Works by Helm, Lothar

Results: 44

In-Vivo Detection and Tracking of T Cells in Various Organs in a Melanoma Tumor Model by 19F-Fluorine MRS/MRI.

Published in:

PLoS ONE, 2016, v. 11, n. 10, p. 1, doi. 10.1371/journal.pone.0164557

By:

Gonzales, Christine;
Yoshihara, Hikari A. I.;
Dilek, Nahzli;
Leignadier, Julie;
Irving, Melita;
Mieville, Pascal;
Helm, Lothar;
Michielin, Olivier;
Schwitter, Juerg

Publication type:

Article

New Bisaqua Picolinate-Based Gadolinium Complexes as MRI Contrast Agents with Substantial High-Field Relaxivities.

Published in:

European Journal of Inorganic Chemistry, 2012, v. 2012, n. 12, p. 2049, doi. 10.1002/ejic.201101162

By:

Nonat, Aline M.;
Gateau, Christelle;
Fries, Pascal H.;
Helm, Lothar;
Mazzanti, Marinella

Publication type:

Article

Hyperfine Coupling Constants on Inner-Sphere Water Molecules of GdIII-Based MRI Contrast Agents.

Published in:

ChemPhysChem, 2012, v. 13, n. 16, p. 3640, doi. 10.1002/cphc.201200417

By:

Esteban-Gómez, David;
de Blas, Andrés;
Rodríguez-Blas, Teresa;
Helm, Lothar;
Platas-Iglesias, Carlos

Publication type:

Article

High pressure cyanide exchange study on a square-planar tetracyanometalate complex of Pt(II).

Published in:

High Pressure Research, 2000, v. 18, n. 1-6, p. 319, doi. 10.1080/08957950008200986

By:

Monlien, Florence J.;
Abou-Hamdan, Amira;
Helm, Lothar;
Merbach, André E.

Publication type:

Article

High-pressure NMR study of water exchange on magnetic resonance imaging contrast agents.

Published in:

High Pressure Research, 1994, v. 13, n. 1-3, p. 109, doi. 10.1080/08957959408200270

By:

Helm, Lothar;
Powell, D. Hugh;
Merbach, Andre E.;
Micskei, Karoly;
Brücher, Ernö

Publication type:

Article

The first high-pressure high-resolution NMR probe for a normal bore cryomagnet.

Published in:

High Pressure Research, 1994, v. 12, n. 4-6, p. 285, doi. 10.1080/08957959408201671

By:

Moullet, Bertrand;
Frey, Urban;
Helm, Lothar;
Tschanz, Rene;
Ith, Roger;
Merbach, Andre E.

Publication type:

Article

High-pressure, high-resolution NMR probe working at 400 MHZ.

Published in:

High Pressure Research, 1990, v. 2, n. 4, p. 237, doi. 10.1080/08957959008203174

By:

Frey, Urban;
Helm, Lothar;
Merbach, Andréa E.

Publication type:

Article

MD Simulations of Acyclic and Macrocyclic Gd3+-Based MRI Contrast Agents: Influence of the Internal Mobility on Water Proton Relaxivity ( MD=molecular dynamics, MRI=magnetic resonance imaging. ).

Published in:

Chemistry - A European Journal, 2003, v. 9, n. 22, p. 5468, doi. 10.1002/chem.200305175

By:

Fabrice Yerly;
Alain Borel;
Lothar Helm;
André E. Merbach

Publication type:

Article

Cover Picture.

Published in:

Chemistry - A European Journal, 2002, v. 8, n. 5, p. 995, doi. 10.1002/1521-3765(20020301)8:5<995::AID-CHEM995>3.0.CO;2-J

By:

Yerly, Fabrice;
Hardcastle, Kenneth I.;
Helm, Lothar;
Aime, Silvio;
Botta, Mauro;
Merbach, André E.

Publication type:

Article

Molecular Dynamics Simulation of [Gd(egta)(H2O)]− in Aqueous Solution: Internal Motions of the Poly(amino carboxylate) and Water Ligands, and Rotational Correlation Times.

Published in:

Chemistry - A European Journal, 2002, v. 8, n. 5, p. 1031, doi. 10.1002/1521-3765(20020301)8:5<1031::AID-CHEM1031>3.0.CO;2-9

By:

Yerly, Fabrice;
Hardcastle, Kenneth I.;
Helm, Lothar;
Aime, Silvio;
Botta, Mauro;
Merbach, André E.

Publication type:

Article

Molecular Dynamics Simulations of MRI-Relevant GdIII Chelates: Direct Access to Outer-Sphere Relaxivity.

Published in:

Chemistry - A European Journal, 2001, v. 7, n. 3, p. 600, doi. 10.1002/1521-3765(20010202)7:3<600::AID-CHEM600>3.0.CO;2-H

By:

Borel, Alain;
Helm, Lothar;
Merbach, André E.

Publication type:

Article

Gd(DTPA-bisamide)alkyl Copolymers: A Hint for the Formation of MRI Contrast Agents with Very High Relaxivity.

Published in:

Chemistry - A European Journal, 1999, v. 5, n. 4, p. 1202, doi. 10.1002/(SICI)1521-3765(19990401)5:4<1202::AID-CHEM1202>3.0.CO;2-Y

By:

Tóth, Éva;
Helm, Lothar;
Kellar, Kenneth E.;
Merbach, André E.

Publication type:

Article

The Role of Water Exchange in Attaining Maximum Relaxivities for Dendrimeric MRI Contrast Agents.

Published in:

Chemistry - A European Journal, 1996, v. 2, n. 12, p. 1607, doi. 10.1002/chem.19960021220

By:

Tóth, Éva;
Pubanz, Dirk;
Vauthey, Sylvain;
Helm, Lothar;
Merbach, André E.

Publication type:

Article

Mechanisms of Water Exchange between Lanthanide(III) Aqua Ions [Ln(H2O) n]3+ and bulk water: A Molecular Dynamics Simulation Approach Including High-Pressure Effects.

Published in:

Chemistry - A European Journal, 1996, v. 2, n. 3, p. 285, doi. 10.1002/chem.19960020309

By:

Kowall, Thomas;
Foglia, François;
Helm, Lothar;
Merbach, André E.

Publication type:

Article

Gd(III)-EPTPAC16, a new self-assembling potential liver MRI contrast agent: in vitro characterization and in vivo animal imaging studies.

Published in:

NMR in Biomedicine, 2008, v. 21, n. 4, p. 322, doi. 10.1002/nbm.1194

By:

Torres, Suzana;
Prata, Maria I. M.;
Santos, Ana C.;
André, João P.;
Martins, José A.;
Helm, Lothar;
Tóth, Éva;
García-Martín, Maria L.;
Rodrigues, Tiago B.;
López-Larrubia, Pilar;
Cerdán, Sebastián;
Geraldes, Carlos F. G. C.

Publication type:

Article

Carbazole as Linker for Dinuclear Gadolinium-Based MRI Contrast Agents.

Published in:

European Journal of Inorganic Chemistry, 2017, v. 2017, n. 45, p. 5403, doi. 10.1002/ejic.201700847

By:

Mousavi, Bibimaryam;
Chauvin, Anne‐Sophie;
Moriggi, Loïck;
Helm, Lothar

Publication type:

Article

PEGylated DOTA-AHA-Based GdIII Chelates: A Relaxometric Study (Eur. J. Inorg. Chem. 29/2015).

Published in:

European Journal of Inorganic Chemistry, 2015, v. 2015, n. 29, p. n/a, doi. 10.1002/ejic.201590116

By:

Fontes, André;
Karimi, Shima;
Helm, Lothar;
Ferreira, Paula M.;
André, João P.

Publication type:

Article

PEGylated DOTA-AHA-Based GdIII Chelates: A Relaxometric Study.

Published in:

2015

By:

Fontes, André;
Karimi, Shima;
Helm, Lothar;
Ferreira, Paula M.;
André, João P.

Publication type:

Other

PEGylated DOTA-AHA-Based GdIII Chelates: A Relaxometric Study.

Published in:

European Journal of Inorganic Chemistry, 2015, v. 2015, n. 29, p. 4798, doi. 10.1002/ejic.201500688

By:

Fontes, André;
Karimi, Shima;
Helm, Lothar;
Ferreira, Paula M.;
André, João P.

Publication type:

Article

Dinuclear DOTA-Based GdIII Chelates - Revisiting a Straightforward Strategy for Relaxivity Improvement.

Published in:

European Journal of Inorganic Chemistry, 2015, v. 2015, n. 9, p. 1579, doi. 10.1002/ejic.201403159

By:

Fontes, André;
Karimi, Shima;
Helm, Lothar;
Yulikov, Maxim;
Ferreira, Paula M.;
André, João P.

Publication type:

Article

Hyperfine interactions in aqueous solution of Cr3+: an ab initio molecular dynamics study.

Published in:

Theoretical Chemistry Accounts: Theory, Computation, & Modeling, 2006, v. 115, n. 2/3, p. 190, doi. 10.1007/s00214-005-0052-6

By:

Yazyev, Oleg V.;
Helm, Lothar

Publication type:

Article

Serum Albumin Targeted, pH-Dependent Magnetic Resonance Relaxation Agents.

Published in:

Chemistry - A European Journal, 2012, v. 18, n. 12, p. 3675, doi. 10.1002/chem.201103344

By:

Moriggi, Loïck;
Yaseen, Mohammad A.;
Helm, Lothar;
Caravan, Peter

Publication type:

Article

Pyridine-Based Lanthanide Complexes Combining MRI and NIR Luminescence Activities.

Published in:

Chemistry - A European Journal, 2012, v. 18, n. 5, p. 1419, doi. 10.1002/chem.201102310

By:

Bonnet, Célia S.;
Buron, Frédéric;
Caillé, Fabien;
Shade, Chad M.;
Drahoš, Bohuslav;
Pellegatti, Laurent;
Zhang, Jian;
Villette, Sandrine;
Helm, Lothar;
Pichon, Chantal;
Suzenet, Franck;
Petoud, Stéphane;
Tóth, Éva

Publication type:

Article

Towards the Rational Design of MRI Contrast Agents: Electron Spin Relaxation Is Largely Unaffected by the Coordination Geometry of Gadolinium(III)-DOTA-Type Complexes.

Published in:

Chemistry - A European Journal, 2008, v. 14, n. 9, p. 2658, doi. 10.1002/chem.200701747

By:

Borel, Alain;
Bean, Jonathan F.;
Clarkson, Robert B.;
Helm, Lothar;
Moriggi, Loïck;
Sherry, A. Dean;
Woods, Mark

Publication type:

Article

Unexpected Aggregation of Neutral, Xylene-Cored Dinuclear GdIII Chelates in Aqueous Solution.

Published in:

Chemistry - A European Journal, 2006, v. 12, n. 26, p. 6841, doi. 10.1002/chem.200501335

By:

Jérôme Costa;
Edina Balogh;
Véronique Turcry;
Raphaël Tripier;
Michel Le Baccon;
Françoise Chuburu;
Henri Handel;
Lothar Helm;
Éva Tóth;
André E. Merbach

Publication type:

Article

Self‐Assembled Nanomicelles as MRI Blood‐Pool Contrast Agent.

Published in:

Chemistry - A European Journal, 2018, v. 24, n. 6, p. 1348, doi. 10.1002/chem.201703962

By:

Babič, Andrej;
Vorobiev, Vassily;
Xayaphoummine, Céline;
Lapicorey, Gaëlle;
Chauvin, Anne‐sophie;
Helm, Lothar;
Allémann, Eric

Publication type:

Article

MultipleFrequency and VariableTemperature EPR Study of GadoliniumIII Complexes with Polyaminocarboxylates: Analysis and Comparison of the Magnetically Dilute Powder and the FrozenSolution Spectra.

Published in:

Helvetica Chimica Acta, 2009, v. 92, n. 11, p. 2173, doi. 10.1002/hlca.200900117

By:

Meriem Benmelouka;
Johan VanTol;
Alain Borel;
Saritha Nellutla;
Marc Port;
Lothar Helm;
AndréE. Merbach

Publication type:

Article

Multinuclear NMR Studies of Ligand-Exchange Reactions on Analogous Technetium(V) and Rhenium(V) Complexes. Relevance to nuclear medicine.

Published in:

Helvetica Chimica Acta, 1992, v. 75, n. 1, p. 210, doi. 10.1002/hlca.19920750119

By:

Helm, Lothar;
Deutsch, Karen;
Deutsch, Edward A.;
Merbach, André E.

Publication type:

Article

Quantitative Formation in Water of [Ru(CO)(H2O)5]2+ from Hexaaquaruthenium(II) and Carbon Monoxide.

Published in:

Helvetica Chimica Acta, 1991, v. 74, n. 6, p. 1236, doi. 10.1002/hlca.19910740611

By:

Laurenczy, Gábor;
Helm, Lothar;
Ludi, Andreas;
Merbach, André E.

Publication type:

Article

A Variable-Pressure 2D 1H-NMR Study of the Mechanism of Trimethyl Phosphate Intermolecular Exchange and cis/ trains-Isomerisation of Tetrachlorobis(trimethyl phosphate)zirconium(IV).

Published in:

Helvetica Chimica Acta, 1990, v. 73, n. 1, p. 199, doi. 10.1002/hlca.19900730123

By:

Frey, Urban;
Helm, Lothar;
Merbach, André E.

Publication type:

Article

The solution structure and reactivity of decavanadate.

Published in:

Helvetica Chimica Acta, 1988, v. 71, n. 6, p. 1406, doi. 10.1002/hlca.19880710605

By:

Comba, Peter;
Helm, Lothar

Publication type:

Article

Intramolecular Dynamics of Five-coordinate iron Carbonyl Complexes with olefinic ligands as studied by variable-pressure 1H-NMR spectroscopy.

Published in:

Helvetica Chimica Acta, 1988, v. 71, n. 6, p. 1458, doi. 10.1002/hlca.19880710609

By:

Ioset, Jacques;
Helm, Lothar;
Merbach, André;
Roulet, Raymond;
Grepioni, Fabrizia;
Braga, Dario

Publication type:

Article

Dimethylformamide-Exchange Mechanism on Some First-Row Divalent Transition-Metal Ions.

Published in:

Helvetica Chimica Acta, 1987, v. 70, n. 6, p. 1516, doi. 10.1002/hlca.19870700608

By:

Cossy, Cédric;
Helm, Lothar;
Merbach, André E.

Publication type:

Article

Variable-Temperature and Variable-Pressure 17O-NMR Study of Water Exchange of Hexaaquaaluminium(III).

Published in:

Helvetica Chimica Acta, 1985, v. 68, n. 3, p. 545, doi. 10.1002/hlca.19850680302

By:

Hugi-Cleary, Deirdre;
Helm, Lothar;
Merbach, André E.

Publication type:

Article

Water Exchange on Hexaaquavanadium(III): a Variable-Temperature and Variable-Pressure 17O-NMR Study at 1.4 and 4.7 Tesla.

Published in:

Helvetica Chimica Acta, 1985, v. 68, n. 2, p. 508, doi. 10.1002/hlca.19850680224

By:

Hugi, Alain D.;
Helm, Lothar;
Merbach, André E.

Publication type:

Article

Dynamic aggregation of the mid-sized gadolinium complex {Ph[Gd(DTTA)(HO)]}.

Published in:

Journal of Biological Inorganic Chemistry (JBIC), 2014, v. 19, n. 2, p. 145, doi. 10.1007/s00775-013-1036-y

By:

Jaccard, Hugues;
Miéville, Pascal;
Cannizzo, Caroline;
Mayer, Cédric;
Helm, Lothar

Publication type:

Article

Physicochemical and MRI characterization of Gd3+-loaded polyamidoamine and hyperbranched dendrimers.

Published in:

Journal of Biological Inorganic Chemistry (JBIC), 2007, v. 12, n. 3, p. 406, doi. 10.1007/s00775-006-0197-3

By:

Jászberényi, Zoltán;
Moriggi, Loïck;
Schmidt, Philipp;
Weidensteiner, Claudia;
Kneuer, Rainer;
Merbach, André E.;
Helm, Lothar;
Tóth, Éva

Publication type:

Article

Collisional cross-section of water molecules in vapour studied by means of 1H relaxation in NMR.

Published in:

Scientific Reports, 2016, p. 38492, doi. 10.1038/srep38492

By:

Mammoli, Daniele;
Canet, Estel;
Buratto, Roberto;
Miéville, Pascal;
Helm, Lothar;
Bodenhausen, Geoffrey

Publication type:

Article

Richness of isomerism in labile octahedral Werner-type cobalt(II) complexes demonstrated by 19F NMR spectroscopy: structure and stability.

Published in:

Magnetic Resonance in Chemistry, 2004, v. 42, n. 9, p. 801, doi. 10.1002/mrc.1438

By:

Novitchi, Ghenadie;
Riblet, Fabrice;
Helm, Lothar;
Scopelliti, Rosario;
Gulea, Aurélian;
Merbach, André E.

Publication type:

Article

8S paramagnetic centres in molecular assemblies: possible effect of their proximity on the water proton relaxivity.

Published in:

Magnetic Resonance in Chemistry, 2003, v. 41, n. 10, p. 794, doi. 10.1002/mrc.1257

By:

Gaëlle M. Nicolle;
Lothar Helm;
André E. Merbach

Publication type:

Article

Coordination equilibrium- a clue for fast water exchange on potential magnetic resonance imaging contrast agents?

Published in:

Magnetic Resonance in Chemistry, 1999, v. 37, n. 10, p. 701, doi. 10.1002/(SICI)1097-458X(199910)37:10<701::AID-MRC523>3.0.CO;2-6

By:

Tóth, Éva;
Dhubhghaill, Orla M. Ni;
Besson, Ghislaine;
Helm, Lothar;
Merbach, André E.

Publication type:

Article

Geometrical confinement of gadolinium-based contrast agents in nanoporous particles enhances T1 contrast.

Published in:

Nature Nanotechnology, 2010, v. 5, n. 11, p. 815, doi. 10.1038/nnano.2010.203

By:

Ananta, Jeyarama S.;
Godin, Biana;
Sethi, Richa;
Moriggi, Loick;
Liu, Xuewu;
Serda, Rita E.;
Krishnamurthy, Ramkumar;
Muthupillai, Raja;
Bolskar, Robert D.;
Helm, Lothar;
Ferrari, Mauro;
Wilson, Lon J.;
Decuzzi, Paolo

Publication type:

Article

Water-Exchange Mechanism of Tetraaquapalladium(II). A Variable-Pressure and Variable-Temperature Oxygen-17 NMR Study.

Published in:

Helvetica Chimica Acta, 1984, v. 67, n. 6, p. 1453, doi. 10.1002/hlca.19840670605

By:

Helm, Lothar;
Elding, Lars I.;
Merbach, André E.

Publication type:

Article

A Demonstrated Example of Competing D and Id Mechanisms for Dimethylformamide Exchange on the Octakis (dimethylformamide)-erbium (III) Ion.

Published in:

Helvetica Chimica Acta, 1983, v. 66, n. 6, p. 1872, doi. 10.1002/hlca.19830660628

By:

Pisaniello, Dino L.;
Helm, Lothar;
Zbinden, Donald;
Merbach, André E.

Publication type:

Article