Course Registration

Secure Your Place in the Mastercourse

Join us for this transformative journey into Advanced Phonosurgery. Fill out the form below with your details to register for the course. Further enrollment details, including fees, will be provided as you proceed.

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Young ELS members: Young European Laryngological Society (Young ELS) members receive a 10% discount on course registration. Please mention your Young ELS membership when you register.

Global Timeline

Harmonized Across Time Zones

All sessions begin simultaneously worldwide. The table below shows the synchronized start time for key cities, based on a common global schedule.

City Time Zone Local Time
Istanbul TRT (UTC+3) 17:00
London BST (UTC+1) 15:00
New York EDT (UTC-4) 10:00
Mexico City CST (UTC-5) 09:00
Dubai GST (UTC+4) 18:00
New Delhi IST (UTC+5:30) 19:30
Singapore SGT (UTC+8) 22:00
Tokyo JST (UTC+9) 23:00

Weekly Schedule

Same Time Every Week

Week Date Start Time Details
Week 1 23 May 2026 Synchronized globally (see city times above)

Week 1 - 23 May 2026

Theory · Asia-Friendly · 17:00-19:00 TRT (UTC+3)

Session Content (Foundations · Voice Aesthetics · Regeneration Principles)

  • Phonosurgery decision-making tree: from complaint to indication.
  • Systematic analysis of sulcus, scarring, mucosal stiffness and glottic gap.
  • Stroboscopic and acoustic correlation: how to read vibratory patterns for surgery.
  • Voice Aesthetics & Acoustic Identity (25 min core module): timbre architecture, formants as design elements, feminine vs. masculine acoustic signatures, and emotional resonance patterns.
  • Introduction to regeneration: biology of mucosal healing, concepts of pliability, PRP and microsomes as tools for restoring vibratory tissue.
  • Overview of gas-assisted layer separation and its place among microlaryngeal techniques.

What Participants Will Obtain

  • A clear, structured framework for deciding when and how to operate.
  • Aesthetic and acoustic criteria to guide surgical choice, not just anatomical indication.
  • Conceptual understanding of how regenerative techniques can modify long-term voice outcomes.
  • A shared vocabulary for discussing pitch, timbre, formants and somatoacoustic behavior with patients and colleagues.
THEORY
Duration Session Content Speaker(s)
10 minOPENING SPEECH - Being a PhonosurgeonALP DEMIRELLER
15 minPhonosurgery decision-making tree: from complaint to indication.İsmail KOÇAK
15 minSystematic analysis of sulcus, scarring, mucosal stiffness and glottic gap.Volkan SÜNTER
15 minHigh speed imaging, stroboscopic and acoustic correlation: how to read vibratory patterns for surgery.İsmail KOÇAK
25 minVoice Aesthetics & Acoustic Identity (25 min core module): timbre architecture, formants as design elements, feminine vs. masculine acoustic signatures, and emotional resonance patterns.İsmail KOÇAK, Seher ŞİRİN
10 minThe future of healing: microsomes and stem cell regeneration.Özlem ATMIŞ
15 minPRP and regeneration tools for restoring vibratory tissue.Necati ENVER
15 minOverview of gas-assisted layer separation and its place among microlaryngeal techniques.Zeynep ALKAN, İsmail KOÇAK
10 minQ and ASTAFF
Week 2 6 June 2026 Synchronized globally

Week 2 - 6 June 2026

Live Surgery · West-Friendly · 17:00-20:00 TRT (UTC+3)

Session Content (Regenerative Surgery · Laser & Suture Integration)

  • Full live demonstration of gas glottosurgery for layer-specific separation.
  • Stepwise sulcus release: identifying tethered zones and safe dissection planes.
  • Preparation and handling of PRP and microsomes; timing and depth of injection.
  • Integration of laser for mucosal contouring while preserving pliability.
  • Microsuturing strategies in a previously damaged or fibrotic fold.
  • Intraoperative assessment of vibratory potential and immediate adjustment of the plan.

What Participants Will Obtain

  • Real-world view of a regenerative phonosurgery case from laryngoscopy to closure.
  • Practical tips on gas use, PRP handling and injection, and fine suturing in compromised tissue.
  • Strategies to minimize scarring and stiffness after intervention.
  • A reproducible mental checklist for planning and executing regenerative sulcus surgery.
MICROLARYNGEAL PHONOSURGERY · LIVE SURGERY
Duration Session Content Surgeon(s) Moderator OR Moderator Zoom
Todays Program by the president of Turkish ORL HNS SocietySUAT TURGUT
MICROLARYNGEAL PHONOSURGERY LIVE ONLINEİsmail KOÇAKÖzlem ATMIŞÖzlem ÖNERCİ
PRESENTATION OF THE PATIENT (S) - Stroboscopy - Acoustic analysis - Evaluation
STREAMING VIDEOS AND CASE PRESENTATIONS FROM EXPERIENCED SURGEONS (PRE RECORDED)
10 minFull live demonstration of gas glottosurgery for layer-specific separation.İsmail KOÇAK, Zeynep ALKAN
10 minStepwise sulcus release: identifying tethered zones and safe dissection planes - Fascia Implantation-suturingİlter DENİZOĞLU
5 minOther materials for improving and preserving the vocal fold pliabilityOkan ÖVÜNÇ
10 minExternal Approach to Sulcus VocalisEmel ÇADALLI TATAR
15 minPreparation and handling of PRP and microsomes; timing and depth of injection.Necati ENVER
15 minIntegration of lasers for mucosal contouring while preserving pliability.Kürşat GÖKCAN
15 minKey steps in micro laryngeal suturingİsmail KOÇAK
15 minFrom office to OR - Preneoplastic conditions and laryngeal papillomatosisHaldun OĞUZ
10 minAnesthesiaOlcay DUYAR İŞBİR
10 minRecovery RoomSTAFF
8 minTALK OF THE DAY
PRP and nanofat.PEAK WOO
Week 3 13 June 2026 Synchronized globally

Week 3 - 13 June 2026

Theory · Asia-Friendly · 17:00-19:00 TRT (UTC+3)

Session Content (Feminization Theory)

  • Acoustic and psychoacoustic markers of feminine voice: pitch, formants, resonance focus and timbre.
  • Laser Reduction Glottoplasty (LRG): indications, anatomy, web geometry and safety limits.
  • Wendler glottoplasty: microflap design, suture strategy and airway considerations.
  • Type IV cricothyroid approximation: framework mechanics and tension behavior.
  • Hybrid approaches: when and how to combine LRG, Wendler and Type IV to achieve stable feminization.
  • Managing expectations: realistic pitch goals, timbre changes and long-term follow-up.

What Participants Will Obtain

  • A comparative understanding of all major feminization procedures in one coherent algorithm.
  • Criteria for choosing the right technique (or combination) for each anatomy and patient profile.
  • Knowledge of typical complications and how to prevent over-tension, web instability or airway issues.
  • A structured way to counsel patients regarding acoustic and aesthetic outcomes.
THEORY
Duration Session Content Speaker(s)
3 minTodays Program by the president of IFOS IstanbulÖzgür YİĞİT
15 minAcoustic and psychoacoustic markers of feminine voice: pitch, formants, resonance focus and timbre.Seher ŞİRİN
15 minLaser Reduction Glottoplasty (LRG): indications, anatomy, surgical details and safety limits.İsmail KOÇAK
15 minWendler glottoplasty: web design, suture strategy and airway considerations.Elad AZİZLİ
15 minType IV cricothyroid approximation: framework mechanics and tension behavior.Elad AZİZLİ
15 minStaged techniques for optimal feminization.İsmail KOÇAK
15 minManaging expectations: realistic pitch goals, timbre changes and long-term follow-up.Seher ŞİRİN
10 minQ and ASTAFF
Week 4 20 June 2026 Synchronized globally

Week 4 - 20 June 2026

Live Surgery · West-Friendly · 17:00-20:00 TRT (UTC+3)

Session Content (Feminization Surgery - Hybrid LRG + Wendler)

  • Live hybrid case: combining LRG and Wendler techniques in a single procedure.
  • Exposure and visualization: optimal laryngoscope positioning and instrumentation.
  • Laser steps for controlled reduction and precise shaping of the anterior commissure region.
  • Microflap handling and glottic web creation with balanced tension.
  • Intraoperative strategies to avoid posterior over-compensation and unwanted roughness.
  • Immediate post-operative considerations: airway, edema, rest and early rehabilitation plan.

What Participants Will Obtain

  • Direct observation of a complete feminization workflow based on the Week 3 algorithm.
  • Practical insight into balancing pitch elevation, timbre softening and airway safety.
  • Fine technical details that are rarely shown in edited presentations.
  • A real operative sequence they can adapt to their own practice.
FEMINIZATION SURGERY · LIVE SURGERY
Duration Session Content Surgeon(s) Moderator OR Moderator Zoom
Laser Reduction Glottoplasty LIVEİsmail KOÇAK, Elad AZİZLİ, Volkan SÜNTERÖzlem ATMIŞSeher ŞİRİN
PRESENTATION OF THE PATIENT (S) - Stroboscopy - Acoustic analysis - Evaluation
STREAMING VIDEOS AND CASE PRESENTATIONS FROM EXPERIENCED SURGEONS (PRE RECORDED)
10 minFeminization glottoplasty types and outcomes.Hyuang-Tae KIM
15 minHybrid approaches: when and how to combine LRG, Wendler and Type IV to achieve stable feminization.Ahmed GENEID
10 minAlternative and emerging techniques of feminization glottoplasty.Hakan BİRKENT
10 minRecovery RoomSTAFF
8 minTALK OF THE DAY
The Architect of Modern Phonosurgery: Nobuhiko IsshikiMustafa GEREK
Week 5 27 June 2026 Synchronized globally

Week 5 - 27 June 2026

Theory · Asia-Friendly · 17:00-19:00 TRT (UTC+3)

Session Content (Masculinization Theory - Window AC Relaxation)

  • Characteristics of the masculine voice: depth, density, harmonic clustering and resonance volume.
  • Biomechanics of pitch lowering vs. simply "thickening" the voice.
  • Window Anterior Commissure (AC) Relaxation: concept, indication and limits.
  • Anatomical targets and step planning: which fibers to relax, where and how much.
  • Formant-deepening strategies and their relationship to laryngeal and supralaryngeal structures.
  • Masculinization after prior feminization: balancing identity, function and safety.

What Participants Will Obtain

  • A clear understanding of what makes a voice sound convincingly masculine beyond just low pitch.
  • A detailed mental model of the Window AC Relaxation procedure before seeing it live.
  • Criteria and red flags for patient selection in masculinization surgery.
  • Strategies for restoring or enhancing depth in challenging revision scenarios.
THEORY
Duration Session Content Speaker(s)
3 minTodays ProgramNecati ENVER
15 minCharacteristics of the masculine voice: depth, density, harmonic clustering and resonance volumeİsmail KOÇAK
15 minBiomechanics of pitch lowering vs. simply deepening the voiceNecati ENVER
15 minHormone therapies for masculinizationVolkan SÜNTER, Banu ERKAL
20 minWindow Anterior Commissure (AC) Relaxation: concept, indication and limits.Zeynep ALKAN
15 minLaser Relaxation Glottoplasty - EndoRelax Techniqueİsmail KOÇAK
10 minStaged techniques for optimal masculinization.İsmail KOÇAK
15 minManaging expectations: realistic pitch goals, timbre changes and long-term follow-up.Seher ŞİRİN
10 minQ and ASTAFF
Week 6 4 July 2026 Synchronized globally

Week 6 - 4 July 2026

Live Surgery · West-Friendly · 17:00-20:00 TRT (UTC+3)

Session Content (Masculinization Surgery - Window AC Relaxation)

  • Live demonstration of Window AC Relaxation from incision to closure.
  • Practical approach to exposing the anterior commissure and working safely in this zone.
  • Stepwise relaxation of the anterior TA-ligament complex without destabilizing closure.
  • Intraoperative testing of pitch and closure where feasible; anticipating post-op voice behavior.
  • Managing symmetry, tension distribution and prevention of anterior web problems.
  • Discussion of post-operative rehabilitation, resonance training and deep voice integration.

What Participants Will Obtain

  • A complete visual and conceptual map of how masculinization surgery is actually performed.
  • Nuanced understanding of how small adjustments at the AC translate into large acoustic differences.
  • Practical pearls on avoiding over-relaxation and long-term breathiness.
  • A ready-to-apply framework for incorporating deepening techniques into their own practice.
MASCULINIZATION SURGERY · LIVE SURGERY
Duration Session Content Surgeon(s) Moderator OR Moderator Zoom
Diamond Laryngoplasty (WACRL) LIVEİsmail KOÇAK, Zeynep ALKAN, Volkan SÜNTERÖzlem ATMIŞSeher ŞİRİN
PRESENTATION OF THE PATIENT (S) - Stroboscopy - Acoustic analysis - Evaluation
STREAMING VIDEOS AND CASE PRESENTATIONS FROM EXPERIENCED SURGEONS (PRE RECORDED)
10 minIshhiki techniques of Relaxation thyroplastyNecati ENVER
10 minAlternative and emerging techniques of masculinization and voice deepening.Elad AZİZLİ
10 minRecovery RoomSTAFF
15 minGlottic web: From design to complication.Taner YILMAZ
Week 7 11 July 2026 Synchronized globally

Week 7 - 11 July 2026

Theory · Asia-Friendly · 17:00-19:00 TRT (UTC+3)

Session Content (Somatoacoustic Module - The Human Body as an Acoustic Instrument)

  • Overview of somatoacoustics: how fascia, bone and cartilage shape resonance.
  • Deep Front Line, hyoid-larynx relationship and their influence on voice projection and depth.
  • Mechanosensitive pathways and microvibration physiology at a clinically useful level.
  • How emotional states and chronic tension patterns are reflected in acoustic output.
  • Somatoacoustic mapping: body segments, resonance zones and their perceptual signatures.
  • Clinical application: guiding patients after surgery to integrate their "new" voice into the body.

What Participants Will Obtain

  • A unique somatoacoustic framework to understand why the same surgery produces different voices in different bodies.
  • Conceptual tools to integrate posture, fascia, breath and resonance into surgical planning and follow-up.
  • New language and imagery to explain complex voice changes to patients in a meaningful way.
  • A scientific-artistic perspective that distinguishes their practice from standard phonosurgery.
THEORY
Duration Session Content Speaker(s)
20 minPostoperative care and treatment planning after phonosurgeryMüge Özçelik KORKMAZ
150 min Overview of somatoacoustics: how fascia, bone and cartilage shape resonance İsmail KOÇAK
Banu ERKAL
Özlem ÖNERCİ
Fascial lines effecting the voice
Deep Front Line, hyoid-larynx relationship and their influence on voice projection and depth.
How emotional states and chronic tension patterns are reflected in acoustic output.
Somatoacoustic mapping: body segments, resonance zones and their perceptual signature.
Clinical application: guiding patients after surgery to integrate their new voice into the body.
CLOSING CEREMONY

Course Information

Advanced Phonosurgery Mastercourse

A 7-week online mastercourse for ENT surgeons, phonosurgeons and voice specialists, combining advanced microlaryngeal surgery, regeneration, feminization and masculinization techniques with voice aesthetics and somatoacoustic science.

Chief Instructor: Prof. Dr. İsmail Koçak
Format: Global Online Programme · May–July 2026

The course will be conducted entirely in English. The introductory video is in Turkish with English subtitles.

Prof. Dr. İsmail Koçak

Invitation Message

"The human voice… is not only a sound. It's emotion, identity, and the essence of who we are."

I am Prof. Dr. İsmail Koçak as a member of Istanbul Laryngology Study Group (ILSG)— invite you to an exclusive online journey into Advanced Phonosurgery.

We will explore refined microlaryngeal techniques — from precision laser surgery to vocal fold suturing and gas glottoplasty.

We'll discuss voice feminization, deepening and masculinization, and how to manage the most challenging voices.

Each week combines theoretical sessions and live surgeries — every Saturday, May through July. With a balanced East and West time-zones, surgeons worldwide can join and share the art and science of the human voice.

Join me for the Online Course of Advanced Phonosurgery — and let's redefine the future of voice.

ILSG Members

ILSG is the joint group of Istanbul based phonosurgeons collaborating for research, consultation and referrals.

Prof. Dr. Zeynep Alkan

Prof. Dr. Zeynep Alkan

Prof. Dr. Seher Şirin

Prof. Dr. Seher Şirin

Doç. Dr. Volkan Sünter

Assoc. Prof. Dr. Volkan Sünter

Assoc. Prof. Dr. Necati Enver

Assoc. Prof. Dr. Necati Enver

Assoc. Prof. Dr. Özlem Önerci

Assoc. Prof. Dr. Özlem Önerci

Dr. Elad Azizli

Dr. Elad Azizli

Dr. Özlem Atmış

Dr. Özlem Atmış

Dr. Okan Övünç

Dr. Okan Övünç

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