Publications published since 2000 from OUS - Medisinsk teknologisk virksomhet

126 publications found

Publications 2020

  1. Amini M, Niemi E, Hisdal J, Kalvøy H, Tronstad C, Scholz H, Rosales A, Martinsen ØG (2020)
    Monitoring the quality of frozen-thawed venous segments using bioimpedance spectroscopy
    Physiol Meas, 41 (4), 044008
    DOI 10.1088/1361-6579/ab85b7, PubMed 32235072
  2. Bari DS, Yacoob Aldosky HY, Martinsen ØG (2020)
    Simultaneous measurement of electrodermal activity components correlated with age-related differences
    J Biol Phys, 46 (2), 177-188
    DOI 10.1007/s10867-020-09547-4, PubMed 32444917
  3. Omenås IN, Tronstad C, Rosseland LA (2020)
    Accuracy and trending abilities of finger plethysmographic blood pressure and cardiac output compared to invasive measurements during caesarean delivery in healthy women: an observational study
    BMC Anesthesiol, 20 (1), 157
    DOI 10.1186/s12871-020-01078-8, PubMed 32593297
  4. Schalit I, Espinoza A, Pettersen FJ, Snartland S, Ringdal ML, Hoel TN, Skulstad H, Fosse E, Fiane AE, Halvorsen PS (2020)
    Detection of Thromboembolic Events and Pump Thrombosis in HeartWare HVAD Using Accelerometer in a Porcine Model
    ASAIO J, 66 (1), 38-48
    DOI 10.1097/MAT.0000000000000954, PubMed 30688692

Publications 2019

  1. Aria S, Elfarri Y, Elvegård M, Gottfridsson A, Grønaas HS, Harang S, Jansen A, Madland TER, Martins IB, Olstad MW, Ryan TL, Shaban AN, Svenningsen ØL, Sørensen AD, Ulvestad EH, Vister OM, Øvergaard MB, Kalvøy H, Pettersen FJ, Odland HH, Joten VM, Martinsen ØG, Tronstad C, Elvebakk O, Martinsen ØG (2019)
    Measuring Blood Pulse Wave Velocity with Bioimpedance in Different Age Groups
    Sensors (Basel), 19 (4)
    DOI 10.3390/s19040850, PubMed 30791368
  2. Bjørhei A, Pedersen FT, Muhammad S, Tronstad C, Kalvøy H, Wojniusz S, Pabst O, Sütterlin S (2019)
    An Investigation on Bilateral Asymmetry in Electrodermal Activity
    Front Behav Neurosci, 13, 88
    DOI 10.3389/fnbeh.2019.00088, PubMed 31133830
  3. Egelandsdal B, Abie SM, Bjarnadottir S, Zhu H, Kolstad H, Bjerke F, Martinsen ØG, Mason A, Münch D (2019)
    Detectability of the degree of freeze damage in meat depends on analytic-tool selection
    Meat Sci, 152, 8-19
    DOI 10.1016/j.meatsci.2019.02.002, PubMed 30784871
  4. Elvebakk O, Tronstad C, Birkeland KI, Jenssen TG, Bjørgaas MR, Frøslie KF, Godang K, Kalvøy H, Martinsen ØG, Gulseth HL (2019)
    Author Correction: Evaluation of Hypoglycaemia with Non-Invasive Sensors in People with Type 1 Diabetes and Impaired Awareness of Hypoglycaemia
    Sci Rep, 9 (1), 6347
    DOI 10.1038/s41598-019-42218-6, PubMed 30988313
  5. Elvebakk O, Tronstad C, Birkeland KI, Jenssen TG, Bjørgaas MR, Gulseth HL, Kalvøy H, Høgetveit JO, Martinsen ØG (2019)
    A multiparameter model for non-invasive detection of hypoglycemia
    Physiol Meas, 40 (8), 085004
    DOI 10.1088/1361-6579/ab3676, PubMed 31357185
  6. Jan-Hugo Andersen, Olav Bjerke, Fatos Blakaj, Vilde Moe Flugsrud, Fredrik Alstad Jacobsen, Marius Jonsson, Eirik Nobuki Kosaka, Petter André Langstrand , Øyvind Grannes Martinsen, Alexander Stene Moen, Emily Qing Zang Moen, Øyvind Knutsen Nystad, Eline Olesen, Mahum Qureshi , Victor Jose Østrem Risopatron, Simen Kristoffer Ruud, Nikolai Stensø, Fredrik Lindseth Winje, Eirik Vetle Winness, Sisay Abie, Vegard Munkeby Joten, Tronstad C, Elvebakk O, Martinsen G (2019)
    Bioimpedance and NIR for non-invasive assessment of blood glucose
    Journal of Electrical Bioimpedance, 10 (1), 133–138
    DOI 10.2478/joeb-2019-0019, PublikaID 341
  7. Martinsen G, Kalvøy H, Dindar S. Bari, Tronstad C (2019)
    A circuit for simultaneous measurements of skin electrical conductance, susceptance, and potential
    Journal of Electrical Bioimpedance, 10 (1), 110–112
    DOI 10.2478/joeb-2019-0016, PublikaID 340
  8. Martinsen T, Pettersen FJ, Kalvøy H, Tronstad C, Kvarstein G, Bakken A, Høgetveit JO, Martinsen ØG, Grimnes S, Frich L (2019)
    Electrosurgery and Temperature Increase in Tissue With a Passive Metal Implant
    Front Surg, 6, 8
    DOI 10.3389/fsurg.2019.00008, PubMed 30915337
  9. Pabst O, Martinsen ØG (2019)
    Simulation based comparison between a transversal and a tangential memristor model with a capacitance in parallel
    PLoS One, 14 (8), e0221533
    DOI 10.1371/journal.pone.0221533, PubMed 31442270
  10. Pabst O, Martinsen ØG, Chua L (2019)
    Information can be stored in the human skin memristor which has non-volatile memory
    Sci Rep, 9 (1), 19260
    DOI 10.1038/s41598-019-55749-9, PubMed 31848426
  11. Tronstad C, Høgetveit JO, Elvebakk O, Kalvøy H (2019)
    Age-related differences in the morphology of the impedance cardiography signal
    Journal of Electrical Bioimpedance, 10 (1), 139–145
    DOI 10.2478/joeb-2019-0020, PublikaID 339
  12. Tronstad C, Strand-Amundsen RJ (2019)
    Possibilities in the application of machine learning on bioimpedance time-series
    Journal of Electrical Bioimpedance, 10 (1), 24–33
    DOI 10.2478/joeb-2019-0004, PublikaID 338

Publications 2018

  1. Amini M, Hisdal J, Kalvøy H (2018)
    Applications of bioimpedance measurement techniques in tissue engineering
    Journal of Electrical Bioimpedance, 9 (1), 142–158
    DOI 10.2478/joeb-2018-0019, PublikaID 309
  2. Anso J, Balmer TW, Jegge Y, Kalvoy H, Bell BJ, Dur C, Calvo EM, Williamson TM, Gerber N, Ferrario D, Forterre F, Buchler P, Stahel A, Caversaccio MD, Weber S, Gavaghan KA (2018)
    Electrical Impedance to Assess Facial Nerve Proximity During Robotic Cochlear Implantation
    IEEE Trans Biomed Eng, 66 (1), 237-245
    DOI 10.1109/TBME.2018.2830303, PubMed 29993441
  3. Bari DS, Aldosky HYY, Tronstad C, Kalvøy H, Martinsen G (2018)
    Electrodermal activity responses for quantitative assessment of felt pain
    Journal of Electrical Bioimpedance, 9 (1), 52–58
    DOI 10.2478/joeb-2018-0010, PublikaID 311
  4. Bari DS, Aldosky HYY, Tronstad C, Kalvøy H, Martinsen ØG (2018)
    Influence of Relative Humidity on Electrodermal Levels and Responses
    Skin Pharmacol Physiol, 31 (6), 298-307
    DOI 10.1159/000492275, PubMed 30179872
  5. Bruehl S, Olsen RB, Tronstad C, Sevre K, Burns JW, Schirmer H, Nielsen CS, Stubhaug A, Rosseland LA (2018)
    Chronic pain-related changes in cardiovascular regulation and impact on comorbid hypertension in a general population: the Tromsø study
    Pain, 159 (1), 119-127
    DOI 10.1097/j.pain.0000000000001070, PubMed 28953193
  6. Elvebakk O, Tronstad C, Birkeland KI, Jenssen TG, Bjørgaas MR, Frøslie KF, Godang K, Kalvøy H, Martinsen ØG, Gulseth HL (2018)
    Evaluation of Hypoglycaemia with Non-Invasive Sensors in People with Type 1 Diabetes and Impaired Awareness of Hypoglycaemia
    Sci Rep, 8 (1), 14722
    DOI 10.1038/s41598-018-33189-1, PubMed 30283093
  7. Mesri A, Cunha AB, Martinsen OG, Sampietro M, Ferrari G (2018)
    A Laser Diode-Based Wireless Optogenetic
    2018 14TH CONFERENCE ON PHD RESEARCH IN MICROELECTRONICS AND ELECTRONICS (PRIME 2018), 257-260
  8. Pabst O, Martinsen OG (2018)
    Interpretation of the pinched point position in human skin memristor measurements
    IFMBE PROC, 65, 430-433
  9. Pabst O, Martinsen ØG, Chua L (2018)
    The non-linear electrical properties of human skin make it a generic memristor
    Sci Rep, 8 (1), 15806
    DOI 10.1038/s41598-018-34059-6, PubMed 30361557
  10. Pettersen FJ (2018)
    On sensitivity in transfer impedance measurements
    Journal of Electrical Bioimpedance, 9 (1), 159–162
    DOI 10.2478/joeb-2018-0020, PublikaID 310
  11. Schalit I, Espinoza A, Pettersen FJ, Thiara APS, Karlsen H, Sørensen G, Fosse E, Fiane AE, Halvorsen PS (2018)
    Accelerometer Detects Pump Thrombosis and Thromboembolic Events in an In vitro HVAD Circuit
    ASAIO J, 64 (5), 601-609
    DOI 10.1097/MAT.0000000000000699, PubMed 29088023
  12. Strand-Amundsen RJ, Reims HM, Reinholt FP, Ruud TE, Yang R, Høgetveit JO, Tønnessen TI (2018)
    Ischemia/reperfusion injury in porcine intestine - Viability assessment
    World J Gastroenterol, 24 (18), 2009-2023
    DOI 10.3748/wjg.v24.i18.2009, PubMed 29760544
  13. Strand-Amundsen RJ, Tronstad C, Kalvøy H, Ruud TE, Høgetveit JO, Martinsen ØG, Tønnessen TI (2018)
    Small intestinal ischemia and reperfusion-bioimpedance measurements
    Physiol Meas, 39 (2), 025001
    DOI 10.1088/1361-6579/aaa576, PubMed 29303488
  14. Strand-Amundsen RJ, Tronstad C, Reims HM, Reinholt FP, Høgetveit JO, Tønnessen TI (2018)
    Machine learning for intraoperative prediction of viability in ischemic small intestine
    Physiol Meas, 39 (10), 105011
    DOI 10.1088/1361-6579/aae0ea, PubMed 30207981
  15. Tronstad C, Elvebakk O, Staal OM, Kalvøy H, Høgetveit JO, Jenssen TG, Birkeland KI, Martinsen ØG (2018)
    Non-invasive prediction of blood glucose trends during hypoglycemia
    Anal Chim Acta, 1052, 37-48
    DOI 10.1016/j.aca.2018.12.009, PubMed 30685040

Publications 2017

  1. Adamczak MI, Martinsen ØG, Smistad G, Hiorth M (2017)
    Polymer coated mucoadhesive liposomes intended for the management of xerostomia
    Int J Pharm, 527 (1-2), 72-78
    DOI 10.1016/j.ijpharm.2017.05.032, PubMed 28522426
  2. Bari DS, Aldosky HYY, Tronstad C, Kalvøy H, Martinsen ØG (2017)
    Electrodermal responses to discrete stimuli measured by skin conductance, skin potential, and skin susceptance
    Skin Res Technol, 24 (1), 108-116
    DOI 10.1111/srt.12397, PubMed 28776764
  3. Kalvoy H, Tronstad C, Ullensvang K, Steinfeldt T, Sauter AR (2017)
    Detection of needle to nerve contact based on electric bioimpedance and machine learning methods
    Conf Proc IEEE Eng Med Biol Soc, 2017, 9-12
    DOI 10.1109/EMBC.2017.8036750, PubMed 29059798
  4. Pabst O, Tronstad C, Martinsen OG (2017)
    Instrumentation, electrode choice and challenges in human skin memristor measurement
    Conf Proc IEEE Eng Med Biol Soc, 2017, 1844-1848
    DOI 10.1109/EMBC.2017.8037205, PubMed 29060249
  5. Restan MS, Jensen H, Shen X, Huang C, Martinsen ØG, Kubáň P, Gjelstad A, Pedersen-Bjergaard S (2017)
    Comprehensive study of buffer systems and local pH effects in electromembrane extraction
    Anal Chim Acta, 984, 116-123
    DOI 10.1016/j.aca.2017.06.049, PubMed 28843554
  6. Schwingenschuh S, Scharfetter H, Martinsen ØG, Boulgaropoulos B, Augustin T, Tiffner KI, Dragatin C, Raml R, Hoefferer C, Prandl EC, Sinner F, Hajnsek M (2017)
    Assessment of skin permeability to topically applied drugs by skin impedance and admittance
    Physiol Meas, 38 (11), N138-N150
    DOI 10.1088/1361-6579/aa904e, PubMed 28967873
  7. Skjærvø Ø, Brandtzaeg OK, Lausund KB, Pabst O, Martinsen ØG, Lundanes E, Wilson SR (2017)
    Exploring bioimpendance instrumentation for the characterization of open tubular liquid chromatography columns
    J Chromatogr A, 1534, 195-200
    DOI 10.1016/j.chroma.2017.12.060, PubMed 29290401
  8. Strand-Amundsen RJ, Reims HM, Tronstad C, Kalvøy H, Martinsen ØG, Høgetveit JO, Ruud TE, Tønnessen TI (2017)
    Ischemic small intestine-in vivo versus ex vivo bioimpedance measurements
    Physiol Meas, 38 (5), 715-728
    DOI 10.1088/1361-6579/aa67b7, PubMed 28319030
  9. Tronstad C, Elvebakk O, Kalvoy H, Bjorgaas MR, Martinsen OG (2017)
    Detection of sympathoadrenal discharge by parameterisation of skin conductance and ECG measurement
    Conf Proc IEEE Eng Med Biol Soc, 2017, 3997-4000
    DOI 10.1109/EMBC.2017.8037732, PubMed 29060773

Publications 2016

  1. Abie SM, Bergli J, Galperin Y, Martinsen OG (2016)
    Universality of AC conductance in human hair
    Biomed. Phys. Eng. Express, 2 (2), UNSP 027002
  2. Adamczak MI, Martinsen ØG, Smistad G, Hiorth M (2016)
    Water sorption properties of HM-pectin and liposomes intended to alleviate dry mouth
    Int J Pharm, 506 (1-2), 201-6
    DOI 10.1016/j.ijpharm.2016.04.050, PubMed 27109048
  3. Canali C, Aristovich K, Ceccarelli L, Larsen LB, Martinsen G, Wolff A, Dufva M, Emnéus J, Heiskanen A (2016)
    Electrical impedance tomography methods for miniaturised 3D systems
    Journal of Electrical Bioimpedance, 7, 59–67
    DOI 10.5617/jeb.4084, PublikaID 239
  4. Nygaard K, Thiara AS, Tronstad C, Ringdal MA, Fiane AE (2016)
    VAVD vacuum may cause bubble transgression in membrane oxygenators
    Perfusion, 31 (8), 648-652
    DOI 10.1177/0267659116651345, PubMed 27226328
  5. Pabst O, Tronstad C, Grimnes S, Fowles D, Martinsen ØG (2016)
    Comparison between the AC and DC measurement of electrodermal activity
    Psychophysiology, 54 (3), 374-385
    DOI 10.1111/psyp.12803, PubMed 28000290
  6. Pettersen FJ, Martinsen OG, Hogetveit JO, Kalvoy H, Odland HH (2016)
    Bioimpedance measurements of temporal changes in beating hearts
    Biomed. Phys. Eng. Express, 2 (6), UNSP 065015
  7. Strand-Amundsen RJ, Tronstad C, Kalvøy H, Gundersen Y, Krohn CD, Aasen AO, Holhjem L, Reims HM, Martinsen ØG, Høgetveit JO, Ruud TE, Tønnessen TI (2016)
    In vivo characterization of ischemic small intestine using bioimpedance measurements
    Physiol Meas, 37 (2), 257-75
    DOI 10.1088/0967-3334/37/2/257, PubMed 26805916

Publications 2015

  1. Canali C, Larsen LB, Martinsen OG, Heiskanen A (2015)
    Conductometric analysis in bio-applications: A universal impedance spectroscopy-based approach using modified electrodes
    Sens. Actuator B-Chem., 212, 544-550
  2. Canali C, Mazzoni C, Larsen LB, Heiskanen A, Martinsen ØG, Wolff A, Dufva M, Emnéus J (2015)
    An impedance method for spatial sensing of 3D cell constructs--towards applications in tissue engineering
    Analyst, 140 (17), 6079-88
    DOI 10.1039/c5an00987a, PubMed 26198701
  3. Canali C, Mohanty S, Heiskanen A, Muhammad HB, Martinsen OG, Dufva M, Wolff A, Emneus J (2015)
    Impedance Spectroscopic Characterisation of Porosity in 3D Cell Culture Scaffolds with Different Channel Networks
    Electroanalysis, 27 (1), 193-199
  4. Herum KM, Lunde IG, Skrbic B, Louch WE, Hasic A, Boye S, Unger A, Brorson SH, Sjaastad I, Tønnessen T, Linke WA, Gomez MF, Christensen G (2015)
    Syndecan-4 is a key determinant of collagen cross-linking and passive myocardial stiffness in the pressure-overloaded heart
    Cardiovasc Res, 106 (2), 217-26
    DOI 10.1093/cvr/cvv002, PubMed 25587045
  5. Kalvoy H, Aliau-Bonet C, Pallas-Areny R, Martinsen OG (2015)
    Effects of stray capacitance to ground in three electrode monopolar needle bioimpedance measurements
    Conf Proc IEEE Eng Med Biol Soc, 2015, 7542-5
    DOI 10.1109/EMBC.2015.7320137, PubMed 26738037
  6. Kalvøy H, Sauter AR (2015)
    Detection of intraneural needle-placement with multiple frequency bioimpedance monitoring: a novel method
    J Clin Monit Comput, 30 (2), 185-92
    DOI 10.1007/s10877-015-9698-3, PubMed 25902898
  7. Martinsen G, Pabst O, Tronstad C, Grimnes S (2015)
    Sources of error in AC measurement of skin conductance
    Journal of Electrical Bioimpedance, 6 (2015), 49-53
    DOI 10.5617/jeb.2640, PublikaID 230
  8. Pettersen FJ, Høgetveit JO (2015)
    Optically isolated current source
    Journal of Electrical Bioimpedance, 6 (2015), 18-21
    DOI 10.5617/jeb.2571, PublikaID 223
  9. Pettersen FJ, Martinsen T, Hogetveit JO, Martinsen OG (2015)
    Unintentional heating at implants when using electrosurgery
    Conf Proc IEEE Eng Med Biol Soc, 2015, 5805-8
    DOI 10.1109/EMBC.2015.7319711, PubMed 26737611
  10. Tronstad C, Omenås IN, Rosseland LA (2015)
    An improved artifact removal algorithm for continuous cardiac output and blood pressure recordings
    Conf Proc IEEE Eng Med Biol Soc, 2015, 5968-72
    DOI 10.1109/EMBC.2015.7319751, PubMed 26737651
  11. Tronstad C, Staal OM, Saelid S, Martinsen OG (2015)
    Model- based filtering for artifact and noise suppression with state estimation for electrodermal activity measurements in real time
    Conf Proc IEEE Eng Med Biol Soc, 2015, 2750-3
    DOI 10.1109/EMBC.2015.7318961, PubMed 26736861

Publications 2014

  1. Canali C, Heiskanen A, Muhammad HB, Høyum P, Pettersen FJ, Hemmingsen M, Wolff A, Dufva M, Martinsen ØG, Emnéus J (2014)
    Bioimpedance monitoring of 3D cell culturing--complementary electrode configurations for enhanced spatial sensitivity
    Biosens Bioelectron, 63, 72-79
    DOI 10.1016/j.bios.2014.07.020, PubMed 25058941
  2. Martinsen ØG, Nordbotten B, Grimnes S, Fossan H, Eilevstjønn J (2014)
    Bioimpedance-based respiration monitoring with a defibrillator
    IEEE Trans Biomed Eng, 61 (6), 1858-62
    DOI 10.1109/TBME.2014.2308924, PubMed 24845296
  3. Pettersen FJ, Ferdous H, Kalvøy H, Martinsen ØG, Høgetveit JO (2014)
    Comparison of four different FIM configurations--a simulation study
    Physiol Meas, 35 (6), 1067-82
    DOI 10.1088/0967-3334/35/6/1067, PubMed 24844930
  4. Pischke SE, Hyler S, Tronstad C, Bergsland J, Fosse E, Halvorsen PS, Skulstad H, Tønnessen TI (2014)
    Myocardial tissue CO2 tension detects coronary blood flow reduction after coronary artery bypass in real-time†
    Br J Anaesth, 114 (3), 414-22
    DOI 10.1093/bja/aeu381, PubMed 25392231
  5. Tronstad C, Helsing P, Tønseth KA, Grimnes S, Krogstad AL (2014)
    Tumescent suction curettage vs. curettage only for treatment of axillary hyperhidrosis evaluated by subjective and new objective methods
    Acta Derm Venereol, 94 (2), 215-20
    DOI 10.2340/00015555-1671, PubMed 24002584
  6. Tronstad C, Pripp AH (2014)
    Statistical methods for bioimpedance analysis
    J Electr Bioimp, 5, 14–27
    DOI 10.5617/jeb.830, PublikaID 218
  7. Øyri K, Chávez-Santiago R, Støa S, Martinsen ØG, Balasingham I, Fosse E (2014)
    Wireless vital signs from a life-supporting medical device exposed to electromagnetic disturbance
    Minim Invasive Ther Allied Technol, 23 (6), 341-9
    DOI 10.3109/13645706.2014.931869, PubMed 24976270

Publications 2013

  1. Abir R, Pettersen FJ, Martinsen G, Rabbani KS (2013)
    Effect of a spherical object in 4 electrode Focused Impedance Method (FIM): measurement and simulation
    J Phys: Conf Ser, 434, 012009
    DOI 10.1088/1742-6596/434/1/012009, PublikaID 212
  2. Tronstad C, Kalvøy H, Grimnes S, Martinsen Ø (2013)
    Improved estimation of sweating based on electrical properties of skin
    Ann Biomed Eng, 41 (5), 1074-83
    DOI 10.1007/s10439-013-0743-4, PubMed 23325304
  3. Tronstad C, Kalvøy H, Grimnes S, Martinsen ØG (2013)
    Waveform difference between skin conductance and skin potential responses in relation to electrical and evaporative properties of skin
    Psychophysiology, 50 (11), 1070-8
    DOI 10.1111/psyp.12092, PubMed 23889171

Publications 2012

  1. Ahn AC, Gow BJ, Martinsen OG, Zhao M, Grodzinsky AJ, Baikie ID (2012)
    Applying the Kelvin probe to biological tissues: theoretical and computational analyses
    Phys Rev E Stat Nonlin Soft Matter Phys, 85 (6 Pt 1), 061901
    DOI 10.1103/PhysRevE.85.061901, PubMed 23005121
  2. Boucsein W, Fowles DC, Grimnes S, Ben-Shakhar G, roth WT, Dawson ME, Filion DL, Society for Psychophysiological Research Ad Hoc Committee on Electrodermal Measures (2012)
    Publication recommendations for electrodermal measurements
    Psychophysiology, 49 (8), 1017-34
    DOI 10.1111/j.1469-8986.2012.01384.x, PubMed 22680988
  3. Gow BJ, Cheng JL, Baikie ID, Martinsen OG, Zhao M, Smith S, Ahn AC (2012)
    Electrical potential of acupuncture points: use of a noncontact scanning Kelvin probe
    Evid Based Complement Alternat Med, 2012, 632838
    DOI 10.1155/2012/632838, PubMed 23320033
  4. Haugan B, Langerud AK, Kalvøy H, Frøslie KF, Riise E, Kapstad H (2012)
    Can we trust the new generation of infrared tympanic thermometers in clinical practice?
    J Clin Nurs, 22 (5-6), 698-709
    DOI 10.1111/j.1365-2702.2012.04077.x, PubMed 22860884
  5. Hoekstra F, Martinsen OG, Verdaasdonk RM, Janssen TWJ, Meijer JH (2012)
    The Initial Systolic Time Interval in patients with spinal cord injury measured with impedance cardiography
    J PHYS CONF SER, 407, UNSP 012025
  6. Johnsen GK, Knaapila M, Martinsen OG, Helgesen G (2012)
    Conductivity enhancement of silver filled polymer composites through electric field alignment
    Compos. Sci. Technol., 72 (15), 1841-1847
  7. Pischke SE, Tronstad C, Holhjem L, Halvorsen PS, Tønnessen TI (2012)
    Perioperative detection of myocardial ischaemia/reperfusion with a novel tissue CO2 monitoring technology
    Eur J Cardiothorac Surg, 42 (1), 157-63
    DOI 10.1093/ejcts/ezr278, PubMed 22290904
  8. Pischke SE, Tronstad C, Holhjem L, Line PD, Haugaa H, Tønnessen TI (2012)
    Hepatic and abdominal carbon dioxide measurements detect and distinguish hepatic artery occlusion and portal vein occlusion in pigs
    Liver Transpl, 18 (12), 1485-94
    DOI 10.1002/lt.23544, PubMed 22961940

Publications 2011

  1. Eide PK, Bakken A (2011)
    The baseline pressure of intracranial pressure (ICP) sensors can be altered by electrostatic discharges
    Biomed Eng Online, 10, 75
    DOI 10.1186/1475-925X-10-75, PubMed 21859487
  2. Grimnes S, Jabbari A, Martinsen ØG, Tronstad C (2011)
    Electrodermal activity by DC potential and AC conductance measured simultaneously at the same skin site
    Skin Res Technol, 17 (1), 26-34
    DOI 10.1111/j.1600-0846.2010.00459.x, PubMed 20923453
  3. Høgetveit JO, Saatvedt K, Norum H, Kristiansen F, Elvebakk O, Dahle G, Geiran OR (2011)
    Central venous catheters may be a potential source of massive air emboli during vascular procedures involving extracorporeal circulation: an experimental study
    Perfusion, 26 (4), 341-6
    DOI 10.1177/0267659111403644, PubMed 21558301
  4. Johnsen GK, Lütken CA, Martinsen OG, Grimnes S (2011)
    Memristive model of electro-osmosis in skin
    Phys Rev E Stat Nonlin Soft Matter Phys, 83 (3 Pt 1), 031916
    DOI 10.1103/PhysRevE.83.031916, PubMed 21517534
  5. Johnsen GK, Norlen L, Martinsen ØG, Grimnes S (2011)
    Sorption properties of the human stratum corneum
    Skin Pharmacol Physiol, 24 (4), 190-8
    DOI 10.1159/000324051, PubMed 21346399
  6. Kalvøy H, Johnsen GK, Martinsen OG, Grimnes S (2011)
    New method for separation of electrode polarization impedance from measured tissue impedance
    Open Biomed Eng J, 5, 8-13
    DOI 10.2174/1874120701105010008, PubMed 21625369
  7. Knaapila M, Rømoen OT, Svåsand E, Pinheiro JP, Martinsen ØG, Buchanan M, Skjeltorp AT, Helgesen G (2011)
    Conductivity enhancement in carbon nanocone adhesive by electric field induced formation of aligned assemblies
    ACS Appl Mater Interfaces, 3 (2), 378-84
    DOI 10.1021/am100990c, PubMed 21268639
  8. Mikolajewska P, Rømoen OT, Martinsen OG, Iani V, Moan J, Grimnes S, Juzeniene A (2011)
    Bioimpedance for pain monitoring during cutaneous photodynamic therapy: Preliminary study
    Photodiagnosis Photodyn Ther, 8 (4), 307-13
    DOI 10.1016/j.pdpdt.2011.06.001, PubMed 22122917
  9. Nordbotten BJ, Tronstad C, Martinsen Ø, Grimnes S (2011)
    Evaluation of algorithms for calculating bioimpedance phase angle values from measured whole-body impedance modulus
    Physiol Meas, 32 (7), 755-65
    DOI 10.1088/0967-3334/32/7/S03, PubMed 21646707
  10. Pettersen FJ, Høgetveit JO (2011)
    From 3D tissue data to impedance using Simpleware ScanFE+IP and COMSOL Multiphysics – a tutorial
    JEB, 2, 13-32
    DOI 10.5617/jeb.173, PublikaID 126

Publications 2010

  1. Høyum P, Kalvøy H, Martinsen ØG, Grimnes S (2010)
    A finite element model of needle electrode spatial sensitivity
    Physiol Meas, 31 (10), 1369-79
    DOI 10.1088/0967-3334/31/10/006, PubMed 20736490
  2. Johnsen GK, Haugsnes AB, Martinsen OG, Grimnes S (2010)
    A new approach for an estimation of the equilibrium stratum corneum water content
    Skin Res Technol, 16 (2), 142-5
    DOI 10.1111/j.1600-0846.2009.00412.x, PubMed 20456093
  3. Kalvøy H, Tronstad C, Nordbotten B, Grimnes S, Martinsen ØG (2010)
    Electrical impedance of stainless steel needle electrodes
    Ann Biomed Eng, 38 (7), 2371-82
    DOI 10.1007/s10439-010-9989-2, PubMed 20217478
  4. Pettersen FJ, Martinsen G, Grimnes S, Høgetveit JO (2010)
    Impedance measurement set-up based on off-the-shelf PXI modules.
    Journal of Physics: Conference Series, 224 (1), 012002
    DOI 10.1088/1742-6596/224/1/012002, PublikaID 127
  5. Tronstad C, Johnsen GK, Grimnes S, Martinsen ØG (2010)
    A study on electrode gels for skin conductance measurements
    Physiol Meas, 31 (10), 1395-410
    DOI 10.1088/0967-3334/31/10/008, PubMed 20811086
  6. Tronstad C, Pischke SE, Holhjem L, Tønnessen TI, Martinsen OG, Grimnes S (2010)
    Early detection of cardiac ischemia using a conductometric pCO(2) sensor: real-time drift correction and parameterization
    Physiol Meas, 31 (9), 1241-55
    DOI 10.1088/0967-3334/31/9/013, PubMed 20702916

Publications 2009

  1. Grimnes S, Martinsen OG, Tronstad C (2009)
    Noise properties of the 3-electrode skin admittance measuring circuit
    IFMBE PROC, 22 (1-3), 720-722
  2. Høgetveit JO, Kristiansen F, Røislien J (2009)
    A novel method for indirectly monitoring arterial pO(2) during cardiopulmonary bypass
    J Med Eng Technol, 33 (7), 567-74
    DOI 10.1080/03091900903071897, PubMed 19591049
  3. Kalvøy H, Frich L, Grimnes S, Martinsen OG, Hol PK, Stubhaug A (2009)
    Impedance-based tissue discrimination for needle guidance
    Physiol Meas, 30 (2), 129-40
    DOI 10.1088/0967-3334/30/2/002, PubMed 19136732
  4. Martinsen OG, Grimnes S (2009)
    The concept of transfer impedance in bioimpedance measurements
    IFMBE PROC, 22 (1-3), 1078-+
  5. Sauter AR, Dodgson MS, Kalvøy H, Grimnes S, Stubhaug A, Klaastad O (2009)
    Current threshold for nerve stimulation depends on electrical impedance of the tissue: a study of ultrasound-guided electrical nerve stimulation of the median nerve
    Anesth Analg, 108 (4), 1338-43
    DOI 10.1213/ane.0b013e3181957d84, PubMed 19299809
  6. Svasand E, Kristiansen KD, Martinsen OG, Helgesen G, Grimnes S, Skjeltorp AT (2009)
    Behavior of carbon cone particle dispersions in electric and magnetic fields
    Colloid Surf. A-Physicochem. Eng. Asp., 339 (1-3), 211-216

Publications 2008

  1. Ahn AC, Colbert AP, Anderson BJ, Martinsen OG, Hammerschlag R, Cina S, Wayne PM, Langevin HM (2008)
    Electrical properties of acupuncture points and meridians: a systematic review
    Bioelectromagnetics, 29 (4), 245-56
    DOI 10.1002/bem.20403, PubMed 18240287
  2. Kalvoy H, Martinsen OG, Grimnes S (2008)
    Determination of tissue type surrounding a needle tip by electrical bioimpedance
    Conf Proc IEEE Eng Med Biol Soc, 2008, 2285-6
    DOI 10.1109/IEMBS.2008.4649653, PubMed 19163156
  3. Martinsen OG, Grimnes S, Nilsen SH (2008)
    Water sorption and electrical properties of a human nail
    Skin Res Technol, 14 (2), 142-6
    DOI 10.1111/j.1600-0846.2007.00267.x, PubMed 18412555
  4. Martinsen ØG, Grimnes S, Nilsen JK, Tronstad C, Jang W, Kim H, Shin K, Naderi M, Thielmann F (2008)
    Gravimetric method for in vitro calibration of skin hydration measurements
    IEEE Trans Biomed Eng, 55 (2 Pt 1), 728-32
    DOI 10.1109/TBME.2007.912651, PubMed 18270010
  5. Tronstad C, Gjein GE, Grimnes S, Martinsen ØG, Krogstad AL, Fosse E (2008)
    Electrical measurement of sweat activity
    Physiol Meas, 29 (6), S407-15
    DOI 10.1088/0967-3334/29/6/S34, PubMed 18544832
  6. Tronstad C, Martinsen OG, Grimnes S (2008)
    Embedded instrumentation for skin admittance measurement
    Conf Proc IEEE Eng Med Biol Soc, 2008, 2373-6
    DOI 10.1109/IEMBS.2008.4649676, PubMed 19163179

Publications 2007

  1. Ahn AC, Martinsen OG (2007)
    Electrical characterization of acupuncture points: technical issues and challenges
    J Altern Complement Med, 13 (8), 817-24
    DOI 10.1089/acm.2007.7193, PubMed 17983337
  2. Grimnes S, Martinsen OG (2007)
    Sources of error in tetrapolar impedance measurements on biomaterials and other ionic conductors
    J. Phys. D-Appl. Phys., 40 (1), 9-14
  3. Grimnes S, Martinsen OG (2007)
    Comments on "algorithm for tissue ischemia estimation based on electrical impedance spectroscopy"
    IEEE Trans Biomed Eng, 54 (2), 344
    DOI 10.1109/TBME.2006.889664, PubMed 17278593
  4. Kalvoy H, Grimnes S, Martinsen OG (2007)
    Needle position determined by tissue impedance
    IFMBE PROC, 17, 205-+
  5. Martinsen OG, Grimnes S, Nilsen JK, Tronstad C, Jang W, Kim H, Shin K (2007)
    Calibration of skin hydration measurements
    IFMBE PROC, 17, 161-+
  6. Mirtaheri P, Grimnes S, Martinsen OG (2007)
    Designing a PtCO2 sensor based on conductivity measurements
    IFMBE PROC, 17, 300-+
  7. Tronstad C, Grimnes S, Martinsen OG, Fosse E (2007)
    Developmeut of a medical device for long-term sweat activity measurements
    IFMBE PROC, 17, 236-+

Publications 2006

  1. Fahlstrøm E, Grimnes S, Johannejen NH (2006)
    An interdepartmental, standardized equipment pool
    J Nurs Manag, 14 (2), 148-54
    DOI 10.1111/j.1365-2934.2006.00564.x, PubMed 16487426
  2. Høgetveit JO, Kristiansen F, Pedersen TH (2006)
    Development of an instrument to indirectly monitor arterial pCO2 during cardiopulmonary bypass
    Perfusion, 21 (1), 13-9
    DOI 10.1191/0267659106pf841oa, PubMed 16485694
  3. Kristiansen F, Høgetveit JO, Pedersen TH (2006)
    Clinical evaluation of an instrument to measure carbon dioxide tension at the oxygenator gas outlet in cardiopulmonary bypass
    Perfusion, 21 (1), 21-6
    DOI 10.1191/0267659106pf842oa, PubMed 16485695
  4. Øyri K, Balasingham I, Samset E, Høgetveit JO, Fosse E (2006)
    Wireless continuous arterial blood pressure monitoring during surgery: a pilot study
    Anesth Analg, 102 (2), 478-83
    DOI 10.1213/01.ane.0000195232.11264.46, PubMed 16428546

Publications 2005

  1. Elle OJ, Halvorsen S, Gulbrandsen MG, Aurdal L, Bakken A, Samset E, Dugstad H, Fosse E (2005)
    Early recognition of regional cardiac ischemia using a 3-axis accelerometer sensor
    Physiol Meas, 26 (4), 429-40
    DOI 10.1088/0967-3334/26/4/009, PubMed 15886438
  2. Mirtaheri P, Grimnes S, Martinsen OG (2005)
    Electrode polarization impedance in weak NaCl aqueous solutions
    IEEE Trans Biomed Eng, 52 (12), 2093-9
    DOI 10.1109/TBME.2005.857639, PubMed 16366232
  3. Samset E, Høgetveit JO, Cate GT, Hirschberg H (2005)
    Integrated neuronavigation system with intraoperative image updating
    Minim Invasive Neurosurg, 48 (2), 73-6
    DOI 10.1055/s-2004-830224, PubMed 15906200

Publications 2004

  1. Mirtaheri P, Grimnes S, Martinsen OG, Tønnessen TI (2004)
    A new biomedical sensor for measuring PCO2
    Physiol Meas, 25 (2), 421-36
    DOI 10.1088/0967-3334/25/2/002, PubMed 15132308
  2. Mirtaheri P, Omtveit T, Klotzbuecher T, Grimnes S, Martinsen OG, Tønnessen TI (2004)
    Miniaturization of a biomedical gas sensor
    Physiol Meas, 25 (6), 1511-22
    DOI 10.1088/0967-3334/25/6/015, PubMed 15712728

Publications 2003

  1. Barbosa PR, Barbosa-Filho J, de Sá CA, Barbosa EC, Nadal J (2003)
    Reduction of electromyographic noise in the signal-averaged electrocardiogram by spectral decomposition
    IEEE Trans Biomed Eng, 50 (1), 114-7
    DOI 10.1109/TBME.2002.807317, PubMed 12617532

Publications 2001

  1. Martinsen OG, Grimnes S (2001)
    Facts and myths about electrical measurement of stratum corneum hydration state
    Dermatology, 202 (2), 87-9
    DOI 10.1159/000051604, PubMed 11306826
  2. Martinsen OG, Grimnes S, Mørkrid L, Hareide M (2001)
    Line patterns in the mosaic electrical properties of human skin--a cross-correlation study
    IEEE Trans Biomed Eng, 48 (6), 731-4
    DOI 10.1109/10.923791, PubMed 11396602

Publications 2000

  1. Elle OJ, Samset E, Bakken A, Hogetveit JO, Fosse E (2000)
    Head-tracking in scopic surgical procedures using Robot-held camera and head-mounted stereoscopic display
    INT CONGR SER, 1214, 121-127
  2. Martinsen OG, Grimnes S, Mirtaheri P (2000)
    Non-invasive measurements of post-mortem changes in dielectric properties of haddock muscle - a pilot study
    J. Food Eng., 43 (3), 189-192
  3. Medbø S, Beisvag V, Tølløfsrud PA, Ellingsen Ø, Wright MS (2000)
    Attenuated endothelin-1 mRNA expression with endothelin-1 receptor blockade during hypoxaemia and reoxygenation in newborn piglets
    Acta Paediatr, 89 (6), 698-702
    DOI 10.1080/080352500750044034, PubMed 29265524

 
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