout P, Confort-Gouny S, Cozzone P, Pelletier J, Schad LR, Ranjeva JP (2012) Brain sodium accumulation and spreading correlate with disability in multiple sclerosis. Proceedings of the International Society of Magnetic Resonance in Medicine. 484

Zoellner FG, Decker C, Konstandin S, Schad LR (2012) Comparing anisotropic diffusion filters: Enhancement of 23Na MRI of human kidney. Proceedings of the International Society of Magnetic Resonance in Medicine. 143

2011

Boda-Heggemann J, Haneder S, Konstandin S, Schad LR, Wenz F, Michaely HJ, Lohr F (2011) Assessment of 3D-conformal radiotherapy (3DCRT) and image-guided intensity modulated radiotherapy (IG-IMRT) induced renal damage by means of functional MR-imaging and 23Na-MR-imaging. Annual Meeting of the American Society for Radiation Oncology (ASTRO). 2238

Decker C, Zoellner FG, Konstandin S, Schad LR (2011) Anisotropic diffusion filter for enhancement of 23Na imaging of the kidney at 3T – initial results. International Symposium on Image and Signal Processing and Analysis (ISPA). pp 762–766

Haneder S, Konstandin S, Attenberger U, Budjan J, Schoenberg SO, Michaely HJ (2011) Quantitative 23Na-, BOLD- und DWI-Bildgebung der gesunden menschlichen Niere zur Etablierung von Normwerten bei 3,0T. Fortschr Röntgen. VO322_4

Haneder S, Konstandin S, Morelli JN, Nagel AM, Zoellner FG, Schad LR, Schoenberg SO, Michaely HJ (2011) Quantitative and qualitative (23)Na MR imaging of the human kidneys at 3 T: before and after a water load. Radiology 260(3):857–865

Hausmann D, Konstandin S, Haneder S, Zoellner FG, Wetterling F, Schoenberg SO, Dinter D, Schad LR (2011) Quantitative and qualitative sodium imaging of the prostate at 3T. Proceedings of the International Society of Magnetic Resonance in Medicine. 1050

Heiler PM, Ansar S, Grudzenski S, Wetterling F, Konstandin S, Meairs S, Fatar M, Schad LR (2011) Chemical shift sodium imaging of the rat brain during TmDOTP5- Infusion. Proceedings of the International Society of Magnetic Resonance in Medicine. 1491

Heiler PM, Langhauser FL, Wetterling F, Ansar S, Grudzenski S, Konstandin S, Fatar M, Meairs S, Schad LR (2011) Chemical shift sodium imaging in a mouse model of thromboembolic stroke at 9.4 T. J Magn Reson Imaging 34(4):935–940

Heiler PM, Rieger B, Kraemer P, Konstandin S, Schad LR (2011) Optimized chemical shift imaging for sodium MRI of the human brain. Proceedings of the International Society of Magnetic Resonance in Medicine. 2800

Heiler PM, Vollmar F, Wetterling F, Ansar S, Konstandin S, Fatar M, Schad LR (2011) Chemical shift sodium imaging in a mouse model of thromboembolic stroke at 9.4 Tesla. Proceedings of the International Society of Magnetic Resonance in Medicine. 2143

Kalayciyan R, Wetterling F, Konstandin S, Runge T, Benck U, Haneder S, Michaely HJ, Schad LR (2011) Feasibility of renal sodium MRI in an acute tubular necrosis model at 3 Tesla. Proceedings of the European Society of Magnetic Resonance in Medicine. 234

Konstandin S, Heiler PM, Scharf J, Schad LR (2011) Comparison of selective arterial spin labeling using 1D and 2D tagging RF pulses. Z Med Phys 21(1):26–32

Konstandin S, Nagel AM, Heiler PM, Schad LR (2011) Filter implementation into a 2D radial trajectory for sodium MRI. Proceedings of the International Society of Magnetic Resonance in Medicine. 2814

Konstandin S, Nagel AM, Heiler PM, Schad LR (2011) Two-dimensional radial acquisition technique with density adaption in sodium MRI. Magn Reson Med 65(4):1090–1096

Kraemer P, Konstandin S, Heilmann M, Schad LR (2011) 3D radial twisted projection imaging for DCE-MRI with variable flip angles. Proceedings of the International Society of Magnetic Resonance in Medicine. 2055

Weingaertner S, Wetterling F, Konstandin S, Schad LR (2011) 23Na-constrained reconstruction with 1H a-priori information. Proceedings of the European Society of Magnetic Resonance in Medicine. 118

Wetterling F, Rennings A, Kalayciyan R, Corteville D, Konstandin S, Schad LR (2011) A dual resonator system for whole-body sodium-MRI at 3T. Proceedings of the International Society of Magnetic Resonance in Medicine. 471

Zaaraoui W, Konstandin S, Nagel AM, Soulier E, Viout P, Confort-Gouny S, Audoin B, Cozzone PJ, Pelletier J, Schad LR, Ranjeva JP (2011) In vivo 23Na MRI to assess the differences in total sodium concentration of brain compartments in patients with multiple sclerosis. Proceedings of the European Society of Magnetic Resonance in Medicine. 185

Zaaraoui W, Konstandin S, Nagel AM, Wichmann T, Berthel D, Confort-Gouny S, Cozzone P, Audoin B, Pelletier J, Schad LR, Ranjeva JP (2011) Total sodium brain concentrations in compartments of patient with Multiple Sclerosis. A preliminary in vivo 23Na MRI study. Proceedings of the International Society of Magnetic Resonance in Medicine. 1496

Zoellner FG, Best H, Konstandin S, Haneder S, Schoenberg SO, Michaely HJ, Schad LR (2011) 23Na MRI of the human kidney at 3T: Improving image quality by different image filters. Proceedings of the International Society of Magnetic Resonance in Medicine. 827

2010

Haneder S, Konstandin S, Schad LR, Schoenberg SO, Michaely HJ (2010) Qualitative und quantitative renale 23Natrium-Bildgebung bei 3T: Initiale Ergebnisse. Fortschr Röntgen. VO407_2

Haneder S, Konstandin S, Zoellner FG, Nagel AM, Schad LR, Schoenberg SO, Michaely HJ (2010) Quantitative and qualitative renal sodium-imaging at 3T. Proceedings of the International Society of Magnetic Resonance in Medicine. 994

Haneder S, Konstandin S, Zoellner FG, Schad LR, Schoenberg SO, Michaely HJ (2010) Quantitative and qualitative 23Na: Imaging of the human kidneys before and after water load at 3.0 Tesla. Annual Meeting of the Radiological Society of North America. LL-GUS-WE4B

Konstandin S, Heiler PM, Scharf J, Schad LR (2010) Selective arterial spin labeling after extra-intracranial bypass surgery. Proceedings of the International Society of Magnetic Resonance in Medicine. 4068

Konstandin S, Nagel AM, Heiler PM, Schad LR (2010) 2D radial acquisition technique with density adaption in sodium MRI. Proceedings of the International Society of Magnetic Resonance in Medicine. 4965

Wetterling F, Kisubi J, Haardt E, Konstandin S, Nagel AM, Fatar M, Neumaier-Probst E, Schad LR (2010) Quantitative 23Na-MRI: From pre-clinical to clinical practice. Annual Meeting of the German Association for Medical Physics (DGMP). pp 209–210

Zapp J, Konstandin S, Schad LR (2010) Proton MRI of human lung using 2D radial acquisition at 1.5 T and 3.0 T. Proceedings of the International Society of Magnetic Resonance in Medicine. 2510

2009

Heiler PM, Konstandin S, Schad LR (2009) Inner volume BOLD-fMRI at ultra-high spatial resolution. Proceedings of the International Society of Magnetic Resonance in Medicine. 1551

Konstandin S, Heiler PM, Schad LR (2009) 2D RF versus slice selective RF tagging pulses in brain ASL. Proceedings of the International Society of Magnetic Resonance in Medicine. 3655

2008

Konstandin S, Heiler PM, Schad LR (2008) Arterial Spin Labeling MR-Perfusionsbildgebung mittels 2D-selektiven Anregungspulsen. Annual Meeting of the German Association for Medical Physics (DGMP)