Prof. Ivaylo Christov, DSc | Selected publications

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Selected publications

Dissertations

  • Христов И. (2005) “Премахване на смущения, разпознаване на вълни и измерване на параметри в електрокардиографски сигнали”. Дисертация за присъждане на научна степен “Доктор на техническите науки”, Българска Академия на Науките, Специализиран Съвет по Електронна и Компютърна Техника. (Cited: 7)
  • Христов И. (1988). “Възприемане, обработка и регистриране на електрокардиосигнали чрез микропроцесорни устройства” Дисертация за присъждане на научна степен “Доктор”, Медицинска Академия, Специализиран Съвет по Електронна и Компютърна Техника. (Cited: 4)

Book chapter

  1. Bortolan G, Christov II, Pedrycz W (2012) Hyperellipsoids for beat classification in electrocardiogram, chapter 10, pp. 219-236. In: ECG Signal Processing, Classification and Interpretation: A Comprehensive Framework of Computational Intelligence, Eds: Gacek A, Pedrycz W, © Springer – London, Dordrecht, Heidelberg, New York, 279 pages, ISBN: 978-0-85729-867-6.

Papers in foreign research journals

  1. Christov I, Simov D, Dotsinsky I, Simova I (2016) Increase of electrical impedance following hemodialysis is not the reason for QRS augmentation. Annals of Noninvasive Electrocardiology. 21, (2), page 214, DOI: 10.1111/anec.12336, IF=1.13, Online ISSN: 1542-474X (Cited: 1)
  2. Simova I, Bortoan G, Kambova L, Christov I, Katova T (2015) Episodes of T-wave and QRS complex alternans in haemodialysis patients. EC Cardiology, 2, (1), pp. 60-67, https://www.ecronicon.com/eccy/pdf/ECCY-02-00008.pdf (Cited: 1)
  3. Jekova I, Christov I, Krasteva V, Bortoan G, Matveev M (2015) Assessment of the Potential of Morphological ECG features for person identification. Computing in Cardiology, 42, pp. 921-924, ISSN: 2325-8861
  4. Simov D, Christov I, Bortoan G, Matveev M, Petrov I, Krasteva V (2015) Changes in the electrocardiogram induced by coronary artery bypass grafting. Computing in Cardiology, 42, pp. 1129-1132, ISSN: 2325-8861
  5. Simova I, Christov I, Bortoan G, Abacherly R, Kambova L, Jekova I (2015) Hemodialysis-induced ST-segment deviation. Computing in Cardiology, 42, pp. 1133-1136, ISSN: 2325-8861 (Cited: 1)
  6. Simova I, Christov I, Bortolan G (2015) A review on electrocardiographic changes in diabetic patients. Current Diabetes Reviews, 11, pp. 102-106, ISSN: 1875-6417, IF (SJR)2012=3.118 (Cited: 3)
  7. Bortolan G, Christov I, Simova I, Dotsinsky I (2015) Noise processing in exercise ECG stress test for the analysis and the clinical characterization of QRS and T wave alternans. Biomedical Signal Processing and Control, 18, pp.378-385, IF(2013)=1.68, http://dx.doi.org/10.1016/j.bspc.2015.02.003 Cited:4
  8. Simova I, Christov I, Kambova L, Bortolan G, Katova T (2014) QRS and T loops area changes during haemodialysis. Computing in Cardiology, 41, pp. 409-412, ISSN: 2325-8861 (Cited: 1)
  9. Bortolan G, Christov I (2014) Dynamic filtration of high-frequency noise in ECG signal. Computing in Cardiology, 41, pp. 1089-1092, ISSN: 2325-8861 (Cited: 1)
  10. Simov D, Milanova M, Matveev M, Krasteva V, Christov I (2014) Cardiac autonomic innervation following coronary artery bypass grafting evaluated by high resolution heart rate variability. Computing in Cardiology, 41, pp. 1013-1016, ISSN: 2325-8861
  11. Christov I, Batchvarov VN, Simova I, Dimitrov N, Behr ER (2014) Comparative study of signal decomposition methods for enhancement of the accuracy of T-wave end localisation. Computing in Cardiology, 41, pp. 1073-1076, ISSN: 2325-8861
  12. Christov I, Simova I, Abacherly R (2014) Extraction of the fetal ECG in noninvasive recordings by signal decompositions. Physiological Measuuremet, 35, pp. 1713-1721, IF(2012)=1.496, ISSN: 0967-3334 (Cited: 4)
  13. Christov I, Bortolan G, Simova I (2013) Load dependent changes of cardiac depolarization and repolarization during exercise ECG test. Computing in Cardiology, 40, pp. 547-550, (Cited: 1)
  14. Neycheva T, Stoyanov T, Abächerli R, Christov I (2013) High resolution 16-channel ECG tester simulator for online digital-to-analogue conversion of data from PC. Computing in Cardiology, 40, pp. 457-460, ISSN: 2325-8861 (Cited: 1)
  15. Christov I, Simova I, Abächerli R (2013) Cancellation of the maternal and extraction of the fetal ECG in noninvasive recordings. Computing in Cardiology, 40, pp. 153-156, ISSN: 2325-8861 (Cited 9)
  16. Jekova I, Krasteva V, Christov I, Abächerli R (2012) Threshold-based system for noise detection in multilead ECG recordings. Physiological Measurement, 33, pp. 1473-1477, IF(2011)=1.677, ISSN: 0967-3334  (Cited 15)
  17. Bortolan G, Christov I, Simova I, Dimitrov N, Jekova I, Krasteva V (2012) Clinical characterization by principal component analysis of stress test ECG. Computing in Cardiology, 39, pp. 613-616, ISSN: 0276-6574
  18. Christov I, Bortolan G, Simova I, Katova T (2012) T wave and QRS complex alternans during stress ECG testing according to the presence or absence of diabetes mellitus. Journal of Endocrinology and Metabolism, 2, (1), pp. 32-38, online at: http://www.jofem.org/index.php/jofem/article/viewFile/88/99 , ISSN: 1923-287X (Cited 2)
  19. Bortolan G, Christov I (2012) T-wave alternans detection by a combined method of principal component analysis and T-wave amplitude. Physiological Measurement, 33, pp. 333-343, IF(2011)=1.677, ISSN: 0967-3334 (Cited 6)
  20. Christov I, Bortolan G, Simova I, Katova T (2011) Influence of diabetes mellitus on T wave and QRS complex alternans during stress ECG testing. Computing in Cardiology, 38, pp. 49-52, (Cited: 1)
  21. Jekova I, Krasteva V, Dotsinsky I, Christov I, Abächerli R (2011) Recognition of diagnostically useful ECG recordings: Alert for corrupted or interchanged leads. Computing in Cardiology, 38, pp. 429-432, ISSN 0276-6574.  (Cited 13)
  22. Abächerli R, Leber R, Christov I, Twerenbold R, Reichlin T, Müller C (2011) Comparison between man and machine in the case of acute coronary syndrome and acute myocardial infarction detection in a chest pain cohort in the emergency department. Computing in Cardiology, 38, pp. 777-779, ISSN 0276-6574.
  23. Batchvarov VN, Bortolan G, Christov II, Bastiaenen R, Raju H, Naseef A, Behr ER (2011) ECG Wavelet Analysis for the Detection of Gene Mutations in Patients with Brugada Syndrome. Computing in Cardiology, 38, pp. 785-788, ISSN 0276-6574.**
  24. Matveev M, Krasteva V, Tsonev S, Milanova M, Prokopova R, Christov I (2011) Cardiac syndrome X electrocardiographic profile using high-resolution signal-averaged VCG. Computing in Cardiology, 38, pp. 793-796, ISSN 0276-6574. (Cited 1)
  25. Abächerli R, Kobza R, Christov I, Frey F, Erne P (2011) Do the ECG axis and intervals depend on the heart rate and on the body habitus? Computing in Cardiology, 38, pp. 825-828, ISSN 0276-6574. (Cited 1)
  26. Mateev H, Simova I, Katova T, Dimitrov N, Christov I (2011) TEMEO – a novel mobile heart rhythm telemonitoring system. Computing in Cardiology, 38, pp. 883-886, ISSN 0276-6574. (Cited 7)
  27. Christov I, Bortolan G, Simova I, Katova T (2010) T wave and QRS complex alternans during standard diagnostic stress ECG test. Computing in Cardiology, 37, pp. 1039-1042, ISSN 0276-6574 (Cited 3)
  28. Batchvarov V, Christov I, Bortolan G, Behr E (2010) Principal component analysis of the QRS complex during diagnostic ajmaline test for suspected Brugada syndrome. Computing in Cardiology, 37, pp. 501-504, ISSN 0276-6574 (Cited 2)
  29. Jekova I, Krasteva V, Ménétré S, Stoyanov T, Christov I, Fleischhackl R, Schmid J-J, Didon J-P (2009) Bench study of the accuracy of a commercial AED arrhythmia analysis algorithm in the presence of electromagnetic interference. Physiological Measurement, 30, pp. 695-705, ISSN: 0967-3334.  (Cited 11)
  30. Batchvarov VN, Christov II, Bortolan G, Govindan M, Behr ER (2009) Automatic assessment of right ventricular repolarisation heterogeneity during diagnostic ajmaline test for suspected Brugada syndrome. Computers in Cardiology, 36, pp. 297-300 (Cited 1)
  31. Bortolan G, Christov II, Batchvarov VN, Behr ER (2009) QRS&T wave alternans and beat-to-beat ventricular repolarization variability assessed from 12-lead Holters in patients with suspected Brugada syndrome. Computers in Cardiology, 36, pp. 305-308 (Cited 2)
  32. Batchvarov VN, Bortolan G, Christov II (2008) Effect of heart rate and body position on the complexity of the QRS and T wave in healthy subjects. Computers in Cardiology, 35, pp. 225-228 (Cited 6)
  33. Bortolan G, Christov II (2008) Principal component analysis for the detection and assessment of T-wave alternans. Computers in Cardiology, 35, pp. 521-524 (Cited 9)
  34. Simova I, Denchev S, Christov I, Matveev M, Dimitrov S, Vladimirova L, Kurtev S (2008) Flow mediated dilatation and QT interval dispersion in stable coronary artery disease patients according to the presence or absence of myocardial infarction. The Internet Journal of Cardiology, 5, (2), http://www.ispub.com/ostia/index.php?xmlFilePath=journals/ijc/vol5n2/flow.xml
  35. Jekova I, Bortolan G, Christov I (2008) Assessment and comparison of different methods for heartbeat classification. Medical Engineering & Physics, 30, pp. 248-257.  (Cited 80)
  36. Simova II, Denchev SV, Christov II, Matveev MG (2007) Comparison of flow mediated dilatation and QT interval dispersion as noninvasive methods for evaluation of coronary artery disease. The Online Journal of Cardiology, Medical Teaching, McGill CME Cardiology http://cme.med.mcgill.ca/php/hom.php?id=722 (Cited: 1)
  37. Simov D, Simova I, Danov V, Christov I (2007) Effect of coronary artery bypass grafting on QT interval dispersion. The Internet Journal of Thoracic and Cardiovascular Surgery, 10 (1), https://ispub.com/IJTCVS/10/1/9964 (Cited 4)
  38. Bortolan G, Christov II, Pedrycz W (2007) Hyperbox classifiers for ECG beat analysis. IEEE Computers in Cardiology, 34, pp. 145-148 (Cited 5)
  39. Batchvarov VN, Christov II, Bortolan G, Simova II, Camm AJ (2007) Post-extrasystolic changes of the vectorcardiographic T loop in healthy subjects. IEEE Computers in Cardiology, 34, pp. 451-454. (Cited 3)
  40. Christov I, Simova I (2007) Q-onset and T-end delineation: assessment of the performance of an automated method with the use of a reference database, Physiological Measurement, 28, (2), pp. 213-221, ISSN: 0967-3334  (Cited 28)
  41. Matveev M, Naydenov S, Krasteva V, Donova T, Christov I (2006) Assessment of the infarct size in high-resolution electrocardiograms, IEEE Computers in Cardiology, 33, pp. 461-464 (Cited 3)
  42. Gómez-Herrero G, Jekova I, Krasteva V, Christov I, Gotchev A, Egiazarian K (2006) Relative estimation of the Karhunen-Loève transform basis functions for detection of ventricular ectopic beats, IEEE Computers in Cardiology, 33, pp. 569-572  (Cited 16)
  43. Christov II, Simova II (2006) Fully Automated Method for QT Interval Measurement in ECG, IEEE Computers in Cardiology, 33, pp. 321-324  (Cited 27)
  44. Christov I, Gómez-Herrero G, Krasteva V, Jekova I, Gotchev A, Egiazarian K (2006) Comparative study of morphological and time-frequency ECG descriptors for heartbeat classification, Medical Engineering & Physics, 28, (9), pp. 876-887.  (Cited 192)
  45. Christov I, Dotsinsky I, Simova I, Prokopova R, Trendafilova E, Naydenov S (2006) Dataset of manually measured QT intervals in the electrocardiogram, Biomedical Engineering Online, 5, (31), pp. 1-8, http://www.biomedical-engineering-online.com/content/5/1/31.  (Cited 31)
  46. Bortolan G, Jekova I, Christov I (2005) Comparison of four methods for premature ventricular contractions and normal beats clustering. IEEE Computers in Cardiology, 32, pp. 921-924.  (Cited 47)
  47. Levkov Ch, Mihov G, Ivanov R, Daskalov I, Christov I, Dotsinsky I (2005) Removal of power-line interference from the ECG: A review of the subtraction procedure. Biomedical Engineering Online, 4, 50, http://www.biomedical-engineering-online.com/content/4/1/50 (Cited 139)
  48. Christov I, Jekova I, Bortolan G (2005) Premature ventricular contraction classification by the Kth nearest neighbors rule, Physiological measurement, 26, pp. 123-130.  (Cited 85)
  49. Jekova I, Bortolan G, Christov I (2004) Pattern Recognition and Optimal Parameter Selection in Premature Ventricular Contraction Classification IEEE Computers in Cardiology, 31, pp. 357-360.  (Cited 27)
  50. Bazhyna A, Gotchev A, Christov II, Daskalov IK, Egiazarian K (2004) Beat-to-beat noise removal in noninvasive His-bundle electrocardiogram, Med. & Biol. Eng. & Comp, 42, 5, pp. 712-720. (Cited: 9)
  51. Bortolan G, Bressan M, Christov I (2003) Gender and Age Influences in T-Loop Morphology, IEEE Computers in Cardiology, 30, pp. 513-516. (Cited: 1)
  52. Bortolan G, Bressan M, Christov I (2002) Longitudinal modifications of the T-loop morphology, IEEE Computers in Cardiology, 29, pp. 685-688. (Cited: 1)
  53. Christov I, Bortolan G, Daskalov I (2001) Sequential Analysis for Automatic Detection of Atrial Fibrillation and Flutter, IEEE Computers in Cardiology, 28, pp. 293-296.  (Cited: 30)
  54. Bortolan G, Christov I (2001) Myocardial infarction and ischemia characterization from T-loop Morphology in VCG, IEEE Computers in Cardiology, 28, pp. 633-636.  (Cited: 12)
  55. Christov I, Bortolan G, Daskalov I (2001) Automatic detection of atrial fibrillation and flutter by wave rectification method, Jour. of Med. Eng. & Tech., 25, 5, pp. 217-221.  (Cited: 13)
  56. Christov I, Dotsinsky I, Atanassov K, Georgiev P (1999) Generalized net model of an electrocardiograph, Modelling, Measurement & Control, 60, 1-2, pp. 1-8. (Cited: 2)
  57. Daskalov IK, Christov II (1997) Improvement of resolution in measurement of electrocardiogram RR intervals by interpolation, Med. Eng. & Phys., 19, 4, pp. 375-379.  (Cited: 63)
  58. Daskalov IK, Christov II, Kolev V (1997) High-pass filtering of the electrogastrogram, Med. & Biol. Eng. & Comp., 35, 3, pp. 279-282. (Cited: 3)
  59. Christov I, Bortolan G (2004) Ranking of pattern recognition parameters for premature ventricular contractions classification by neural networks, Physiological measurement, 25, pp. 1281-1290.  (Cited: 78)
  60. Christov II (2004) Real time electrocardiogram QRS detection using combined adaptive threshold, Biomedical Engineering Online, 3, 28, http://www.biomedical-engineering-online.com/content/3/1/28 Top 20 past year Method: 3  (Cited: 284)
  61. Bazhyna A, Christov II, Gotchev A, Daskalov IK, Egiazarian K (2003) Powerline Interference Suppression in High-Resolution ECG, IEEE Computers in Cardiology, 30, pp. 561-564.  (Cited: 20)
  62. Bazhyna A, Gotchev A, Christov II, Daskalov IK, Egiazarian K (2003) Noninvasive His-bundle Electrocardiogram: Toward Beat-to-Beat Electromyogram Noise Removal, IEEE Computers in Cardiology, 30, pp. 545-548. (Cited: 2)
  63. Christov II (2000) Dynamic powerline interference subtraction from biosignals, Jour. of Med. Eng. & Tech., 24, 4, pp. 169-172.  (Cited: 38)
  64. Christov II, Daskalov IK (1999) Filtering of electromyogram artifacts from the electrocardiogram, Med. Eng. & Phys., 21, 10, pp. 731-736.  (Cited: 94)
  65. Christov II, Iliev GL (2005) Public access defibrillation: Suppression of 16.7 Hz interference generated by the power supply of the railway systems. Biomedical Engineering Online, 4, 16, http://www.biomedical-engineering-online.com/content/4/1/16  (Cited: 17)
  66. Daskalov IK, Christov II (1999) Automatic detection of the electrocardiogram T-wave end, Med. & Biol. Eng. & Comp. 37, 3, pp. 348-353.  (Cited: 61)
  67. Daskalov IK, Christov II (1999) Electrocardiogram signal preprocessing for automatic detection of QRS boundaries, Med. Eng. & Phys., 21, 1, pp. 37-44.  (Cited: 96)
  68. Kontodimopoulos N, Pallikarakis N, Christov I, Daskalov I (1998) In-house development of test equipment for quality control and training. Case study: a prototype ECG simulator-tester, Med. Eng. & Phys., 20, 10, pp. 717-721. (Cited: 12)
  69. Daskalov IK, Dotsinsky IA, Christov II (1998) Developments in ECG acquisition, preprocessing, parameter measurement and recording, IEEE Eng. in Med. & Biol., 17, 2, pp. 50-58. (Cited: 189) Method: 1
  70. Daskalov IK, Christov II, Dotsinsky IA (1997) Low frequency distortions of the electrocardiogram, Med. Eng. & Phys., 19, 4, pp. 387-393.  (Cited: 13)
  71. Dotsinsky IA Christov II, Daskalov IK (1996) Assessment of metrological characteristics of digital electrocardiographs, Jour. Clin. Eng., 21, 2, pp. 156-160. (Cited: 4)
  72. Daskalov IK, Atanassova E, Dotsinsky IA, Christov II (1995) Investigation in Noninvasive Electrogastrography, Biomedizinische Technik Band, 40, Erganzungsband 2, pp. 161-163. (Cited: 2)
  73. Atanassova E, Daskalov IK, Dotsinsky IA, Christov II, Atanassova A (1995) Non-Invasive Electrogastrography. Part 1: Correlation between the Gastric Electrical Activity in Dogs with Implanted and Cutaneous Electrodes, Archives of Physiology and Biochemistry, 103, 4, pp. 431-435. (Cited: 21)
  74. Atanassova E, Daskalov IK, Dotsinsky IA, Christov II, Atanassova A (1995) Non-Invasive Electrogastrography. Part 2: Human Electrogastrogram, Archives of Physiology and Biochemistry, 103, 4, pp. 436-441.  (Cited: 16)
  75. Christov II Dotsinsky IA, Daskalov IK (1992) High-pass filtering of ECG signals using QRS elimination. Med. & Biol. Eng. & Comp., 30, 2, pp. 253-256.  (Cited: 48)
  76. Dotsinsky IA, Christov II, Daskalov IK (1991) Multichannel DC amplifier for a microprocessor electroencephalograph, Med. & Biol. Eng. & Comp., 29, 3, pp. 324-329. (Cited: 18)
  77. Christov II, Dotsinsky IA (1990) Recording vectorcardiographic loops with a microdot thermal printer, Frontiers of Med. and Biol. Eng., 2, 1, pp. 37-42. (Cited: 1)
  78. Christov II, Dotsinsky IA (1988) New approach to the digital elimination of 50 Hz interference from the electrocardiogram, Med. & Biol. Eng. & Comp., 26, 4, pp. 431-434.  (Cited: 79)
  79. Dotsinsky IA, Christov II Levkov C and Daskalov IK (1985) A microprocessor – electrocardiograph, Med. & Biol. Eng. & Comp., 23, 3, pp. 209-212. (Cited: 11)

Papers in foreign national journals

  1. Jekova I, Bortolan G, Christov I (2005) Classification of QRS complexes: comparison of different methods ISIB – Consiglio Nazionale delle Ricerche, Padova, Italy, Technical Report, 02/2005, pp. 1-19.
  2. Christov I, Bortolan G (2003) Premature ventricular contraction classification: Pattern recognition parameters ranking, ISIB – Consiglio Nazionale delle Ricerche, Padova, Italy, ISIB – 04/12, pp. 1-50.
  3. Christov I, Bortolan G, Daskalov I (2001) Assessment of atrial fibrillation and flutter by T-P interval signal rectification in ECG, LADSEB – Consiglio Nazionale del Ricerche, Padova, Italy, 05/01, Marzo, pp. 1-16.
  4. Christov I, Bortolan G, Daskalov I (2001) Automatic detection of atrial fibrillation and flutter: A combined algorithm, LADSEB – Consiglio Nazionale del Ricerche, Padova, Italy, 07/01, Aprile, pp. 1-14.
  5. Bortolan G, Christov I (2001) Some characteristics of the T-loop morphology in VCG, LADSEB – Consiglio Nazionale del Ricerche, Padova, Italy, 09/01, Maggio, pp. 1-14.

Papers in Bulgarian research journals

  1. Krasteva VT, Trendafilova EG, Didon J-P, Mudrov TN, Christov II (2011) Pre- and post- shock thoracic impedance relations in external electrical cardioversion, Annual Journal of Electronics, 5, (2), book 1, pp. 72-75, ISSN: 1313-1842.
  2. Симов Д, Симова Я, Данов В, Христов И (2010) Промени в QT-интервала в ранния следоперативен период след аорто-коронарен байпас. Мединфо, 9, pp. 18-20, ISSN: 1314-0345, http://www.medinfo-bg.com/?page=statiq&id=1051
  3. Stoyanov T, Christov I, Jekova I, Krasteva V (2010) Online adaptive filter for mains interference suppression in diagnostic electrocardiographs: Cases of amplitude and frequency deviation. Annual Journal of Electronics, 4, (2), book 2, pp. 150-153.
  4. Bortolan G, Bressan M, Christov I (2009) Review on the diagnostic potentials of the T-loop morphology in VCG. 1st Nat. Conf. with Intern. Participation on Biomedical and Bioprocess Engineering, 3-4 December, Centre of Biomedical Engineering, Bulgarian Academy of Sciences In: Bioautomation, 13, (4), pp. 55-71. http://www.clbme.bas.bg/bioautomation/2009/vol_13.4/files/13.4_1.07.pdf (Cited: 4)
  5. Доцински И, Христов И, Стоянов Т (2009) Предварителна обработка на електрокардиографски сигнали. Списание на БАН, 72, (4), pp. 10-12, ISSN 0007-3989
  6. Christov I, Jekova I, Krasteva V, Dotsinsky I, Stoyanov T (2009) Rhythm analysis by heartbeat classification in the electrocardiogram. Bioautomation, 13, (2), pp. 84-96, http://www.clbme.bas.bg/bioautomation/2009/vol_13.2/files/13.2_4.2.pdf (Cited: 3)
  7. Доцински И, Кръстева В, Жекова И, Христов И, Стоянов Т (2008) Разпознаване на екстрасистоли в електрокардиограмата: обзор на методи и алгоритми приложими в квазиреално време. Автоматика и Информатика, 4, pp. 25-30.
  8. Christov I (2007) Assessment of the performance of the adaptive thresholding algorithm for QRS detection with the use of AHA database. Bioautomation, 6, pp. 27-37, http://www.clbme.bas.bg/bioautomation/2007/vol_6.1/files/6_4.1.pdf (Cited: 5)
  9. Krasteva VTz, Jekova II, Christov II (2006) Automatic detection of premature atrial contractions in the electrocardiogram. Electrotechnika & Electronica E+E, 9-10, pp. 49-55. (Cited: 6)
  10. Christov I (2006) Power-line interference elimination from ECG: dynamic evaluation of the linearity criterion. Electrotechnika & Electronica E+E., 7-8, pp. 34-39. (Cited: 2)
  11. Stoyanov T, Mudrov N, Christov I, Dotsinsky I (2002) ECG computer-based system. Electrotechnika & Electronica E+E, 1-2, pp. 3-9. (Cited: 2)
  12. Христов И (2004) Автоматична класификация на камерни и предсърдни екстрасистоли в електрокардиографски сигнали. Електроника и Електротехника E+E, 11-12, pp. 21-27.
  13. Христов И (2004) Двупосочен високочестотен рекурсивен филтър за подтискане на дрейфа на изоелектричната линия. Електроника и Електротехника, E+E, 1-2, pp. 43-50. Method: 1 (Cited: 3)
  14. Dotsinsky I, Christov I, Daskalov I (2002) Twelve-lead electrocardiogram obtained by eight channels. Electrotechnika & Electronica E+E, 1-2, pp. 10-12. (Cited:8)
  15. Christov, I, Stoyanov T (2002) Steep slope method for real time QRS detection. Electrotechnika & Electronica E+E, 1-2, pp. 13-17. (Cited:8)
  16. Dotsinsky I, Christov I (2002) Power-line interference subtraction from the electrocardiogram in the presence of electromyogram artifacts. Electrotechnika & Electronica E+E, 1-2, pp. 18-21. (Cited: 6)
  17. Dotsinsky IA, Christov II, Daskalov IK (1996) Electrocardiograms recording of paced patients and during defibrillation. in: Philipov, P. (Ed.) Annual school lectures, Vol. 18, 1, pp. 179-183.
  18. Йотов Ф, Пунджев В, Христов И, Новаков Е, Калчева С, Соколова Е, Райчева С (1988) Микропроцесорен интегратор за електрохимични и аналитични изследвания. сп. “Химия и индустрия”, кн. 8, стр. 347-350.
  19. Христов И (1981) Проблеми при изчисляване на голям брой показатели от М-сканиран ехокардиографски запис. сп. Медицинска техника, кн. 4, стр. 43-53.
  20. Левков Ч, Пунджев В, Христов И (1981) Микропроцесорно управление на печатащ механизъм “ИЗОТ-310”. сп. “Електропромишленост и приборостроене”, кн. 6, стр. 242-245. (Cited: 1)
  21. Христов И (1981) Приложение на микропроцесорите в медицинската електронна апаратура. Микропроцесор МС6800 – структура. Медицинска техника, кн. 1, стр. 12-20.
  22. Христов И (1981) Приложение на микропроцесорите в медицинската електронна апаратура. Видове адресации и тяхното изпълнение. кн. 1, стр. 21-31.
  23. Христов И (1981) Приложение на микропроцесорите в медицинската електронна апаратура. Микропроцесор МС6800 – изводи на чипа. сп. Медицинска техника, кн. 2, стр. 3-13.
  24. Христов И (1981) Приложение на микропроцесорите в медицината. Система за прекъсвания в МС6800. сп. Медицинска техника, кн. 2, стр. 13-19.
  25. Христов И (1981) Приложение на микропроцесорите в медицината. Стандартно програмно осигуряване. Част 1: Първична програма. Редактор. сп. Медицинска техника, кн. 3, стр. 3-8.
  26. Христов И (1981) Приложение на микропроцесорите в медицината. Стандартно програмно осигуряване. Част 2: Асемблер. Операционна система. Медицинска техника, кн. 3, стр. 8-18.
  27. Христов И (1981) Приложение на микропроцесорите в медицинската електронна апаратура. Входно-изходна схема за последователен асинхронен интерфейс. сп. Медицинска техника, кн. 4, стр. 3-10.
  28. Христов И (1981) Приложение на микропроцесорите в медицинската електронна апаратура. Периферен интерфейсен адаптер. сп. Медицинска техника, кн. 4, стр. 11-19.
  29. Христов И (1980) Метод и програма за изчисление на площта на затворен контур. сп. Медицинска техника, кн. 3, стр. 78-81.

Textbooks and manuals

  1. Христов И, Илиев И (2001) Ръководство за лабораторни упражнения по Анализ и обработка на биомедицински сигнали и данни. Технически университет, София.

Keynote/Plenary reports at international forums

  1. Bortolan G, Christov I, Simova I, Dimitrov N (2012) Clinical characterization of the QRS complex and T wave heterogeneity during stress test ECG. European Medical Physics and Engineering Conference, Sofia, 18-20 October, pp. 76-84, ISBN: 978-954-91589-3-9, Invited lecture. (Cited: 1)
  2. Goldstein B (moderator), Malik M, Moorman R, Zebrowski J, Park S, Seely A, Christov I, Moody G (panelists) (2010) Managing information flow at the bedside: Current monitoring systems and variability analysis: what it is and what it is not. 9-th Int. Conf. on Complexity in Acute Illness, 10-12 September, Atlanta, Georgia, US – пълно заплащане на такса, сам.. билет и разходи по престой
  3. Christov I (2010) Assessment of signal quality: implications for continuous monitoring at the bedside. 9-th Int. Conf. on Complexity in Acute Illness, 10-12 September, Atlanta, Georgia, US – пълно заплащане на такса, сам.. билет и разходи по престой
  4. Goldstein B, Batchinsky A (moderators), Randall M, Christov I, Burykin A, Kuusela T, Eckberg D, Costa M, Seely A (panelists) (2010) Development of methodological standards for use of physiologic waveform data in the clinical setting. 9-th Int. Conf. on Complexity in Acute Illness, 10-12 September, Atlanta, Georgia, US – пълно заплащане на такса, сам. билет и разходи по престой
  5. Simova I, Christov I (2007) Sources of variation in the QT readings: what should you be aware of?, lecture notes, invited lecture at QT Prolongation and Safety Pharmacology, Paris, 13-14 March, Bioautomation, 6, pp. 78-91. http://www.clbme.bas.bg/bioautomation/6_4.6.pdf (Cited: 2)

Conference reports, published in foreign issues

  1. Simova I, Kambova L, Bortolan G, Christov I, Katova T (2016) Prognosis and survival in haemodialysis patiens. European Society of Cardiology Congress on Hearth Failure 21-24 May, Florence, Italy
  2. Simova I, Gruev I, Bortolan G, Christov I, Georgieva S (2016) T-wave alternans in competitive athletes. European Society of Cardiology Congress on Hearth Failure 21-24 May, Florence, Italy
  3. Bortolan G, Christov I, Simova I (2015) T-wave and QRS complex alternans during stress ECG testing in patients with diabete mellitus. Institute of Neuroscience Seminar, Pisa, Italy, 13-15 May, poster
  4. Vassilev D, Pehlivanova M, Aleksandrov A, Hasan M, Kostova E, Pavlov P, Golebiewski S, Gil R, Simova I, Christov I, Bortolan G, Gotcheva N (2011) Ischemia detection by intracoronary ECG after stent implantation in coronary bifurcation lesions. Transcatheter Cardiovascular Therapeutics Conference, November 7-11, San Francisco, USA, poster, J Am Coll Cardiol 2011 58: B81, TCT-298, http://content.onlinejacc.org/article.aspx?articleid=1147236
  5. Herrero GG, Gotchev A, Christov I, Egiazarian K (2005) Feature extraction for heartbeat classification using independent component analysis and matching pursuits, Int. Conf. Acoustics, Speech and Signal Processing, IEEE, ICASSP2005, Philadelphia, Pennsylvania, USA, 19-23 March, book 4, pp. 725-728.  (Cited: 30)
  6. Herrero GG, Gotchev A, Christov I, Egiazarian K (2004) Heartbeat classification using independent component analysis and matching pursuits, ed. University of Jyväskylä, Advanced methods for processing bioelectrical signals, Jyväskylä, Finland, October 2004, pp. 1-13. (Cited: 4)
  7. Gotchev A, Christov I, Egiazarian K (2002) Denoising the electrocardiogram from electromyogram artifacts by combined transform-domain and dynamic approximation method, Int. Conf. Acoustics, Speech and Signal Processing, ICASSP2002, Orlando, USA, 13-17 May, pp. 3872-3875. (Cited: 6)
  8. Dotsinsky IA, Christov II (1997) Detection of QRS complexes and ventricular ectopic beats in the electrocardiogram, ed Technische Universität Ilmenau, 42-nd international scientific colloquium, Ilmenau, Germany, 22-25 September, pp. 99-103. (Cited: 4)
  9. Dotsinsky IA, Christov II, Daskalov IK, Atanassova E (1994) High quality recording of noninvasive electrogastrograms, 5-th international symposium on biomedical engineering, Santiago, Spain, 26-28 September, pp. 171-172. (Cited: 1)
  10. Доцински И, Христов И, Даскалов И, Атанасова Е (1993) Отстраняване на смущения в електрокардиографски сигнали от повърхността на тялото. Втора национална научно-приложна конференция “Електронна техника 93”, с международно участие, том 1, Созопол, 29 септ. – 1 окт., стр. 78-83.
  11. Dotsinsky IA, Levkov C, Christov II, Pundjev V, Daskalov IK (1990) Microcomputer electrocardiographs, 48 Posiedzenie Naukowe Polskiego Towarzystwa Kardiologicznego, Katowice, 4-6 October, pp. IV-72. (само резюме)
  12. Dotsinsky I, Christov I (1998) Mains interference subtraction from ECG in case of accompanying tremor. ed. Technical University – Sofia, Seventh International Conference Electronics 98, Sozopol, 23-25 September, pp. 16-20. (Cited: 6)
  13. Christov II, Dotsinsky IA (1987) Digital elimination of 50 Hz interference from ECG signals, 7-th Hungarian Conference of Biomedical Engineering, Esztergom, September, pp. 85-87. (Cited: 4)
  14. Dotsinsky IA, Christov II, Pundjev V (1984) Amplification of the ECG signal, 6-th Hungarian Conference of Biomedical Engineering, Balatonfured, 18-20 September, pp. 122-124. (Cited: 2)
  15. Christov II, Gadev R, Daskalov IK (1981) A digitizer-microprocessor for echocardiography, 5-th Conference of Bioengineering, Budapest, 20-24 September, pp. 204-205.

Conference reports, published in national issues

  1. Симова Я, Христов И, Камбова Л, Bortolan G, Кътова Ц (2014) Векторкардиографски анализ на промените в площта на QRS комплекса и Т вълната по време на хемодиализа. 14th Int. Cardiological Congress, 2-5 October, Varna (poster), abstract in: Българска кардиология, 20, pp. 27-28
  2. Христов И, Bortolan G, Симова Я, Кътова Ц (2012) Влияние на захарния диабет върху алтернанса на Т вълната и QRS комплекса по време на стрес ЕКГ тест (Influence of diabetes mellitus on T wave and QRS complex alternans during stress test ECG) . 13th Int. Cardiological Congress, 4-7 October, Sofia (poster), abstract in: Българска кардиология, 18, (прил. 2), pp. 37.
  3. Христов И, Bortolan G, Симова Я, Кътова Ц (2012) Алтернанс на T вълната и QRS комплекса по време на стрес ЕКГ тест (T wave and QRS complex alternans during stress test ECG). 13th Int. Cardiological Congress, 4-7 October, Sofia (poster), abstract in: Българска кардиология, 18, (прил. 2), pp. 29.
  4. Трендафилова Е, Кръстева В, Didon JP, Александров A, Мудров Ц, Жекова И, Костова Е, Тошев И, Банкова А, Тасовска П, Андреева Т, Кънева Р, Гочева Н, Паскалева И, Христов И (2012) Сравнение на протоколи с ескалиращи и неескалиращи енергии при кардиоверсия на пациенти с персистиращо предсърдно мъждене – едноцентрово проучване. 13th Int. Cardiological Congress, 4-7 October, Sofia (poster), abstract in: Българска кардиология, 18, (прил. 2), pp. 19-20.
  5. Krasteva V, Jekova I, Mudrov N, Stoyanov T, Christov I, Matveev M (2009) Methods, algorithms and devices for cardiac electrostimulation (defibrillation and cardioversion), Научен семинар на ЦЛБМИ-БАН при международен одит, 9 July, 2009, София.
  6. Jekova II, Christov II, Todorova LP (2007) Difference based parameter set for local heartbeat classification: ranking of the parameters. ed. Technical University – Sofia, Sixteenth International Conference Electronics 2007, Sozopol, 19–21 September, pp. 49-54.
  7. Naydenov S, Donova T, Matveev M, Krasteva V, Christov I (2006) Високочестотна електрокардиография: оптимизиране диагностиката на острия миокарден инфаркт с ST-елевация. X Национален Конгрес по Кардиология, 27-29 Октомври, НДК, София. – награда за най-добър материал на Конгреса
  8. Levkov C, Mihov G, Ivanov R, Daskalov IK, Christov I, Dotsinsky I (2004) Subtraction Method for Powerline Interference Removing from ECG, ed. Technical University – Sofia, Thirteenth International Conference Electronics 2004, Sozopol, 22-24 September, book 1, pp 3-14. (Cited: 1)
  9. Jekova I, Christov I (2002) ECG data in identity card format ed. Technical University – Sofia, Eleventh International Conference Electronics 2002, Sozopol, 25-27 September, pp 119-123.
  10. Dotsinsky IA, Christov II (1996) AD conversion for ambulatory ECG recording, eds TU – Sofia, Bulgaria and TU – Delft, Netherlands, Fifth National Scientific Conference with international participation Electronics 96, Sozopol, 27-29 September, pp. 142-144.
  11. Dotsinsky IA, Christov II, Daskalov IK (1996) DC amplification and recording of biosignals, Seventh national conference on biomedical physics and engineering with international participation, Sofia, 17-19 October, pp.104-106. (Cited: 1)
  12. Dotsinsky I, Jekova I, Christov I (1999) Simulator for movements accompanying the emergency electrocardiogram recordings, ed. Technical University – Sofia, Eight International Conference Electronics 99, Sozopol, 23-25 September, pp. 28-31.
  13. Atanassova E, Daskalov IK Christov II, Atanassova A (1995) Non-invasive method for recording human electrogastrogram based on experimental investigations on dogs, Sixth Congress of the Bulgarian Physiological Society, Sofia, June 8-9, Acta Physiologica & Pharmacologica Bulgarica, Institute of Physiology, Bulg. Acad. Sc., vol. 22, 1/2, pp. 3.
  14. Доцински И, Христов И (1994) Един подход за получаване на многоканални електрокардиограми, Трета национална научно-приложна конференция “Електронна техника 94” с международно участие, Созопол, 28-30 септ., стр. 11-16. (Cited: 1)
  15. Доцински И, Христов И (1990) 3-байтово аналого-цифрово преобразуване, Първа национална научно-приложна конференция “Електронна техника 90” Дюни, 1-5 окт., стр. 254-257. (Cited: 1)
  16. Доцински И, Христов И (1985) Аналогово-цифрово преобразуване на електрокардиографски сигнали. Втора младежка научна конференция по биомедицинска техника с международно участие. Варна, Златни пясъци, октомври, стр. 8 (само резюме). (Cited: 1)
  17. Доцински И, Христов И Илчева А, Новаков Е (1985) Допълнителна защита на пациента срещу утечни токове от електрокардиографски усилватели. Юбилейна научна сесия “40 години ВМЕИ-София”, 25-27 септ., (микрофилмирани доклади ЦИНТИ), резюме стр. 34.
  18. Доцински И, Христов И (1985) Дигитайзер. Юбилейна научна сесия “40 години ВМЕИ-София”, 25-27 септ., (микрофилмирани доклади ЦИНТИ), резюме стр. 34.
  19. Христов И, Петкова М (1984) Система за ехо-ангиографски и катетеризационни изчисления с персонален компютър. Четвърта национална конференция по биомедицинска физика и техника с международно участие, София, ноември, (докладът е подпечатан от организаторите), резюме стр. 68.
  20. Доцински И, Христов И, Пунджев В (1983) Микропроцесорно устройство за постояннотоково усилване на електрокардиографски сигнали. Научна сесия ВМЕИ-София, 12-14 окт., (микрофилмирани доклади ЦИНТИ), резюме стр. 62.
  21. Христов И, Доцински И, Попов В, Пунджев В, Граматиков Б (1983) Микропроцесорно устройство за автоматизирана обработка на нистагмограми. Първа младежка научна конференция с международно участие, Варна, септ., стр. 19-22.
  22. Доцински И, Граматиков Б, Христов И, Пунджев В (1982) Случаен генератор за психофизиологични изследвания. 17-та научна сесия “Ден на радиото 82”, ВМЕИ-София, май, (депозирани доклади ЦИНТИ).

Patents

  1. Христов И, Доцински И и ЕМА “Инженеринг” ЕАД София (1995) Електрокардиографски усилвател. пат No 3372.

Transformation to a certificate of authorship

  1. Христов И, Доцински И, Пунджев В (1983) Електрокардиографски усилвател. No 36080.

Certificates of authorship

  1. Христов И, Доцински И, Даскалов И (1990) Устройство за потискане на дрейфа на нулевата линия на електрокардиосигнали. No 49955.
  2. Христов И, Доцински И (1985) Устройство за аналогово-цифрово преобразуване на електрокардиографски сигнали. No 40500. (Cited: 1)
  3. Христов И, Доцински И, Пунджев В (1983) Многоканален диференциален усилвател. No 36079. (Cited: 2)
  4. Христов И, Доцински И, Граматиков Б, Пунджев В (1981) Генератор за случайни времеинтервали. No 32557.

Last modified on 26 September 2012.

 

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