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1. Yildirim, G, Karakas, H.M. O8-8 Uncooled Microwave Ablation of Benign Thyroid Nodules: Long-Term Efficacy, Effects on Thyroid Functions. ACTA 2021 7th Asian Conference on Tumor Ablation. Tokyo 2021.

2. Karakas, H.M., Yildirim, G.,  Minimally Invasive Excision of Breast Masses under Ultrasound Guidance: Single Center’s Five-Year Experience on the Breast Lesion Excision System. CIRSE, 2021 Summit. Vienna, Austria. FP 13.

3. Karakas, H.M., Yildirim, G., Ozkaya, Y. A., Sener, E. Development of an artificial intelligence method to detect COVID-19 pneumonia in computed tomography images based on multi-planar reconstruction and convolutional neural networks. ECR 2021, March 3-7, 2021. Vienna, Austria. RPS 105H.

4. Yıldırım, G., Karakaş, H.M. “Uncooled microwave ablation method in thyroid nodules: our early period results”, PAIRS 2021 Virtual. February 26-27, 2021.

5. Yıldırım, G., Karakaş, H.M. “Endobiliary radiofrequency ablation in malignant biliary strictures: procedural steps and technical tips.”, 15th Annual Meeting of TSIR and EVIS 2020 International Joint Meeting, March 6-10, 2020, Antalya, FP-17 (2020)

6. Kahraman, A.N., Yildirim, G., Karakas, H.M. “How to scan pediatric patients in a dose excellence center? Current concepts and applications of modern dose management system in a EuroSafe Imaging Star (*****) pediatric hospital” “EuroSafe Imaging 2020 / ESI-11842. Vienna, Austria.

7. Yıldırım, G., Karakaş, H.M. “Endobiliary radiofrequency ablation in malignant biliary strictures: procedural steps and technical tips.”, 15th Annual Meeting of TSIR and EVIS 2020 International Joint Meeting, March 6-10, 2020, Antalya, FP-17 (2020)

8. M. Karakas, B. Cavli, H. Tekin, R. B. Pekar, C. Ozturk, L. Demirci, U. Özdamarlar, K. Katsari. Implementation of dose management system and evaluation of initial dose reference levels (DRLs) in a newly etablished Hospital: SBU Sehit Prof. Dr. #lhanVarank Sancaktepe Training and Research Hospital. EuroSafe Imaging 2019 / ESI-0080. Vienna, Austria.

9. H. M. Karakas, K. Katsari, R. B. Pekar, L. Demirci, C. Ozturk, F. E. Bahadir Ulger, A. N. Kahraman4, H. Tekin, B. Cavli. How to become a high-performance dose excellence center: Current concepts and applications of modern dose management system in SBU Fatih Sultan Mehmet Training and Research Hospital. “EuroSafe Imaging 2019 / ESI-0059. Vienna, Austria.

10. H. M. Karakas, B. Cavli, H. Tekin, R. B. Pekar, C. Ozturk, L. Demirci, Y. Bukte, K. Katsari.. Computed tomography dose reference levels (DRLs) at various levels of hospitals in Istanbul: Secondary public, tertiary public, pediatric tertiary public, and university hospitals' experiences. EuroSafe Imaging 2019 / ESI-0026. Vienna, Austria.

11. Karakaş, H.M., Karakas, S. “Source localization in human information processing via hybrid functional magnetic resonance imaging and electroecephalography”. 18th World Congress of Psychophysiology. Havana, Cuba, August 31-September 4, 2016, International Journal of Psychophysiology 108 (special issue):23 (2016).

12. Sagir Kahraman, A., Karakas, H.M., Kirimlioglu, H., Kahraman, B., Yilmaz, S., Kirimlioglu, V. “The assessment of hepatosteatosis in living-donor liver transplant: comparison of liver attenuation Index and histopathologic results”, ECR 2014, Vienna, Austria. Doi: 10.1594/ecr2014/C-0228 (2014).

13. Sancak, S., Ozarar, M., Sargın, M., Kan, Ö., Aslan, G., Aydın, H., Özdemir, A., Karakaş, H.M. “The iodine excretion rate and its effects on thyroid function and morphology during pregnancy in an iodine sufficient region”, 38th Annual Meeting of the European Thyroid Association. Santiago de Compostela, Spain. Eur Thyroid J, 3(Suppl 1):171 (2014).

14. Karakaş, H.M., Karakas, S. “Is there more to the lower performance IO in ADHD: preliminary findings from functional magnetic resonance imaging”. 16th World Congress of Psychophysiology. Pisa, İtaly, September 13-17, 2012, International Journal of Psychophysiology 85(3):294 (2012).

15. Karakaş, H.M., Talı, E.T., Karakas, S. “Integration of advanced structural and functional imaging techniques in epilepsy where conventional investigations are inconclusive”. 34th European Society of Neuroradiology Annual Meeting. Athens, Greece, September 17 - 20, (2009).

16. Karakaş, H.M., Onay, A., Baran, Z., Talı, E.T., Karakas, S. “Voxel-based morphometry on an uncontaminated sample does not indicate gray matter reduction in attention deficit hyperactivity disorder”. 34th European Society of Neuroradiology Annual Meeting. Athens, Greece, September 17 - 20, (2009).

17. Karakaş, S., Dogutepe Dinçer, E., Özkan Ceylan, A., Baran, Z., Karakaş, H.M., Talı, E.T. “Confounding effects of magnetic fields and gradient noise of MRI scanner on multimodal MR-electroencephalography”. 34th European Society of Neuroradiology Annual Meeting. Athens, Greece, September 17 - 20, (2009).

18. Mangina, C., Karakaş, S., Baran, Z., Ozkan-Ceylan, A., Doğutepe-Dinçer, E, Karakaş, H.M., Talı, E.T., Beuzeron-Mangina, H. “Investigation of the Mangina test with FMRI in children afflicted with ADHD-combined type”. 34th European Society of Neuroradiology Annual Meeting. Athens, Greece, September 17 - 20, (2009)

19. Karakaş, H.M., Celbiş, O., Harma, A., Alıcıoğlu, B. “Total body height estimation using sacrum beam distance in Anatolian Caucasians: multidedector computed tomography based virtual anthropometry”, Anatomist 2009 - 10th   Congress of European Association of Clinical Anatomy, September 2-5, 2009, İstanbul, P-291 (2009).

20. Karakaş, H.M., Harma, A., Alıcıoğlu, B. “Subpubic angle in sex determination: anthropometric measurements and analyses on Anatolian Caucasians using multidetector computed tomography datasets”, Anatomist 2009 - 10th   Congress of European Association of Clinical Anatomy, September 2-5, 2009, İstanbul, P-292 (2009).

21. Alıcıoğlu, B., Karakaş, H.M., Harma, A. “Sulcus nervi dorsalis penis/clitoridis: Virtual anatomic study using multidetector computed tomography”, Anatomist 2009 - 10th   Congress of European Association of Clinical Anatomy, September 2-5, 2009, İstanbul, P-284 (2009).

22. Alıcıoğlu, E., Uluçam, E., Karakaş, H.M., Harma, A. “Sex determination using the angle of crista phallica: anthropometric measurements of Anatolian Caucasians on multidedector coputed tomography datasets”, Anatomist 2009 - 10th   Congress of European Association of Clinical Anatomy, September 2-5, 2009, İstanbul, P-290 (2009).

23. Baran Z., Karakaş H.M., Karakaş, S. (September 2008). Mapping visual, auditory, sensory-motor modalities and emotional arousal. 14th World Congress of Psychophysiology. The Olympics of the Brain. International Journal of Psychophysiology, 69(3), 183 (2008).

24. Doğutepe Dinçer, E., Karakaş, H.M., Karakaş, S. (September 2008). Mapping linguistic and executive functions. 14th World Congress of Psychophysiology. The Olympics of the Brain. International Journal of Psychophysiology, 69(3), 183 (2008).

25. Karakaş S., Baran, Z. Doğutepe Dinçer, E., Özkan Ceylan, A., Tali, E.T., Karakaş, H.M. (September 2008). A hybrid technique of source localization using electroencephalography and structural magnetic resonance imaging: EEG/ERP-MRI. 14th World Congress of Psychophysiology. The Olympics of the Brain. International Journal of Psychophysiology, 69(3), 160 (2008).

26. Karakaş, H.M. “Recording and filtering neuroelectrical activity in hostile magnetic resonance imaging environment: Theory, implementation and comparison” 14th World Congress of Psychophysiology. The Olympics of the Brain. International Journal of Psychophysiology, 69(3), 159 (2008).

27. Karakaş, H.M. “Epilogue: Integration structural and functional MRI data with EEG” 14th World Congress of Psychophysiology. The Olympics of the Brain. International Journal of Psychophysiology, 69(3), 161 (2008).

28. Karakaş, H.M., Tali, E.T. “Principles of designing physiologically and psychometrically optimized tasks for functional magnetic resonance imaging” 14th World Congress of Psychophysiology. The Olympics of the Brain. International Journal of Psychophysiology, 69(3), 182-183 (2008).

29. Karakaş, H.M., Tali, E.T. “From research laboratory to the clinical field: simpler equipment, complex patients” 14th World Congress of Psychophysiology. The Olympics of the Brain. International Journal of Psychophysiology, 69(3), 184 (2008).

30. Özkan Ceylan, A., Karakaş, H.M., Karakaş, S. (September 2008). “Mapping learning and working memory. 14th World Congress of Psychophysiology. The Olympics of the Brain. International Journal of Psychophysiology, 69(3), 183 (2008).

31. Özkan Ceylan, A., Baran, Z. Doğutepe Dinçer, E., Karakaş, H.M. Karakaş, S. (September 2008). The experimental study of types of response inhibition specific to attention deficit hyperactivity disorder. 14th World Congress of Psychophysiology. The Olympics of the Brain. International Journal of Psychophysiology, 69(3), 292 (2008).

32. Karakas, S., Karakas, H.M., Baran, Z., Ozkan Ceylan, A., Dogutepe Dincer, E., Tali, E.T. “Analysis of the effect of magnetic fields on the amplitudes of the early and late cognitive potentials during FMRI,” Proc Intl Soc Mag Reson Med 16,3586. (2008).

33. Karakas, H.M., Karakas, S., Tali, E.T. “Identical stimuli but different cortical activations: FMRI study on active and passive oddball tasks”, P Proc Intl Soc Mag Reson Med 16,3591. (2008).

34. Firat, A.K., Sanli, B., Karakas, H.M., Erdem, G. “Effect of intravenous gadolinium-DTPA on diffusion weighted imaging”, ASNR American Society of Neuroradiology 2007, P-51, Chicago (2007).

35. Alkan, A., Sahin, I., Keskin, L., Karakas, H.M., Sertkaya Cikim, A., Karaca, Z., Turhan, N, Firat, A.K., Sigirci, A., Ulutas, O. “Obesity: diffusion weighted imaging features of brain”, Endocrine Abstracts (2007) 14 P260 European Society of Endocrinology, European Congress of Endocrinology 2007, 14 P260, Budapest, (2007).

36. Firat, Y., Sireci, S., Yakinci, C., Akarçay, M., Karakas, H.M., Firat, A.K., Kizilay, A., Selimoglu, E. “Isolated preauricular pits and tags: is it necessary to investigate renal abnormalities?”, 6th European Congress of Oto-Rhino-Laryngology Head and Neck Surgey, Vienna. European Archives of Oto Rhino Laryngology and Head & Neck, 264 (Suppl 1), 264 (2007).

37. Stegink Jansen, C.W., Hildreth, D, Kalayci, T., Karakas, H.M. “Perception severity of carpal tunnel syndrome: a comparison between patients from Turkey and the USA” 13th World Congress of Psychophysiology: The Olympics of the Brain, İstanbul. International Journal of Psychophysiology, 61 (3), 340 (2006).

38. Karakas, H.M., Altinok, M.T., Kadir, E., Stegink Jansen, C.W. “Correlations between ultrasonography of the median nerve and perceived symptoms ın patients with carpal tunnel syndrome”, 13th World Congress of Psychophysiology: The Olympics of the Brain, İstanbul. International Journal of Psychophysiology, 61 (3), 339 (2006).

39. Hascalik, M., Karakas, H.M., Celik, O., Firat, A.K., Hascalik, S. “Chronic pain and rat brain: microstructural cerebral changes revealed by diffusion-weighted magnetic resonance imaging”, 13th World Congress of Psychophysiology: The Olympics of the Brain, İstanbul. International Journal of Psychophysiology, 61 (3), 340 (2006).

40. Firat, A.K., Ugras, M., Karakas, H.M., Doganay, S., Baydinç, C. “Testis magnetic resonance spectroscopy: preliminary findings” ECR 2006 Viennna, European Radiology, 16 (Suppl. 1), B-310 (2006).

41. Firat, A.K., Karakas, H.M., Firat, Z.Y., Yakinci, C. “Quantitative evaluation of brain involvement in ataxia telengiectasia by diffusion weighted MR imaging” 43rd Annual Meeting American Society of Neuroradiology (ASNR), Toronto, (2005).

42. Okten, O.O., Tuncbilek, N., Karakas, H.M., Ince, Y., Sen, S. “Evaluation of endothelial function of normotensive and hypertensive subjects with flow-mediated dilatation”, ECR 2005, Viennna, European Radiology, 15 (Suppl. 2), C-1058 (2005).

43. Altinok, M.T., Baysal, O., Karakas, H.M., Firat, A.K. “Ultrasonographic evaluation of the carpal tunnel after provocative maneuvers” Radiological Society North America RSNA’04, Chicago, 698, (2004).

44. Çelik, Ö., Erdem, G., Hasçalık, Ş., Karakaş, H.M., Tamser, M. “Magnetic resonance spectroscopic comparison of the effects of resveratrol (3,4’,5-trihydroxy stilbene) to conjugated equine estrogen, tibolone and raloxifen in ovariectomized rat brains” 3rd International Congress on Menopause and Osteoporosis, P-20, Antalya, (2004).

45. Karakas, H.M., “General hemispheric assymetry in left-handed subjects: signal amplitude analysis of BOLD response in sensory motor task”, 12th World Congress of Psychophysiology: The Olympics of the Brain, Thessaloniki. International Journal of Psychophysiology, 54, 151 (2004).

46. Karakas, H.M., Karakas, S. “Learning of serial digits leads to frontal activation in functional magnetic resonance imaging: clinical implications”, 12th World Congress of Psychophysiology: The Olympics of the Brain, Thessaloniki. International Journal of Psychophysiology, 54, 17 (2004).

47. Tuncbilek, N., Ökten, Ö.Ö., Karakaş, H.M. “Dynamic contrast enhanced magnetic resonance mammography in inflammatory brest diseases”, International Schering Symposium on MR and CT imaging, Budapest, (2004).

48. Tuncbilek N., Karakas, H.M., Ökten, Ö.Ö., “Dynamic contrast enhanced MRI in the differential diagnosis of soft tissue tumors” ECR 2004, Viennna, European Radiology, 14 (Suppl. 2), C-659 (2004).

49. Altinok, T., Karakas, H.M. “The relation of flexor retinaculum laxity with age, gender and hand dominance” ECR 2004, Viennna, European Radiology, 14 (Suppl. 2), C-660 (2004).

50. Tuncbilek, N., Okten, O.O., Guldiken, S., Karakas, H.M. “The effect of body mass index on the ultrasonographic measurements of the portal venous system” ECR 2004, Viennna, European Radiology, 14 (Suppl. 2), C-946 (2004).

51. Tuncbilek, N., Okten, O.O., Karakas, H.M. “Ultrasonographic assessment of internal mammarian artery in the screening of radiotherapy induced coronary artery disease” ECR 2004, Viennna, European Radiology, 14 (Suppl. 2), C-931 (2004).

52. Tuncbilek N., Karakas, H.M., Ökten, Ö.Ö., “Dynamic MRI in determining histopathological prognostic factors of invasive breast cancers” ECR 2004, Viennna, European Radiology, 14 (Suppl. 2), C-202 (2004).

53. Ökten, Ö.Ö., Tuncbilek N., Karakas, H.M., “The value of qualitative and semiquantitative ultrasonographic findings in the differential diagnosis of superficial lymph node enlargements” ECR 2004, Viennna, European Radiology, 14 (Suppl. 2), C-682 (2004).

54. Tuncbilek, N., Guldiken, S., Okten, O.O., Arikan E., Karakas, H.M., “Ultrasonographic assessment of body fat distribution in type II diabetes mellitus of insulin resistant type and its relation to antrophometric measurements” ECR 2004, Viennna, European Radiology, 14 (Suppl. 2), C-097 (2004).

55. Tuncbilek, N., Karakas, H.M., Okten, O.O, Sezer, H.H., “Dynamic contrast enhanced magnetic resonance mammography in the determination of multicentricity in breast cancers” ECR 2004, Viennna, European Radiology, 14 (Suppl. 2), C-208 (2004).

56. Hatipoglu, O.N., Turut, M., Karakas, H.M. “Diagnostic value of expiratory high resolution computed tomography in chronic bronchitis”, European Respiratory Society Annual Congress 2003, New trends in thoracic imaging (2003).

57. Karakas, H.M., Hatipoglu, O.N., Tuncbilek, N. “The value of conventional and dynamic computed tomography in differential diagnosis of solitary pulmonary nodules”, ESTI 2003 European Society of Thoracic Imaging 11th Annual Meeting, Lausanne, Panel 53 (2003).

58. Tuncbilek, N., Karakas, H.M., Hatipoglu, N. “Dynamic magnetic resonance imaging in the TNM categorization of lung cancers”, ESTI 2003 European Society of Thoracic Imaging 11th Annual Meeting, Lausanne, Panel 52 (2003).

59. Tuncbilek, N., Karakas, H.M., Hatipoglu, N. “Magnetic resonance evaluation of vessel invasion in non-small cell lung cancers”, ESTI 2003 European Society of Thoracic Imaging 11th Annual Meeting, Lausanne, Panel 53 (2003).

60. Tasalı, N., Karakas, H.M., Arman, A.M., Celik, L., Karakas, S. “Mapping cognitive functions: fMRI localization of serial digit learning test”, ECR 2003, Viennna, European Radiology, 13 (Suppl. 1), C-0876 (2003).

61. Tuncbilek, N., Unlu, E., Altaner, S., Karakas, H.M., Cakir, B. “Dynamic MRI and angiogenesis of the colorectal tumors”, ECR 2000, Viennna, European Radiology, 12 (Suppl. 1), 364 (2002).

62. Unlu, E., Tuncbilek, N., Gocer, B., Karakas, H.M., Cakir, B. “Diffusion-weighted MR imaging of cystic intracranial lesions”, ECR 2000, Viennna, European Radiology, 12 (Suppl. 1), 467 (2002).

63. Karakas, H.M., Karakas, S. “fMRI mapping of motor-serial digit learning task in frontal lobe, methodological developments” EMBC 2001, İstanbul, 23rd Annual International Conference of the IEEE Engineering in Medicine and Biology Society Abstract Book, 140 (1-4) (2001).

64. Tasali, N., Ünlü, E., Cokal, N., Tatoglu, H., Karakas, H.M., Cakir, B. “Can we differentiate benign vs malignant vertebral fractures with diffusion-weighted MR imaging”, RSNA 2000, Chicago, Radiology, 217 (Suppl. 1), 683 (2000).

65. Karakas, H.M., Tasali, N., Unlu, E., Tuncbilek, N., Çakir, B. “Normal MR contrast enhancement of extraocular muscles: a quantitative analysis”, MAGMA 2000, Paris, Magnetic Resonance Materials in Physics, Biology and Medicine, 11 (Suppl. 1), 265-266 (2000).

66. Tasali, N., Karakas, H.M., Unlu, E., Tuncbilek, N., Cakir, B. “Asymptomatic choroid plexus cysts in the lateral ventricles: an incidental finding at diffusion-weighted MR imaging”, MAGMA 2000, Paris, Magnetic Resonance Materials in Physics, Biology and Medicine, 11 (Suppl. 1), 119-120 (2000).

67. Karakas, H.M. “Information processing in the human brain: simple and complex event-related functional magnetic resonance imaging approach”. Proc. ISIK 2000 Workshop on Biomedical Information Engineering, İstanbul, Boğaziçi University Press, 141-144, (2000).

68. Unlu, E., Tasali, N., Karakas, H.M., Tuncbilek, N., Cakir, B. “2D-TOF and 3D contrast-enhanced MR angiography (MRA) in occlusive diseases of internal carotid arteries”, ECR 2000, Vienna, European Radiology 10 (Suppl. 1), 435 (2000).

69. Karakas, H.M., Tasali, N., Unlu, E., Cokal, N., Cakir, B. “The value of magnetisation transfer on delineation and differentiation of intraaxial cranial lesions”, ECR 2000, Vienna, European Radiology, 10 (Suppl. 1), 408 (2000).

70. Tasali, N., Unlu, E., Cokal, N., Tatoglu, H., Karakas, H.M., Cakir, B. “Diffusion-weighted MR imaging of bone marrow”, ECR 2000, Vienna, European Radiology, 10 (Suppl. 1), 390 (2000).

71. Unlü, E., Tasalı, N., Cokal, N., Karakas, M., Cakir, B. “Occlusive diseases of aortoiliac and femoral arteries: contrast-enhanced 3D MR angiography (CE-3D-MRA)”, ECR 1999, Vienna, European Radiology 9 (Suppl. 1), 556 (1999).

72. Tasali, N., Cokal, N., Unlu, E., Tuncbilek, N., Karakas, M., Cakir, B. “MR urography in the assessment of urinary tract obstruction”, ECR 1999, Vienna, European Radiology, 9 (Suppl. 1), 456 (1999).

73. Karakas, M., Tasali, N., Unlu, E., Tuncbilek, N., Cokal, N., Cakir, B. “MR cholangiography in obstructive icters”, ECR 1999, Vienna, European Radiology 9 (Suppl. 1), 368 (1999).

74. Karakaş, H.M., Çakır, B., Brockhaus, A., Elger, C.E. “The role of the mamillary body in the propagation of the ictal activity”, Symposium Tertium Anatomiae Clinicae, Varna, Scripta Scientifica Medica, 30 (Suppl. 3), 68 (1998).

75. Karakaş, H.M., Ünlü, E., Tatoğlu, H., Tasalı, N., Çakır, B. “Three-dimensional computed tomographic evaluation of diastematomyelia”, Symposium Tertium Anatomiae Clinicae, Varna, Scripta Scientifica Medica, 30 (Suppl. 3), 69 (1998).

76. Tasalı, N., Ünlü, E., Çokal, N., Tatoğlu, H., Karakaş, H.M., Çakır, B. “Aneurysm of abberrant right subclavian artery arising from the diverticulum of Kommerell”, Symposium Tertium Anatomiae Clinicae, Varna, Scripta Scientifica Medica, 30 (Suppl. 3), 93 (1998).

77. Tatoglu, H., Ünlü, E., Çokal, N., Tunçbilek, N., Karakaş, H.M., Çakır, B. “Case report: Klippel-Feil syndrome type II”, Symposium Tertium Anatomiae Clinicae, Varna, Scripta Scientifica Medica, 30 (Suppl. 3), 95 (1998).

78. Altıntaş, K., Karakaş, H.M., Tekinsoy, B., Diren, H.B., Uluğ, H., Üçkardeşler, L. “The asymmetric fornix and mamillary body: clinical significance and technical considerations in mesial sclerosis patients demonstrated with MR and in amygdalohippocampectomy patients”, ARRS 1996, San Diego, AJR Am J Roentgenology, 3 (Suppl. 1), 72-73, (1996).