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Δρ. Λιάσης Νικόλαος

Ακτινολόγος


Ο Δρ. Νικόλαος Λιάσης είναι ιατρός Ακτινοδιαγνώστης με διεθνώς αναγνωρισμένη εξειδίκευση στο αγγειακό υπερηχογράφημα (καρωτίδες, φλεβικό και αρτηριακό σύστημα) και περισσότερα από 30 έτη εμπειρίας.

Είναι Αντιπρόεδρος της Affidea Ελλάδος, Επιστημονικός Διευθυντής του Affidea Central και Subspecialty Leader της Affidea σε ευρωπαϊκό επίπεδο.

Κάτοχος διδακτορικού με έργο στην απεικόνιση της καρωτιδικής αθηρωματικής πλάκας, έχει δημοσιεύσει εκτενώς σε διεθνή περιοδικά και διδάσκει σε ελληνικά και διεθνή προγράμματα υπερηχογραφίας.

Τομείς Εξειδίκευσης

  • Αγγειακό Υπερηχογράφημα / Doppler καρωτίδων & σπονδυλικών

  • Φλεβικό Υπερηχογράφημα & Θρόμβωση (DVT)

  • Περιφερικό Αρτηριακό & Φλεβικό Doppler άκρων

  • Ελαστογραφία καρωτιδικής αθηρωματικής πλάκας

  • Κοιλιακή αορτή & σπλαχνικά αγγεία

  • Υπερηχογραφικά καθοδηγούμενες επεμβάσεις

  • Διαγνωστική λεμφοιδήματος · POCUS

Πληροφορίες

Διαπιστεύσεις & Εκπαίδευση

Πτυχίο Ιατρικής

Ιατρική Σχολή ΑΠΘ (1978–1984)

Τίτλος ειδικότητας

Board Certified Radiologist (1992)

Διδακτορικό

PhD ΕΚΠΑ (2013) - Speckle Reduction Imaging στην καρωτιδική πλάκα, Α΄ Χειρουργική/Αγγειοχειρ., Λαϊκό

Μετεκπαίδευση

Thomas Jefferson Univ. Philadelphia (1996) · Utrecht/Ολλανδία (1994) · Φλωρεντία/Ιταλία (1993)

Επιστημ. εταιρείες

Γεν. Γραμματέας Ελλ. Εταιρείας Φλεβολογίας · Αντιπρ. Ελλ. Εταιρείας Αγγειολογίας · ESR/ECR · American & European Venous Forum · Ελλ. Ακτινολογική Εταιρεία κ.ά.

Επαγγελματική πορεία

  • 2021–σήμερα · Affidea Subspecialty Leader of Europe

  • 2020–σήμερα · Αντιπρόεδρος Affidea Ελλάδος & Επιστ. Διευθυντής Affidea Central

  • 2011–2020 · Medical Advisory Board Affidea · Ιατρικός Διευθυντής Affidea Ελλάδος

  • 2015–σήμερα · Research Fellow - Α΄ Χειρουργική Κλινική ΕΚΠΑ (Αγγειοχειρουργικό)

  • 1995–2006 · Διευθυντής Τμ. Υπερήχων & Αγγείων - 251 ΓΝΑ

Επιστημονική Αναγνώριση

Δημοσιεύσεις

21 σε διεθνή peer-reviewed περιοδικά (PubMed/DOI)

Ανακοινώσεις/Ομιλίες

200+ ελληνικά & 180+ διεθνή συνέδρια (ομιλητής/πρόεδρος)

Βιβλία

Συγγραφέας/συν-συγγραφέας 6 βιβλίων (π.χ. Color Doppler καρωτίδων & σπονδυλικών)

Διδασκαλία

ΠΜΣ (Θράκης, Θεσσαλίας, ΕΚΠΑ-Milan Bicocca) · tutor σε 70 workshops υπερήχων

Έρευνα

Horizon 2020 «TAXINOMISIS» (καρωτιδική νόσος) · Affidea Academy Ultrasound Course (Organizer/Lead)

Δημοσιεύσεις

  1. IL-1R/IL-6R blockade for null NLRP12 variant-carrying Takayasu arteritis. Argyropoulou OD, Marinakis NM, Charalampopoulos G, Tilemis F-N, Liasis N, Manoussakis MN. Rheumatology. 2025 Oct 25; keaf567. doi:10.1093/rheumatology/keaf567.

  2. Factors Associated with High-Risk Plaque Characteristics Among Patients with Medium to Severe Carotid Artery Stenosis.  Galyfos G, Charalampopoulos G, Karagiannis G, Liasis N, Koncar I, Siogkas P, Fotiadis D, Filis K, Sigala F.  Ann Vasc Surg. 2024 Jul 14;108:325-332. 

  3. Direct oral anticoagulants for deep vein thrombosis among patients with hereditary thrombophilia-A cohort study. Galyfos G, Chamzin A, Charalampopoulos G, Liasis N, Sigala F, Filis K. Phlebology. 2023 Oct;38(9):599-604. 

  4. Venous Thoracic Outlet Syndrome in Three Greek Children: a Single-Centre Experience. Clinical & Medical Cases. Dettoraki A, Charalampopoulos G, Michalopoulou A, Liasis N, Lykopoulou E, Maras D, Pergantou H.  2021; 2(1):1.

  5. Using ultrasound image analysis to evaluate the role of elastography imaging in the diagnosis of carotid atherosclerosis. Xenikou MF, Golemati S, Gastounioti A, Tzortzi M, Moraitis N, Charalampopulos G, Liasis N, Dedes A, Besias N, Nikita KS. Conf Proc IEEE Eng Med Biol Soc. 2015 Aug;2015:6313-6. doi: 10.1109/EMBC.2015.7319836.

  6. Recommendations for multimodal noninvasive and invasive screening for detection of extracranial venous abnormalities indicative of chronic cerebrospinal venous insufficiency: a position statement of the International Society for Neurovascular Disease. Zivadinov R, Bastianello S, Dake MD, Ferral H, Haacke EM, Haskal ZJ, Hubbard D, Liasis N, Mandato K, Sclafani S, Siddiqui AH, Simka M, Zamboni P; International Society for Neurovascular Disease. J Vasc Interv Radiol. 2014 Nov;25(11):1785-94.e17. doi: 10.1016/j.jvir.2014.07.024. Epub 2014 Sep 23.

  7. Predictors and clinical significance of progression or regression of asymptomatic carotid stenosis. Kakkos SK, Nicolaides AN, Charalambous I, Thomas D, Giannopoulos A, Naylor AR, Geroulakos G, Abbott AL; Asymptomatic Carotid Stenosis and Risk of Stroke (ACSRS) Study Group. J Vasc Surg. 2014 Apr;59(4):956-967.e1. doi: 10.1016/j.jvs.2013.10.073. Epub 2013 Dec 28.

  8. The size of juxtaluminal hypoechoic area in ultrasound images of asymptomatic carotid plaques predicts the occurrence of stroke. Kakkos SK, Griffin MB, Nicolaides AN, Kyriacou E, Sabetai MM, Tegos T, Makris GC, Thomas DJ, Geroulakos G; Asymptomatic Carotid Stenosis and Risk of Stroke (ACSRS) Study Group. J Vasc Surg. 2013 Mar;57(3):609-618.e1; discussion 617-8. doi: 10.1016/j.jvs.2012.09.045. Epub 2013 Jan 18.

  9. Multiple Sclerosis in a 23 Years Old Woman Treated by Venous Angioplasty for Chronic Cerebrospinal Venous Insufficiency: A DNA Study by Flow Cytometry. Kalodimou VE, Charalampopoulos G, Bekos V, Takis K, Ghiatas A, Liasis N, Tsamopoulos N.Cardiol Pharmacol 2013;2:110. doi: 10.4172/2329-6607.1000110

  10. First in vivo application of microwave radiometry in human carotids: a new noninvasive method for detection of local inflammatory activation. Toutouzas K, Grassos C, Drakopoulou M, Synetos A, Tsiamis E, Aggeli C, Stathogiannis K, Klettas D, Kavantzas N, Agrogiannis G, Patsouris E, Klonaris C, Liasis N, Tousoulis D, Siores E, Stefanadis C. J Am Coll Cardiol. 2012 May 1;59(18):1645-53. doi: 10.1016/j.jacc.2012.01.033.

  11. Macrophage infiltration and smooth muscle cells content associated with haptoglobin genotype in human atherosclerotic carotid plaques. Lioupis C, Barbatis C, Lazari P, Liasis N, Klonaris C, Georgopoulos S, Andrikopoulos V, Bastounis E. Angiology. 2012 Apr;63(3):178-83. doi: 10.1177/0003319711410051. Epub 2011 Jun 3.

  12. Asymptomatic internal carotid artery stenosis and cerebrovascular risk stratification. Nicolaides AN, Kakkos SK, Kyriacou E, Griffin M, Sabetai M, Thomas DJ, Tegos T, Geroulakos G, Labropoulos N, Doré CJ, Morris TP, Naylor R, Abbott AL; Asymptomatic Carotid Stenosis and Risk of Stroke (ACSRS) Study Group. J Vasc Surg. 2010 Dec;52(6):1486-1496.e1-5. doi: 10.1016/j.jvs.2010.07.021.

  13. Silent embolic infarcts on computed tomography brain scans and risk of ipsilateral hemispheric events in patients with asymptomatic internal carotid artery stenosis. Kakkos SK, Sabetai M, Tegos T, Stevens J, Thomas D, Griffin M, Geroulakos G, Nicolaides AN; Asymptomatic Carotid Stenosis and Risk of Stroke (ACSRS) Study Group. J Vasc Surg. 2009 Apr;49(4):902-9. doi: 10.1016/j.jvs.2008.10.059. Epub 2009 Feb 15

  14. The use of Speckle Reduction Imaging (SRI) Ultrasound in the characterization of carotid artery plaques. Liasis N, Klonaris C, Katsargyris A, Georgopoulos S, Labropoulos N, Tsigris C, Giannopoulos A, Bastounis E. Eur J Radiol. 2008 Mar;65(3):427-33. Epub 2007 Jul 2.

  15. New distal embolic protection device the FiberNet 3 dimensional filter: first carotid human study. Henry M, Polydorou A, Henry I, Liasis N, Polydorou A, Polydorou V, Demesticha T, Skandalakis P, Kotsiomitis E, Hugel M, Sedgewick J, Ruth G. Catheter Cardiovasc Interv. 2007 Jun 1;69(7):1026-35.

  16. Late spontaneous recanalization of acute internal carotid artery occlusion. Klonaris C, Alexandrou A, Katsargyris A, Liasis N, Bastounis E. J Vasc Surg. 2006 Apr;43(4):844-7.

  17. Severity of asymptomatic carotid stenosis and risk of ipsilateral hemispheric ischaemic events: results from the ACSRS study. Nicolaides AN, Kakkos SK, Griffin M, Sabetai M, Dhanjil S, Tegos T, Thomas DJ, Giannoukas A, Geroulakos G, Georgiou N, Francis S, Ioannidou E, Doré CJ; Asymptomatic Carotid Stenosis and Risk of Stroke (ACSRS) Study Group. Eur J Vasc Endovasc Surg. 2005 Sep;30(3):275-84.

  18. Unusual case of pulmonary hypertension. Kolilekas L, Gallis P, Liasis N, Anagnostopoulos GK, Eleftheriadis I. Respiration. 2006;73(1):117-9. Epub 2005 Jul 21.

  19. The Asymptomatic Carotid Stenosis and Risk of Stroke (ACSRS) study. Aims and results of quality control. Nicolaides A, Sabetai M, Kakkos SK, Dhanjil S, Tegos T, Stevens JM, Thomas DJ, Francis S, Griffin M, Geroulakos G, Ioannidou E, Kyriacou E; ACSRS Study Group. Int Angiol. 2003 Sep;22(3):263-72.

  20. The development of valvular incompetence after deep vein thrombosis: a 7 year follow-up study with duplex scanning. van Haarst EP, Liasis N, van Ramshorst B, Moll FL. Eur J Vasc Endovasc Surg. 1996 Oct;12(3):295-9.

  21. Radiological appearances of small intestinal leiomyomas. Gourtsoyiannis NC, Bays D, Malamas M, Barouxis G, Liasis N. Clin Radiol. 1992 Feb;45(2):94-103.

Βιβλία

  1. Co-author of “ Brain Stroke Disease”, Litsas Publications 2019.

  2. Author of “Color Doppler Ultrasound of the Carotid and Vertebral Arteries”, Paschalidis Publications.

  3. Co-author of “Transcranial Doppler Ultrasound in Evaluating Encephalic Function in Critically Severe Patients in the ICU”, Chapter: Transcranial Color Doppler, Author: Prof. Andreas Karampinis.

  4. Co-author of “Vascular Pathology of Chronic Renal Patient on Hemodialysis”, Chapter: The Role of Color Doppler Ultrasound.

  5. Co-author of “Venous Diseases” , (published by the 2nd Surgical Clinic of the University of Athens).

  6. Co-author of “Surgery”, published by 1st Surgical Clinic of the University of Athens under the auspices of Professor Elias A. Bastounis Chapter: Venous Diseases (pages 1734-1759).

Διδασκαλία

  1. 2022: Lecturer in the Postgraduate Course “Preoperative study with Color Doppler in candidate patients for vascular access (technique demonstration)”

  2. Democritus University of Thrace, Medical School (MSc).

  3. 2012-present: Regular invited speaker at Binational Post-Graduate Program: "Intravascular surgery" The Medical School of University of Athens in collaboration with the University of Milan, Bicocca)

  4. 2010-present: Regular invited speaker at Interstate Postgraduate Course "Advanced Ultrasonic Functional Imaging and Research for Prevention and Diagnosis of Vascular Diseases" of the Medical School of the University of Thessaly.

  5. 2010-present: Regular invited speaker at Postgraduate Lessons of Andrology of the Hellenic Society of Andrology

  6. 2010-present: Participated as tutor in 70 workshops on Vascular Ultrasonography in Greek and European-International Congresses

Έρευνα

  1. 2022: The use of B-Flow and other Vascular Techniques in the Assessment of Vulnerable Carotid Plaques. [White paper], GE Healthcare.

  2. 2018-present: Participation in “TAXINOMISIS project: A multidisciplinary approach for the stratification of patients with carotid artery disease” which has received funding from the European Union’s Horizon 2020 Research and

  3. Innovation Programme under grant agreement No 755320.

  4. 2015-present: Research Fellow at 1st Department of Surgery (Vascular Division) of the Medical School of the National Kapodistrian University of Athens, where I provide consultation on vascular ultrasonography and participate in research protocols.

  5. 2011-2014 : Research on texture analysis of the carotid plaque in collaboration with School of Electrical and Computer Engineering of the National Technical University of Athens.

  6. 2014-present: Research on strain elastography of carotid atheromatous plaque in collaboration with the Medical School of the University of Crete and the Hellenic Red Cross General Hospital of Athens.

  7. Participation in 3 clinical trials (Abbvie Pharmaceuticals and Evroiatriki Psychiko) regarding treatment for Hepatitis C Virus infection.

Πολυϊατρείο Affidea

Διαγνωστικό Κέντρο

Affidea Central

Βασιλίσσης Σοφίας 97
115 21 Αθήνα - Αττική
210 6770200
Διαγνωστικό Κέντρο

Affidea Central

Βασιλίσσης Σοφίας 97
115 21 Αθήνα - Αττική
210 6770200