Born July, 31st, 1945, son of DE WAELE A, -M.D., married to Ria DERDE, two sons (Frederik- Anthony).

-Graduated Medical Doctor, University Leuven and Ghent, Belgium – July 1971.

-Board certified Neurological Surgery – February 1977

-Founder and Head of Department of Neurological Surgery, A.Z. St.Lucas, - Ghent – Belgium since 1982

Special interests in

Microvascular brain surgery -

Skull base- vascular – tumor surgery –

Microvascular decompression on cranial nerves -

Pituitary = Hypohpysis tumor surgery -

Acoustic neuroma surgery /SMVN – Meniere surgery -

Spine surgery :anterior lumbar spine surgery. Degenerative spine/tumor surgery.

Member of :

-World Federation of Neurological Societies (WFNS) -

-Congress of Neurological surgeons (USA) -

-European Skull Base Society (ESBA). -

-Société de Neurochirurgie de Langue Française

-Dutch Skull Base Society -

-Belgian Society of Neurological Surgery

-Italian Neurosurgical Society

Committee : -Co-Director of International Neurosurgery Education and Research Foundation (INERF) USA.

- Founder - Co-Director F.R.I.E.N.D.S. surgical courses -Boras – Sweden .

-Guest Professor at Un. M.C. TJIANJIN – China.

-Guest Professor at Beijing Shijing shan teaching hospital Beijing Capital Medical University

-Guest Professor Guangzhou South medical University hospital 3th aff.-China

Publications :30

Recent – co-author publications :

- Middle cranial fossa approach

- Extradural middle fossa approach. Proposal of learning method : the rule of two fans

- Hemilingual spasm : a new neurosurgical entity ?

- Benign metastasizing leiomyoma to skull base and spine

(citations : 14 times by 14 publications )

SCIENTIFIC PRESENTATION - PAPERS - TO BELGIAN SOCIETY OF NEUROLOGICAL SURGEONS :

-1979 : Extracraniële – intracraniële bypass anastomosen. Persoonlijke ervaring van 21 gevallen.

-1980 :Indicatie en gebruik van Laser in de Neurochirurgie. Persoonlijke bijdrage en ondervinding.

-1981 : Succesvolle en indirecte behandeling van een reuze-aneurisma cerebri door : 1. Extracraniële – intracraniële bypass anastomose en 2. Ligatuur van de A.Carotis Interna (hals).

-1981 : Cervicale discopathieën : een overzicht van 80 operatief behandelde cervicale discopathie letsels volgens de techniek van Cloward. Persoonlijke bijdrage en ondervinding.

-Maart 1991 : VSP placement system (Steffee) : een betere techniek in stabilisatie van de lumbale spina L3 tot S1. Persoonlijke bijdrage en ondervinding.

-Maart 1992 : lateral orbital Keyhole approach for aneurysms – (persoonlijke bijdrage – video).

-Maart 1994 :

1. Skull base approaches : cranio cervical junction tumors (ELITE).

2. Craniële reperage en positioneringssystemen voor ruimte innemende processen van de convexiteit – Stereopraxie.

-Maart 1995 :

1. Microvasculaire decompressie voor trigeminusneuralgie – technical note

2. Cerebraal hemangiopericytoma (two cases).

-Maart 1996 : Skull base approaches : orbitozygomatic approach to cavernous sinus lesions; -Maart 1997 :

1. Neuronavigatie – SMN in neurochirurgie – cerebrale pathologie.

2. Laparascopische endoscopische anterieure lumbale intersomatische fusie : nieuwe techniek voor spinale stabilisatie

- Maart 1998 : Modified open door transfacial approach for midline skull base tumors.

-Maart 1999 :

1.VERTEBROPLASTIE : nieuwe techniek in behandeling van wervelzuiltumoren, en -frakturen. 2. SKULL BASE SURGERY : Bifrontal transbasal approach. -Maart 2000 : Deep brain stimulation – STN bij Parkinson-bewegingsstoornissen. -Maart 2001 : - 1.An unusual intracranial tumor – Diagnostic and neurological procedures. – 2. Deep Brain Stimulations : Dystonia. -Maart 2002 : 1. Pretoclival tumors : how to choose the best approach 2. 5 year experience in aneurysm coiling 3. Benign metastasizing Leiomyoma of the nervous system Maart 2003 : 1.Awake craniotomy in brain tumor surgery 2.Management of trigeminal neuroma 3.Preliminary results of the dynamic lumbar disc prothesis (Prodisc) : a study of 65 cases. Maart 2004 : 1. Jump anastomosis N7-N12 (facialis hypoglossus : behandeling voor facialisparalysis) 2.N.Vestibularis Superior sectio als behandeling voor onbehandelbare en therapieresistente ziekte van Menière - 3. Skull Base Surgery : transoral approach : indications and technique - 4. Subependymoma fossa posterior : case reports (2). Maart 2005 : 1. Use of 5-ALA induced porfyrine fluorescence guidance in resection of high grade gliomas - 2. Chordoma of the sacrum : two case reports - 3. Percutaneous pedicle screw fixation : indications and surgical technique - 4. Surgical approach to glomus iugulare tumors : the primary treatment – 5. Multiple spinal metastases of a glioblastoma multiforme : a case report - 6. European multicenter prospective clinical investigation – Prodisc C : preliminary results Maart 2006 : -two step surgery for large intracranial skull base tumors. Maart 2008 : - Facial Nerve – Gen. Ganglion Schwannoma. ONE DAY SYMPOSIUM DEPARTMENT NEUROSURGERY – A.Z. St.LUCAS – GHENTBELGIUM: October 1991 : 1ste Symposium – Neurochirurgie – A.Z. St.Lucas – Gent topics : 1. Stereotaxie 2. Backpain. October 1992 : 2de Symposium – Neurochirurgie – A.Z. St.Lucas – Gent . topics 1. Cervicobrachialgie 2. Trigeminal Neuralgia. April 1994 : 3de Symposium - Neurochirurgie – A.Z. St.Lucas – Gent. topic: Subarachnoidal Hemorrhages. (20 NE). November 1995 : 4de Symposium - Neurochirurgie – A.Z. St.Lucas – Gent. topic: Brain Tumors - anno 1995. May 1997 : 5de Symposium - Neurochirurgie – A.Z. St.Lucas – Gent. topic: Neuronavigation in Neurosurgery. May 1998 : 6de Symposium - Neurochirurgie – A.Z. St.Lucas – Gent. topic : Pain – DCS – Non-invasive pain therapy. November 1998 : 7de Symposium – Neurochirurgie – A.Z.St.Lucas – Gent. topic : Microvascular Decompression for cranial nerves. April 1999 : 8ste Symposium Neurochirurgie – A.Z. St.Lucas – Gent. topic: Deep brain stimulation – Parkinson. September 1999 : 9de Symposium Neurochirurgie – A.Z. St.Lucas – Gent topic: Interventional neuroradiology. September 2000: 10de Symposium Neurochirurgie A.Z. St.Lucas - Gent topics: Multidisciplinary functional neurosurgery Skullbase surgery. September 2001 :11de Symposium Neurochirurgie AZ St.Lucas - Gent topics :trends in spine surgery dynamic stabilisation – disc prosthesis surgery. April 2002: 12de Symposium Neurochirurgie AZ St.Lucas – Gent topic: awake sleep surgery for brain tumor ( H.Colle, MD.) March 2003 : International workshop on Kyphoplasty : organiser Dr H. Fransen and Dr. L.F. De Waele ( NeuroRadiology and Neurosurgery ) April 2004 : International Congres : topic : The Speeking Brain ( dr H. Colle ) April 2004: Life Surgery : cervical disc prosthesis (Prodisc C) with Prof. Bertagnoli R. February 2005: Promis Congress (ICC- GENT) : topic: procedures of minimal invasive spine therapy ( H Fransen ,M.D.-L.De Waele MD) November 2005: International course – workshop topic : Life surgery for Cervical and Lumbar prodisc prosthesis, (R. Bertagnoli) – April 2006 : Life surgery for cervical disc prosthesis (INTERNATIONAL COURSE). April 2006: Promis : International Symposium ( H Fransen , M.D. – L.F. De Waele , M.D.) topic :minimal invasive spine therapy April 007: Symposium Neurosurgery: topic :multidisciplinary treatment hand-shoulder -arm pain. April 2008: Multidisciplinary Symposium topic: -facial pain -trigeminal neuralgia March 2009 : Symposium Neuro-oncology .( H. Colle M.D., - F. Bouttens , M.D.) SCIENTIFIC PUBLICATIONS : -Oktober 1972 : Medikon : Surgical treatment of Intracranial Aneurysms. -Juli 1973 : Internationaal Tijdschrift voor Praktische Therapie : Oriëntatiestudie Piracetam. -Oktober 1974 : Arts en auto : alcohol and traffic accidents in Belgium : a Scientific Study. -April 1976 : Tijdschrift voor Geneeskunde : Diagnose middelen aangewend bij patiënten met een craniocerebraal trauma. -Oktober 1977 : Medikon : Le spasme des artères cérébrales dans les hémorragies méningées secondaire à la rupture d’anévrysme intracranien. -April 1978 : Tijdschrift voor Geneeskunde ; Primair suprasellair ectopisch pinnealoma – (atypische teratoma) -1978 : Medikon : Maligne hersentumoren - een analyse van 225 gevallen. -1978 : Ars Medici : Klinische studie met Minocin I.V. in de neurochirurgie. -1980 : Acta Neurologica : Microvasculaire decompressie van craniële zenuwen : trigeminusneuralgie en faciaal tic). -December 1980 : “Cerebrovasculaire stoornissen en hun behandeling”. – “Cerebrale neurotraumatologie”. Uitgave U.C.B. – Farmaceutische sector. -Juni 1981 : Springer Verslag : The Cranial Nerves : Optic glioma. -Okober 1981 : Neurologia Medio-Chirurgica (The Japan Neurosurgical Society). Successful treatment of a Giant cerebral aneurysma – not by Direct approach and clipping. -1982 : Co-auteur van het boek : “Leerboek der Neurochirurgie” – Story Scientia (leerboek 250 blz. eigen klinische ervaring en illustratie). -December 1982 : Belgische Medische Acutaliteiten. “Chronisch subduraal hematoma bij bejaarden”. -Juli 1983 : MEDITEL : (Medische Televisie) Cerebrale spoedgevallen (Video-casette). -September en oktober 1983 : Belgische medische actualiteiten : Histologische classificatie van de cerebrale tumoren . -Januari 1986 : Clinical Neurology 1 – 1986 : “Enterogenous cyst of the cauda equina”. -Mei 1987 : Tijdschrift voor Geneskunde : Medullo- en radiculopathieën door cervicale spondylose. -Juni 1990 : Hospimedica Vol III nr. 3 : Biocompatible Orthopedic Polymer use in orthopedics and neurosurgery. - Juli 1998 : Tijdschrift vr Geneeskunde : N.Trigeminusneuralgie – een neurochirurgische entiteit. -1998 : Tempo – SMN- Neuronavigation - -2001 : Tijdschrift voor Geneeskunde : Vertebroplastie. - -2001 : Eos : Neurochirurgie SMN -=Surgical Microscope Navigation ( H. Collle ,M.D.) -2001 : Neuron (vol 6 nr 4) : MRI bij patiënten met trigeminale neuropathie. –(M. Lemmerling ,MD.) -Juli 2002 : Tijdschrift voor Geneeskunde : Het Eagle syndroom. – -2002 : Images in clinical radiologie (J.B.) : Spinal intramedullary arteriovenous malformation – -2002 : Journal of Neurosurgery (97) : hemilingual spasm : a new neurosurgical entity. –(D.De Ridder MD.) -Juli 2003 : Clinical Neurology and Neurosurgery (105(3) : 170-4) : Benign metastazing leiomyoma of the nervous system : report of 2 cases. - -Okt 2003 : Tijdschrift van Geneeskunde : Epidurale brucellose als oorzaak van lumbo-ischialgie. -Juli 2004 : Tijdschrift van Geneeskunde : Postoperatieve resultaten van de mobiele lumbale discusprothesen. - -2004 : Tijdschrift van Geneeskunde : Tuberculose in de neurochirurgie en actuele pathologie. PARTICIPATION – MEETINGS AND CONGRESSES. -Mei 1972 : Maligne Hersentumor – Leiden (Nederland). -Juni 1972 : Society for research into hydrocephalus and Spina Bifida – Rotterdam (Nederland). -Januari 1973 : Réunion de la Société de Neurochirurgie de la langue Française - Courchevel (France) -Mei 1974 : Joint Meeting of te Sociedad Luso-Espagnola de Neurochirurgia van de Nederlandse Vereniging voor Neurochirurgen – Utrecht (Nederland). -Mei 1974 : Congres Traffic Medecine – Liège (België) -November 1974 : Symposium : Reanimatie van craniocerebrale traumata – Gent -1975 : Congres Traffic Medecine – Charleroi. -Februari 1978 : Neurosurgical Training and educaters Program at the Cook County Graduate School of Medecine – Chicago – III – U.S.A. – 104 hours A.M.A. – Catergory I -September 1978 : Jeruzalem : 6th International Meeting of Pediatric Neurosurgery. -Juni 1979 : Williamsburg (W.Virginia U.S.A.) : Internation.Meeting on Intracranial Pressure (I.C.P.). -December 1979 : Continuing Medical Education activities Midas Rex, Fort Worth, Dallas (Texas , U.S.A.) -Juni 1980 : Symposium on Cranial Nerves, Hannover, W.Germany. -September 1980 : Symposium on Microvascular Neurosurgery and Cerebrovascular desease. Wenen – Oostenrijk -December 1980 : New York : Postgraduate Medical School, Continuing Training and Postgraduate. -Maart 1981 : Hannover (Prof. Samii) – Neurosurgical Clinic City, Hannover - Neurosurgery on Peripheral nerves. -Oktober 1981 : Rotterdam : Neurotraumatologie (Dykzigt Ziekenhuis) . -November 1982 : Lausanne (Zwistersland) – Prof. Naracas : Micro-neurochirurgie van de Plexus Brachialis -November 1983 : Boston (U.S.A.) – Harvard Medical School – Postgraduate. -April 1984 : San Francisco (U.S.A) : American Association of Neurological Surgeons (AANS) – annual meeting. -Oktober 1984 : Wenen – European Society of Pediatric Neurosurgery – annual meeting -Juli 1985 : Toronto (Canada) : 8th intern. Congress of Neurological Surgeons. -April 1986 : Denver (Colorado – U.S.A.) : American Association of Neurological Surgeons (AANS) – annual meeting. -September 1986 : New Orleans (U.S.A) : Congress of Neurological Surgeons – annual meeting -Oktober 1988 : Seattle (Washington – U.S.A) : Congress of Neurological Surgeons- annual meeting. -December 1988: San Francisco (U.S.A) : American Back Society – annual meeting -Oktober 1989 : New Dehli (India) : 9th International Congress of Neurological Surgery -Februari 1990 : Cleveland (Ohio) (U.SA.) : Workshop spine and arthritis Center Prof. dr. A.Steffee M.D. -Mei 1990 : Wenen (21-25mei) : International Symposium on the processes of the cranial midline. -Juni 1990 : Tokyo (Japan) : 12 – 26 juni ) : Micro Neurosurgical training - Mitsui Memorial Hospital – Tokyo –Japan - Prof T. Fukushima -Oktober 1990 : Los Angeles (U.S.A) (20 – 25 oktober) : annual meeting. Congress of Neurological Surgeons -Maart 1991 : Phoenix (Arizona – U.S.A) : Micro-neurosurgical Training of Vascular Processes. Prof. Dr. R. Spetzler – Barlow Neurological Institute . -April 1991 : Workshop Anspach. Visit to Institute -Juni 1991 : Tokyo (Japan) : 1st Asian Oceanian Skull Base Congress. -Oktober 1991 : Orlando (U.S.A) : Annual meeting of Congress of Neurological Surgeons. -Februari 1992 : Ljubjlana (Slov.) – Prof. V.V. Dolenc : Microneurosurgical training on cavernous sinus surgery -Juni 1992 : Verona (It. ) : New trends in management of cerebrovascular Malformations (congress) - Oktober 1992 : St Louis , Missouri (USA): Prof. Dr. Al Mefty :Surgical approaches to the skull base PAWS =Cadaver hands on Workshop. -November 1992 : Washington DC (USA) :CNS Congress of neurological surgeons annual meeting- -Mei 1993 : University South California -Los Angeles –(USA) – Training skull base surgery (Prof. T. Fukushima – Prof . St. Giannotta) -Juni 1993( 8-12) : Brussel : 43ième Congrès de la Société de Neurochirurgie de langue française. -September 1993 – London : (Prof. A.Crockard) – Cadaver Hands on Skull base workshop. -Oktober 1993 (14-16) USA – Los Angeles : Cadaver hands on workshop : Skull base surgery – training. -Februari 1994 : Ljubljana (Slov.) University : Skull base surgery – training. Prof.Vinco V. Dolenc. -September 1994 : Universiteit Utrecht Nederland : Nederlandse Vereniging voor schedelbasischirurgie. -September 1994 (27-29) : St.Louis (Miss.) USA : Cadaver hands on skull base surgery. -October 1994 (1-6) : Chicago (III) USA – Annual Meeting CNS. -Februari 1995 : Ljubljana (Slov.) – Prof.V.V.Dolenc – University Microneurosurgical training on skull base. -Juni 1995 : Pittsburgh – (USA- Penn.) : Symposium on minimal invasive Neurosurgery. (T.Fukushima – J.Maroon) -September 1995 : Univ.Maastricht (Nl) : Prof.Beuls : Cadaver hands-on workshop skull base techniques faculty guest - -Oktober 1995 : Barrow neurologic Intistute Phoenix (AZ - USA) : Dr. R.Spetzler – Dr. V.V. Sontag : Microvascular neurosurgical training (visit) . -December 1995 : Pittsburgh (Penn. – USA) : Symposium on neurovascular surgery T.Fukushima – J. Bailes -Januari 1996 : St.Louis (univ.) – (Miss. – USA) : Cadaver hands-on workshop Neurosurgical approach to carotid artery. ( Prof Chr Loftus) -PAWS -Mei 1996 : Pittsburgh (Penn- USA) : Cadaver hands-on workshop – skull base techniques – T. Fukushima (faculty guest) -September 1996 : Maastricht –University. (Nl) : Prof. Beuls : Cadaver hands-on workshop Neurosurgical techniques (faculty guest). -Oktober 1996 : Utrecht – Univ.(Nl) : Skull base techniques. Presentations : - Skull base Surgery : :Orbitozygomatic approach : Lateral Orbital Keyhole approach for aneurysms -November 1996 : Pittsburgh (Penn. USA) T. Fukushima : Cadaver hands-on workshop Skull base (faculty guest). -Maart 1997 : Panpacif. neurosurgical Congress Mauï-Hawaii – USA : C.P. – angle tumor – Presentation - faculty guest. -April 1997 : Pittsburgh ( Penn -U.S.A.) – T. Fukushima : cadaver hands-on workshop Skull base technique – faculty guest -Juli (3-5) 1997 : Maastricht – Nederland – (Prof.Beuls) – Universitair ziekenhuis Cadaver hands-on workshop – skull base technique – faculty guest -Juli (6-11) 1997 : Amsterdam (The Netherlands )-– 9de Internationaal World Congress of Neurosurgery. -September 1997 :New Orleans –( USA)– Congress of Neurolofgical Surgeons -annual meeting. -Okober 1997 : Cadaver hands-on workshop – Pittsburgh – (USA) - faculty guest -November 1997 : Stockholm Karolinska Hospital (27-28-29) : workshop - Petroclival meningeomas – skull base surgery. -Februari 1998 (5- 6 – 7) : Workshop Phoenix (Ariz.) – (USA)- B.N.I.. - Thorascopic Spinal surgery (C. Dickman; V. Sonntag). -Mei 1998 : Canary Islands : 8th World pain Congress. Lecture -Oktober 1998 (3-8) : Seattle (USA) Congress of Neurological Surgeons : Annual meeting - December 1998 (5-12) : Phoenix – USA - Dr.R.Spetzler =Microneurosurgical training -Maart 1999 : Aspen –USA – Neurosurgical prospects for 21st century =2nd Panpacific Neurosurgical Congress – Presentation = invited faculty - November 1999 : Boston (USA) Annual meeting Congress of Neurological Surgeons - Maart 2000 : KONA(Hawaii) –( USA ) 3th Panpacific Neurosurgical Congress :Presentation + faculty guest - Mei 2000 : West Palm Beach – USA : Advanced skull base workshop Faculty guest. - Juni 2000 : EMCT Antwerp (B): Advances in spine surgery Faculty guest + presentation - September 2000 – San Antonio – Tex-(USA):Congress of Neurologicanl Surgeons : annual meeting. - November 2000 : West Palm Beach – (USA) :Advanced Skull Base Workshop- Faculty guest – Cadaver hands- on presentation - Februari 2001 - Maastricht (Nl) – Skull base workshop - hands-on cadaver. Faculty guest – course codirector -April 2001 : Duke University – North Carolina (USA) International Symposium on cranial nerves and skull base tumors – Invited faculty – Lectures -June 2001 : West Palm Beach (USA) : advanced skull base workshop – Faculty guest – presentation -September 2001 : San Diego – Congress of Neurological Surgeons – annual meeting 2001 -December 2001 : West Palm Beach (USA) – advanced skull base workshop – Faculty guest . -Mei 1-4/2002 : West Palm Beach (USA) – advanced cadaver skull base workshop – Faculty guest. -Juni 1-3/2002 : International cadaver skull base workshop (Marseille) – Faculty guest. -Sept. 21-26/2002 : Philadelphia (USA) :52nd Congress of neurological Surgeons :annual meeting. -Nov. 4-5/2002 : AZM Maastricht (NL) Diepenbeek : 5th Hands on cadaver skull base workshop – Course CO-Director -Nov. 21-24/2002 : West Palm Beach (USA) - advanced skull base cadaver hands on workshop - Faculty . -Febr. 22-28/2003 : 4th International Pan Pacific Neurosurgery Congress – Maui (Hawaii-USA) – Faculty . -Mei 15-17/2003 : West Palm Beach (USA) – advanced skull base cadaver hands on workshop – Faculty -Mei 26-27/2003 : Torino (Italy) : advances nella chirurgia – mini invasiva del basicranio – Faculty guest – -Okt. 18-23/2003 : Denver (Colorado) USA : 53nd Congress of Neurological Surgeons : annual meeting. -Nov. 16-18/2003 : West Palm Beach (USA) : advanced skull base cadaver hands on workshop – Faculty – -Dec.11-14/2003 : VIP Visit Memphis (Tenn) USA : visit Medtronic. -May 2-5/2004 : Karolinska University Hospital Stochkholm (Sweden) : Honored Guest : Skull Base cadaver hands on workshop -May 6-10/2004 : West Palm Beach (USA) :Cadaver Hands on Workshop Skull Base Surgery- Faculty -May 24-05/2004 : Napoli (University Frederico II (Italy) : Endoscopic Pituitary Surgery : Cadaver Hands workshop (Prof. P. Cappabianca) -October 16-23/2004 : San Francisco USA –54th Annual CNS meeting. -December 20-27/2004 : West Palm Beach (USA)-Advanced Cadaver Hands-Skull base Course- Faculty -February 20-27/2005 : Pre-Olympic International neurosurgical wintermeeting – Sestriere– Italy- Faculty -May 12-14/2005 : W.Palm Beach (USA) : Advanced cadaver hands-on skull base course.–Faculty -June 30-July 2/2005 : Warsaw Univ.(Poland) :IV conference Anatomy/Surgical Techniques in central Skull base lesions – Invited faculty guest -November, 7 – 9, 2005, Memphis (Tennessee) –Medtronic – VIP visit -November, 17-19, 2005, West Palm Beach (USA) :Advanced Cadaver Hands on Skull Base course : Co-Director – Invited Faculty -December 17-19, 2005, Torino (Italy) : Cadaver Hands on Skull Base Workshop : Invited Faculty guest -January 21-28-2006 : Waikolea Village – Hawaï(USA)– 5th Pan Pacific-Mnt. Bandai – joint convention Invited Faculty guest -April 26-29/2006 : Roma- Italy St Andrea University Hospital (La Sapienza) : Lumbar disc prosthesis surgery and Skull base meeting – Invited faculty -May 11-13/2006 : West Palm Beach (USA) : Co-Director of advanced cadaver hands-on skull base workshop -June29-30/2006 : Sintra (Portugal) – Summer University meeting. -September 2006 : Ljubljana (Slo) : Prof V. Dolenc :cavernous sinus surgery symposium – Invited guest -November 2006 :West Palm Beach (USA ):co-director of advanced cadaver hands-on skull base workshop -Maart 2007 : West Palm Beach (USA) : cadaver hands-on skull base workshop on endoscopic pituitary surgery ( Prof D. Kelly – A. Kassam – P. Cappabianca- Ch. Teo ) -April 2007 :Duke University Neurosurgery and Carolina Neuroscience Institute for skull base surgery (Raleigh – Durham – N. Carolina –USA) = Invited faculty Guest -May 2007 : West Palm Beach (USA) :Co-Director of advanced cadaver hands-on skull base workshop. -June 2007 : Roma (Italy) : summer University – spine surgery : trauma tumor degenerative spine. -September 2007 : Como (Italy) : Italian Advanced cadaver hands-on skull base workshop –invited faculty -November 2007 :West Palm Beach( USA) :Co-Director advanced cadaver hands-on skull base workshop. -February 2008 :West Palm Beach (USA) :cadaver hands on workshop on endoscopic pituitary and parasellar surgery ( Prof D. Kelly – Ch. Teo- A. Kassam – P. Cappabianca) -March 2008 : Invited Guest Professor Un. Med Center Tjanjin-China : International meeting on advanced spine surgery - Invited Faculty Lectures in Hangzou-City Lectures in Tjanjin-City -May 2008 : West Palm Beach( USA) : Co-Director of advanced cadaver hands-on skullbase workshop. -June 20-22/2008 : Roma –It :International cerebrovascular and skullbase workshop. Faculty member – Scientific committee member- Chairman -lecture. -Sept. 2008 : Orlando – Flo -(USA) : CNS – annual meeting. -Oct. 2008 : Como- Menaggio(It) : Italian Advanced cadaver hands-on dissection course - Honoured guest. -Febr. 2009 :West Palm Beach (USA ): cadaver hands-on workshop endoscopic pituitary and parasellar surgery ( Prof D. Kelly – A. Kassam – P. Cappabianca- Ch. Teo ) -February 2009: West Palm Beach( USA): Weill Cornell University New York – skull base cadaver hands on Workshop (3D) - . -March 22-26 - 2009 :Bejing-China :Invited Guest Professor : First international lumbar spine congress . -April 15 -18 -2009 : Rotterdam (NL): 9th European skull base meeting : Invited Faculty skull base course -April 22-25- 2009 : Boras (Sweden ) :Course Director :first international Cadaver hands on skull base for young neurosurgeons -May 2009 :West Palm Beach (USA):Co-Director international advanced cadaver hands on skull base course -September 24-27 / 2009 Menaggio- Italy : Honoured Guest Italian advanced skull base workshop.

-October 6-10 /2009 : Tokyo –Osaka (Japan) :Invited Guest skullbase surgeries and visit Cyberknife .

-October 24 -28-2009 :New Orleans –(USA ):annual meeting of Congress of Neurological Surgeons -October 2009 :West Palm Beach (USA) :Co-director of advanced cadaver hands-on skull base workshop. -February 2010: West Palm Beach( USA): Weill Cornell University New York – skull base cadaver hands on Workshop (3D) - Invited Faculty . -April 14-16-2010 : Boras (Sweden ) :Course Director : 2nd international Cadaver hands on skull base workshop . -May 2010 : West Palm Beach (USA):Co-Director international advanced cadaver hands on skull base course. -June 2010 : Prague (Czech R.): 3th International Neurovascular and Skull Base workshop : Invited Faculty . -September 2010 :Roma ( Italy ) San Filippo Neri hospital : skull base and cerebrovascular workshop Invited faculty . -October 2010: San Francisco (USA) Congress of neurological surgeons – annual meeting . -November 2010 : West Palm Beach (USA) :Co-Director advanced cadaver hands-on skull base workshop -December 2010 : Roma (Italy) San Filippo Neri hospital : Surgeries on Microvascular decompression . -March 2011 :West Palm Beach( USA): Weill Cornell University New York – skull base cadaver hands on Workshop (3D) - Invited Faculty . -April 11-15- 2011 :Beitostölen (Norway)– Scandinavian course for young neurosurgeons-Invited speaker -May 2011 : West Palm Beach( USA) : Co-Director of advanced cadaver hands-on skullbase workshop. -June 2011: Kiev –( Ukraine): skull base workshop – Invited Faculty -September 7-10-2011: Ghent (B): 4th International Skull Base and Cerebrovacular workshop Organizing President of the Workshop -October 2011: Phoenix (USA) visit BNI ( Barrow Neurological Institute) -November 2011:West Palm Beach (USA) :Co-Director of advanced cadaver hands-on skull base workshop -November 2011:Boras –(Sweden) : Basic cadaver hands on course – Co- Director . -February 2012 : Boras (Sweden ) :Course Director : 3th International Cadaver hands on skull base workshop . -May 2012: West Palm Beach (USA) :Co-Director of advanced cadaver hands-on skull base workshop. -September 2012:Kiev (Ukraine) 5th International Neurovascular and Skull Base workshop-Invited Faculty -September 23-26-2012: Guangzhou (China R.) annual meting on spine surgery – Invited Faculty -October 2012: Chicago (USA) : Congress of neurological surgeons – annual meeting . -November 2012:West Palm Beach (USA): Co-director of advanced cadaver hands-on skull base workshop -November 2012: Boras (Sweden) : : Basic cadaver hands on course – Co- Director . -December 2012:Roma (Italy): New technologies and approaches in Skull Base surgery :Interdisciplinary challenge …Workshop and dissection course - Invited Faculty – Co-Director . -February 2013 : Boras (Sweden ) :Course Director : 4th International Cadaver hands on skull base workshop . -May 23-25= 2013 : Evanston (USA) : Univ. of Chicago NorthShore : Co-Director of advanced cadaver hands on workshop .