• Accurate dialysis dose evaluation and extrapolation algorithms during online optical dialysis monitoringFridolin, Ivo; Karai, Deniss; Kostin, Sergei; Ubar, Raimund-JohannesIEEE transactions on biomedical engineering2013 / p. 1371-1377 : ill https://doi.org/10.1109/TBME.2012.2234458 https://www.scopus.com/sourceid/16318 https://www.scopus.com/record/display.uri?eid=2-s2.0-84876779545&origin=resultslist&sort=plf-f&src=s&sot=b&sdt=b&s=DOI%2810.1109%2FTBME.2012.2234458%29 https://jcr.clarivate.com/jcr-jp/journal-profile?journal=IEEE%20T%20BIO-MED%20ENG&year=2013 https://www.webofscience.com/wos/woscc/full-record/WOS:000318160500024
• Activity classification for real-time wearable systems : effect of window length, sampling frequency and number of features on classifier performanceAllik, Ardo; Pilt, Kristjan; Karai, Deniss; Fridolin, Ivo; Leier, Mairo; Jervan, Gert2016 IEEE EMBS Conference on Biomedical Engineering and Sciences (IECBES) : Kuala Lumpur, 4-8 December 20162016 / p. 460-464 : ill https://doi.org/10.1109/IECBES.2016.7843493
• Analyse of T-wave morphology for discrimination of life threatening arrhytmias - preliminary studyOlli, Ülle; Karai, Deniss; Lass, Jaanus; Kaik, Jüri; Vainu, MeelisMedicon 2001 : IX Mediterranean Conference on Medical and Biological Engineering and Computing : June 12-15, 2001, Pula, Croatia : [proceedings]. Part I2001 / p. 344-347
• Application of novel QT interval correction and QT/RR assessment models to ECG 24-hour recordings in cardiac patientsVeski, Kristi; Karai, Deniss; Pilt, Kristjan; Meigas, Kalju; Kaik, JüriEstonian journal of engineering2010 / 1, p. 107-120 : ill
• Arterial hypertension, left ventricular geometry and QT dispersion in a middle-aged Estonian female populationShipilova, Tatjana; Pšenitšnikov, Igor; Kaik, Jüri; Volozh, Olga; Abina, Jelena; Kalev, Maie; Lass, Jaanus; Karai, DenissBlood pressure2003 / 1, p. 12-18
• Arterial pulse waveform dependence on applied pressurePilt, Kristjan; Meigas, Kalju; Viigimaa, Margus; Kaik, Jüri; Kattai, Rain; Karai, DenissBEC 2010 : 2010 12th Biennial Baltic Electronics Conference : proceedings of the 12th Biennial Baltic Electronics Conference : Tallinn University of Technology, October 4-6, 2010, Tallinn, Estonia2010 / p. 277-280 : ill
• Association between ventricular repolarization and main cardiovascular risk factorsPšenitšnikov, Igor; Šipilova, Tatjana; Karai, Deniss; Riipulk, Jevgeni; Veski, Kristi; Pilt, Kristjan; Kaik, JüriScandinavian cardiovascular journal : SCJ2011 / p. 33-40 : ill
• Blood groups, blood pressure and left ventricular geometry in womenShipilova, Tatjana; Pšenitšnikov, Igor; Volozh, Olga; Abina, Jelena; Kalev, Maie; Kaik, Jüri; Lass, Jaanus; Karai, DenissJournal of hypertension2002 / p. 20
• Calculation of pulse wave transit time and its correlation with blood pressure using different physiological signals [Electronic resource]Meigas, Kalju; Lass, Jaanus; Kattai, Rain; Karai, Deniss; Kaik, JüriProceedings of World Congress on Medical Physics and Biomedical Engineering, Sidney, Australia, 20032003 / [4] p. [CD-ROM]
• Classification algorithm improvement for physical activity recognition in maritime environmentsAllik, Ardo; Pilt, Kristjan; Karai, Deniss; Fridolin, Ivo; Leier, Mairo; Jervan, GertWorld Congress on Medical Physics and Biomedical Engineering 2018 : June 3–8, 2018, Prague, Czech Republic (Vol. 3)2019 / p. 13-17 https://doi.org/10.1007/978-981-10-9023-3_3 https://www.scopus.com/sourceid/19400157277 https://www.scopus.com/record/display.uri?eid=2-s2.0-85048305561&origin=inward&txGid=118cbafaf7c49f4cb960c7fbba7af5a9 https://www.webofscience.com/wos/woscc/full-record/WOS:000449744300003
• Comparison of different ventricular repolarisation phases from ECG for identifying patents with increased risk of sudden cardiac deathLass, Jaanus; Kaik, Jüri; Karai, Deniss; Hinrikus, Hiie; Vainu, MeelisIV International Workshop on Biosignal Interpretation : BSI2002, Como, Italy, 24th-26th June, 2002 : proceedings2002 / p. 393-396 : ill
• Comparison of predictive equations for basal metabolic rateAllik, Ardo; Mägi, Siiri; Pilt, Kristjan; Karai, Deniss; Fridolin, Ivo; Leier, Mairo; Jervan, GertWireless Mobile Communication and Healthcare : 7th International Conference, MobiHealth 2017, Vienna, Austria, November 14–15, 2017 : proceedings2018 / p. 261-264 : ill https://doi.org/10.1007/978-3-319-98551-0 https://www.scopus.com/sourceid/21100220348 https://www.scopus.com/record/display.uri?eid=2-s2.0-85053112816&origin=inward&txGid=40923c48e1e173e3a44b1b096b899965 https://www.webofscience.com/wos/woscc/full-record/WOS:000481867100030
• Continuous blood pressure monitoring during exercise using pulse wave transit time measurementLass, Jaanus; Meigas, Kalju; Karai, Deniss; Kattai, Rain; Kaik, Jüri; Rossmann, MartProceedings of the 26th Annual International Conference of the IEEE EMBC : San Francisco, CA, USA, September 1-5, 20042004 / p. 2239-2242 : ill
• Development of a measurement system for estimation of local peripheral arterial stiffness parametersPilt, Kristjan; Karai, Deniss; Fridolin, Ivo2024 19th Biennial Baltic Electronics Conference (BEC)2024 / p. 1-5 https://doi.org/10.1109/BEC61458.2024.10737944 https://www.scopus.com/record/display.uri?eid=2-s2.0-85210563559&origin=resultslist&sort=plf-f&src=s&sot=b&sdt=b&s=DOI%2810.1109%2FBEC61458.2024.10737944%29&sessionSearchId=c203b7be808083b37175427746dc4ee5 https://www.scopus.com/sourceid/21100228125 https://www.webofscience.com/wos/woscc/full-record/WOS:001411745600007
• Device for continuous blood pressure measurementsMeigas, Kalju; Lass, Jaanus; Karai, Deniss; Kattai, Rain; Kaik, JüriNBC'05 UMEA : 13th Nordic Baltic Conference on Biomedical Engineering and Medical Physics : June 13th-17th, 2005, Umea, Sweden2005 / p. 164-165 : ill
• Effect of microwave radiation on human EEG at two different levels of exposureSuhhova, Anna; Bachmann, Maie; Karai, Deniss; Lass, Jaanus; Hinrikus, HiieBioelectromagnetics2012 / p. 264 - 274 : ill https://doi.org/10.1002/bem.21772 https://www.scopus.com/sourceid/14839 https://www.scopus.com/record/display.uri?eid=2-s2.0-84876071220&origin=resultslist&sort=plf-f&src=s&sot=b&sdt=b&s=DOI%2810.1002%2Fbem.21772%29&sessionSearchId=47e771afcc769678348f9a5b62e06fdd&relpos=0 https://jcr.clarivate.com/jcr-jp/journal-profile?journal=BIOELECTROMAGNETICS&year=2013 https://www.webofscience.com/wos/woscc/full-record/WOS:000317356000002
• Electroencephalography as an objective indicator of stressGavriljuk, Marietta; Uudeberg, Tuuli; Pilt, Kristjan; Karai, Deniss; Fridolin, Ivo; Bachmann, Maie19th Nordic-Baltic Conference on Biomedical Engineering and Medical Physics : Proceedings of NBC 2023, June 12–14, 2023, Liepaja, Latvia2023 / p. 221–226 https://doi.org/10.1007/978-3-031-37132-5_28 https://www.scopus.com/sourceid/19400157277 https://www.scopus.com/record/display.uri?eid=2-s2.0-85176780763&origin=inward&txGid=8f0220ead611b15b1656dab74b308f01
• Fall detection and activity recognition system for usage in smart work-wear [Online resource]Leier, Mairo; Jervan, Gert; Allik, Ardo; Pilt, Kristjan; Karai, Deniss; Fridolin, IvoBEC 2018 : 2018 16th Biennial Baltic Electronics Conference (BEC) : proceedings of the 16th Biennial Baltic Electronics Conference, October 8-10, 20182018 / 4 p.: ill https://doi.org/10.1109/BEC.2018.8600959
• Health risks to computer-workers in various indoor facilities [Electronic resource]Tint, Piia; Toomeoja, K.; Tuulik, Viiu; Karai, Deniss; Meigas, KaljuRiga Technical University 54th International Scientific Conference Scientific Conference on Economics and Entrepreneurship (SCEE’2013) : proceedings2013 / [2] p [CD-ROM]
• Hemodialysis optical monitoring toward greener technology : a potential for water saving dialysis treatmentLeis, Liisi; Adoberg, Annika; Paats, Joosep; Holmar, Jana; Arund, Jürgen; Karai, Deniss; Luman, Merike; Pilt, Kristjan; Taklaja, Paul; Tanner, Risto; Fridolin, Ivo19th Nordic-Baltic Conference on Biomedical Engineering and Medical Physics : Proceedings of NBC 2023, June 12–14, 2023, Liepaja, Latvia2023 / p. 162 - 171 https://doi.org/10.1007/978-3-031-37132-5_21 https://www.scopus.com/sourceid/19400157277 https://www.scopus.com/record/display.uri?eid=2-s2.0-85176726998&origin=inward&txGid=961d39a226262a58552ab446b54907ac
• Influence of acute mental stress on the forehead photoplethysmographic signal waveformPilt, Kristjan; Karai, Deniss; Bachmann, Maie; Gavriljuk, Marietta; Fridolin, Ivo19th Nordic-Baltic conference on biomedical engineering and medical physics : proceedings of NBC 2023, June 12-14, 2023, Liepaja, Latvia2023 / p. 181 - 188 https://doi.org/10.1007/978-3-031-37132-5_23 https://www.scopus.com/sourceid/19400157277 https://www.scopus.com/record/display.uri?eid=2-s2.0-85176761168&origin=inward&txGid=2b3bd061e42f530ab41f90c4b9a3a4fc
• Influence of gender on the QT interval variability and duration in different wake–sleep stages in non-sleep apneic individuals : analysis of polysomnographic recordingsViigimäe, Moonika; Karai, Deniss; Pilt, Kristjan; Polo, Olli; Huhtala, Heini; Meigas, Kalju; Kaik, JüriJournal of electrocardiology2017 / p. 444-449 : ill https://doi.org/10.1016/j.jelectrocard.2017.03.012 https://www.scopus.com/sourceid/23855 https://www.scopus.com/record/display.uri?eid=2-s2.0-85016727914&origin=inward&txGid=14f30aff045a4802b6b3326f5f97bbe8 https://jcr.clarivate.com/jcr-jp/journal-profile?journal=J%20ELECTROCARDIOL&year=2017 https://www.webofscience.com/wos/woscc/full-record/WOS:000405059500009
• Influence of low-level microwave radiation on nerve pulse conduction velocityHinrikus, Hiie; Lass, Jaanus; Karai, Deniss; Kalda, Jaak; Tomson, Ruth; Tuulik, ViiuBiological Effects of EMFs 3rd International Workshop : Kos, Greece, 4-8 October 2004 : proceedings. Volume 22004 / p. 641-648 : ill
• Influence of mental stress on the arterial stiffness parameters detected from photoplethysmographic signal waveformPilt, Kristjan; Karai, Deniss; Bachmann, Maie; Gavriljuk, Marietta; Allik, Ardo; Uudeberg, Tuuli2022 18th Biennial Baltic Electronics Conference (BEC)2022 / 4 p https://doi.org/10.1109/BEC56180.2022.9935609
• Investigation of photoplethysmographic signal augmentation index estimation differences between fingersPilt, Kristjan; Silluta, Sandra; Kööts, Kristina; Karai, Deniss; Meigas, Kalju; Viigimaa, MargusEMBEC & NBC 2017 : joint conference of the European Medical and Biological Engineering Conference (EMBEC) and the Nordic-Baltic Conference on Biomedical Engineering and Medical Physics (NBC), Tampere, Finland, June 20172018 / p. 819-822 : ill https://doi.org/10.1007/978-981-10-5122-7_205 https://www.scopus.com/sourceid/19400157277 https://www.scopus.com/record/display.uri?eid=2-s2.0-85021767479&origin=inward&txGid=b06b608f7a5c290b5630b9721f4d52c1 https://www.webofscience.com/wos/woscc/full-record/WOS:000449778900205
• Low-level microwave radiation effect on nerve pulse conduction velocityHinrikus, Hiie; Tomson, Ruth; Lass, Jaanus; Karai, Deniss; Kalda, Jaak; Tuulik, ViiuThe environmentalist2005 / 2/4, p. 157-163 https://www.researchgate.net/publication/227333897_Low-Level_Microwave_Radiation_Effect_on_Nerve_Pulse_Conduction_Velocity
• Method and device for beat-to-beat blood pressure measurements [Electronic resource]Meigas, Kalju; Lass, Jaanus; Karai, Deniss; Kattai, Rain; Kaik, JüriIFMBE proceedings2005 / [6] p. [CD-ROM]
• Method of optical self-mixing for pulse wave transit time measurement in comparison with other methods and correlation with blood pressureMeigas, Kalju; Lass, Jaanus; Kattai, Rain; Karai, Deniss; Kaik, JüriCoherence Domain Optical Methods and Optical Coherence Tomography in Biomedicine VIII : 26-28 January 2004, San Jose, California, USA2004 / p. 444-453 : ill https://www.spiedigitallibrary.org/conference-proceedings-of-spie/5316/1/Method-of-optical-self-mixing-for-pulse-wave-transit-time/10.1117/12.524273.full#_=_
• Monitoring blood pressure from pulse wave transit timeTepner, Ingrid; Lass, Jaanus; Karai, Deniss; Hinrikus, Hiie; Meigas, KaljuIV International Workshop on Biosignal Interpretation : BSI2002, Como, Italy, 24th-26th June, 2002 : proceedings2002 / p. 239-242 : ill
• On-line monitoring of dialysis adequacy using diasens optical sensor: accurate Kt/V estimation by smoothing algorithmsTalisainen, Aleksei; Kostin, Sergei; Karai, Deniss; Fridolin, Ivo; Ubar, Raimund-JohannesBEC 2010 : 2010 12th Biennial Baltic Electronics Conference : proceedings of the 12th Biennial Baltic Electronics Conference : Tallinn University of Technology, October 4-6, 2010, Tallinn, Estonia2010 / p. 273-276 : ill
• Optical and electrical methods for pulse wave transit time measurement and its correlation with arterial blood pressureLass, Jaanus; Meigas, Kalju; Kattai, Rain; Karai, Deniss; Kaik, Jüri; Rossmann, MartProceedings of the Estonian Academy of Sciences. Engineering2004 / 2, p. 123-136 : ill
• Optimization of physical activity recognition for real-time wearable systems : effect of window length, sampling frequency and number of featuresAllik, Ardo; Pilt, Kristjan; Karai, Deniss; Fridolin, Ivo; Leier, Mairo; Jervan, GertApplied sciences2019 / art. 4833, 14 p. : ill https://doi.org/10.3390/app9224833 https://www.scopus.com/sourceid/21100829268 https://www.scopus.com/record/display.uri?eid=2-s2.0-85075236405&origin=inward&txGid=dc065613b0f19b3c614d9e6fba97737b https://jcr.clarivate.com/jcr-jp/journal-profile?journal=APPL%20SCI-BASEL&year=2022 https://www.webofscience.com/wos/woscc/full-record/WOS:000502570800110
• Prevention of physiological and psychological stress at computer-equipped workplacesTint, Piia; Meigas, Kalju; Tuulik, Viiu; Pille, Viive; Oha, Kristel; Reinhold, Karin; Karai, Deniss; Tuulik-Leisi, Varje-Riin; Lauri, MariliisHuman factors : sustainable life and mobility : proceedings of the Human Factors and Ergonomics Society Europe Chapter 2013 Annual Conference2014 / p. 229-240 : ill
• Pulse wave parameters as indicators of the state of the arteriesHinrikus, Hiie; Lass, Jaanus; Karai, Deniss; Tepner, IngridProceedings of 2nd European Medical & Biological Engineering Conference EMBEC'02. 12002 / p. 642-643
• QT dispersion in relation to left ventricular geometry and hypertension in a population studyPšenitšnikov, Igor; Shipilova, Tatjana; Kaik, Jüri; Volozh, Olga; Abina, Jelena; Lass, Jaanus; Karai, DenissScandinavian cardiovascular journal : SCJ2003 / 2, p. 87-90
• QT interval variability index and QT interval duration during different sleep stages in patients with obstructive sleep apneaViigimäe, Moonika; Karai, Deniss; Pilt, Kristjan; Pirn, Peeter; Huhtala, Heini; Polo, Olli; Meigas, Kalju; Kaik, JüriSleep medicine2017 / p. 160-167 : ill https://doi.org/10.1016/j.sleep.2017.06.026 https://www.scopus.com/sourceid/19834 https://www.scopus.com/record/display.uri?eid=2-s2.0-85028908741&origin=inward&txGid=6ceb186157a4160a67a133987dc3fafd https://jcr.clarivate.com/jcr-jp/journal-profile?journal=SLEEP%20MED&year=2017 https://www.webofscience.com/wos/woscc/full-record/WOS:000410792900027
• QT interval variability index and QT interval duration in different sleep stages : analysis of polysomnographic recordings in nonapneic male patientsViigimäe, Moonika; Karai, Deniss; Pirn, Peeter; Pilt, Kristjan; Meigas, Kalju; Kaik, JüriBioMed Research International2015 / art. 963028 https://doi.org/10.1155/2015/963028 https://www.scopus.com/sourceid/21100230018 https://www.scopus.com/record/display.uri?eid=2-s2.0-84950112984&origin=inward&txGid=e57af372be46aef1f3aeccb84eb3e8bf https://jcr.clarivate.com/jcr-jp/journal-profile?journal=BIOMED%20RES%20INT&year=2015 https://www.webofscience.com/wos/woscc/full-record/WOS:000366533600001
• Second derivative photoplethysmographic signal analysis of differences between fingers in healthy subjects [Online resource]Pilt, Kristjan; Silluta, Sandra; Palmar, Merlin; Karai, Deniss; Meigas, Kalju; Viigimaa, MargusBEC 2018 : 2018 16th Biennial Baltic Electronics Conference (BEC) : proceedings of the 16th Biennial Baltic Electronics Conference, October 8-10, 20182019 / 4 p.: ill https://doi.org/10.1109/BEC.2018.8600985
• Smart photoplethysmographic sensor for pulse wave registration at different vascular depthsLeier, Mairo; Pilt, Kristjan; Karai, Deniss; Jervan, GertConference proceedings : 37th Annual International Conference of the IEEE Engineering in Medicine and Biology Society : Milan, Italy, August 25-29 20152015 / p. 1849-1852 : ill https://doi.org/10.1109/EMBC.2015.7318741 https://www.scopus.com/sourceid/34202 https://www.scopus.com/record/display.uri?eid=2-s2.0-84953301745&origin=inward&txGid=311ab855729a33dab837ba01bfc110f5 https://www.webofscience.com/wos/woscc/full-record/WOS:000371717202035
• Stability of the relationship between pulse wave delay and arterial blood pressureHinrikus, Hiie; Tepner, Ingrid; Lass, Jaanus; Karai, Deniss12th Nordic Baltic Conference on Biomedical Engineering and Medical Physics : 12NBC 2002, June 18th-22nd, Reykjavik, Iceland2002 / p. 22-23
• The computer workers' working conditions influencing the health in modern buildingsTint, Piia; Karai, Deniss; Oha, Kristel; Koppel, Tarmo; Tuulik-Leisi, Varje-Riin; Tuulik, Viiu; Meigas, KaljuIntelligent Technologies in Logistics and Mechatronics Systems ITELMS'2013 : proceedings of the 8th international conference2013 / p. 247-253 : ill
• The working conditions of office-workers in modern buildingsTint, Piia; Karai, Deniss; Oha, Kristel; Koppel, Tarmo; Tuulik-Leisi, Varje-Riin; Tuulik, Viiu; Meigas, KaljuHuman factors : sustainable life and mobility : October 16-18, 2013, Torino, Italy : programme, abstracts book2013 / p. [64]
• 24-hour heart rate profile in assessment of target organs in women with arterial hypertensionŠipilova, Tatjana; Pšenitšnikov, Igor; Karai, Deniss; Ripulk, E,; Kaik, JüriKardiologiya2013 / p. 45-50 https://pubmed.ncbi.nlm.nih.gov/23548350/ https://www.scopus.com/sourceid/23904 https://www.scopus.com/record/display.uri?eid=2-s2.0-84877035074&origin=resultslist&sort=plf-f&src=s&sot=b&sdt=cl&s=AUTH%28%22Shipilova%2C+T%22%29&sessionSearchId=c47ea1a2e3bf9eff508edc623fd8b2f0
• Ventricular repolarization evaluation from surface ECG for identification of the patients with increased myocardial electrical instabilityLass, Jaanus; Kaik, Jüri; Karai, Deniss; Vainu, Meelis2001 Conference Proceedings of the 23rd Annual International Conference of theIEEE Engineering in Medicine and Biology Society : 25-28 October 2001, Istanbul, Turkey. Vol. 12001 / p. 390-393 : ill https://ieeexplore.ieee.org/document/1018943
• Vähiuurimisaparaat säästab haige tervist : innovaatikamess esitles mittekiirgavat radiomeetrit : [väljapanekuid tutvustavad Hiie Hinrikus, Deniss Karai ja Arved Vain]Hinrikus, Hiie; Karai, Deniss; Vain, Arved; Väre, HansEesti Päevaleht1999 / 9. apr., lk. 5