PUBLICATIONS

A. Articles in Refereed Journals

A65. Mäkelä K-M, Seppälä I, Hernesniemi JA, Lyytikäinen L-P, Oksala N, Kleber ME, Scharnagl H, Grammer TB, Baumert J, Thorand B, Jula A, Hutri-Kähönen N, Juonala M, Laitinen, T, Laaksonen R, Karhunen P, Nikus KC, Nieminen T, Viik J, Klopp N, Illig T, Kettunen J, Ahotupa M, Viikari JSA, Kähönen M, Raitakari OT, Karakas M, Koenig W, Boehm BO, Winkelmann BR, März W and Lehtimäki T: Genome-Wide Association Study Pinpoints a New Functional ApoB Variant Influencing Oxidized LDL Levels but Not Cardiovascular Events - AtheroRemo Consortium. Circulation: Cardiovascular Genetics [Accepted].
A64. Karinen H, Uusitalo A, Vähä-Ypyä H, Kähönen M, Peltonen JE, Stein PK, Viik J and Tikkanen HO. Heart Rate Variability Changes at 2400m Altitude Predicts Acute Mountain Sickness on Further Ascent at 3000-4300m Altitudes. Frontiers in Physiology – Clinical and Translational Physiology 2012;3:336.
A63. Gracia J, Seppä VP, Viik J and Hyttinen J. Multilead Measurement System for the Time-Domain Analysis of Bioimpedance Magnitude. IEEE Transactions on Biomedical Engineering 2012;59(8);2273-2280.
A62. Alametsä J, Palomäki A and Viik J: Carotid and Radial Pulse Feature Analysis with EMFi Sensor. Finnish Journal of eHealth and eWelfare 2012;4(2):80-88.
A61. Kenttä T, Viik J, Karsikas M, Seppänen T, Nieminen T, Lehtimäki T, Nikus K, Lehtinen R, Kähönen M and Huikuri H: Post-Exercise Recovery of the Spatial QRS/T Angle as a Predictor of Sudden Cardiac Death. Heart Rhythm 2012;9(7):1083-1089.
A60. Koskela J, Kähönen M, Nieminen T, Lehtinen R, Viik J, Nikus K, Niemelä K, Kööbi T, Tobin M, Samani N, Turjanmaa V, Pörsti I and Lehtimäki T: Allelic Variant of NOS1AP Effects on Cardiac Alternans of Repolarization During Exercise Testing. The Scandinavian Journal of Clinical & Laboratory Investigation 2012;72(2):100-107.
A59. Raitoharju E, Levula M, Kuukasjärvi P, Laurikka J, Nikus K, Huovila AP, Oksala N, Laaksonen R, Karhunen P, Viik J, Lehtinen R, Tarkka M, Kähönen M and Lehtimäki T. Common Variation in the ADAM8 Gene Affects Serum sADAM8 Concentrations and the Risk of Myocardial Infarction in Two Independent Cohorts. Atherosclerosis 2011;218(1):127-133.
A58. Alametsä J, Palomäki A and Viik J: Short and Longer Term Repeatability of Ballistocardiography in Sitting Position with EMFi sensor. Medical & Biological Engineering & Computing 2011;49(8):881-889.
A57. Kenttä T, Karsikas M, Junttila J, Perkiömäki J, Seppänen T, Kiviniemi A, Nieminen T, Lehtimäki T, Nikus K, Lehtinen R, Viik J, Kähönen M and Huikuri H: QRS-T Morphology Measured from Exercise Electrocardiogram as a Predictor of Cardiac Mortality. Europace 2011;13(5):701-707.
A56. Leino J, Minkkinen M, Nieminen T, Verrier RL, Lehtimäki T, Viik J, Lehtinen R, Nikus K, Kööbi T, Turjanmaa V and Kähönen M: Importance of Regional Specificity of T-wave Alternans in Assessing Risk for Cardiovascular Mortality and Sudden Cardiac Death During Routine Exercise Testing. Heart Rhythm 2011;8(3):385-390.
A55. Seppä V-P, Hyttinen J and Viik J: A Method for Suppressing Cardiogenic Oscillations in Impedance Pneumography. Physiological Measurement 2011;32(3):337-345.
A54. Hernesniemi J, Anttila K, Nieminen T, Kähönen M, Mononen N, Nikus K, Turjanmaa V, Viik J, Lehtinen R and Lehtimäki T: I L-18 Gene Polymorphism, Cardiovascular Mortality and Coronary Artery Disease. European Journal of Clinical Investigation 2010;40(11):994-1001.
A53. Seppä V-P, Viik J and Hyttinen J: Assessment of Pulmonary Flow Using Impedance Pneumography. IEEE Transaction on Biomedical Engineering 2010;57(9):2277-85.
A52. Puurtinen M, Väisänen J, Viik J and Hyttinen J: New Precordial Bipolar Electrocardiographic Leads for Detecting Left Ventricular Hypertrophy. Journal of Electrocardiology 2010;43(6):654-9.
A51. Puurtinen M, Nieminen T, Lehtinen R, Nikus K, Lehtimäki T, Kähönen M and Viik J: Value of V4R and CM5 for Detection of Coronary Artery Disease in Exercise Test. Clinical Physiology and Functional Imaging 2010;30(4):308-312.
A50. Nieminen T, Verrier RL, Nikus K, Viik J, Lehtinen R, Lehtimäki T, Kaiser W and Kähönen M: The Pattern of Crescendo TWA May Disclose Underlying Cardiac Pathology. Journal of Electrocardiology 2010;43(5):449-51.
A49. Nieminen T, Verrier RL, Leino J, Nikus K, Lehtinen R, Lehtimäki T, Kööbi T, Turjanmaa V, Viik J and Kähönen M: Atrioventricular Conduction and Cardiovascular Mortality: Assessment of Recovery PR Interval Is Superior to Pre-Exercise Measurement. Heart Rhythm 2010;7(6):796–801.
A48. Svart K, Lehtinen R, Nieminen T, Nikus K, Lehtimäki T, Kööbi T, Niemelä K, Niemi M, Turjanmaa V, Kähönen M and Viik J: Exercise Electrocardiography Detection of Coronary Artery Disease by ST-segment Depression/Heart Rate Hysteresis in Women: The Finnish Cardiovascular Study. International Journal of Cardiology 2010;140(2):182-8.
A47. Leino J, Minkkinen M, Nieminen T, Verrier RL, Lehtimäki T, Viik J, Lehtinen R, Nikus K, Kööbi T, Turjanmaa V and Kähönen M: Combined Assessment of Heart Rate Recovery and T-Wave Alternans during Routine Exercise Testing Improves Prediction of Total and Cardiovascular Mortality: The Finnish Cardiovascular Study. Heart Rhythm 2009;6(12):1765-71.
A46. Alametsä J, Värri A, Viik J, Hyttinen J, and Palomäki A: Ballistocardiographic Studies with Acceleration and EMFi Sensors. Medical Engineering and Physics 2009;31(9):1154-65.
A45. Leino J, Virtanen M, Kähönen M, Nikus K, Lehtimäki T, Kööbi T, Lehtinen R, Turjanmaa V, Viik J and Nieminen T: Exercise-test-related Heart Rate Variability and Mortality. The Finnish Cardiovascular Study. International Journal of Cardiology 2010;144(1):154-155.
A44. Minkkinen M, Kähönen M, Viik J, Nikus K, Lehtimäki T, Lehtinen R, Kööbi T, Turjanmaa V, Kaiser W, Verrier RL, Nieminen T. Letter to editor. The Journal of Cardiovascular Electrophysiology 2009:20(6):E64.
A43. Slawnych MP, Nieminen T, Kähönen M, Kavanagh KM, Lehtimäki T, Ramadan D, Viik J, Aggarwal S, Lehtinen R, Ellis L, Nikus K and Exner DV: Post-exercise Assessment of Cardiac Repolarization Alternans in Patients with Coronary Artery Disease Using the Modified Moving Average Method. J Am Coll Cardiol. 2009;53(13):1130-7.
A42. Minkkinen M, Nieminen T, Verrier RL, Leino J, Lehtimäki T, Viik J, Lehtinen R, Nikus K, Kööbi T, Turjanmaa V, Kähönen M. Impaired Exercise Capacity Predicts Sudden Cardiac Death in a Low-risk Population: Enhanced Specificity with Heightened T-wave Alternans. Annals of Medicine. 2009;41(5):380-9.
A41. Puurtinen M, Viik J and Hyttinen J: Best Electrode Locations for a Small Bipolar ECG Device - Signal Strength Analysis of Clinical Data. Annals of Biomedical Engineering 2009;37(2):331-6.
A40. Puurtinen M, Takano N, Malmivuo J, Viik J and Hyttinen J: Estimating the Measuring Sensitivity of Unipolar and Bipolar ECG with Lead Field Method and FDM Models. Analysis of Clinical Data. Computer Methods and Programs in Biomedicine 2009;94(2):161-7.
A39. Svart K, Lehtinen R, Nieminen T, Nikus K, Lehtimäki T, Kööbi T, Niemelä K, Niemi M, Turjanmaa V, Kähönen M and Viik J: Exercise Electrocardiography Detection of Coronary Artery Disease by ST-segment Depression/Heart Rate Hysteresis in Women: The Finnish Cardiovascular Study. International Journal of Cardiology, 2008; XXX Epub 2008 Dec.
A38. Minkkinen M, Kähönen M, Viik J, Nikus K, Lehtimäki T, Lehtinen R, Kööbi T, Turjanmaa V, Kaiser W, Verrier RL and Nieminen T: Enhanced Predictive Power of Quantitative TWA during Routine Exercise Testing in the Finnish Cardiovascular Study. The Journal of Cardiovascular Electrophysiology, 2009;20(4):408-415.
A37. Alametsä J, Viik J, Alakare J, Värri A and Palomäki A: Ballistocardiography in Sitting and Horizontal Positions. Physiological Measurement, 2008;29(9):1071-87.
A36. Orsila R, Virtanen M, Viik J, Luukkala T, Tarvainen M, Karjalainen P, Savinainen M and Nygård C-H: Perceived Mental Stress and Reactions in Heart Rate Variability - a Pilot Study Among Employees of an Electronics Company. The International Journal of Occupational Safety and Ergonomics, 2008;14(3):259-268.
A35. Tobin MD, Kähönen M, Braund P, Nieminen T, Hajat C, Tomaszewski M, Viik J, Lehtinen R, Ng GA, MacFarlane PW, Burton PR, Lehtimäki T and Samani NJ: Gender Specific Effects of a Common Genetic Variant in the NOS1 Regulator NOS1AP on Cardiac Repolarization in 3761 Individuals from Two Independent Populations. International Journal of Epidemilogy, 2008;37(5):1132-1141.
A34. Koskela J, Kähönen M, Fan M, Nieminen T, Lehtinen R, Viik J, Nikus K, Niemelä K, Kööbi T, Turjanmaa V, Pörsti I and Lehtimäki T: Effect of Common KCNE1 and SCN5A Ion Channel Gene Variants on T-wave Alternans, a Marker of Cardiac Repolarization, During Clinical Exercise Stress Test: the Finnish Cardiovascular Study. Translational Research, 2008;152(2):49-58.
A33. Nieminen T, Leino J, Maanoja J, Nikus K, Viik J, Lehtimäki T, Kööbi T, Lehtinen R, Niemelä K, Turjanmaa V and Kähönen M: The Prognostic Value of Hemodynamic Parameters in the Recovery Phase of an Exercise Test. The Finnish Cardiovascular Study. Journal of Human Hypertension, 2008;22:537-543.
A32. Koskela J, Laiho J, Kähönen M, Rontu R, Lehtinen R, Viik J, Niemi M, Niemelä K, Kööbi T, Turjanmaa V, Pörsti I, Lehtimäki T and Nieminen T: Potassium Channel KCNH2 K897T Polymorphism and Cardiac Repolarization During Exercise Test. The Finnish Cardiovascular Study. The Scandinavian Journal of Clinical & Laboratory Investigation, 2008;61(5):31-8.
A31. Nieminen T, Lehtimäki T, Viik J, Lehtinen R, Nikus K, Kööbi T, Niemelä K, Turjanmaa V, Kaiser W, Huhtala H, Verrier RL, Huikuri H and Kähönen M. T-wave alternans during exercise testing calculated by the method of ‘modified moving average’. European Heart Journal, 2007;28;2691-2.
A29. Virtanen M, Kähönen M, Nieminen T, Karjalainen P, Tarvainen M, Lehtimäki T, Lehtinen R, Nikus K, Kööbi T, Niemi M, Niemelä K, Turjanmaa V, Malmivuo J and Viik J: Heart Rate Variability Derived from Exercise ECG in the Diagnosis of Coronary Artery Disease. Physiological Measurement, 2007;28(10):1189-1200.
A28. Nieminen T, Lehtimäki T, Viik J, Lehtinen R, Nikus K, Kööbi T, Niemelä K, Turjanmaa V, Kaiser W, Huhtala H, Verrier RL, Huikuri H and Kähönen M: T-wave Alternans Predicts Mortality in a Population Undergoing a Clinically Indicated Exercise Test. European Heart Journal, 2007;28(19):2332-7.
A27. Michou SM, Kähönen M, Lehtimäki T, Nikus K, Viik J, Niemelä K, Kallio J, Lehtinen R, Kööbi T, Turjanmaa V and Nieminen T: Age and Gender Biases in Secondary Prevention of Coronary Heart Disease in a Finnish University Hospital Setting. Clinical Drug Investigation, 2007;27(10):673-81.
A26. Nieminen T, Kähönen M, Nikus K, Kööbi T and Viik J: Heart rate variability is dependent on the level of heart rate. Letter-to-the-Editor concerning the manuscript "Novel Predictor of Prognosis from Exercise Stress Testing: Heart Rate Variability Response to the Exercise Treadmill Test". American Heart Journal 2007;154(1):e13, author reply e15.
A25. Fan M, Kähönen M, Rontu R, Lehtinen R, Viik J, Niemi M, Nieminen T, Niemelä K, Pörsti I, Kööbi T, Turjanmaa V and Lehtimäki T: The p22phox C242T Gene Polymorphism is Associated with a Reduced Risk of Angiographically Verified Coronary Artery Disease in a High-Risk Finnish Caucasian Population. The Finnish Cardiovascular Study. American Heart Journal 2006;152(3):538-542.
A24. Nieminen T, Lehtinen R, Viik J, Lehtimäki T, Niemelä K, Nikus K, Niemi M, Kallio J, Kööbi T, Turjanmaa V and Kähönen M: The Finnish Cardiovascular Study (FINCAVAS): Characterising Patients with High Risk of Cardiovascular Morbidity and Mortality. BMC Cardiovascular Disorders 2006;6(1):9.
A23. Nieminen T, Lehtimäki T, Laiho J, Rontu R, Niemelä K, Kööbi T, Lehtinen R, Viik J, Turjanmaa V and Kähönen M: Effects of Polymorphisms in 1-adrenoceptor and -subunit of G-protein on Heart Rate and Blood Pressure During Exercise Test. The Finnish Cardiovascular Study. Journal of Applied Physiology 2006;100:507-511.
A22. Tanskanen J, Viik J, and Hyttinen J: Independent Component Analysis of Parameterized ECG Signals. Proceedings of Annual International Conference of the IEEE Engineering in Medicine and Biology Society 2006;5704-5707.
A21. Viik, J: Modes of Heart Rate Compensations During Exercise ECG Test. Anatolian Journal of Cardiology 2005;5(4):312-314.
A20. Puurtinen M, Hyttinen J, Viik J, Kauppinen P and Malmivuo J: Estimation of ECG Signal of Closely Separated Bipolar Electrodes Using Thorax Models. Proceedings of Annual International Conference of the IEEE Engineering in Medicine and Biology Society 2004;2:801-804.
A19. Viik, J: Importance of Postexercise ECG. International Journal of Bioelectromagnetism 2003;5(1):88-89.
A18. Lehtinen R, Viik J, Kallio J, Kaiser W, Findeis M, Kööbi T, Niemelä K, Lehtimäki T and Turjanmaa V: Validation of ST/HR Hysteresis in Detection of Coronary Artery Disease Among Exercise Tested Patients Referred for Coronary Angiography. International Journal of Bioelectromagnetism 2003;5(1):25-26.
A17. Kallio J, Lehtinen R, Viik J, Kööbi T, Niemelä K, Lehtimäki T and Turjanmaa V: Exercise Test Database Analysis Software. International Journal of Bioelectromagnetism 2003:5(1);124-126.
A16. Arola T, Hyttinen J, Viik J, Takano N and Malmivuo J: Effect of Ischemia Size on Body Surface Maps by Realistic Volume Conductor Model. International Journal of Bioelectromagnetism 2003;5(1):258-259.
A15. Viik J, Lehtinen R and Malmivuo J: Improved Detection of Coronary Artery Disease in Women Using ST/HR Hysteresis Method. International Journal of Bioelectromagnetism 2002;4(2):289-290.
A14. Viik J, Vänttinen H and Malmivuo J: ECG Variable Cine: Computer Program for Presentation of Temporal Changes of ECG Variables over the Different Number of ECG Leads. Computer Methods and Programs in Biomedicine: 2000;63: 147-155.
A13. Viik J, Lehtinen R and Malmivuo J: Standard ECG Leads in Exercise ECG Diagnosis. International Journal of Bioelectromagnetism 2000;2(1):72-78.
A12. Viik J, Lehtinen R and Malmivuo J: Detection of Coronary Artery Disease Using Maximum Value of ST/HR Hysteresis Over Different Number of Leads. Journal of Electrocardiology 1999;32(Suppl):70-75.
A11. Viik J and Malmivuo J: Biomedical Engineering as a Career Resource: Survey from Tampere University of Technology. International Journal of Engineering Education. 1999;15(4):308-320.
A10. Viik J, Lehtinen R and Malmivuo J: Diagnostic Performances of Individual Electrocardiographic Leads in Detection of Coronary Artery Disease using Traditional or Heart Rate-adjusted ST-segment Analysis. Medical & Biological Engineering & Computing 1999;37(Suppl 1):77-78.
A9. Viik J, Lehtinen R and Malmivuo J: Effect of Number of Electrocardiographic Leads in Detection of Coronary Artery Disease when using Maximum Value of Traditional or Heart Rate-adjusted ST-segment Analysis. Medical & Biological Engineering & Computing 1999;37(Suppl 1):226-227.
A8. Viik J and Malmivuo J: Biomedical Engineering as a Career Resource: Part 1. Employment Situation after Graduation. Medical & Biological Engineering & Computing 1999;37(Suppl 1):138-139.
A7. Viik J and Malmivuo J: Biomedical Engineering as a Career Resource: Part 2. Education and Instruction. Medical & Biological Engineering & Computing 1999;37(Suppl 1):140-141.
A6. Viik J, Lehtinen R, Turjanmaa V, Niemelä K and Malmivuo J: Correct Utilization of Exercise Electrocardiographic Leads in Differentiation of Men with Coronary Artery Disease from Patients with a Low Likelihood of Coronary Artery Disease Using Peak Exercise ST-Segment Depression. The American Journal of Cardiology 1998;81:964-969.
A5. Viik J, Lehtinen R, Turjanmaa V, Niemelä K and Malmivuo J: The Effect of Lead Selection on Traditional and Heart Rate-Adjusted ST Segment Analysis in the Detection of Coronary Artery Disease during Exercise Testing. American Heart Journal 1997;134(3): 488-494.
A4. Hyttinen J, Viik J, Lehtinen R, Plonsey R, Walker S and Malmivuo J: Computer Model Analysis of the Relation of ST-Segment and ST/HR Slope Response to the Constituents of the Ischemic Injury Source. Journal of Electrocardiology 1997;30(3):161-174.
A3. Lehtinen R, Sievänen H, Viik J, Vuori I and Malmivuo J: Reproducibility of the ST-Segment Depression/Heart Rate Analysis of the Exercise Electrocardiographic Test in Asymptomatic Middle-Aged Population. The American Journal of Cardiology 1997;79(10):1414-1416.
A2. Viik J, Hyttinen J, Lehtinen R and Malmivuo J: Synthesized ECG Leads in Detection of Coronary Artery Disease. Medical and Biological Engineering & Computing 1996;34(Suppl 1, Part 2): 47-48.
A1. Lehtinen R, Sievänen H, Viik J, Turjanmaa V, Niemelä K and Malmivuo J: Accurate Detection of Coronary Artery Disease by Integrated Analysis of the ST-Segment Depression/Heart Rate Patterns During the Exercise and Recovery Phases of the Exercise Electrocardiography Test. The American Journal of Cardiology 1996;78(9):1002-1006.
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B. Articles in Proceedings with Referee System

B1. Nieminen T, Lehtimäki T, Viik J, Lehtinen R, Nikus K,Kööbi T, Niemelä K, Turjanmaa V, Kaiser W, Huhtala H, Huikuri H and Kähönen M: T-Wave Alternans Predicts Mortality in a Population Undergoing a Clinically Indicated Exercise Test. Heart Rhythm 2007, Denver, USA. 9-12 May, 2007.
B2. Savinainen M, Nygård C-H, Jääskeläinen M, Orsila R, Hyttinen J and Viik J: Measuring submaximal and maximal aerobic capacity in work site health promotion. Proceedings IEA 2006 10-14 July. 16th World Congress on Ergonomics, 2006. Maastricht, the Netherlands.
B3. Kallio J, Lehtinen R, Turjanmaa V, Viik J and Malmivuo J: Software for Acquisition of Exercise Test Database. Computers in Cardiology 2001:565-568.
B4. Viik J, Hyttinen J, Lehtinen R and Malmivuo J: Improving Ischemia Diagnosis with Synthesized ECG Leads. Computers in Cardiology 1995;713-715.
B5. Viik J, Lehtinen R and Malmivuo J: Capability of the Single ECG Leads of the 12-lead System to Discriminate Patients with CAD and without CAD - ROC-analysis Approach. In: A. van Oosterom, T.F. Oostendorp and G.J.H. Uijen (eds.): Building Bridges in Electrocardiology, Proceedings of the XXIInd International Congress on Electrocardiology, Nijmegen, The Netherlands, 25-29 June, 1995, pp 234-235, 1995.
B6. Hyttinen J, Viik J, Eskola H and Malmivuo J: Optimization and Comparison of Derived Frank VECG Lead Systems Employing an Accurate Thorax Model. Computers in Cardiology 1995;717-720.
B7. Hyttinen J, Viik J and Malmivuo J: Simulated ST Segment Potentials Generated in Single and Multivessel Coronary Artery Disease. Computers in Cardiology 1995;385-388.
B8. Hyttinen J, Viik J, Lehtinen R, Plonsey R, Walker S and Malmivuo J: ST/HR Slope in Multivessel Coronary Artery Disease: ST/HR Slopes Generated by Simulated Injury Sources. In: A. van Oosterom, T.F. Oostendorp, and G.J.H. Uijen (eds.): Building Bridges in Electrocardiology, Proceedings of the XXIInd International Congress on Electrocardiology Nijmegen, The Netherlands, 25-29 June 1995, pp 158-159, 1995.
B2. Lehtinen R, Viik J, Uusitalo A and Malmivuo J: Improved Detection of Coronary Artery Disease by Utilizing the Recovery Phase of the Exercise ECG Test. In: A. van Oosterom, T.F. Oostendorp, and G.J.H. Uijen (eds.): Building Bridges in Electrocardiology, Proceedings of the XXIInd International Congress on Electrocardiology Nijmegen, The Netherlands, 25-29 June 1995, pp 52-53, 1995.
B1. Hyttinen J, Eskola H, Viik J, Sievänen H and Malmivuo J: Optimization of ECG-Leads with High Regional Aimed Sensitivity for Detection of Ischemic Injury Currents. Medical & Biomedical Engineering & Computing 1991;29(Suppl): 448.
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C. Articles in Proceedings

C1. Heart Rhythm, 2009, Minkkinen ja Leino 2 juttua!
C2. Tanskanen J, Viik J, and Hyttinen J: Independent Component Analysis of Parameterized Electrocardiogram Signals. Proceedings of the 7th Nordic Signal Processing Symposium – NORSIG, 2006;230-233. Reykjavik, Iceland.
C3. Viik, J: Modes of Heart Rate Compensations During Exercise ECG Test. 3rd International Summer School on Cardiac Arrhythmias, 2005;21-29. Eskisehir, Turkey.
C4. Viik J, Vänttinen H and Malmivuo J: Computer Program for Presentation of Temporal Changes in ECG Variables. IFMBE Proceedings, The 12th Nordic Baltic Conference on Biomedical Engineering and Medical Physics, 2002;2:260-261. Reykjavik, Iceland.
C5. Kallio J, Lehtinen R, Turjanmaa V, Viik J and Malmivuo J: Software for Exercise Test Database. IFMBE Proceedings, The 12th Nordic Baltic Conference on Biomedical Engineering and Medical Physics, 2002;2:256-257. Reykjavik, Iceland.
C6. Viik, J: Milloinkas se väitöskirja sitten valmistuukaan? Väitöskirjaprojekti vaatii sitkeää ja pitkäjänteistä tutkimusta. Conferment of Tampere University of Technology, Speech on behalf of the Conferred Doctors, 2002;49-53. Tampere, Finland.
C7. Viik J, Hyttinen J and Malmivuo J: Comparison between ST Depression and Elevation in Myocardial Ischemia Diagnosis. Proceedings of the 14th Annual Conference of the IEEE Engineering in Medicine and Biology Society, 1992;771-772. Paris, France.
C8. Hyttinen J, Viik J, Eskola H and Malmivuo J: Importance of Radial Sensitivity in Ischemic Injury Current Detection. Proceedings of the 14th Annual Conference of the IEEE Engineering in Medicine and Biology Society, 1992;618-619. Paris, France.
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D. Chapters in Book

D1. Which Leads Should Be Computer-Analysed? Exercise and the Heart (4th edition) by Froelicher and Myers, pp. 72-73 (p. 199). W.B. Saunders Company.
D2. Viik J, Lehtinen R and Malmivuo J: ST-Segment Depression/Heart Rate Hysteresis Improves Coronary Artery Disease Detection in Women. XIII World Congress of Cardiology, Rio de Janeiro, Brazil, April 26-30 1998. pp 905-909, 1998. Monduzzi Editore S.p.A.
D3. Lehtinen R, Sievänen H, Viik J, Turjanmaa V, Niemelä K and Malmivuo J: Accurate Detection of Coronary Artery Disease by Integrated Analysis of the ST-Segment Depression/Heart Rate Patterns During the Exercise and Recovery Phases of the Exercise Electrocardiography Test. The Year Book of Sports Medicine1997 by Shephard R.J. (ed.), pp.386-387. Mosby-Year Book, Inc.
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E. Abstracts

E1. Minkkinen, Suomen kardiologinen seura, Tampere 2009.
E2. Leino, Suomen kardiologinen seura, Tampere 2009.
E3. Perttunen J, Raninen K, Orsila R and Viik J: Joint Education in Wellbeing Technology by HYVITE consortium. Sendai, Japan. 2008.
E4. Viik J, Virtanen M, Nieminen T, Turjanmaa V, Lehtinen R, Lehtimäki T, Niemelä K, Nikus K, Niemi M, Kööbi T, Kähönen M and Malmivuo J. Heart Rate Variability Parameters Derived from Exercise ECG in the Detection of Coronary Artery. Abstractband of 33rd International Congress on Electrocardiology, Cologne, Germany, 28.6-1.7.2006. pp 7.
E5. Viik J, Lehtinen R and Malmivuo J: Reproducibility of the ST/HR Analysis During ECG Exercise Test in Asymptomatic Middle-Aged Women. Abstract book of International Congress on Electrocardiology, Kyoto, Japan, 27.6-1.7.2004. pp 129-130.
E6. Puurtinen M, Hyttinen J, Viik J, Kauppinen P, Malmivuo J: Estimation of ECG Signal of Closely Separated Bipolar Electrodes Using Thorax Models. IEEE Proceedings, San Francisco, 2004.
E7. Lehtinen R, Viik J, Kallio J, Jokiniitty J, Kähönen M and Turjanmaa V: Exercise ECG Database for Development and Evaluation of Diagnostic Methods and Signal Processing Algorithms. Proceedings of the International Society for Computerized Electrocardiology, 27th Annual Conference, Doorwerth, The Netherlands, 20.-25.04.2002. Journal of Electrocardiology 2002;35(Suppl):54.
E8. Kallio J, Lehtinen R, Turjanmaa V, Viik J and Malmivuo J: Software for Acquisition of Exercise Test Database. Proceedings of the International Society for Computerized Electrocardiology, 27th Annual Conference, Doorwerth, The Netherlands, 20.-25.04.2002. Journal of Electrocardiology 2002;35(Suppl):54.
E9. Lauer MS, Okin P, Viik J, Pothier-Snader CE, Cole CR, Blackstone EH and Lehtinen R: ST-Segment Heart Rate Hysteresis as a Predictor of Mortality. Journal of the America College of Cardiology: 2002;39 (Suppl A):197.
E10. Kallio J, Lehtinen R, Turjanmaa V, Viik J and Malmivuo J: Software for Acquisition of Exercise Test Database. XVIIIth Nordic Congress of Cardiology, Oslo, Norway, 07-09.6.2001. Abstracts of the XVIIIth Nordic Congress of Cardiology, p. 150.
E11. Viik J, Vänttinen H and Malmivuo J: Computer Program for Visualization of Temporal Changes in ECG Variables. XVIIIth Nordic Congress of Cardiology, Oslo, Norway, 07-09.6.2001. Abstracts of the XVIIIth Nordic Congress of Cardiology, p. 149.
E12. Viik J, Lehtinen R, and Malmivuo J: Chronotropic Incompetence in Detection of Coronary Artery Disease - Comparison of Different Formulas. Proceedings of the International Society for Computerized Electrocardiology, 26th Annual Conference, Florida, USA, 21.-26.04.2001. Journal of Electrocardiology 2001;34(Suppl):189 (abstract).
E13. Viik J: Diagnostic Properties of Exercise Electrocardiographic Leads and Variables in the Detection of Coronary Artery Disease. Sydänääni 2001;12:28-9.
E14. Viik J, Lehtinen R and Malmivuo J: Overall Diagnostic Performance of ST-Segment Depression at Recovery Phase of Exercise Test in Detection of Coronary Artery Disease. Proceedings of the International Society for Computerized Electrocardiology, 25th Annual Conference, San Francisco, USA, 29.4.-04.05.2000. Journal of Electrocardiology 2000;33(Suppl):82.
E15 Cole CR, Lehtinen R, Viik J, Diaz LA, Foody JM, Okin PM and Lauer MS: Prognostic Implications of Hysteresis of the ST-Segment/Heart Rate Recovery Loop Following Maximal Exercise. Journal of the America College of Cardiology: 2000;35 (Suppl A): 213-214.
E16. Lehtinen R, Viik J and Malmivuo J: Should ST-Segment Elevation be Included in Definition of ST/HR Index? Proceedings of the International Society for Computerized Electrocardiology, 25th Annual Conference, San Francisco, USA, 29.4.-04.05.2000. Journal of Electrocardiology 2000;33(Suppl):161.
E17. Viik J, Lehtinen R and Malmivuo J: Importance of Individual ECG Leads Using Maximum Value of ST/HR Hysteresis Over Lead System in Detection of Coronary Artery Disease. Proceedings of the International Society for Computerized Electrocardiology, 24th Annual Conference, Nara, Japan, 20.-25.04.1999.
E18. Viik J, Lehtinen R, Puustelli A, Sievänen H and Malmivuo J: Reproducibility of the ST-Depression Measurement During Exercise Electrocardiographic Test in Asymptomatic Middle-Aged Women. Journal of the American College of Cardiology 1999;33(Suppl A):560.
E19. Viik J, Lehtinen R and Malmivuo J: ST-Segment Depression/Heart Rate Hysteresis Improves Coronary Artery Disease Detection in Women. Proceedings of 25th Progress Report Meeting of Finnish Cardiac Society, 29.1.1999 Tampere. p 87, 1999.
E20. Lehtinen R, Viik J, Antila KJ, Knuuti MJ and Malmivuo J: ST-Segment Depression/Heart Rate Hysteresis for Improved Detection of Myocardial Ischemia in Exercise Electrocardiography. Proceedings of 25th Progress Report Meeting of Finnish Cardiac Society, 29.1.1999 Tampere. p 74, 1999.
E21. Viik J, Lehtinen R and Malmivuo J: ST-Segment Depression/Heart Rate Hysteresis Improves Coronary Artery Disease Detection in Women. Journal of the American College of Cardiology 1998;31(Suppl C):414-415.
E22. Viik J, Lehtinen R and Malmivuo J: Diagnostic Capabilities of Different Exercise ECG Lead Sets in Detection of Coronary Artery Disease Using Peak Exercise ST-Segment Depression. XXVth International Congress on Electrocardiology, 39th International Symposium on Vectorcardiography, Budabest, Hungary, June 3-6 1998, p 48, 1998.
E23. Viik J, Lehtinen R and Malmivuo J: Diagnostic Capability of ST-Segment Depression/Heart Rate Hysteresis During Exercise Electrocardiography Test. European Heart Journal 1997;18(Suppl):674.
E24. Viik J, Lehtinen R, Turjanmaa V, Niemelä K and Malmivuo J: Different Partition Criterion for Leads I and -aVR in Detection of the Coronary Artery Disease by Exercise Electrocardiography. Scandinavian Cardiovascular Journal 1997;31(Suppl 45):36.
E25. Hyttinen J, Viik J, Lehtinen R, Turjanmaa V and Malmivuo J: Relation of ST-Segment and ST/HR Slope Response to the Area and Location of Ischemic Injury. Scandinavian Cardiovascular Journal 1997;31(Suppl 45):30.
E26. Lehtinen R, Sievänen H, Viik J, Vuori I and Malmivuo J: Reproducibility of Computerized Exercise ECG Analysis. Computers in Cardiology 1997;96.
E27. Lehtinen R, Sievänen H, Viik J, Vuori I and Malmivuo J: Reproducibility of Computerized ST-Segment/Heart Rate Analysis of the Exercise ECG in Asymptomatic Middle-Aged Population. Scandinavian Cardiovascular Journal 1997;31(Suppl 45):31.
E28. Lehtinen R, Sievänen H, Viik J, Vuori I and Malmivuo J: Reproducibility of Computerized Exercise ECG Analysis in Asymptomatic Middle-Aged Population. Medical & Biological Engineering & Computing 1997;35(Suppl. Part 1):439.
E29. Hyttinen J, Viik J and Malmivuo J: Detection and Simulation of Myocardial Ischemic Injury Sources. A National Science Foundation/Engineering Research Center for Emerging Cardiovascular, Technologies Seminar Serie Fall 1994, Duke University, Durham, USA 1994.
E30. Hyttinen J, Eskola H, Viik J and Malmivuo J: Optimization of ECG-Leads with High Regional Aimed Sensitivity for Detection of Ischemic Injury Currents. Medical & Biomedical Engineering & Computing 1991;29(Suppl): 448.
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F. Internal Reports

F1. Virtanen M ja Viik J: HRV–menetelmät rasitus-EKG:n analysoinnissa (HRV Methods in Analysis of Exercise ECG). Tampere University of Technology, Ragnar Granit Institute, 33p, Report No 1, 2005.
F2. Viik J and Malmivuo J: Biomedical Engineering as a Career Resource: Placement in working life of Masters of Science in Engineering who have studied Biomedical Engineering at Tampere University of Technology. Tampere University of Technology, Ragnar Granit Institute, 41p, Report No 3, 1998. http://www.rgi.tut.fi/bme-survey/
F3. Viik J ja Malmivuo J: Lääketieteellisellä tekniikalla DI-maailmaan: Lääketieteellistä tekniikkaa Tampereen teknillisessä korkeakoulussa opiskelleiden diplomi-insinöörien sijoittuminen työelämään. Tampereen teknillinen korkeakoulu, Ragnar Granit instituutti, Raportti, 54p, No 2, 1998. http://www.rgi.tut.fi/di-selv/
F4. Pitkänen V and Viik J: Positron Emission Tomography and Application in Cardiology - a Review. Tampere University of Technology, Ragnar Granit Institute, Report No. 5, 1994.
F5. Savilahti K and Viik J: Coronary Circulation in Healthy and Atherosclerotic Patients. Description of Angiography Technique Used in Tampere University Hospital. Tampere University of Technology, Ragnar Granit Institute, Report No. 3, 1993.
F6. Hyttinen J, Viik J, Malmivuo J and Eskola H: Sensitivity Properties of the ECG Leads: Detection and Utilization. In: Nousiainen J, Malmivuo J, eds. Proceedings of the Third Ragnar Granit Symposium: Modelling and Detection of the Electric and Magnetic Field of the Heart. Tampere University of Technology, Ragnar Granit Institute, Report No.6:9-18, 1994.
F7. Viik J, Hyttinen J, Eskola H and Malmivuo J: Aimed Leads in Diagnosing Myocardial Ischemia. In Rissanen A, Salminen K and Malmivuo J: Seminar on electro- and magnetocardiology, Tampere University of Technology Feb. 6, 1991, Tampere University of Technology, Institute of Biomedical Engineering, Report No. 5:1-4, 1991.
F8. Hyttinen J, Eskola H, Viik, J and Malmivuo J: Development of aimed ECG-leads. In Rissanen A, Salminen K and Malmivuo J: Seminar on electro- and magnetocardiology, Tampere University of Technology Feb. 6, 1991, Tampere University of Technology, Institute of Biomedical Engineering, Report No. 5:5-10, 1991.
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G. Theses

G1. Viik J: Diagnostic Properties of Exercise Electrocardiographic Leads and Variables in the Detection of Coronary Artery Disease. Tampere University of Technology (Publications 299), Doctoral Thesis, 134p, 2000. http://www.ee.tut.fi/~viik/Viik_thesis.pdf
G2. Viik J: Development of New Synthesized ECG Leads and Comparison Their Diagnostic Performance. Department of Electrical Engineering, Tampere University of Technology, Licentiate Thesis, 83p, 1994.
G3. Viik J: Suunnatut EKG-kytkennät iskemian ilmaisussa (Aimed ECG-Leads in Detection Myocardial Ischemia), Tampere University of Technology, Department of Electrical Engineering, Master of Science Thesis, 97p, 1991.
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P. Presentations in Scientific Sessions

P1. 33th International Congress on Electrocardiology, Cologne, Germany, 28.6-1.7.2006. Heart Rate Variability Parameters Derived from Exercise ECG in the Detection of Coronary Artery.
P2. 3rd International Summer School on Cardiac Arrhytmias, Eskisehir, Turkey, 9-12.9.2005. Modes of Heart Rate Compensations During Exercise ECG Test.
P3. 31th International Congress on Electrocardiology, Kyoto, Japan, 27.6-1.7.2004. Reproducibility of the ST/HR Analysis During ECG Test in Asymptomatic Middle-Aged Women.
P4. XXX International Congress on Electrocardiology, Helsinki, Finland, 11-14.06.2003. Recovery ECG Parameters.
P5. XXIXth International Congress on Electrocardiology, Montreal, Canada, 02.-05.07.2002. Improved Detection of Coronary Artery Disease in Women Using ST/HR Hysteresis Method.
P6. 12th Nordic Baltic Conference on Biomedical Engineering and Medical Physics, Reykjavik, Iceland, 18-22.06.2002. Computer Program for Presentation of Temporal Changes in ECG Variables.
P7. 12th Nordic Baltic Conference on Biomedical Engineering and Medical Physics, Reykjavik, Iceland, 18-22.06.2002. Software for Exercise Test Database.
P8. Conferment of Tampere University of Technology, Speech on behalf of the Conferred Doctors, Tampere, Finland, 17.05.2002. Väitöskirjaprojekti vaatii sitkeää ja pitkäjänteistä tutkimusta (Dissertation Project Requires Tough and Persistent Investigation).
P9. 27th Annual Conference of International Society for Computerized Electrocardiology, Doorwerth, The Netherlands, 20.-25.04.2002. Software for Acquisition of Exercise Test Database. Proceedings of the International Society for Computerized Electrocardiology.
P10. Minisymposium on Assessment of ECG Changes in Exercise Test, Lund, 29-31.08.2001. Modes of Heart Rate Compensation. Invited lecture.
P11. Minisymposium on Assessment of ECG Changes in Exercise Test, Lund, 29-31.08.2001. ST/HR Hysteresis: Method to Evaluate Exercise and Recovery ST-Segment Changes at Identical Heart Rate. Invited lecture.
P12. Minisymposium on Assessment of ECG Changes in Exercise Test, Lund, 29-31.08.2001. Standard ECG Leads in Exercise ECG Diagnosis. Invited lecture.
P13. Minisymposium on Assessment of ECG Changes in Exercise Test, Lund, 29-31.08.2001. Other Experience from Tampere Studies and Plans in Future. Invited lecture.
P14. 26th Annual Conference of International Society for Computerized Electrocardiology, Hutchinson Island, Florida, USA, 21.04.-26.04. 2001. Chronotropic Incompetence in Detection of Coronary Artery Disease - Comparison of Different Formulas.
P15. 7th Ragnar Granit Symposium: Electrocardiography in Ischemic Heart Disease, Helsinki, Finland 29-30.5.2000. Standard ECG Leads in Exercise ECG Diagnosis.
P16. 25th Annual Conference of International Society for Computerized Electrocardiology, San Francisco, USA, 29.04.-04.05. 2000. Overall Diagnostic Performance of ST-Segment Depression at Recovery Phase of Exercise Test in Detection of Coronary Artery Disease.
P17. 11th Nordic-Baltic Conference on Biomedical Engineering, Tallinn, Estonia, 6-10.6.1999. Diagnostic Performances of Individual Electrocardiographic Leads in Detection of Coronary Artery Disease using Traditional or Heart Rate-adjusted ST-segment Analysis.
P18. 11th Nordic-Baltic Conference on Biomedical Engineering, Tallinn, Estonia, 6-10.6.1999. Effect of Number of Electrocardiographic Leads in Detection of Coronary Artery Disease when using Maximum Value of Traditional or Heart Rate-adjusted ST-segment Analysis.
P19. 11th Nordic-Baltic Conference on Biomedical Engineering, Tallinn, Estonia, 6-10.6.1999. Biomedical Engineering as a Career Resource: Part 1. Employment Situation after Graduation.
P20. 11th Nordic-Baltic Conference on Biomedical Engineering, Tallinn, Estonia, 6-10.6.1999. Biomedical Engineering as a Career Resource: Part 2. Education and Instruction.
P21. 24th Annual Conference of the International Society for Computerized Electrocardiology, Nara, Japan, 20-25.4.1999. Importance of Individual ECG Leads Using Maximum Value of ST/HR Hysteresis Over Lead System in Detection of Coronary Artery Disease.
P22. Seminar Serie of Clinical Physiology, Tampere University Hospital, Tampere, Finland. 22.3.1999. ST/HR-hysteresis rasitus-EKG:sta (ST/HR Hysteresis Defined from Exercise ECG).
P23. 49th Annual Scientific Session of American College of Cardiology, New Orleans, USA, 7-11.3.1999. Reproducibility of the ST-Depression Measurement During Exercise Electrocardiographic Test in Asymptomatic Middle-Aged Women.
P24. XXVth International Congress on Electrocardiology, Budapest, Hungary, 3-6.6.1998. Diagnostic Capabilities of Different Exercise ECG Lead Sets in Detection of Coronary Artery Disease Using Peak Exercise ST-Segment Depression.
P25. XIII World Congress of Cardiology, Rio de Janeiro, Brazil, 26-30.4.1998. ST-Segment Depression/Heart Rate Hysteresis Improves Coronary Artery Disease Detection in Women.
P26. XIXth Congress of the European Society of Cardiology, Stockholm, Sweden, 24-28.8.1997. Diagnostic Capability of ST-Segment Depression/Heart Rate Hysteresis During Exercise Electrocardiography Test.
P27. XVIth Nordic Congress of Cardiology, Tampere, Finland, 11-13.6.1997. Different Partition Criterion for Leads I and -aVR in Detection of the Coronary Artery Disease by Exercise Electrocardiography.
P28. 10th Nordic-Baltic Conference on Biomedical Engineering & 1st International Conference on Bioelectromagnetism, Tampere, Finland. 10.6.1996. Synthesized ECG Leads in Detection of Coronary Artery Disease.
P29. Seminar Serie of Clinical Physiology, Tampere University Hospital, Tampere, Finland. 18.4. 1995. Monimuuttujamenetelmät rasitus-EKG:n diagnostisen arvon parantamisessa (Multivariate Analysis in Improving the Diagnostic Performance of Exercise ECG).
P30. XXIInd International Congress on Electrocardiology, Nijmegen, The Netherlands. 29.6.1995. Capability of the Single ECG Leads of the 12-lead System to Discriminate Patients With CAD and Without CAD - ROC-Analysis Approach.
P31. Computers in Cardiology, Vienna, Austria. 13.9.1995. Improving Ischemia Diagnosis with Synthesized ECG Leads.
P32. Seminar Serie of Clinical Physiology, Turku Central University Hospital, Turku, Finland. 2.11.1994. Monimuuttujamenetelmät rasitus-EKG:n diagnostisen arvon parantamisessa (Multivariate Analysis in Improving the Diagnostic Performance of Exercise ECG).
P33. 14th Annual Conference of the IEEE Engineering in Medicine and Biology Society, Paris, France. 29.10.1992. Comparison between ST Depression and Elevation in Myocardial Ischemia Diagnosis.
P34. Seminar on Electro- and Magnetocardiology, Tampere University of Technology, Tampere. 6.2.1991. Aimed Leads in Diagnosing Myocardial Ischemia.
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